Refactor "approvals" into directory

**Why?**
This directory will host the Vue components for multi rule approvals.

https://gitlab.com/gitlab-org/gitlab-ee/issues/1979

app/assets/stylesheets/framework/buttons.scss

@@ -166,7 +166,8 @@
       @include btn-outline($white-light, $green-600, $green-500, $green-500, $white-light, $green-600, $green-600, $green-700);
     }
 
-    &.btn-remove {
+    &.btn-remove,
+    &.btn-danger {
       @include btn-outline($white-light, $red-500, $red-500, $red-500, $white-light, $red-600, $red-600, $red-700);
     }
 

ee/app/assets/javascripts/approvals/components/app.vue

+<script>
+import { mapState, mapActions, mapGetters } from 'vuex';
+import { GlLoadingIcon, GlButton } from '@gitlab/ui';
+import ModalRuleCreate from './modal_rule_create.vue';
+import ModalRuleRemove from './modal_rule_remove.vue';
+import FallbackRules from './fallback_rules.vue';
+
+export default {
+  components: {
+    ModalRuleCreate,
+    ModalRuleRemove,
+    GlButton,
+    GlLoadingIcon,
+    FallbackRules,
+  },
+  computed: {
+    ...mapState({
+      settings: 'settings',
+      isLoading: state => state.approvals.isLoading,
+      hasLoaded: state => state.approvals.hasLoaded,
+    }),
+    ...mapGetters(['isEmpty']),
+    createModalId() {
+      return `${this.settings.prefix}-approvals-create-modal`;
+    },
+    removeModalId() {
+      return `${this.settings.prefix}-approvals-remove-modal`;
+    },
+  },
+  created() {
+    this.fetchRules();
+  },
+  methods: {
+    ...mapActions(['fetchRules']),
+    ...mapActions({ openCreateModal: 'createModal/open' }),
+  },
+};
+</script>
+
+<template>
+  <div>
+    <gl-loading-icon v-if="!hasLoaded" :size="2" />
+    <template v-else>
+      <div class="border-bottom">
+        <slot v-if="isEmpty" name="fallback"> <fallback-rules /> </slot>
+        <slot v-else name="rules"></slot>
+      </div>
+      <div v-if="settings.canEdit" class="border-bottom py-3 px-2">
+        <gl-loading-icon v-if="isLoading" />
+        <div v-if="settings.allowMultiRule" class="d-flex">
+          <gl-button class="ml-auto btn-info btn-inverted" @click="openCreateModal(null)">{{
+            __('Add approvers')
+          }}</gl-button>
+        </div>
+      </div>
+      <slot name="footer"></slot>
+    </template>
+    <modal-rule-create :modal-id="createModalId" />
+    <modal-rule-remove :modal-id="removeModalId" />
+  </div>
+</template>

ee/app/assets/javascripts/approvals/components/approvers_list.vue

+<script>
+import ApproversListEmpty from './approvers_list_empty.vue';
+import ApproversListItem from './approvers_list_item.vue';
+
+export default {
+  components: {
+    ApproversListEmpty,
+    ApproversListItem,
+  },
+  props: {
+    value: {
+      type: Array,
+      required: true,
+    },
+  },
+  methods: {
+    removeApprover(idx) {
+      const newValue = [...this.value.slice(0, idx), ...this.value.slice(idx + 1)];
+      this.$emit('input', newValue);
+    },
+  },
+};
+</script>
+
+<template>
+  <approvers-list-empty v-if="!value.length" />
+  <ul v-else class="content-list">
+    <approvers-list-item
+      v-for="(approver, index) in value"
+      :key="approver.type + approver.id"
+      :approver="approver"
+      @remove="removeApprover(index)"
+    />
+  </ul>
+</template>

ee/app/assets/javascripts/approvals/components/approvers_list_empty.vue

+<template>
+  <div class="d-flex justify-content-center align-items-center h-100 p-3">
+    <p class="text-center">
+      {{ __('You have not added any approvers. Start by adding users or groups.') }}
+    </p>
+  </div>
+</template>

ee/app/assets/javascripts/approvals/components/approvers_list_item.vue

+<script>
+import { GlButton } from '@gitlab/ui';
+import Icon from '~/vue_shared/components/icon.vue';
+import Avatar from '~/vue_shared/components/project_avatar/default.vue';
+import { TYPE_USER, TYPE_GROUP } from '../constants';
+
+const types = [TYPE_USER, TYPE_GROUP];
+
+export default {
+  components: {
+    GlButton,
+    Icon,
+    Avatar,
+  },
+  props: {
+    approver: {
+      type: Object,
+      required: true,
+      validator: ({ type }) => type && types.indexOf(type) >= 0,
+    },
+  },
+  computed: {
+    isGroup() {
+      return this.approver.type === TYPE_GROUP;
+    },
+    displayName() {
+      return this.isGroup ? this.approver.full_path : this.approver.name;
+    },
+  },
+};
+</script>
+
+<template>
+  <transition name="fade">
+    <li class="settings-flex-row">
+      <div class="px-3 d-flex align-items-center">
+        <avatar :project="approver" :size="24" /><span>{{ displayName }}</span>
+        <gl-button variant="none" class="ml-auto" @click="$emit('remove', approver)">
+          <icon name="remove" :aria-label="__('Remove')" />
+        </gl-button>
+      </div>
+    </li>
+  </transition>
+</template>

ee/app/assets/javascripts/approvals/components/approvers_select.vue

+<script>
+import $ from 'jquery';
+import 'select2/select2';
+import _ from 'underscore';
+import { __ } from '~/locale';
+import Api from '~/api';
+import { TYPE_USER, TYPE_GROUP } from '../constants';
+import { renderAvatar } from '~/helpers/avatar_helper';
+
+function addType(type) {
+  return items => items.map(obj => Object.assign(obj, { type }));
+}
+
+function formatSelection(group) {
+  return _.escape(group.full_name || group.name);
+}
+
+function formatResultUser(result) {
+  const { name, username } = result;
+  const avatar = renderAvatar(result, { sizeClass: 's40' });
+
+  return `
+    <div class="user-result">
+      <div class="user-image">
+        ${avatar}
+      </div>
+      <div class="user-info">
+        <div class="user-name">${_.escape(name)}</div>
+        <div class="user-username">@${_.escape(username)}</div>
+      </div>
+    </div>
+  `;
+}
+
+function formatResultGroup(result) {
+  const { full_name: fullName, full_path: fullPath } = result;
+  const avatar = renderAvatar(result, { sizeClass: 's40' });
+
+  return `
+    <div class="user-result group-result">
+      <div class="group-image">
+        ${avatar}
+      </div>
+      <div class="group-info">
+        <div class="group-name">${_.escape(fullName)}</div>
+        <div class="group-path">${_.escape(fullPath)}</div>
+      </div>
+    </div>
+  `;
+}
+
+function formatResult(result) {
+  return result.type === TYPE_USER ? formatResultUser(result) : formatResultGroup(result);
+}
+
+export default {
+  props: {
+    value: {
+      type: Array,
+      required: false,
+      default: () => [],
+    },
+    projectId: {
+      type: String,
+      required: true,
+    },
+    skipUserIds: {
+      type: Array,
+      required: false,
+      default: () => [],
+    },
+    skipGroupIds: {
+      type: Array,
+      required: false,
+      default: () => [],
+    },
+    isInvalid: {
+      type: Boolean,
+      required: false,
+      default: false,
+    },
+  },
+  watch: {
+    value(val) {
+      if (val.length === 0) {
+        this.clear();
+      }
+    },
+    isInvalid(val) {
+      const $container = $(this.$refs.input).select2('container');
+
+      if (val) {
+        $container.addClass('is-invalid');
+      } else {
+        $container.removeClass('is-invalid');
+      }
+    },
+  },
+  mounted() {
+    $(this.$refs.input)
+      .select2({
+        placeholder: __('Search users or groups'),
+        minimumInputLength: 0,
+        multiple: true,
+        closeOnSelect: false,
+        formatResult,
+        formatSelection,
+        query: _.debounce(
+          ({ term, callback }) => this.fetchGroupsAndUsers(term).then(callback),
+          250,
+        ),
+        id: ({ type, id }) => `${type}${id}`,
+      })
+      .on('change', e => this.onChange(e));
+  },
+  beforeDestroy() {
+    $(this.$refs.input).select2('destroy');
+  },
+  methods: {
+    fetchGroupsAndUsers(term) {
+      const groupsAsync = this.fetchGroups(term).then(addType(TYPE_GROUP));
+      const usersAsync = this.fetchUsers(term).then(addType(TYPE_USER));
+
+      return Promise.all([groupsAsync, usersAsync])
+        .then(([groups, users]) => groups.concat(users))
+        .then(results => ({ results }));
+    },
+    fetchGroups(term) {
+      return Api.groups(term, {
+        skip_groups: this.skipGroupIds,
+      });
+    },
+    fetchUsers(term) {
+      return Api.approverUsers(term, {
+        skip_users: this.skipUserIds,
+        project_id: this.projectId,
+      });
+    },
+    onChange() {
+      // call data instead of val to get array of objects
+      const value = $(this.$refs.input).select2('data');
+
+      this.$emit('input', value);
+    },
+    clear() {
+      $(this.$refs.input).select2('data', []);
+    },
+  },
+};
+</script>
+
+<template>
+  <input ref="input" name="members" type="hidden" />
+</template>

ee/app/assets/javascripts/approvals/components/fallback_rules.vue

+<script>
+import { mapState } from 'vuex';
+import Icon from '~/vue_shared/components/icon.vue';
+import UserAvatarList from '~/vue_shared/components/user_avatar/user_avatar_list.vue';
+import Rules from './rules.vue';
+import RuleControls from './rule_controls.vue';
+
+export default {
+  components: {
+    Icon,
+    UserAvatarList,
+    Rules,
+    RuleControls,
+  },
+  props: {
+    hasControls: {
+      type: Boolean,
+      required: false,
+      default: true,
+    },
+  },
+  computed: {
+    ...mapState({
+      approvalsRequired: state => state.approvals.fallbackApprovalsRequired,
+      minApprovalsRequired: state => state.approvals.minFallbackApprovalsRequired || 0,
+    }),
+    rules() {
+      return [
+        {
+          isFallback: true,
+          approvalsRequired: this.approvalsRequired,
+          minApprovalsRequired: this.minApprovalsRequired,
+        },
+      ];
+    },
+  },
+};
+</script>
+
+<template>
+  <rules :rules="rules">
+    <template slot="thead" slot-scope="{ members, approvalsRequired }">
+      <tr class="d-none d-sm-table-row">
+        <th class="w-75 pl-0">{{ members }}</th>
+        <th>{{ approvalsRequired }}</th>
+        <th v-if="hasControls"></th>
+      </tr>
+    </template>
+    <template slot="tr" slot-scope="{ rule }">
+      <td class="pl-0">
+        {{ s__('ApprovalRule|All members with Developer role or higher and code owners (if any)') }}
+      </td>
+      <td class="text-nowrap">
+        <slot
+          name="approvals-required"
+          :approvals-required="rule.approvalsRequired"
+          :min-approvals-required="rule.minApprovalsRequired"
+        >
+          <icon name="approval" class="align-top text-tertiary" />
+          <span>{{ rule.approvalsRequired }}</span>
+        </slot>
+      </td>
+      <td v-if="hasControls" class="text-nowrap px-2 w-0">
+        <rule-controls :rule="rule" />
+      </td>
+    </template>
+  </rules>
+</template>

ee/app/assets/javascripts/approvals/components/modal_rule_create.vue

+<script>
+import { mapState } from 'vuex';
+import { __ } from '~/locale';
+import GlModalVuex from '~/vue_shared/components/gl_modal_vuex.vue';
+import RuleForm from './rule_form.vue';
+
+export default {
+  components: {
+    GlModalVuex,
+    RuleForm,
+  },
+  props: {
+    modalId: {
+      type: String,
+      required: true,
+    },
+  },
+  computed: {
+    ...mapState('createModal', {
+      rule: 'data',
+    }),
+    title() {
+      return this.rule ? __('Update approvers') : __('Add approvers');
+    },
+  },
+  methods: {
+    submit() {
+      this.$refs.form.submit();
+    },
+  },
+};
+</script>
+
+<template>
+  <gl-modal-vuex
+    modal-module="createModal"
+    :modal-id="modalId"
+    :title="title"
+    :ok-title="title"
+    ok-variant="success"
+    :cancel-title="__('Cancel')"
+    @ok.prevent="submit"
+  >
+    <rule-form ref="form" :init-rule="rule" />
+  </gl-modal-vuex>
+</template>

ee/app/assets/javascripts/approvals/components/modal_rule_remove.vue

+<script>
+import { mapActions, mapState } from 'vuex';
+import { sprintf, n__, s__ } from '~/locale';
+import _ from 'underscore';
+import GlModalVuex from '~/vue_shared/components/gl_modal_vuex.vue';
+
+export default {
+  components: {
+    GlModalVuex,
+  },
+  props: {
+    modalId: {
+      type: String,
+      required: true,
+    },
+  },
+  computed: {
+    ...mapState('deleteModal', {
+      rule: 'data',
+    }),
+    message() {
+      if (!this.rule) {
+        return '';
+      }
+
+      const nMembers = n__(
+        'ApprovalRuleRemove|%d member',
+        'ApprovalRuleRemove|%d members',
+        this.rule.approvers.length,
+      );
+      const removeWarning = sprintf(
+        s__(
+          'ApprovalRuleRemove|You are about to remove the %{name} approver group which has %{nMembers}.',
+        ),
+        {
+          name: `<strong>${_.escape(this.rule.name)}</strong>`,
+          nMembers: `<strong>${nMembers}</strong>`,
+        },
+        false,
+      );
+      const revokeWarning = n__(
+        'ApprovalRuleRemove|Approvals from this member are not revoked.',
+        'ApprovalRuleRemove|Approvals from these members are not revoked.',
+        this.rule.approvers.length,
+      );
+
+      return `${removeWarning} ${revokeWarning}`;
+    },
+  },
+  methods: {
+    ...mapActions(['deleteRule']),
+    submit() {
+      this.deleteRule(this.rule.id);
+    },
+  },
+};
+</script>
+
+<template>
+  <gl-modal-vuex
+    modal-module="deleteModal"
+    :modal-id="modalId"
+    :title="__('Remove approvers?')"
+    :ok-title="__('Remove approvers')"
+    ok-variant="remove"
+    :cancel-title="__('Cancel')"
+    @ok.prevent="submit"
+  >
+    <p v-html="message"></p>
+  </gl-modal-vuex>
+</template>

ee/app/assets/javascripts/approvals/components/mr_edit/app.vue

+<script>
+import App from '../app.vue';
+import MrRules from './mr_rules.vue';
+import MrRulesHiddenInputs from './mr_rules_hidden_inputs.vue';
+import MrFallbackRules from './mr_fallback_rules.vue';
+
+export default {
+  components: {
+    App,
+    MrRules,
+    MrRulesHiddenInputs,
+    MrFallbackRules,
+  },
+};
+</script>
+
+<template>
+  <app>
+    <mr-fallback-rules slot="fallback" />
+    <mr-rules slot="rules" />
+    <mr-rules-hidden-inputs slot="footer" />
+  </app>
+</template>

ee/app/assets/javascripts/approvals/components/mr_edit/mr_fallback_rules.vue

+<script>
+import { mapState, mapActions } from 'vuex';
+import FallbackRules from '../fallback_rules.vue';
+
+export default {
+  components: {
+    FallbackRules,
+  },
+  computed: {
+    ...mapState(['settings']),
+  },
+  methods: {
+    ...mapActions(['putFallbackRule']),
+  },
+};
+</script>
+
+<template>
+  <fallback-rules :has-controls="settings.canEdit">
+    <input
+      slot="approvals-required"
+      slot-scope="{ approvalsRequired, minApprovalsRequired }"
+      :value="approvalsRequired"
+      :disabled="!settings.canEdit"
+      class="form-control mw-6em"
+      type="number"
+      :min="minApprovalsRequired"
+      @input="putFallbackRule({ approvalsRequired: Number($event.target.value) })"
+    />
+  </fallback-rules>
+</template>

ee/app/assets/javascripts/approvals/components/mr_edit/mr_rules.vue

+<script>
+import { mapState, mapActions } from 'vuex';
+import UserAvatarList from '~/vue_shared/components/user_avatar/user_avatar_list.vue';
+import Rules from '../rules.vue';
+import RuleControls from '../rule_controls.vue';
+
+export default {
+  components: {
+    UserAvatarList,
+    Rules,
+    RuleControls,
+  },
+  computed: {
+    ...mapState(['settings']),
+    ...mapState({
+      rules: state => state.approvals.rules,
+    }),
+  },
+  methods: {
+    ...mapActions(['putRule']),
+    canEdit(rule) {
+      const { canEdit, allowMultiRule } = this.settings;
+
+      return canEdit && (!allowMultiRule || !rule.hasSource);
+    },
+  },
+};
+</script>
+
+<template>
+  <rules :rules="rules">
+    <template slot="thead" slot-scope="{ name, members, approvalsRequired }">
+      <tr>
+        <th v-if="settings.allowMultiRule">{{ name }}</th>
+        <th :class="settings.allowMultiRule ? 'w-50 d-none d-sm-table-cell' : 'w-75'">
+          {{ members }}
+        </th>
+        <th>{{ approvalsRequired }}</th>
+        <th></th>
+      </tr>
+    </template>
+    <template slot="tr" slot-scope="{ rule }">
+      <td v-if="settings.allowMultiRule" class="js-name">{{ rule.name }}</td>
+      <td class="js-members" :class="settings.allowMultiRule ? 'd-none d-sm-table-cell' : ''">
+        <user-avatar-list :items="rule.approvers" :img-size="24" />
+      </td>
+      <td class="js-approvals-required">
+        <input
+          :value="rule.approvalsRequired"
+          :disabled="!settings.canEdit"
+          class="form-control mw-6em"
+          type="number"
+          :min="rule.minApprovalsRequired"
+          @input="putRule({ id: rule.id, approvalsRequired: Number($event.target.value) })"
+        />
+      </td>
+      <td class="text-nowrap px-2 w-0 js-controls">
+        <rule-controls v-if="canEdit(rule)" :rule="rule" />
+      </td>
+    </template>
+  </rules>
+</template>

ee/app/assets/javascripts/approvals/components/mr_edit/mr_rules_hidden_inputs.vue

+<script>
+import { mapState } from 'vuex';
+
+const INPUT_ID = 'merge_request[approval_rules_attributes][][id]';
+const INPUT_SOURCE_ID = 'merge_request[approval_rules_attributes][][approval_project_rule_id]';
+const INPUT_NAME = 'merge_request[approval_rules_attributes][][name]';
+const INPUT_APPROVALS_REQUIRED = 'merge_request[approval_rules_attributes][][approvals_required]';
+const INPUT_USER_IDS = 'merge_request[approval_rules_attributes][][user_ids][]';
+const INPUT_GROUP_IDS = 'merge_request[approval_rules_attributes][][group_ids][]';
+const INPUT_DELETE = 'merge_request[approval_rules_attributes][][_destroy]';
+const INPUT_FALLBACK_APPROVALS_REQUIRED = 'merge_request[approvals_before_merge]';
+
+export default {
+  computed: {
+    ...mapState(['settings']),
+    ...mapState({
+      rules: state => state.approvals.rules,
+      rulesToDelete: state => state.approvals.rulesToDelete,
+      fallbackApprovalsRequired: state => state.approvals.fallbackApprovalsRequired,
+    }),
+  },
+  INPUT_ID,
+  INPUT_SOURCE_ID,
+  INPUT_NAME,
+  INPUT_APPROVALS_REQUIRED,
+  INPUT_USER_IDS,
+  INPUT_GROUP_IDS,
+  INPUT_DELETE,
+  INPUT_FALLBACK_APPROVALS_REQUIRED,
+};
+</script>
+
+<template>
+  <div v-if="settings.canEdit">
+    <div v-for="id in rulesToDelete" :key="id">
+      <input :value="id" :name="$options.INPUT_ID" type="hidden" />
+      <input :value="1" :name="$options.INPUT_DELETE" type="hidden" />
+    </div>
+    <input
+      v-if="!rules.length"
+      :value="fallbackApprovalsRequired"
+      :name="$options.INPUT_FALLBACK_APPROVALS_REQUIRED"
+      type="hidden"
+    />
+    <div v-for="rule in rules" :key="rule.id">
+      <input v-if="!rule.isNew" :value="rule.id" :name="$options.INPUT_ID" type="hidden" />
+      <input
+        v-if="rule.isNew && rule.hasSource"
+        :value="rule.sourceId"
+        :name="$options.INPUT_SOURCE_ID"
+        type="hidden"
+      />
+      <input
+        :value="rule.approvalsRequired"
+        :name="$options.INPUT_APPROVALS_REQUIRED"
+        type="hidden"
+      />
+      <input :value="rule.name" :name="$options.INPUT_NAME" type="hidden" />
+      <input
+        v-if="!rule.users || rule.users.length === 0"
+        value=""
+        :name="$options.INPUT_USER_IDS"
+        type="hidden"
+      />
+      <input
+        v-for="user in rule.users"
+        :key="user.id"
+        :value="user.id"
+        :name="$options.INPUT_USER_IDS"
+        type="hidden"
+      />
+      <input
+        v-if="!rule.groups || rule.groups.length === 0"
+        value=""
+        :name="$options.INPUT_GROUP_IDS"
+        type="hidden"
+      />
+      <input
+        v-for="group in rule.groups"
+        :key="group.id"
+        :value="group.id"
+        :name="$options.INPUT_GROUP_IDS"
+        type="hidden"
+      />
+    </div>
+  </div>
+</template>

ee/app/assets/javascripts/approvals/components/project_settings/app.vue

+<script>
+import App from '../app.vue';
+import ProjectRules from './project_rules.vue';
+
+export default {
+  components: {
+    App,
+    ProjectRules,
+  },
+};
+</script>
+
+<template>
+  <app><project-rules slot="rules"/></app>
+</template>

ee/app/assets/javascripts/approvals/components/project_settings/project_rules.vue

+<script>
+import { mapState } from 'vuex';
+import { n__, sprintf } from '~/locale';
+import Icon from '~/vue_shared/components/icon.vue';
+import UserAvatarList from '~/vue_shared/components/user_avatar/user_avatar_list.vue';
+import Rules from '../rules.vue';
+import RuleControls from '../rule_controls.vue';
+
+export default {
+  components: {
+    Icon,
+    UserAvatarList,
+    Rules,
+    RuleControls,
+  },
+  computed: {
+    ...mapState(['settings']),
+    ...mapState({
+      rules: state => state.approvals.rules,
+    }),
+  },
+  methods: {
+    summaryText(rule) {
+      return this.settings.allowMultiRule
+        ? this.summaryMultipleRulesText(rule)
+        : this.summarySingleRuleText(rule);
+    },
+    membersCountText(rule) {
+      return n__(
+        'ApprovalRuleSummary|%d member',
+        'ApprovalRuleSummary|%d members',
+        rule.approvers.length,
+      );
+    },
+    summarySingleRuleText(rule) {
+      const membersCount = this.membersCountText(rule);
+
+      return sprintf(
+        n__(
+          'ApprovalRuleSummary|%{count} approval required from %{membersCount}',
+          'ApprovalRuleSummary|%{count} approvals required from %{membersCount}',
+          rule.approvalsRequired,
+        ),
+        { membersCount, count: rule.approvalsRequired },
+      );
+    },
+    summaryMultipleRulesText(rule) {
+      return sprintf(
+        n__(
+          '%{count} approval required from %{name}',
+          '%{count} approvals required from %{name}',
+          rule.approvalsRequired,
+        ),
+        { name: rule.name, count: rule.approvalsRequired },
+      );
+    },
+  },
+};
+</script>
+
+<template>
+  <rules :rules="rules">
+    <template slot="thead" slot-scope="{ name, members, approvalsRequired }">
+      <tr class="d-none d-sm-table-row">
+        <th v-if="settings.allowMultiRule">{{ name }}</th>
+        <th class="w-50">{{ members }}</th>
+        <th>{{ approvalsRequired }}</th>
+        <th></th>
+      </tr>
+    </template>
+    <template slot="tr" slot-scope="{ rule }">
+      <td class="d-table-cell d-sm-none js-summary">{{ summaryText(rule) }}</td>
+      <td v-if="settings.allowMultiRule" class="d-none d-sm-table-cell js-name">
+        {{ rule.name }}
+      </td>
+      <td class="d-none d-sm-table-cell js-members">
+        <user-avatar-list :items="rule.approvers" :img-size="24" />
+      </td>
+      <td class="d-none d-sm-table-cell js-approvals-required">
+        <icon name="approval" class="align-top text-tertiary" />
+        <span>{{ rule.approvalsRequired }}</span>
+      </td>
+      <td class="text-nowrap px-2 w-0 js-controls"><rule-controls :rule="rule" /></td>
+    </template>
+  </rules>
+</template>

ee/app/assets/javascripts/approvals/components/rule_controls.vue

+<script>
+import { mapState, mapActions } from 'vuex';
+import { GlButton } from '@gitlab/ui';
+import Icon from '~/vue_shared/components/icon.vue';
+
+export default {
+  components: {
+    GlButton,
+    Icon,
+  },
+  props: {
+    rule: {
+      type: Object,
+      required: true,
+    },
+  },
+  computed: {
+    ...mapState(['settings']),
+    isRemoveable() {
+      return !this.rule.isFallback && this.settings.allowMultiRule;
+    },
+  },
+  methods: {
+    ...mapActions(['requestEditRule', 'requestDeleteRule']),
+  },
+};
+</script>
+
+<template>
+  <div>
+    <gl-button variant="none" @click="requestEditRule(rule)">
+      <span>{{ __('Edit') }}</span> </gl-button
+    ><gl-button
+      v-if="isRemoveable"
+      class="prepend-left-8 btn btn-inverted"
+      variant="danger"
+      @click="requestDeleteRule(rule)"
+    >
+      <icon name="remove" :aria-label="__('Remove')" />
+    </gl-button>
+  </div>
+</template>

ee/app/assets/javascripts/approvals/components/rule_form.vue

+<script>
+import { mapState, mapActions } from 'vuex';
+import _ from 'underscore';
+import { GlButton } from '@gitlab/ui';
+import { sprintf, __ } from '~/locale';
+import ApproversList from './approvers_list.vue';
+import ApproversSelect from './approvers_select.vue';
+import { TYPE_USER, TYPE_GROUP } from '../constants';
+
+const DEFAULT_NAME = 'Default';
+
+export default {
+  components: {
+    ApproversList,
+    ApproversSelect,
+    GlButton,
+  },
+  props: {
+    initRule: {
+      type: Object,
+      required: false,
+      default: null,
+    },
+  },
+  data() {
+    return {
+      name: '',
+      approvalsRequired: 1,
+      minApprovalsRequired: 0,
+      approvers: [],
+      approversToAdd: [],
+      showValidation: false,
+      isFallback: false,
+      ...this.getInitialData(),
+    };
+  },
+  computed: {
+    ...mapState(['settings']),
+    approversByType() {
+      return _.groupBy(this.approvers, x => x.type);
+    },
+    users() {
+      return this.approversByType[TYPE_USER] || [];
+    },
+    groups() {
+      return this.approversByType[TYPE_GROUP] || [];
+    },
+    userIds() {
+      return this.users.map(x => x.id);
+    },
+    groupIds() {
+      return this.groups.map(x => x.id);
+    },
+    validation() {
+      if (!this.showValidation) {
+        return {};
+      }
+
+      return {
+        name: this.invalidName,
+        approvalsRequired: this.invalidApprovalsRequired,
+        approvers: this.invalidApprovers,
+      };
+    },
+    invalidName() {
+      if (!this.isMultiSubmission) {
+        return '';
+      }
+
+      return !this.name ? __('Please provide a name') : '';
+    },
+    invalidApprovalsRequired() {
+      if (!_.isNumber(this.approvalsRequired)) {
+        return __('Please enter a valid number');
+      }
+
+      if (this.approvalsRequired < 0) {
+        return __('Please enter a non-negative number');
+      }
+
+      return this.approvalsRequired < this.minApprovalsRequired
+        ? sprintf(__('Please enter a number greater than %{number} (from the project settings)'), {
+            number: this.minApprovalsRequired,
+          })
+        : '';
+    },
+    invalidApprovers() {
+      if (!this.isMultiSubmission) {
+        return '';
+      }
+
+      return !this.approvers.length ? __('Please select and add a member') : '';
+    },
+    isValid() {
+      return Object.keys(this.validation).every(key => !this.validation[key]);
+    },
+    isMultiSubmission() {
+      return this.settings.allowMultiRule && !this.isFallbackSubmission;
+    },
+    isFallbackSubmission() {
+      return (
+        this.settings.allowMultiRule && this.isFallback && !this.name && !this.approvers.length
+      );
+    },
+    submissionData() {
+      return {
+        id: this.initRule && this.initRule.id,
+        name: this.name || DEFAULT_NAME,
+        approvalsRequired: this.approvalsRequired,
+        users: this.userIds,
+        groups: this.groupIds,
+        userRecords: this.users,
+        groupRecords: this.groups,
+      };
+    },
+  },
+  methods: {
+    ...mapActions(['putFallbackRule', 'postRule', 'putRule', 'deleteRule']),
+    addSelection() {
+      if (!this.approversToAdd.length) {
+        return;
+      }
+
+      this.approvers = this.approversToAdd.concat(this.approvers);
+      this.approversToAdd = [];
+    },
+    /**
+     * Validate and submit the form based on what type it is.
+     * - Fallback rule?
+     * - Single rule?
+     * - Multi rule?
+     */
+    submit() {
+      if (!this.validate()) {
+        return Promise.resolve();
+      } else if (this.isFallbackSubmission) {
+        return this.submitFallback();
+      } else if (!this.isMultiSubmission) {
+        return this.submitSingleRule();
+      }
+
+      return this.submitRule();
+    },
+    /**
+     * Submit the rule, by either put-ing or post-ing.
+     */
+    submitRule() {
+      const data = this.submissionData;
+
+      return data.id ? this.putRule(data) : this.postRule(data);
+    },
+    /**
+     * Submit as a fallback rule.
+     */
+    submitFallback() {
+      return this.putFallbackRule({ approvalsRequired: this.approvalsRequired });
+    },
+    /**
+     * Submit as a single rule. This is determined by the settings.
+     */
+    submitSingleRule() {
+      if (!this.approvers.length) {
+        return this.submitEmptySingleRule();
+      }
+
+      return this.submitRule();
+    },
+    /**
+     * Submit as a single rule without approvers, so submit the fallback.
+     * Also delete the rule if necessary.
+     */
+    submitEmptySingleRule() {
+      const id = this.initRule && this.initRule.id;
+
+      return Promise.all([this.submitFallback(), id ? this.deleteRule(id) : Promise.resolve()]);
+    },
+    validate() {
+      this.showValidation = true;
+
+      return this.isValid;
+    },
+    getInitialData() {
+      if (!this.initRule) {
+        return {};
+      }
+
+      if (this.initRule.isFallback) {
+        return {
+          approvalsRequired: this.initRule.approvalsRequired,
+          isFallback: this.initRule.isFallback,
+        };
+      }
+
+      const users = this.initRule.users.map(x => ({ ...x, type: TYPE_USER }));
+      const groups = this.initRule.groups.map(x => ({ ...x, type: TYPE_GROUP }));
+
+      return {
+        name: this.initRule.name || '',
+        approvalsRequired: this.initRule.approvalsRequired || 0,
+        minApprovalsRequired: this.initRule.minApprovalsRequired || 0,
+        approvers: groups.concat(users),
+      };
+    },
+  },
+};
+</script>
+
+<template>
+  <form novalidate @submit.prevent.stop="submit">
+    <div class="row">
+      <div v-if="settings.allowMultiRule" class="form-group col-sm-6">
+        <label class="label-wrapper">
+          <span class="form-label label-bold">{{ s__('ApprovalRule|Name') }}</span>
+          <input
+            v-model="name"
+            :class="{ 'is-invalid': validation.name }"
+            class="form-control"
+            name="name"
+            type="text"
+          />
+          <span class="invalid-feedback">{{ validation.name }}</span>
+          <span class="text-secondary">{{ s__('ApprovalRule|e.g. QA, Security, etc.') }}</span>
+        </label>
+      </div>
+      <div class="form-group col-sm-6">
+        <label class="label-wrapper">
+          <span class="form-label label-bold">{{
+            s__('ApprovalRule|No. approvals required')
+          }}</span>
+          <input
+            v-model.number="approvalsRequired"
+            :class="{ 'is-invalid': validation.approvalsRequired }"
+            class="form-control mw-6em"
+            name="approvals_required"
+            type="number"
+            :min="minApprovalsRequired"
+          />
+          <span class="invalid-feedback">{{ validation.approvalsRequired }}</span>
+        </label>
+      </div>
+    </div>
+    <div class="form-group">
+      <label class="label-bold">{{ s__('ApprovalRule|Members') }}</label>
+      <div class="d-flex align-items-start">
+        <div class="w-100">
+          <approvers-select
+            v-model="approversToAdd"
+            :project-id="settings.projectId"
+            :skip-user-ids="userIds"
+            :skip-group-ids="groupIds"
+            :is-invalid="!!validation.approvers"
+          />
+          <div class="invalid-feedback">{{ validation.approvers }}</div>
+        </div>
+        <gl-button variant="success" class="btn-inverted prepend-left-8" @click="addSelection">
+          {{ __('Add') }}
+        </gl-button>
+      </div>
+    </div>
+    <div class="bordered-box overflow-auto h-12em"><approvers-list v-model="approvers" /></div>
+  </form>
+</template>

ee/app/assets/javascripts/approvals/components/rules.vue

+<script>
+import { s__ } from '~/locale';
+
+const HEADERS = {
+  name: s__('ApprovalRule|Name'),
+  members: s__('ApprovalRule|Members'),
+  approvalsRequired: s__('ApprovalRule|No. approvals required'),
+};
+
+export default {
+  props: {
+    rules: {
+      type: Array,
+      required: true,
+    },
+  },
+  HEADERS,
+};
+</script>
+
+<template>
+  <table class="table m-0">
+    <thead class="thead-white text-nowrap">
+      <slot name="thead" v-bind="$options.HEADERS"></slot>
+    </thead>
+    <tbody>
+      <tr v-for="rule in rules" :key="rule.id">
+        <slot :rule="rule" name="tr"></slot>
+      </tr>
+    </tbody>
+  </table>
+</template>

ee/app/assets/javascripts/approvals/constants.js

+export const TYPE_USER = 'user';
+export const TYPE_GROUP = 'group';
+
+export const RULE_TYPE_FALLBACK = 'fallback';
+export const RULE_TYPE_REGULAR = 'regular';
+export const RULE_TYPE_CODE_OWNER = 'code_owner';

ee/app/assets/javascripts/approvals/mappers.js

+import _ from 'underscore';
+import { RULE_TYPE_REGULAR, RULE_TYPE_FALLBACK } from './constants';
+
+export const mapApprovalRuleRequest = req => ({
+  name: req.name,
+  approvals_required: req.approvalsRequired,
+  users: req.users,
+  groups: req.groups,
+});
+
+export const mapApprovalFallbackRuleRequest = req => ({
+  fallback_approvals_required: req.approvalsRequired,
+});
+
+export const mapApprovalRuleResponse = res => ({
+  id: res.id,
+  hasSource: !!res.source_rule,
+  name: res.name,
+  approvalsRequired: res.approvals_required,
+  minApprovalsRequired: res.source_rule ? res.source_rule.approvals_required : 0,
+  approvers: res.approvers,
+  users: res.users,
+  groups: res.groups,
+});
+
+export const mapApprovalSettingsResponse = res => ({
+  rules: res.rules.map(mapApprovalRuleResponse),
+  fallbackApprovalsRequired: res.fallback_approvals_required,
+});
+
+/**
+ * Map the sourced approval rule response for the MR view
+ *
+ * This rule is sourced from project settings, which implies:
+ * - Not a real MR rule, so no "id".
+ * - The approvals required are the minimum.
+ */
+export const mapMRSourceRule = ({ id, ...rule }) => ({
+  ...rule,
+  hasSource: true,
+  sourceId: id,
+  minApprovalsRequired: rule.approvalsRequired || 0,
+});
+
+/**
+ * Map the approval settings response for the MR view
+ *
+ * - Only show regular rules.
+ * - If needed, extract the fallback approvals required
+ *   from the fallback rule.
+ */
+export const mapMRApprovalSettingsResponse = res => {
+  const rulesByType = _.groupBy(res.rules, x => x.rule_type);
+
+  const regularRules = rulesByType[RULE_TYPE_REGULAR] || [];
+
+  const [fallback] = rulesByType[RULE_TYPE_FALLBACK] || [];
+  const fallbackApprovalsRequired = fallback
+    ? fallback.approvals_required
+    : res.fallback_approvals_required || 0;
+
+  return {
+    rules: regularRules
+      .map(mapApprovalRuleResponse)
+      .map(res.approval_rules_overwritten ? x => x : mapMRSourceRule),
+    fallbackApprovalsRequired,
+    minFallbackApprovalsRequired: 0,
+  };
+};

ee/app/assets/javascripts/approvals/mount_mr_edit.js

+import Vue from 'vue';
+import Vuex from 'vuex';
+import { parseBoolean } from '~/lib/utils/common_utils';
+import createStore from './stores';
+import mrEditModule from './stores/modules/mr_edit';
+import MrEditApp from './components/mr_edit/app.vue';
+
+Vue.use(Vuex);
+
+export default function mountApprovalInput(el) {
+  if (!el) {
+    return null;
+  }
+
+  const store = createStore(mrEditModule(), {
+    ...el.dataset,
+    prefix: 'mr-edit',
+    canEdit: parseBoolean(el.dataset.canEdit),
+    allowMultiRule: parseBoolean(el.dataset.allowMultiRule),
+  });
+
+  return new Vue({
+    el,
+    store,
+    render(h) {
+      return h(MrEditApp);
+    },
+  });
+}

ee/app/assets/javascripts/approvals/mount_project_settings.js

+import Vue from 'vue';
+import Vuex from 'vuex';
+import createStore from './stores';
+import projectSettingsModule from './stores/modules/project_settings';
+import ProjectSettingsApp from './components/project_settings/app.vue';
+import { parseBoolean } from '~/lib/utils/common_utils';
+
+Vue.use(Vuex);
+
+export default function mountProjectSettingsApprovals(el) {
+  if (!el) {
+    return null;
+  }
+
+  const store = createStore(projectSettingsModule(), {
+    ...el.dataset,
+    prefix: 'project-settings',
+    allowMultiRule: parseBoolean(el.dataset.allowMultiRule),
+  });
+
+  return new Vue({
+    el,
+    store,
+    render(h) {
+      return h(ProjectSettingsApp);
+    },
+  });
+}

ee/app/assets/javascripts/approvals/stores/index.js

+import Vuex from 'vuex';
+import modalModule from '~/vuex_shared/modules/modal';
+import state from './state';
+
+export const createStoreOptions = (approvalsModule, settings) => ({
+  state: state(settings),
+  modules: {
+    ...(approvalsModule ? { approvals: approvalsModule } : {}),
+    createModal: modalModule(),
+    deleteModal: modalModule(),
+  },
+});
+
+export default (approvalsModule, settings = {}) =>
+  new Vuex.Store(createStoreOptions(approvalsModule, settings));

ee/app/assets/javascripts/approvals/stores/modules/base/getters.js

+export const isEmpty = state => !state.rules || !state.rules.length;
+
+export default () => {};

ee/app/assets/javascripts/approvals/stores/modules/base/index.js

+import createState from './state';
+import mutations from './mutations';
+import * as getters from './getters';
+
+export default () => ({
+  state: createState(),
+  mutations,
+  getters,
+});

ee/app/assets/javascripts/approvals/stores/modules/base/mutation_types.js

+export const SET_LOADING = 'SET_LOADING';
+export const SET_APPROVAL_SETTINGS = 'SET_APPROVAL_SETTINGS';

ee/app/assets/javascripts/approvals/stores/modules/base/mutations.js

+import * as types from './mutation_types';
+
+export default {
+  [types.SET_LOADING](state, isLoading) {
+    state.isLoading = isLoading;
+  },
+  [types.SET_APPROVAL_SETTINGS](state, settings) {
+    state.hasLoaded = true;
+    state.rules = settings.rules;
+    state.fallbackApprovalsRequired = settings.fallbackApprovalsRequired;
+    state.minFallbackApprovalsRequired = settings.minFallbackApprovalsRequired;
+  },
+};

ee/app/assets/javascripts/approvals/stores/modules/base/state.js

+export default () => ({
+  hasLoaded: false,
+  isLoading: false,
+  rules: [],
+  fallbackApprovalsRequired: 0,
+  minFallbackApprovalsRequired: 0,
+});

ee/app/assets/javascripts/approvals/stores/modules/mr_edit/actions.js

+import createFlash from '~/flash';
+import _ from 'underscore';
+import { __ } from '~/locale';
+import Api from '~/api';
+import axios from '~/lib/utils/axios_utils';
+import * as types from './mutation_types';
+import { mapMRApprovalSettingsResponse } from '../../../mappers';
+
+const fetchGroupMembers = _.memoize(id => Api.groupMembers(id).then(response => response.data));
+
+const fetchApprovers = ({ userRecords, groups }) => {
+  const groupUsersAsync = Promise.all(groups.map(fetchGroupMembers));
+
+  return groupUsersAsync
+    .then(_.flatten)
+    .then(groupUsers => groupUsers.concat(userRecords))
+    .then(users => _.uniq(users, false, x => x.id));
+};
+
+const seedApprovers = rule =>
+  rule.groups || rule.userRecords
+    ? fetchApprovers(rule).then(approvers => ({
+        ...rule,
+        approvers,
+      }))
+    : Promise.resolve(rule);
+
+const seedUsers = ({ userRecords, ...rule }) =>
+  userRecords ? { ...rule, users: userRecords } : rule;
+
+const seedGroups = ({ groupRecords, ...rule }) =>
+  groupRecords ? { ...rule, groups: groupRecords } : rule;
+
+const seedLocalRule = rule =>
+  seedApprovers(rule)
+    .then(seedUsers)
+    .then(seedGroups);
+
+const seedNewRule = rule => ({
+  ...rule,
+  isNew: true,
+  id: _.uniqueId('new'),
+});
+
+export const requestRules = ({ commit }) => {
+  commit(types.SET_LOADING, true);
+};
+
+export const receiveRulesSuccess = ({ commit }, settings) => {
+  commit(types.SET_LOADING, false);
+  commit(types.SET_APPROVAL_SETTINGS, settings);
+};
+
+export const receiveRulesError = () => {
+  createFlash(__('An error occurred fetching the approval rules.'));
+};
+
+export const fetchRules = ({ rootState, dispatch }) => {
+  dispatch('requestRules');
+
+  const { mrSettingsPath, projectSettingsPath } = rootState.settings;
+  const path = mrSettingsPath || projectSettingsPath;
+
+  return axios
+    .get(path)
+    .then(response => mapMRApprovalSettingsResponse(response.data))
+    .then(settings => ({
+      ...settings,
+      rules: settings.rules.map(x => (x.id ? x : seedNewRule(x))),
+    }))
+    .then(settings => dispatch('receiveRulesSuccess', settings))
+    .catch(() => dispatch('receiveRulesError'));
+};
+
+export const postRule = ({ commit, dispatch }, rule) =>
+  seedLocalRule(rule)
+    .then(seedNewRule)
+    .then(newRule => {
+      commit(types.POST_RULE, newRule);
+      dispatch('createModal/close');
+    })
+    .catch(e => {
+      createFlash(__('An error occurred fetching the approvers for the new rule.'));
+      throw e;
+    });
+
+export const putRule = ({ commit, dispatch }, rule) =>
+  seedLocalRule(rule)
+    .then(newRule => {
+      commit(types.PUT_RULE, newRule);
+      dispatch('createModal/close');
+    })
+    .catch(e => {
+      createFlash(__('An error occurred fetching the approvers for the new rule.'));
+      throw e;
+    });
+
+export const deleteRule = ({ commit, dispatch }, id) => {
+  commit(types.DELETE_RULE, id);
+  dispatch('deleteModal/close');
+};
+
+export const putFallbackRule = ({ commit, dispatch }, fallback) => {
+  commit(types.SET_FALLBACK_RULE, fallback);
+  dispatch('createModal/close');
+};
+
+export const requestEditRule = ({ dispatch }, rule) => {
+  dispatch('createModal/open', rule);
+};
+
+export const requestDeleteRule = ({ dispatch }, rule) => {
+  dispatch('deleteRule', rule.id);
+};
+
+export default () => {};

ee/app/assets/javascripts/approvals/stores/modules/mr_edit/index.js

+import base from '../base';
+import * as actions from './actions';
+import mutations from './mutations';
+import createState from './state';
+
+export default () => ({
+  ...base(),
+  state: createState(),
+  actions,
+  mutations,
+});

ee/app/assets/javascripts/approvals/stores/modules/mr_edit/mutation_types.js

+export * from '../base/mutation_types';
+
+export const DELETE_RULE = 'DELETE_RULE';
+export const PUT_RULE = 'PUT_RULE';
+export const POST_RULE = 'POST_RULE';
+export const SET_FALLBACK_RULE = 'SET_FALLBACK_RULE';

ee/app/assets/javascripts/approvals/stores/modules/mr_edit/mutations.js

+import _ from 'underscore';
+import base from '../base/mutations';
+import * as types from './mutation_types';
+
+export default {
+  ...base,
+  [types.DELETE_RULE](state, id) {
+    const idx = _.findIndex(state.rules, x => x.id === id);
+
+    if (idx < 0) {
+      return;
+    }
+
+    const rule = state.rules[idx];
+
+    // Keep track of rules we need to submit that are deleted
+    if (!rule.isNew) {
+      state.rulesToDelete.push(rule.id);
+    }
+
+    state.rules.splice(idx, 1);
+  },
+  [types.PUT_RULE](state, { id, ...newRule }) {
+    const idx = _.findIndex(state.rules, x => x.id === id);
+
+    if (idx < 0) {
+      return;
+    }
+
+    const rule = { ...state.rules[idx], ...newRule };
+    state.rules.splice(idx, 1, rule);
+  },
+  [types.POST_RULE](state, rule) {
+    state.rules.push(rule);
+  },
+  [types.SET_FALLBACK_RULE](state, fallback) {
+    state.fallbackApprovalsRequired = fallback.approvalsRequired;
+  },
+};

ee/app/assets/javascripts/approvals/stores/modules/mr_edit/state.js

+import baseState from '../base/state';
+
+export default () => ({
+  ...baseState(),
+  rulesToDelete: [],
+});

ee/app/assets/javascripts/approvals/stores/modules/project_settings/actions.js

+import createFlash from '~/flash';
+import { __ } from '~/locale';
+import axios from '~/lib/utils/axios_utils';
+import * as types from '../base/mutation_types';
+import {
+  mapApprovalRuleRequest,
+  mapApprovalSettingsResponse,
+  mapApprovalFallbackRuleRequest,
+} from '../../../mappers';
+
+export const requestRules = ({ commit }) => {
+  commit(types.SET_LOADING, true);
+};
+
+export const receiveRulesSuccess = ({ commit }, approvalSettings) => {
+  commit(types.SET_APPROVAL_SETTINGS, approvalSettings);
+  commit(types.SET_LOADING, false);
+};
+
+export const receiveRulesError = () => {
+  createFlash(__('An error occurred fetching the approval rules.'));
+};
+
+export const fetchRules = ({ rootState, dispatch }) => {
+  const { settingsPath } = rootState.settings;
+
+  dispatch('requestRules');
+
+  return axios
+    .get(settingsPath)
+    .then(response => dispatch('receiveRulesSuccess', mapApprovalSettingsResponse(response.data)))
+    .catch(() => dispatch('receiveRulesError'));
+};
+
+export const postRuleSuccess = ({ dispatch }) => {
+  dispatch('createModal/close');
+  dispatch('fetchRules');
+};
+
+export const postRuleError = () => {
+  createFlash(__('An error occurred while updating approvers'));
+};
+
+export const postRule = ({ rootState, dispatch }, rule) => {
+  const { rulesPath } = rootState.settings;
+
+  return axios
+    .post(rulesPath, mapApprovalRuleRequest(rule))
+    .then(() => dispatch('postRuleSuccess'))
+    .catch(() => dispatch('postRuleError'));
+};
+
+export const putRule = ({ rootState, dispatch }, { id, ...newRule }) => {
+  const { rulesPath } = rootState.settings;
+
+  return axios
+    .put(`${rulesPath}/${id}`, mapApprovalRuleRequest(newRule))
+    .then(() => dispatch('postRuleSuccess'))
+    .catch(() => dispatch('postRuleError'));
+};
+
+export const deleteRuleSuccess = ({ dispatch }) => {
+  dispatch('deleteModal/close');
+  dispatch('fetchRules');
+};
+
+export const deleteRuleError = () => {
+  createFlash(__('An error occurred while deleting the approvers group'));
+};
+
+export const deleteRule = ({ rootState, dispatch }, id) => {
+  const { rulesPath } = rootState.settings;
+
+  return axios
+    .delete(`${rulesPath}/${id}`)
+    .then(() => dispatch('deleteRuleSuccess'))
+    .catch(() => dispatch('deleteRuleError'));
+};
+
+export const putFallbackRuleSuccess = ({ dispatch }) => {
+  dispatch('createModal/close');
+  dispatch('fetchRules');
+};
+
+export const putFallbackRuleError = () => {
+  createFlash(__('An error occurred while saving the approval settings'));
+};
+
+export const putFallbackRule = ({ rootState, dispatch }, fallback) => {
+  const { projectPath } = rootState.settings;
+
+  return axios
+    .put(projectPath, mapApprovalFallbackRuleRequest(fallback))
+    .then(() => dispatch('putFallbackRuleSuccess'))
+    .catch(() => dispatch('putFallbackRuleError'));
+};
+
+export const requestEditRule = ({ dispatch }, rule) => {
+  dispatch('createModal/open', rule);
+};
+
+export const requestDeleteRule = ({ dispatch }, rule) => {
+  dispatch('deleteModal/open', rule);
+};
+
+export default () => {};

ee/app/assets/javascripts/approvals/stores/modules/project_settings/index.js

+import base from '../base';
+import * as actions from './actions';
+
+export default () => ({
+  ...base(),
+  actions,
+});

ee/app/assets/javascripts/approvals/stores/state.js

+export const DEFAULT_SETTINGS = {
+  canEdit: true,
+  allowMultiRule: false,
+};
+
+export default (settings = {}) => ({
+  settings: {
+    ...DEFAULT_SETTINGS,
+    ...settings,
+  },
+});

ee/app/assets/javascripts/pages/projects/edit/index.js

@@ -5,6 +5,7 @@ import UsersSelect from '~/users_select';
 import UserCallout from '~/user_callout';
 import groupsSelect from '~/groups_select';
 import ApproversSelect from 'ee/approvers_select';
+import mountApprovals from 'ee/approvals/mount_project_settings';
 import initServiceDesk from 'ee/projects/settings_service_desk';
 
 document.addEventListener('DOMContentLoaded', () => {
@@ -15,4 +16,5 @@ document.addEventListener('DOMContentLoaded', () => {
   new UserCallout({ className: 'js-mr-approval-callout' });
   new ApproversSelect();
   initServiceDesk();
+  mountApprovals(document.getElementById('js-mr-approvals-settings'));
 });

ee/app/assets/javascripts/pages/projects/merge_requests/shared/init_form.js

-import initApprovals from '../../../../approvals';
+import initApprovals from 'ee/approvals/setup_single_rule_approvals';
+import mountApprovals from 'ee/approvals/mount_mr_edit';
 
-export default () => initApprovals();
+export default () => {
+  initApprovals();
+  mountApprovals(document.getElementById('js-mr-approvals-input'));
+};

ee/app/assets/javascripts/vue_merge_request_widget/components/approvals/index.js

+import MultipleRuleApprovals from './multiple_rule/approvals.vue';
+import SingleRuleApprovals from './single_rule/approvals.vue';
+
+export default {
+  functional: true,
+  render(h, context) {
+    const component = gon.features.approvalRules ? MultipleRuleApprovals : SingleRuleApprovals;
+    return h(component, context.data, context.children);
+  },
+};

ee/app/assets/javascripts/vue_merge_request_widget/components/approvals/messages.js

+import { __, s__ } from '~/locale';
+
+export const FETCH_LOADING = __('Checking approval status');
+export const FETCH_ERROR = s__(
+  'mrWidget|An error occurred while retrieving approval data for this merge request.',
+);
+export const APPROVE_ERROR = s__('mrWidget|An error occurred while submitting your approval.');
+export const UNAPPROVE_ERROR = s__('mrWidget|An error occurred while removing your approval.');
+export const APPROVED_MESSAGE = s__('mrWidget|Merge request approved.');

ee/app/assets/javascripts/vue_merge_request_widget/components/approvals/multiple_rule/approvals.vue

+<script>
+import { GlButton, GlLoadingIcon } from '@gitlab/ui';
+import createFlash from '~/flash';
+import { s__ } from '~/locale';
+import UserAvatarList from '~/vue_shared/components/user_avatar/user_avatar_list.vue';
+import eventHub from '~/vue_merge_request_widget/event_hub';
+import MrWidgetContainer from '~/vue_merge_request_widget/components/mr_widget_container.vue';
+import MrWidgetIcon from '~/vue_merge_request_widget/components/mr_widget_icon.vue';
+import ApprovalsSummary from './approvals_summary.vue';
+import ApprovalsFooter from './approvals_footer.vue';
+import { FETCH_LOADING, FETCH_ERROR, APPROVE_ERROR, UNAPPROVE_ERROR } from '../messages';
+
+export default {
+  name: 'MRWidgetMultipleRuleApprovals',
+  components: {
+    UserAvatarList,
+    MrWidgetContainer,
+    MrWidgetIcon,
+    ApprovalsSummary,
+    ApprovalsFooter,
+    GlButton,
+    GlLoadingIcon,
+  },
+  props: {
+    mr: {
+      type: Object,
+      required: true,
+    },
+    service: {
+      type: Object,
+      required: true,
+    },
+  },
+  data() {
+    return {
+      fetchingApprovals: true,
+      isApproving: false,
+      isExpanded: false,
+      isLoadingRules: false,
+    };
+  },
+  computed: {
+    hasFooter() {
+      return this.mr.approvals && this.mr.approvals.has_approval_rules;
+    },
+    approvedBy() {
+      return this.mr.approvals.approved_by.map(x => x.user);
+    },
+    userHasApproved() {
+      return this.mr.approvals.user_has_approved;
+    },
+    userCanApprove() {
+      return this.mr.approvals.user_can_approve;
+    },
+    showApprove() {
+      return !this.userHasApproved && this.userCanApprove && this.mr.isOpen;
+    },
+    showUnapprove() {
+      return this.userHasApproved && !this.userCanApprove && this.mr.state !== 'merged';
+    },
+    action() {
+      if (this.showApprove && this.mr.approvals.approved) {
+        return {
+          text: s__('mrWidget|Approve additionally'),
+          variant: 'primary',
+          inverted: true,
+          action: () => this.approve(),
+        };
+      } else if (this.showApprove) {
+        return {
+          text: s__('mrWidget|Approve'),
+          variant: 'primary',
+          action: () => this.approve(),
+        };
+      } else if (this.showUnapprove) {
+        return {
+          text: s__('mrWidget|Revoke approval'),
+          variant: 'warning',
+          inverted: true,
+          action: () => this.unapprove(),
+        };
+      }
+
+      return null;
+    },
+  },
+  watch: {
+    isExpanded(val) {
+      if (val) {
+        this.refreshAll();
+      }
+    },
+  },
+  created() {
+    this.refreshApprovals()
+      .then(() => {
+        this.fetchingApprovals = false;
+      })
+      .catch(() => createFlash(FETCH_ERROR));
+  },
+  methods: {
+    refreshAll() {
+      return Promise.all([this.refreshRules(), this.refreshApprovals()]).catch(() =>
+        createFlash(FETCH_ERROR),
+      );
+    },
+    refreshRules() {
+      this.isLoadingRules = true;
+
+      return this.service.fetchApprovalSettings().then(settings => {
+        this.mr.setApprovalRules(settings);
+        this.isLoadingRules = false;
+      });
+    },
+    refreshApprovals() {
+      return this.service.fetchApprovals().then(data => {
+        this.mr.setApprovals(data);
+      });
+    },
+    approve() {
+      this.updateApproval(() => this.service.approveMergeRequest(), APPROVE_ERROR);
+    },
+    unapprove() {
+      this.updateApproval(() => this.service.unapproveMergeRequest(), UNAPPROVE_ERROR);
+    },
+    updateApproval(serviceFn, error) {
+      this.isApproving = true;
+
+      return serviceFn()
+        .then(data => {
+          this.mr.setApprovals(data);
+          eventHub.$emit('MRWidgetUpdateRequested');
+          this.isApproving = false;
+        })
+        .catch(() => {
+          createFlash(error);
+          this.isApproving = false;
+        })
+        .then(() => this.refreshRules());
+    },
+  },
+  FETCH_LOADING,
+};
+</script>
+
+<template>
+  <mr-widget-container>
+    <div class="js-mr-approvals d-flex align-items-start align-items-md-center">
+      <mr-widget-icon name="approval" />
+      <div v-if="fetchingApprovals">{{ $options.FETCH_LOADING }}</div>
+      <template v-else>
+        <gl-button
+          v-if="action"
+          :variant="action.variant"
+          :class="{ 'btn-inverted': action.inverted }"
+          size="sm"
+          class="mr-3"
+          @click="action.action"
+        >
+          <gl-loading-icon v-if="isApproving" inline />
+          {{ action.text }}
+        </gl-button>
+        <approvals-summary
+          :approvals-left="mr.approvals.approvals_left"
+          :rules-left="mr.approvals.approvalRuleNamesLeft"
+          :approvers="approvedBy"
+        />
+      </template>
+    </div>
+    <approvals-footer
+      v-if="hasFooter"
+      slot="footer"
+      v-model="isExpanded"
+      :suggested-approvers="mr.approvals.suggested_approvers"
+      :approval-rules="mr.approvalRules"
+      :is-loading-rules="isLoadingRules"
+    />
+  </mr-widget-container>
+</template>

ee/app/assets/javascripts/vue_merge_request_widget/components/approvals/multiple_rule/approvals_footer.vue

+<script>
+import { GlButton, GlLoadingIcon } from '@gitlab/ui';
+import { __ } from '~/locale';
+import Icon from '~/vue_shared/components/icon.vue';
+import UserAvatarList from '~/vue_shared/components/user_avatar/user_avatar_list.vue';
+import ApprovalsList from './approvals_list.vue';
+
+export default {
+  components: {
+    Icon,
+    GlButton,
+    GlLoadingIcon,
+    UserAvatarList,
+    ApprovalsList,
+  },
+  props: {
+    suggestedApprovers: {
+      type: Array,
+      required: true,
+    },
+    approvalRules: {
+      type: Array,
+      required: true,
+    },
+    value: {
+      type: Boolean,
+      required: false,
+      default: true,
+    },
+    isLoadingRules: {
+      type: Boolean,
+      required: false,
+      default: false,
+    },
+  },
+  computed: {
+    isCollapsed() {
+      return !this.value;
+    },
+    ariaLabel() {
+      return this.isCollapsed ? __('Expand approvers') : __('Collapse approvers');
+    },
+    angleIcon() {
+      return this.isCollapsed ? 'chevron-right' : 'chevron-down';
+    },
+    suggestedApproversTrimmed() {
+      return this.suggestedApprovers.slice(0, Math.min(5, this.suggestedApprovers.length));
+    },
+  },
+  methods: {
+    toggle() {
+      this.$emit('input', !this.value);
+    },
+  },
+};
+</script>
+
+<template>
+  <div>
+    <div class="mr-widget-extension d-flex align-items-center pl-3">
+      <button
+        class="btn btn-blank square s32 d-flex-center append-right-default"
+        type="button"
+        :aria-label="ariaLabel"
+        @click="toggle"
+      >
+        <gl-loading-icon v-if="!isCollapsed && isLoadingRules" />
+        <icon v-else :name="angleIcon" :size="16" />
+      </button>
+      <template v-if="isCollapsed">
+        <user-avatar-list :items="suggestedApproversTrimmed" :breakpoint="0" empty-text="" />
+        <gl-button variant="link" @click="toggle">{{ __('View eligible approvers') }}</gl-button>
+      </template>
+      <template v-else>
+        <gl-button variant="link" @click="toggle">{{ __('Collapse') }}</gl-button>
+      </template>
+    </div>
+    <div v-if="!isCollapsed && approvalRules.length" class="border-top">
+      <approvals-list :approval-rules="approvalRules" />
+    </div>
+  </div>
+</template>

ee/app/assets/javascripts/vue_merge_request_widget/components/approvals/multiple_rule/approvals_list.vue

+<script>
+import { sprintf, __ } from '~/locale';
+import UserAvatarList from '~/vue_shared/components/user_avatar/user_avatar_list.vue';
+import ApprovedIcon from './approved_icon.vue';
+
+export default {
+  components: {
+    UserAvatarList,
+    ApprovedIcon,
+  },
+  props: {
+    approvalRules: {
+      type: Array,
+      required: true,
+    },
+  },
+  methods: {
+    pendingApprovalsText(rule) {
+      if (!rule.approvals_required) {
+        return __('Optional');
+      }
+
+      return sprintf(__('%{count} of %{total}'), {
+        count: rule.approved_by.length,
+        total: rule.approvals_required,
+      });
+    },
+    isApproved(rule) {
+      return rule.approvals_required > 0 && rule.approvals_required <= rule.approved_by.length;
+    },
+    summaryText(rule) {
+      return rule.approvals_required === 0
+        ? this.summaryOptionalText(rule)
+        : this.summaryRequiredText(rule);
+    },
+    summaryRequiredText(rule) {
+      return sprintf(__('%{count} of %{required} approvals from %{name}'), {
+        count: rule.approved_by.length,
+        required: rule.approvals_required,
+        name: rule.name,
+      });
+    },
+    summaryOptionalText(rule) {
+      return sprintf(__('%{count} approvals from %{name}'), {
+        count: rule.approved_by.length,
+        name: rule.name,
+      });
+    },
+  },
+};
+</script>
+
+<template>
+  <table class="table m-0">
+    <thead class="thead-white text-nowrap">
+      <tr class="d-none d-sm-table-row">
+        <th class="w-0"></th>
+        <th>{{ s__('MRApprovals|Approvers') }}</th>
+        <th class="w-50"></th>
+        <th>{{ s__('MRApprovals|Pending approvals') }}</th>
+        <th>{{ s__('MRApprovals|Approved by') }}</th>
+      </tr>
+    </thead>
+    <tbody>
+      <tr v-for="rule in approvalRules" :key="rule.id">
+        <td class="w-0"><approved-icon :is-approved="isApproved(rule)" /></td>
+        <td :colspan="rule.fallback ? 2 : 1">
+          <div class="d-none d-sm-block js-name">{{ rule.name }}</div>
+          <div class="d-flex d-sm-none flex-column js-summary">
+            <span>{{ summaryText(rule) }}</span>
+            <user-avatar-list
+              v-if="!rule.fallback"
+              class="mt-2"
+              :items="rule.approvers"
+              :img-size="24"
+            />
+            <div v-if="rule.approved_by.length" class="mt-2">
+              <span>{{ s__('MRApprovals|Approved by') }}</span>
+              <user-avatar-list
+                class="d-inline-block align-middle"
+                :items="rule.approved_by"
+                :img-size="24"
+              />
+            </div>
+          </div>
+        </td>
+        <td v-if="!rule.fallback" class="d-none d-sm-table-cell js-approvers">
+          <div><user-avatar-list :items="rule.approvers" :img-size="24" /></div>
+        </td>
+        <td class="w-0 d-none d-sm-table-cell text-nowrap js-pending">
+          {{ pendingApprovalsText(rule) }}
+        </td>
+        <td class="d-none d-sm-table-cell js-approved-by">
+          <user-avatar-list :items="rule.approved_by" :img-size="24" />
+        </td>
+      </tr>
+    </tbody>
+  </table>
+</template>

ee/app/assets/javascripts/vue_merge_request_widget/components/approvals/multiple_rule/approvals_summary.vue

+<script>
+import { n__, sprintf } from '~/locale';
+import { toNounSeriesText } from '~/lib/utils/grammar';
+import UserAvatarList from '~/vue_shared/components/user_avatar/user_avatar_list.vue';
+import { APPROVED_MESSAGE } from '../messages';
+
+export default {
+  components: {
+    UserAvatarList,
+  },
+  props: {
+    approvalsLeft: {
+      type: Number,
+      required: true,
+    },
+    rulesLeft: {
+      type: Array,
+      required: false,
+      default: () => [],
+    },
+    approvers: {
+      type: Array,
+      required: false,
+      default: () => [],
+    },
+  },
+  computed: {
+    isApproved() {
+      return this.approvalsLeft <= 0;
+    },
+    message() {
+      if (this.isApproved) {
+        return APPROVED_MESSAGE;
+      }
+
+      if (!this.rulesLeft.length) {
+        return n__('Requires approval.', 'Requires %d more approvals.', this.approvalsLeft);
+      }
+
+      return sprintf(
+        n__(
+          'Requires approval from %{names}.',
+          'Requires %{count} more approvals from %{names}.',
+          this.approvalsLeft,
+        ),
+        {
+          names: toNounSeriesText(this.rulesLeft),
+          count: this.approvalsLeft,
+        },
+      );
+    },
+    hasApprovers() {
+      return !!this.approvers.length;
+    },
+  },
+  APPROVED_MESSAGE,
+};
+</script>
+
+<template>
+  <div>
+    <strong>{{ message }}</strong>
+    <template v-if="hasApprovers">
+      <span>{{ s__('mrWidget|Approved by') }}</span>
+      <user-avatar-list class="d-inline-block align-middle" :items="approvers" />
+    </template>
+  </div>
+</template>

ee/app/assets/javascripts/vue_merge_request_widget/components/approvals/multiple_rule/approved_icon.vue

+<script>
+import Icon from '~/vue_shared/components/icon.vue';
+
+export default {
+  components: {
+    Icon,
+  },
+  props: {
+    isApproved: {
+      type: Boolean,
+      required: true,
+    },
+  },
+};
+</script>
+
+<template>
+  <icon v-if="isApproved" name="mobile-issue-close" class="text-success" :size="16" />
+  <div v-else class="square s16"></div>
+</template>

ee/app/assets/javascripts/vue_merge_request_widget/components/approvals/mr_widget_approvals.vue → ee/app/assets/javascripts/vue_merge_request_widget/components/approvals/single_rule/approvals.vue

 <script>
-import Flash from '~/flash';
+import createFlash from '~/flash';
 import MrWidgetContainer from '~/vue_merge_request_widget/components/mr_widget_container.vue';
 import MrWidgetIcon from '~/vue_merge_request_widget/components/mr_widget_icon.vue';
-import { s__ } from '~/locale';
 import ApprovalsBody from './approvals_body.vue';
 import ApprovalsFooter from './approvals_footer.vue';
+import { FETCH_LOADING, FETCH_ERROR } from '../messages';
 
 export default {
-  name: 'MRWidgetApprovals',
+  name: 'MRWidgetSingleRuleApprovals',
   components: {
     ApprovalsBody,
     ApprovalsFooter,
@@ -46,18 +46,15 @@ export default {
     },
   },
   created() {
-    const flashErrorMessage = s__(
-      'mrWidget|An error occurred while retrieving approval data for this merge request.',
-    );
-
     this.service
       .fetchApprovals()
       .then(data => {
         this.mr.setApprovals(data);
         this.fetchingApprovals = false;
       })
-      .catch(() => new Flash(flashErrorMessage));
+      .catch(() => createFlash(FETCH_ERROR));
   },
+  FETCH_LOADING,
 };
 </script>
 <template>
@@ -65,7 +62,7 @@ export default {
     <div v-if="mr.approvalsRequired" class="media media-section js-mr-approvals align-items-center">
       <mr-widget-icon name="approval" />
       <div v-show="fetchingApprovals" class="mr-approvals-loading-state media-body">
-        <span class="approvals-loading-text"> {{ __('Checking approval status') }} </span>
+        <span class="approvals-loading-text"> {{ $options.FETCH_LOADING }} </span>
       </div>
       <div v-if="!fetchingApprovals" class="approvals-components media-body">
         <approvals-body

ee/app/assets/javascripts/vue_merge_request_widget/components/approvals/approvals_body.vue → ee/app/assets/javascripts/vue_merge_request_widget/components/approvals/single_rule/approvals_body.vue

@@ -5,6 +5,7 @@ import Icon from '~/vue_shared/components/icon.vue';
 import MrWidgetAuthor from '~/vue_merge_request_widget/components/mr_widget_author.vue';
 import tooltip from '~/vue_shared/directives/tooltip';
 import eventHub from '~/vue_merge_request_widget/event_hub';
+import { APPROVE_ERROR } from '../messages';
 
 export default {
   name: 'ApprovalsBody',
@@ -128,7 +129,7 @@ export default {
         })
         .catch(() => {
           this.approving = false;
-          Flash(s__('mrWidget|An error occurred while submitting your approval.'));
+          Flash(APPROVE_ERROR);
         });
     },
   },

ee/app/assets/javascripts/vue_merge_request_widget/components/approvals/approvals_footer.vue → ee/app/assets/javascripts/vue_merge_request_widget/components/approvals/single_rule/approvals_footer.vue

@@ -5,6 +5,7 @@ import UserAvatarLink from '~/vue_shared/components/user_avatar/user_avatar_link
 
 import { s__ } from '~/locale';
 import eventHub from '~/vue_merge_request_widget/event_hub';
+import { UNAPPROVE_ERROR } from '../messages';
 
 export default {
   name: 'ApprovalsFooter',
@@ -76,7 +77,7 @@ export default {
         })
         .catch(() => {
           this.unapproving = false;
-          Flash(s__('mrWidget|An error occurred while removing your approval.'));
+          Flash(UNAPPROVE_ERROR);
         });
     },
   },

ee/app/assets/javascripts/vue_merge_request_widget/mappers.js

+import { __ } from '~/locale';
+import { RULE_TYPE_REGULAR, RULE_TYPE_FALLBACK } from 'ee/approvals/constants';
+
+function mapApprovalRule(rule, settings) {
+  if (rule.rule_type === RULE_TYPE_FALLBACK) {
+    // Show a friendly name for the fallback rule
+    return {
+      ...rule,
+      name: __('All Members'),
+      fallback: true,
+    };
+  } else if (rule.rule_type === RULE_TYPE_REGULAR && !settings.multiple_approval_rules_available) {
+    // Give a friendly name to the single rule
+    return {
+      ...rule,
+      name: __('Merge Request'),
+    };
+  }
+
+  return rule;
+}
+
+/**
+ * Map the approval rules response for use by the MR widget
+ */
+export function mapApprovalRulesResponse(rules, settings) {
+  return rules.map(x => mapApprovalRule(x, settings));
+}
+
+/**
+ * Map the overall approvals response for use by the MR widget
+ */
+export function mapApprovalsResponse(data) {
+  return {
+    ...data,
+    // Filter out empty names (fallback rule has no name) because
+    // the empties would look weird.
+    approvalRuleNamesLeft: data.multiple_approval_rules_available
+      ? data.approval_rules_left.map(x => x.name).filter(x => x)
+      : [],
+  };
+}

ee/app/assets/javascripts/vue_merge_request_widget/mr_widget_options.vue

@@ -7,7 +7,7 @@ import MrWidgetLicenses from 'ee/vue_shared/license_management/mr_widget_license
 
 import { n__, s__, __, sprintf } from '~/locale';
 import CEWidgetOptions from '~/vue_merge_request_widget/mr_widget_options.vue';
-import MrWidgetApprovals from './components/approvals/mr_widget_approvals.vue';
+import MrWidgetApprovals from './components/approvals';
 import MrWidgetGeoSecondaryNode from './components/states/mr_widget_secondary_geo_node.vue';
 
 export default {
@@ -144,6 +144,10 @@ export default {
       return {
         ...base,
         approvalsPath: store.approvalsPath,
+        apiApprovalsPath: store.apiApprovalsPath,
+        apiApprovalSettingsPath: store.apiApprovalSettingsPath,
+        apiApprovePath: store.apiApprovePath,
+        apiUnapprovePath: store.apiUnapprovePath,
       };
     },
     fetchCodeQuality() {

ee/app/assets/javascripts/vue_merge_request_widget/services/mr_widget_service.js

 import axios from '~/lib/utils/axios_utils';
-
 import CEWidgetService from '~/vue_merge_request_widget/services/mr_widget_service';
 
 export default class MRWidgetService extends CEWidgetService {
@@ -7,6 +6,21 @@ export default class MRWidgetService extends CEWidgetService {
     super(mr);
 
     this.approvalsPath = mr.approvalsPath;
+
+    // This feature flag will be the default behavior when
+    // https://gitlab.com/gitlab-org/gitlab-ee/issues/1979 is closed
+    if (gon.features.approvalRules) {
+      this.apiApprovalsPath = mr.apiApprovalsPath;
+      this.apiApprovalSettingsPath = mr.apiApprovalSettingsPath;
+      this.apiApprovePath = mr.apiApprovePath;
+      this.apiUnapprovePath = mr.apiUnapprovePath;
+
+      this.fetchApprovals = () => axios.get(this.apiApprovalsPath).then(res => res.data);
+      this.fetchApprovalSettings = () =>
+        axios.get(this.apiApprovalSettingsPath).then(res => res.data);
+      this.approveMergeRequest = () => axios.post(this.apiApprovePath).then(res => res.data);
+      this.unapproveMergeRequest = () => axios.post(this.apiUnapprovePath).then(res => res.data);
+    }
   }
 
   fetchApprovals() {

ee/app/assets/javascripts/vue_merge_request_widget/stores/mr_widget_store.js

 import CEMergeRequestStore from '~/vue_merge_request_widget/stores/mr_widget_store';
 import { filterByKey } from 'ee/vue_shared/security_reports/store/utils';
+import { mapApprovalsResponse, mapApprovalRulesResponse } from '../mappers';
 
 export default class MergeRequestStore extends CEMergeRequestStore {
   constructor(data) {
@@ -42,17 +43,26 @@ export default class MergeRequestStore extends CEMergeRequestStore {
   initApprovals(data) {
     this.isApproved = this.isApproved || false;
     this.approvals = this.approvals || null;
+    this.approvalRules = this.approvalRules || [];
     this.approvalsPath = data.approvals_path || this.approvalsPath;
     this.approvalsRequired = data.approvalsRequired || Boolean(this.approvalsPath);
+    this.apiApprovalsPath = data.api_approvals_path || this.apiApprovalsPath;
+    this.apiApprovalSettingsPath = data.api_approval_settings_path || this.apiApprovalSettingsPath;
+    this.apiApprovePath = data.api_approve_path || this.apiApprovePath;
+    this.apiUnapprovePath = data.api_unapprove_path || this.apiUnapprovePath;
   }
 
   setApprovals(data) {
-    this.approvals = data;
+    this.approvals = mapApprovalsResponse(data);
     this.approvalsLeft = !!data.approvals_left;
     this.isApproved = !this.approvalsLeft || false;
     this.preventMerge = this.approvalsRequired && this.approvalsLeft;
   }
 
+  setApprovalRules(data) {
+    this.approvalRules = mapApprovalRulesResponse(data.rules, this.approvals);
+  }
+
   initCodeclimate(data) {
     this.codeclimate = data.codeclimate;
     this.codeclimateMetrics = {

ee/app/controllers/ee/projects/merge_requests_controller.rb

@@ -8,6 +8,10 @@ module EE
       APPROVAL_RENDERING_ACTIONS = [:approve, :approvals, :unapprove].freeze
 
       prepended do
+        before_action only: [:show] do
+          push_frontend_feature_flag(:approval_rules)
+        end
+
         before_action :whitelist_query_limiting_ee_merge, only: [:merge]
         before_action :whitelist_query_limiting_ee_show, only: [:show]
       end

ee/app/views/projects/_merge_request_approvals_settings_form.html.haml

 - can_override_approvers = project.can_override_approvers?
 
-.form-group
-  = form.label :approver_ids, class: 'label-bold' do
-    = _("Approvers")
-  = hidden_field_tag "project[approver_ids]"
-  = hidden_field_tag "project[approver_group_ids]"
-  .input-group.input-btn-group
-    = hidden_field_tag :approver_user_and_group_ids, '', { class: 'js-select-user-and-group input-large', tabindex: 1, 'data-name': 'project', :style => "max-width: unset;" }
-    %button.btn.btn-success.js-add-approvers{ type: 'button', title: 'Add approvers(s)' }
-      = _("Add")
-  .form-text.text-muted
-    = _("Add users or groups who are allowed to approve every merge request")
-
-  .card.prepend-top-10.js-current-approvers
-    .load-wrapper.hidden
-      = icon('spinner spin', class: 'approver-list-loader')
-    .card-header
-      = _("Approvers")
-      %span.badge.badge-pill
-        - ids = []
-        - project.approvers.each do |user|
-          - ids << user.user_id
-        - project.approver_groups.each do |group|
-          - group.users.each do |user|
-            - unless ids.include?(user.id)
-              - ids << user.id
-        = ids.count
-    %ul.content-list.approver-list
-      - project.approvers.each do |approver|
-        %li.approver.settings-flex-row.js-approver{ data: { id: approver.user_id } }
-          = link_to approver.user.name, approver.user
-          .float-right
-            - confirm_message = _("Are you sure you want to remove approver %{name}?") % { name: approver.user.name }
-            %button{ href: project_approver_path(project, approver), data: { confirm: confirm_message }, class: "btn btn-remove js-approver-remove", title: _("Remove approver") }
-              = icon("trash")
-      - project.approver_groups.each do |approver_group|
-        %li.approver-group.settings-flex-row.js-approver-group{ data: { id: approver_group.group.id } }
-          %span
-            %span.light
-              = _("Group:")
-            = link_to approver_group.group.name, approver_group.group
-            %span.badge.badge-pill
-              = approver_group.group.members.count
-          .float-right
-            - confirm_message = _("Are you sure you want to remove group %{name}?") % { name: approver_group.group.name }
-            %button{ href: project_approver_group_path(project, approver_group), data: { confirm: confirm_message }, class: "btn btn-remove js-approver-remove", title: _("Remove group") }
-              = icon("trash")
-      - if project.approvers.empty? && project.approver_groups.empty?
-        %li= _("There are no approvers")
-
-.form-group
-  = form.label :approvals_before_merge, class: 'label-bold' do
-    = _("Approvals required")
-  = form.number_field :approvals_before_merge, class: "form-control", min: 0
-  .form-text.text-muted
-    = _("Set number of approvers required before open merge requests can be merged")
+- if Feature.enabled?(:approval_rules, project)
+  = render 'shared/merge_request_approvals_settings/multiple_rules_form', form: form, project: project
+- else
+  = render 'shared/merge_request_approvals_settings/single_rule_form', form: form, project: project
 
 .form-group
   .form-check

ee/app/views/shared/issuable/_approvals.html.haml

@@ -11,69 +11,10 @@
   = form.label :approver_ids, class: 'col-form-label col-sm-2' do
     Approvers
   .col-sm-10
-    - if can_update_approvers
-      - skip_users = [*presenter.all_approvers_including_groups, *(issuable.authors unless presenter.authors_can_approve?)].compact
-
-      = users_select_tag("merge_request[approver_ids]",
-        multiple: true,
-        class: 'input-large',
-        email_user: true,
-        skip_users: skip_users,
-        project: issuable.target_project)
-
-      .form-text.text-muted
-        This merge request must be approved by these users.
-        You can override the project settings by setting your own list of approvers.
-
-      - skip_groups = presenter.overall_approver_groups.pluck(:group_id) # rubocop: disable CodeReuse/ActiveRecord
-      = groups_select_tag('merge_request[approver_group_ids]', multiple: true, data: { skip_groups: skip_groups, all_available: true, project: issuable.target_project }, class: 'input-large')
-      .form-text.text-muted
-        This merge request must be approved by members of these groups.
-        You can override the project settings by setting your own list of approvers.
-
-    .card.prepend-top-10
-      .card-header
-        Approvers
-      %ul.content-list.approver-list.qa-approver-list
-        - if presenter.all_approvers_including_groups.empty?
-          %li.no-approvers There are no approvers
-        - else
-          - unsaved_approvers = !presenter.approvers_overwritten?
-          - item_classes = unsaved_approvers ? ['unsaved-approvers'] : []
-          - presenter.overall_approvers.each do |approver|
-            %li{ id: dom_id(approver), class: item_classes + ['approver'] }
-              = link_to approver.name, approver, class: 'qa-approver'
-              - if can_update_approvers
-                .float-right
-                  - if unsaved_approvers
-                    = link_to "#", data: { confirm: "Are you sure you want to remove approver #{approver.name}"}, class: "btn-sm btn btn-remove", title: 'Remove approver' do
-                      = icon("sign-out")
-                      Remove
-                  - else
-                    = link_to project_merge_request_approver_via_user_id_path(@project, issuable, user_id: approver.id), data: { confirm: "Are you sure you want to remove approver #{approver.name}"}, method: :delete, class: "btn-sm btn btn-remove", title: 'Remove approver' do
-                      = icon("sign-out")
-                      Remove
-          - presenter.overall_approver_groups.each do |approver_group|
-            %li{ id: dom_id(approver_group.group), class: item_classes + ['approver-group'] }
-              Group:
-              = link_to approver_group.group.name, approver_group.group
-              - if can_update_approvers
-                .float-right
-                  - if unsaved_approvers
-                    = link_to "#", data: { confirm: "Are you sure you want to remove group #{approver_group.group.name}"}, class: "btn-sm btn btn-remove", title: 'Remove group' do
-                      = icon("sign-out")
-                      Remove
-                  - else
-                    = link_to project_merge_request_approver_group_path(@project, issuable, approver_group), data: { confirm: "Are you sure you want to remove group #{approver_group.group.name}"}, method: :delete, class: "btn-sm btn btn-remove", title: 'Remove group' do
-                      = icon("sign-out")
-                      Remove
-
-    .col-sm-12
-      .form-group.row
-        = form.label :approvals_before_merge, class: 'label-bold' do
-          Approvals required
-        = form.number_field :approvals_before_merge, class: 'form-control', value: issuable.approvals_required, readonly: !can_update_approvers
-
+    - if Feature.enabled?(:approval_rules, @project)
+      = render 'shared/issuable/approvals_multiple_rule', issuable: issuable
+    - else
+      = render 'shared/issuable/approvals_single_rule', issuable: issuable, presenter: presenter, form: form
     - if can_update_approvers
       - approver_presenter = MergeRequestApproverPresenter.new(issuable, skip_user: current_user)
       .form-text.text-muted.suggested-approvers

ee/app/views/shared/issuable/_approvals_multiple_rule.html.haml

+#js-mr-approvals-input{ data: { 'project_id': @project.id,
+  'can_edit': can?(current_user, :update_approvers, issuable).to_s,
+  'allow_multi_rule': @project.multiple_approval_rules_available?.to_s,
+  'mr_id': issuable.iid,
+  'mr_settings_path': issuable.iid && api_v4_projects_merge_requests_approval_settings_path(id: @project.id, merge_request_iid: issuable.iid),
+  'project_settings_path': api_v4_projects_approval_settings_path(id: @project.id) } }
+  = sprite_icon('spinner', size: 24, css_class: 'gl-spinner')

ee/app/views/shared/issuable/_approvals_single_rule.html.haml

+- issuable = local_assigns.fetch(:issuable)
+- presenter = local_assigns.fetch(:presenter)
+- form = local_assigns.fetch(:form)
+
+- can_update_approvers = can?(current_user, :update_approvers, issuable)
+
+- if can_update_approvers
+  - skip_users = [*presenter.all_approvers_including_groups, *(issuable.authors unless presenter.authors_can_approve?)].compact
+
+  = users_select_tag("merge_request[approver_ids]",
+    multiple: true,
+    class: 'input-large',
+    email_user: true,
+    skip_users: skip_users,
+    project: issuable.target_project)
+
+  .form-text.text-muted
+    = _('This merge request must be approved by these users. You can override the project settings by setting your own list of approvers.')
+
+  - skip_groups = presenter.overall_approver_groups.pluck(:group_id) # rubocop: disable CodeReuse/ActiveRecord
+  = groups_select_tag('merge_request[approver_group_ids]', multiple: true, data: { skip_groups: skip_groups, all_available: true, project: issuable.target_project }, class: 'input-large')
+  .form-text.text-muted
+    = _('This merge request must be approved by members of these groups. You can override the project settings by setting your own list of approvers.')
+
+.card.prepend-top-10
+  .card-header
+    = _('Approvers')
+  %ul.content-list.approver-list.qa-approver-list
+    - if presenter.all_approvers_including_groups.empty?
+      %li.no-approvers= _('There are no approvers')
+    - else
+      - unsaved_approvers = !presenter.approvers_overwritten?
+      - item_classes = unsaved_approvers ? ['unsaved-approvers'] : []
+      - presenter.overall_approvers.each do |approver|
+        %li{ id: dom_id(approver), class: item_classes + ['approver'] }
+          = link_to approver.name, approver, class: 'qa-approver'
+          - if can_update_approvers
+            .float-right
+              - if unsaved_approvers
+                %button{ class: 'btn-sm btn btn-remove', title: _('Remove approver'), data: { confirm: _("Are you sure you want to remove approver %{name}") % { name: approver.name } } }
+                  = icon("sign-out")
+                  = _('Remove')
+              - else
+                = link_to project_merge_request_approver_via_user_id_path(@project, issuable, user_id: approver.id), data: { confirm: _("Are you sure you want to remove approver %{name}") % { name: approver.name } }, method: :delete, class: "btn-sm btn btn-remove", title: _('Remove approver') do
+                  = icon("sign-out")
+                  = _('Remove')
+      - presenter.overall_approver_groups.each do |approver_group|
+        %li{ id: dom_id(approver_group.group), class: item_classes + ['approver-group'] }
+          = _('Group:')
+          = link_to approver_group.group.name, approver_group.group
+          - if can_update_approvers
+            .float-right
+              - if unsaved_approvers
+                %button{ class: "btn-sm btn btn-remove", title: _('Remove group'), data: { confirm: _("Are you sure you want to remove group %{name}") % { name: approver_group.group.name } } }
+                  = icon("sign-out")
+                  = _('Remove')
+              - else
+                = link_to project_merge_request_approver_group_path(@project, issuable, approver_group), data: { confirm: _("Are you sure you want to remove group %{name}") % { name: approver_group.group.name } }, method: :delete, class: "btn-sm btn btn-remove", title: _('Remove group') do
+                  = icon("sign-out")
+                  = _('Remove')
+
+.col-sm-12
+  .form-group.row
+    = form.label :approvals_before_merge, class: 'label-bold' do
+      = _('Approvals required')
+    = form.number_field :approvals_before_merge, class: 'form-control', value: issuable.approvals_required, readonly: !can_update_approvers

ee/app/views/shared/merge_request_approvals_settings/_multiple_rules_form.html.haml

+.form-group
+  = form.label :approver_ids, class: 'label-bold' do
+    = _("Approvers")
+  #js-mr-approvals-settings{ data: { 'project_id': @project.id,
+    'project_path': api_v4_projects_path(id: @project.id),
+    'settings_path': api_v4_projects_approval_settings_path(id: @project.id),
+    'rules_path': api_v4_projects_approval_settings_rules_path(id: @project.id),
+    'allow_multi_rule': @project.multiple_approval_rules_available?.to_s } }
+    .text-center.prepend-top-default
+      = sprite_icon('spinner', size: 24, css_class: 'gl-spinner')

ee/app/views/shared/merge_request_approvals_settings/_single_rule_form.html.haml

+.form-group
+  = form.label :approver_ids, class: 'label-bold' do
+    = _("Approvers")
+  = hidden_field_tag "project[approver_ids]"
+  = hidden_field_tag "project[approver_group_ids]"
+  .input-group.input-btn-group
+    = hidden_field_tag :approver_user_and_group_ids, '', { class: 'js-select-user-and-group input-large', tabindex: 1, 'data-name': 'project', :style => "max-width: unset;" }
+    %button.btn.btn-success.js-add-approvers{ type: 'button', title: _('Add approver(s)') }
+      = _("Add")
+  .form-text.text-muted
+    = _("Add users or groups who are allowed to approve every merge request")
+
+  .card.prepend-top-10.js-current-approvers
+    .load-wrapper.hidden
+      = icon('spinner spin', class: 'approver-list-loader')
+    .card-header
+      = _("Approvers")
+      %span.badge.badge-pill
+        - ids = []
+        - project.approvers.each do |user|
+          - ids << user.user_id
+        - project.approver_groups.each do |group|
+          - group.users.each do |user|
+            - unless ids.include?(user.id)
+              - ids << user.id
+        = ids.count
+    %ul.content-list.approver-list
+      - project.approvers.each do |approver|
+        %li.approver.settings-flex-row.js-approver{ data: { id: approver.user_id } }
+          = link_to approver.user.name, approver.user
+          .float-right
+            - confirm_message = _("Are you sure you want to remove approver %{name}?") % { name: approver.user.name }
+            %button{ href: project_approver_path(project, approver), data: { confirm: confirm_message }, class: "btn btn-remove js-approver-remove", title: _("Remove approver") }
+              = icon("trash")
+      - project.approver_groups.each do |approver_group|
+        %li.approver-group.settings-flex-row.js-approver-group{ data: { id: approver_group.group.id } }
+          %span
+            %span.light
+              = _("Group:")
+            = link_to approver_group.group.name, approver_group.group
+            %span.badge.badge-pill
+              = approver_group.group.members.count
+          .float-right
+            - confirm_message = _("Are you sure you want to remove group %{name}?") % { name: approver_group.group.name }
+            %button{ href: project_approver_group_path(project, approver_group), data: { confirm: confirm_message }, class: "btn btn-remove js-approver-remove", title: _("Remove group") }
+              = icon("trash")
+      - if project.approvers.empty? && project.approver_groups.empty?
+        %li= _("There are no approvers")
+
+.form-group
+  = form.label :approvals_before_merge, class: 'label-bold' do
+    = _("Approvals required")
+  = form.number_field :approvals_before_merge, class: "form-control", min: 0
+  .form-text.text-muted
+    = _("Set number of approvers required before open merge requests can be merged")

ee/changelogs/unreleased/1979-fe-multiple-approval-rules.yml

+---
+title: Multiple blocking merge request approval rules (behind feature flag)
+merge_request: 9001
+author:
+type: added

ee/spec/features/merge_request/user_approves_spec.rb

@@ -5,6 +5,10 @@ describe 'Merge request > User approves', :js do
   let(:project) { create(:project, :public, :repository, approvals_before_merge: 1) }
   let(:merge_request) { create(:merge_request, source_project: project) }
 
+  before do
+    stub_feature_flags(approval_rules: false)
+  end
+
   context 'Approving by approvers from groups' do
     let(:other_user) { create(:user) }
     let(:group) { create :group }

ee/spec/features/merge_request/user_sees_approval_widget_spec.rb

@@ -5,6 +5,10 @@ describe 'Merge request > User sees approval widget', :js do
   let(:user) { project.creator }
   let(:merge_request) { create(:merge_request, source_project: project) }
 
+  before do
+    stub_feature_flags(approval_rules: false)
+  end
+
   context 'when merge when discussions resolved is active' do
     let(:project) do
       create(:project, :repository,

ee/spec/features/merge_request/user_sets_approvers_spec.rb

@@ -6,6 +6,10 @@ describe 'Merge request > User sets approvers', :js do
   let(:user) { create(:user) }
   let(:project) { create(:project, :public, :repository, approvals_before_merge: 1) }
 
+  before do
+    stub_feature_flags(approval_rules: false)
+  end
+
   context 'when editing an MR with a different author' do
     let(:author) { create(:user) }
     let(:merge_request) { create(:merge_request, author: author, source_project: project) }

ee/spec/features/projects/settings/merge_requests_settings_spec.rb

@@ -10,6 +10,8 @@ describe 'Project settings > [EE] Merge Requests', :js do
   let(:non_member) { create(:user) }
 
   before do
+    stub_feature_flags(approval_rules: false)
+
     sign_in(user)
     project.add_maintainer(user)
     group.add_developer(user)

ee/spec/javascripts/approvals/components/app_spec.js

+import { shallowMount, createLocalVue } from '@vue/test-utils';
+import Vuex from 'vuex';
+import { GlLoadingIcon, GlButton } from '@gitlab/ui';
+import App from 'ee/approvals/components/app.vue';
+import ModalRuleCreate from 'ee/approvals/components/modal_rule_create.vue';
+import ModalRuleRemove from 'ee/approvals/components/modal_rule_remove.vue';
+import { createStoreOptions } from 'ee/approvals/stores';
+import settingsModule from 'ee/approvals/stores/modules/project_settings';
+
+const localVue = createLocalVue();
+localVue.use(Vuex);
+
+const TEST_RULES_CLASS = 'js-fake-rules';
+const APP_PREFIX = 'lorem-ipsum';
+
+describe('EE Approvals App', () => {
+  let store;
+  let wrapper;
+  let slots;
+
+  const factory = () => {
+    wrapper = shallowMount(localVue.extend(App), {
+      localVue,
+      slots,
+      store: new Vuex.Store(store),
+      sync: false,
+    });
+  };
+  const findAddButton = () => wrapper.find(GlButton);
+  const findLoadingIcon = () => wrapper.find(GlLoadingIcon);
+  const findRules = () => wrapper.find(`.${TEST_RULES_CLASS}`);
+
+  beforeEach(() => {
+    slots = {
+      rules: `<div class="${TEST_RULES_CLASS}">These are the rules!</div>`,
+    };
+
+    store = createStoreOptions(settingsModule(), {
+      canEdit: true,
+      prefix: APP_PREFIX,
+    });
+    spyOn(store.modules.approvals.actions, 'fetchRules');
+    spyOn(store.modules.createModal.actions, 'open');
+  });
+
+  describe('when allow multi rule', () => {
+    beforeEach(() => {
+      store.state.settings.allowMultiRule = true;
+    });
+
+    it('dispatches fetchRules action on created', () => {
+      expect(store.modules.approvals.actions.fetchRules).not.toHaveBeenCalled();
+
+      factory();
+
+      expect(store.modules.approvals.actions.fetchRules).toHaveBeenCalledTimes(1);
+    });
+
+    it('renders create modal', () => {
+      factory();
+
+      const modal = wrapper.find(ModalRuleCreate);
+
+      expect(modal.exists()).toBe(true);
+      expect(modal.props('modalId')).toBe(`${APP_PREFIX}-approvals-create-modal`);
+    });
+
+    it('renders delete modal', () => {
+      factory();
+
+      const modal = wrapper.find(ModalRuleRemove);
+
+      expect(modal.exists()).toBe(true);
+      expect(modal.props('modalId')).toBe(`${APP_PREFIX}-approvals-remove-modal`);
+    });
+
+    describe('if not loaded', () => {
+      beforeEach(() => {
+        store.modules.approvals.state.hasLoaded = false;
+      });
+
+      it('shows loading icon', () => {
+        store.modules.approvals.state.isLoading = false;
+        factory();
+
+        expect(findLoadingIcon().exists()).toBe(true);
+      });
+    });
+
+    describe('if loaded and empty', () => {
+      beforeEach(() => {
+        store.modules.approvals.state = {
+          hasLoaded: true,
+          rules: [],
+          isLoading: false,
+        };
+      });
+
+      it('does not show Rules', () => {
+        factory();
+
+        expect(findRules().exists()).toBe(false);
+      });
+
+      it('shows loading icon if loading', () => {
+        store.modules.approvals.state.isLoading = true;
+        factory();
+
+        expect(findLoadingIcon().exists()).toBe(true);
+      });
+
+      it('does not show loading icon if not loading', () => {
+        store.modules.approvals.state.isLoading = false;
+        factory();
+
+        expect(findLoadingIcon().exists()).toBe(false);
+      });
+    });
+
+    describe('if not empty', () => {
+      beforeEach(() => {
+        store.modules.approvals.state.hasLoaded = true;
+        store.modules.approvals.state.rules = [{ id: 1 }];
+      });
+
+      it('shows rules', () => {
+        factory();
+
+        expect(findRules().exists()).toBe(true);
+      });
+
+      it('renders add button', () => {
+        factory();
+
+        const button = findAddButton();
+
+        expect(button.exists()).toBe(true);
+        expect(button.text()).toBe('Add approvers');
+      });
+
+      it('opens create modal when add button is clicked', () => {
+        factory();
+
+        findAddButton().vm.$emit('click');
+
+        expect(store.modules.createModal.actions.open).toHaveBeenCalledWith(
+          jasmine.anything(),
+          null,
+          undefined,
+        );
+      });
+
+      it('shows loading icon and rules if loading', () => {
+        store.modules.approvals.state.isLoading = true;
+        factory();
+
+        expect(findRules().exists()).toBe(true);
+        expect(findLoadingIcon().exists()).toBe(true);
+      });
+    });
+  });
+
+  describe('when allow only single rule', () => {
+    beforeEach(() => {
+      store.state.settings.allowMultiRule = false;
+    });
+
+    it('does not render add button', () => {
+      factory();
+
+      expect(findAddButton().exists()).toBe(false);
+    });
+  });
+});

ee/spec/javascripts/approvals/components/approvers_list_item_spec.js

+import { shallowMount, createLocalVue } from '@vue/test-utils';
+import { GlButton } from '@gitlab/ui';
+import Avatar from '~/vue_shared/components/project_avatar/default.vue';
+import { TYPE_USER, TYPE_GROUP } from 'ee/approvals/constants';
+import ApproversListItem from 'ee/approvals/components/approvers_list_item.vue';
+
+const localVue = createLocalVue();
+const TEST_USER = {
+  id: 1,
+  type: TYPE_USER,
+  name: 'Lorem Ipsum',
+};
+const TEST_GROUP = {
+  id: 1,
+  type: TYPE_GROUP,
+  name: 'Lorem Group',
+  full_path: 'dolar/sit/amit',
+};
+
+describe('Approvals ApproversListItem', () => {
+  let wrapper;
+
+  const factory = (options = {}) => {
+    wrapper = shallowMount(localVue.extend(ApproversListItem), {
+      ...options,
+      localVue,
+      sync: false,
+    });
+  };
+
+  describe('when user', () => {
+    beforeEach(() => {
+      factory({
+        propsData: {
+          approver: TEST_USER,
+        },
+      });
+    });
+
+    it('renders avatar', () => {
+      const avatar = wrapper.find(Avatar);
+
+      expect(avatar.exists()).toBe(true);
+      expect(avatar.props('project')).toEqual(TEST_USER);
+    });
+
+    it('renders name', () => {
+      expect(wrapper.text()).toContain(TEST_USER.name);
+    });
+
+    it('when remove clicked, emits remove', () => {
+      const button = wrapper.find(GlButton);
+      button.vm.$emit('click');
+
+      expect(wrapper.emittedByOrder()).toEqual([{ name: 'remove', args: [TEST_USER] }]);
+    });
+  });
+
+  describe('when group', () => {
+    beforeEach(() => {
+      factory({
+        propsData: {
+          approver: TEST_GROUP,
+        },
+      });
+    });
+
+    it('renders full_path', () => {
+      expect(wrapper.text()).toContain(TEST_GROUP.full_path);
+      expect(wrapper.text()).not.toContain(TEST_GROUP.name);
+    });
+  });
+});

ee/spec/javascripts/approvals/components/approvers_list_spec.js

+import { shallowMount, createLocalVue } from '@vue/test-utils';
+import ApproversListEmpty from 'ee/approvals/components/approvers_list_empty.vue';
+import ApproversListItem from 'ee/approvals/components/approvers_list_item.vue';
+import ApproversList from 'ee/approvals/components/approvers_list.vue';
+import { TYPE_USER, TYPE_GROUP } from 'ee/approvals/constants';
+
+const localVue = createLocalVue();
+const TEST_APPROVERS = [
+  { id: 1, type: TYPE_GROUP },
+  { id: 1, type: TYPE_USER },
+  { id: 2, type: TYPE_USER },
+];
+
+describe('ApproversList', () => {
+  let propsData;
+  let wrapper;
+
+  const factory = (options = {}) => {
+    wrapper = shallowMount(localVue.extend(ApproversList), {
+      ...options,
+      localVue,
+      propsData,
+    });
+  };
+
+  beforeEach(() => {
+    propsData = {};
+  });
+
+  afterEach(() => {
+    wrapper.destroy();
+  });
+
+  describe('when empty', () => {
+    beforeEach(() => {
+      propsData.value = [];
+    });
+
+    it('renders empty', () => {
+      factory();
+
+      expect(wrapper.find(ApproversListEmpty).exists()).toBe(true);
+      expect(wrapper.find('ul').exists()).toBe(false);
+    });
+  });
+
+  describe('when not empty', () => {
+    beforeEach(() => {
+      propsData.value = TEST_APPROVERS;
+    });
+
+    it('renders items', () => {
+      factory();
+
+      const items = wrapper.findAll(ApproversListItem).wrappers.map(item => item.props('approver'));
+
+      expect(items).toEqual(TEST_APPROVERS);
+    });
+
+    TEST_APPROVERS.forEach((approver, idx) => {
+      it(`when remove (${idx}), emits new input`, () => {
+        factory();
+
+        const item = wrapper.findAll(ApproversListItem).at(idx);
+        item.vm.$emit('remove', approver);
+
+        const expected = TEST_APPROVERS.filter((x, i) => i !== idx);
+
+        expect(wrapper.emittedByOrder()).toEqual([{ name: 'input', args: [expected] }]);
+      });
+    });
+  });
+});

ee/spec/javascripts/approvals/components/approvers_select_spec.js

+import { createLocalVue, mount } from '@vue/test-utils';
+import $ from 'jquery';
+import Api from '~/api';
+import ApproversSelect from 'ee/approvals/components/approvers_select.vue';
+import { TYPE_USER, TYPE_GROUP } from 'ee/approvals/constants';
+import { TEST_HOST } from 'spec/test_constants';
+
+const DEBOUNCE_TIME = 250;
+const TEST_PROJECT_ID = '17';
+const TEST_GROUP_AVATAR = `${TEST_HOST}/group-avatar.png`;
+const TEST_USER_AVATAR = `${TEST_HOST}/user-avatar.png`;
+const TEST_GROUPS = [
+  { id: 1, full_name: 'GitLab Org', full_path: 'gitlab/org', avatar_url: null },
+  {
+    id: 2,
+    full_name: 'Lorem Ipsum',
+    full_path: 'lorem-ipsum',
+    avatar_url: TEST_GROUP_AVATAR,
+  },
+];
+const TEST_USERS = [
+  { id: 1, name: 'Dolar', username: 'dolar', avatar_url: TEST_USER_AVATAR },
+  { id: 3, name: 'Sit', username: 'sit', avatar_url: TEST_USER_AVATAR },
+];
+
+const localVue = createLocalVue();
+
+const waitForEvent = ($input, event) => new Promise(resolve => $input.one(event, resolve));
+const parseAvatar = element => (element.classList.contains('identicon') ? null : element.src);
+const select2Container = () => document.querySelector('.select2-container');
+const select2DropdownOptions = () => document.querySelectorAll('#select2-drop .user-result');
+const select2DropdownItems = () =>
+  Array.prototype.map.call(select2DropdownOptions(), element => {
+    const isGroup = element.classList.contains('group-result');
+    const avatar = parseAvatar(element.querySelector('.avatar'));
+
+    return isGroup
+      ? {
+          avatar_url: avatar,
+          full_name: element.querySelector('.group-name').textContent,
+          full_path: element.querySelector('.group-path').textContent,
+        }
+      : {
+          avatar_url: avatar,
+          name: element.querySelector('.user-name').textContent,
+          username: element.querySelector('.user-username').textContent,
+        };
+  });
+
+describe('Approvals ApproversSelect', () => {
+  let wrapper;
+  let $input;
+
+  const factory = (options = {}) => {
+    const propsData = {
+      projectId: TEST_PROJECT_ID,
+      ...options.propsData,
+    };
+
+    wrapper = mount(localVue.extend(ApproversSelect), {
+      ...options,
+      propsData,
+      localVue,
+      attachToDocument: true,
+    });
+
+    $input = $(wrapper.vm.$refs.input);
+  };
+  const search = (term = '') => {
+    $input.select2('search', term);
+    jasmine.clock().tick(DEBOUNCE_TIME);
+  };
+
+  beforeEach(() => {
+    jasmine.clock().install();
+    spyOn(Api, 'groups').and.returnValue(Promise.resolve(TEST_GROUPS));
+    spyOn(Api, 'approverUsers').and.returnValue(Promise.resolve(TEST_USERS));
+  });
+
+  afterEach(() => {
+    jasmine.clock().uninstall();
+    wrapper.destroy();
+  });
+
+  it('renders select2 input', () => {
+    expect(select2Container()).toBe(null);
+
+    factory();
+
+    expect(select2Container()).not.toBe(null);
+  });
+
+  it('queries and displays groups and users', done => {
+    factory();
+
+    const expected = TEST_GROUPS.concat(TEST_USERS)
+      .map(({ id, ...obj }) => obj)
+      .map(({ username, ...obj }) => (!username ? obj : { ...obj, username: `@${username}` }));
+
+    waitForEvent($input, 'select2-loaded')
+      .then(() => {
+        const items = select2DropdownItems();
+
+        expect(items).toEqual(expected);
+      })
+      .then(done)
+      .catch(done.fail);
+
+    search();
+  });
+
+  it('searches with text and skips given ids', done => {
+    factory();
+
+    const term = 'lorem';
+
+    waitForEvent($input, 'select2-loaded')
+      .then(() => {
+        expect(Api.groups).toHaveBeenCalledWith(term, { skip_groups: [] });
+        expect(Api.approverUsers).toHaveBeenCalledWith(term, {
+          skip_users: [],
+          project_id: TEST_PROJECT_ID,
+        });
+      })
+      .then(done)
+      .catch(done.fail);
+
+    search(term);
+  });
+
+  it('searches and skips given groups and users', done => {
+    const skipGroupIds = [7, 8];
+    const skipUserIds = [9, 10];
+
+    factory({
+      propsData: {
+        skipGroupIds,
+        skipUserIds,
+      },
+    });
+
+    waitForEvent($input, 'select2-loaded')
+      .then(() => {
+        expect(Api.groups).toHaveBeenCalledWith('', { skip_groups: skipGroupIds });
+        expect(Api.approverUsers).toHaveBeenCalledWith('', {
+          skip_users: skipUserIds,
+          project_id: TEST_PROJECT_ID,
+        });
+      })
+      .then(done)
+      .catch(done.fail);
+
+    search();
+  });
+
+  it('emits input when data changes', done => {
+    factory();
+
+    const expectedFinal = [
+      { ...TEST_USERS[0], type: TYPE_USER },
+      { ...TEST_GROUPS[0], type: TYPE_GROUP },
+    ];
+    const expected = expectedFinal.map((x, idx) => ({
+      name: 'input',
+      args: [expectedFinal.slice(0, idx + 1)],
+    }));
+
+    waitForEvent($input, 'select2-loaded')
+      .then(() => {
+        const options = select2DropdownOptions();
+        $(options[TEST_GROUPS.length]).trigger('mouseup');
+        $(options[0]).trigger('mouseup');
+      })
+      .then(done)
+      .catch(done.fail);
+
+    waitForEvent($input, 'change')
+      .then(() => {
+        expect(wrapper.emittedByOrder()).toEqual(expected);
+      })
+      .then(done)
+      .catch(done.fail);
+
+    search();
+  });
+});

ee/spec/javascripts/approvals/components/modal_rule_create_spec.js

+import { shallowMount, createLocalVue } from '@vue/test-utils';
+import Vuex from 'vuex';
+import GlModalVuex from '~/vue_shared/components/gl_modal_vuex.vue';
+import RuleForm from 'ee/approvals/components/rule_form.vue';
+import ModalRuleCreate from 'ee/approvals/components/modal_rule_create.vue';
+
+const TEST_MODAL_ID = 'test-modal-create-id';
+const TEST_RULE = { id: 7 };
+const MODAL_MODULE = 'createModal';
+
+const localVue = createLocalVue();
+localVue.use(Vuex);
+
+describe('Approvals ModalRuleCreate', () => {
+  let createModalState;
+  let wrapper;
+
+  const factory = (options = {}) => {
+    const store = new Vuex.Store({
+      modules: {
+        [MODAL_MODULE]: {
+          namespaced: true,
+          state: createModalState,
+        },
+      },
+    });
+
+    const propsData = {
+      modalId: TEST_MODAL_ID,
+      ...options.propsData,
+    };
+
+    wrapper = shallowMount(localVue.extend(ModalRuleCreate), {
+      ...options,
+      localVue,
+      store,
+      propsData,
+    });
+  };
+
+  beforeEach(() => {
+    createModalState = {};
+  });
+
+  afterEach(() => {
+    wrapper.destroy();
+  });
+
+  describe('without data', () => {
+    beforeEach(() => {
+      createModalState.data = null;
+    });
+
+    it('renders modal', () => {
+      factory();
+
+      const modal = wrapper.find(GlModalVuex);
+
+      expect(modal.exists()).toBe(true);
+
+      expect(modal.props('modalModule')).toEqual(MODAL_MODULE);
+      expect(modal.props('modalId')).toEqual(TEST_MODAL_ID);
+      expect(modal.attributes('title')).toEqual('Add approvers');
+      expect(modal.attributes('ok-title')).toEqual('Add approvers');
+    });
+
+    it('renders form', () => {
+      factory();
+
+      const modal = wrapper.find(GlModalVuex);
+      const form = modal.find(RuleForm);
+
+      expect(form.exists()).toBe(true);
+      expect(form.props('initRule')).toEqual(null);
+    });
+
+    it('when modal emits ok, submits form', () => {
+      factory();
+
+      const form = wrapper.find(RuleForm);
+      form.vm.submit = jasmine.createSpy('submit');
+
+      const modal = wrapper.find(GlModalVuex);
+      modal.vm.$emit('ok', new Event('ok'));
+
+      expect(form.vm.submit).toHaveBeenCalled();
+    });
+  });
+
+  describe('with data', () => {
+    beforeEach(() => {
+      createModalState.data = TEST_RULE;
+    });
+
+    it('renders modal', () => {
+      factory();
+
+      const modal = wrapper.find(GlModalVuex);
+
+      expect(modal.exists()).toBe(true);
+
+      expect(modal.attributes('title')).toEqual('Update approvers');
+      expect(modal.attributes('ok-title')).toEqual('Update approvers');
+    });
+
+    it('renders form', () => {
+      factory();
+
+      const modal = wrapper.find(GlModalVuex);
+      const form = modal.find(RuleForm);
+
+      expect(form.exists()).toBe(true);
+      expect(form.props('initRule')).toEqual(TEST_RULE);
+    });
+  });
+});

ee/spec/javascripts/approvals/components/modal_rule_remove_spec.js

+import { shallowMount, createLocalVue } from '@vue/test-utils';
+import Vuex from 'vuex';
+import ModalRuleRemove from 'ee/approvals/components/modal_rule_remove.vue';
+import GlModalVuex from '~/vue_shared/components/gl_modal_vuex.vue';
+
+const MODAL_MODULE = 'deleteModal';
+const TEST_MODAL_ID = 'test-delete-modal-id';
+const TEST_RULE = {
+  id: 7,
+  name: 'Lorem',
+  approvers: Array(5)
+    .fill(1)
+    .map((x, id) => ({ id })),
+};
+
+const localVue = createLocalVue();
+localVue.use(Vuex);
+
+describe('Approvals ModalRuleRemove', () => {
+  let wrapper;
+  let actions;
+  let deleteModalState;
+
+  const factory = (options = {}) => {
+    const store = new Vuex.Store({
+      actions,
+      modules: {
+        [MODAL_MODULE]: {
+          namespaced: true,
+          state: deleteModalState,
+        },
+      },
+    });
+
+    const propsData = {
+      modalId: TEST_MODAL_ID,
+      ...options.propsData,
+    };
+
+    wrapper = shallowMount(localVue.extend(ModalRuleRemove), {
+      ...options,
+      localVue,
+      store,
+      propsData,
+    });
+  };
+
+  beforeEach(() => {
+    deleteModalState = {
+      data: TEST_RULE,
+    };
+    actions = {
+      deleteRule: jasmine.createSpy('deleteRule'),
+    };
+  });
+
+  it('renders modal', () => {
+    factory();
+
+    const modal = wrapper.find(GlModalVuex);
+
+    expect(modal.exists()).toBe(true);
+    expect(modal.props()).toEqual(
+      jasmine.objectContaining({
+        modalModule: MODAL_MODULE,
+        modalId: TEST_MODAL_ID,
+      }),
+    );
+  });
+
+  it('shows message', () => {
+    factory();
+
+    const modal = wrapper.find(GlModalVuex);
+
+    expect(modal.text()).toContain(TEST_RULE.name);
+    expect(modal.text()).toContain(`${TEST_RULE.approvers.length} members`);
+  });
+
+  it('shows singular message', () => {
+    deleteModalState.data = {
+      ...TEST_RULE,
+      approvers: [{ id: 1 }],
+    };
+    factory();
+
+    const modal = wrapper.find(GlModalVuex);
+
+    expect(modal.text()).toContain('1 member');
+  });
+
+  it('deletes rule when modal is submitted', () => {
+    factory();
+
+    expect(actions.deleteRule).not.toHaveBeenCalled();
+
+    const modal = wrapper.find(GlModalVuex);
+    modal.vm.$emit('ok', new Event('submit'));
+
+    expect(actions.deleteRule).toHaveBeenCalledWith(jasmine.anything(), TEST_RULE.id, undefined);
+  });
+});

ee/spec/javascripts/approvals/components/mr_edit/app_spec.js

+import { mount, createLocalVue } from '@vue/test-utils';
+import Vuex from 'vuex';
+import { createStoreOptions } from 'ee/approvals/stores';
+import MREditModule from 'ee/approvals/stores/modules/mr_edit';
+import MREditApp from 'ee/approvals/components/mr_edit/app.vue';
+import MRFallbackRules from 'ee/approvals/components/mr_edit/mr_fallback_rules.vue';
+import MRRules from 'ee/approvals/components/mr_edit/mr_rules.vue';
+import MRRulesHiddenInputs from 'ee/approvals/components/mr_edit/mr_rules_hidden_inputs.vue';
+
+const localVue = createLocalVue();
+localVue.use(Vuex);
+
+describe('EE Approvlas MREditApp', () => {
+  let wrapper;
+  let store;
+
+  const factory = () => {
+    wrapper = mount(localVue.extend(MREditApp), {
+      localVue,
+      store: new Vuex.Store(store),
+      sync: false,
+    });
+  };
+
+  beforeEach(() => {
+    store = createStoreOptions(MREditModule());
+    store.modules.approvals.state.hasLoaded = true;
+  });
+
+  afterEach(() => {
+    wrapper.destroy();
+  });
+
+  describe('with empty rules', () => {
+    beforeEach(() => {
+      store.modules.approvals.state.rules = [];
+      factory();
+    });
+
+    it('renders MR fallback rules', () => {
+      expect(wrapper.find(MRFallbackRules).exists()).toBe(true);
+    });
+
+    it('does not render MR rules', () => {
+      expect(wrapper.find(MRRules).exists()).toBe(false);
+    });
+
+    it('renders hidden inputs', () => {
+      expect(wrapper.find(MRRulesHiddenInputs).exists()).toBe(true);
+    });
+  });
+
+  describe('with rules', () => {
+    beforeEach(() => {
+      store.modules.approvals.state.rules = [{ id: 7, approvers: [] }];
+      factory();
+    });
+
+    it('does not render MR fallback rules', () => {
+      expect(wrapper.find(MRFallbackRules).exists()).toBe(false);
+    });
+
+    it('renders MR rules', () => {
+      expect(wrapper.find(MRRules).exists()).toBe(true);
+    });
+
+    it('renders hidden inputs', () => {
+      expect(wrapper.find(MRRulesHiddenInputs).exists()).toBe(true);
+    });
+  });
+});

ee/spec/javascripts/approvals/components/mr_edit/mr_fallback_rules_spec.js

+import { mount, createLocalVue } from '@vue/test-utils';
+import Vuex from 'vuex';
+import { createStoreOptions } from 'ee/approvals/stores';
+import MREditModule from 'ee/approvals/stores/modules/mr_edit';
+import MRFallbackRules from 'ee/approvals/components/mr_edit/mr_fallback_rules.vue';
+
+const localVue = createLocalVue();
+localVue.use(Vuex);
+
+const TEST_APPROVALS_REQUIRED = 3;
+const TEST_MIN_APPROVALS_REQUIRED = 2;
+
+describe('EE Approvals MRFallbackRules', () => {
+  let wrapper;
+  let store;
+
+  const factory = () => {
+    wrapper = mount(localVue.extend(MRFallbackRules), {
+      localVue,
+      store: new Vuex.Store(store),
+      sync: false,
+    });
+  };
+
+  beforeEach(() => {
+    store = createStoreOptions(MREditModule());
+    store.modules.approvals.state = {
+      hasLoaded: true,
+      rules: [],
+      minFallbackApprovalsRequired: TEST_MIN_APPROVALS_REQUIRED,
+      fallbackApprovalsRequired: TEST_APPROVALS_REQUIRED,
+    };
+    store.modules.approvals.actions.putFallbackRule = jasmine.createSpy('putFallbackRule');
+  });
+
+  afterEach(() => {
+    wrapper.destroy();
+  });
+
+  const findInput = () => wrapper.find('input');
+
+  describe('if can not edit', () => {
+    beforeEach(() => {
+      store.state.settings.canEdit = false;
+      factory();
+    });
+
+    it('input is disabled', () => {
+      expect(findInput().attributes('disabled')).toBe('disabled');
+    });
+
+    it('input has value', () => {
+      expect(Number(findInput().element.value)).toBe(TEST_APPROVALS_REQUIRED);
+    });
+  });
+
+  describe('if can edit', () => {
+    beforeEach(() => {
+      store.state.settings.canEdit = true;
+      factory();
+    });
+
+    it('input is not disabled', () => {
+      expect(findInput().attributes('disabled')).toBe(undefined);
+    });
+
+    it('input has value', () => {
+      expect(Number(findInput().element.value)).toBe(TEST_APPROVALS_REQUIRED);
+    });
+
+    it('input has min value', () => {
+      expect(Number(findInput().attributes('min'))).toBe(TEST_MIN_APPROVALS_REQUIRED);
+    });
+
+    it('input dispatches putFallbackRule on change', () => {
+      const action = store.modules.approvals.actions.putFallbackRule;
+      const nextValue = TEST_APPROVALS_REQUIRED + 1;
+
+      expect(action).not.toHaveBeenCalled();
+
+      findInput().setValue(nextValue);
+
+      expect(action).toHaveBeenCalledWith(
+        jasmine.anything(),
+        {
+          approvalsRequired: nextValue,
+        },
+        undefined,
+      );
+    });
+  });
+});

ee/spec/javascripts/approvals/components/mr_edit/mr_rules_hidden_inputs_spec.js

+import { shallowMount, createLocalVue } from '@vue/test-utils';
+import Vuex from 'vuex';
+import { createStoreOptions } from 'ee/approvals/stores';
+import MREditModule from 'ee/approvals/stores/modules/mr_edit';
+import MRRulesHiddenInputs from 'ee/approvals/components/mr_edit/mr_rules_hidden_inputs.vue';
+import { createMRRule } from '../../mocks';
+
+const localVue = createLocalVue();
+localVue.use(Vuex);
+
+const {
+  INPUT_ID,
+  INPUT_SOURCE_ID,
+  INPUT_NAME,
+  INPUT_APPROVALS_REQUIRED,
+  INPUT_USER_IDS,
+  INPUT_GROUP_IDS,
+  INPUT_DELETE,
+  INPUT_FALLBACK_APPROVALS_REQUIRED,
+} = MRRulesHiddenInputs;
+const TEST_USERS = [{ id: 1 }, { id: 10 }];
+const TEST_GROUPS = [{ id: 2 }, { id: 4 }];
+const TEST_FALLBACK_APPROVALS_REQUIRED = 3;
+
+describe('EE Approvlas MRRulesHiddenInputs', () => {
+  let wrapper;
+  let store;
+
+  const factory = () => {
+    wrapper = shallowMount(localVue.extend(MRRulesHiddenInputs), {
+      localVue,
+      store: new Vuex.Store(store),
+      sync: false,
+    });
+  };
+
+  beforeEach(() => {
+    store = createStoreOptions(MREditModule());
+    store.modules.approvals.state = {
+      rules: [],
+      rulesToDelete: [],
+      fallbackApprovalsRequired: TEST_FALLBACK_APPROVALS_REQUIRED,
+    };
+  });
+
+  afterEach(() => {
+    wrapper.destroy();
+    wrapper = null;
+  });
+
+  const findHiddenInputs = () =>
+    wrapper.findAll('input[type=hidden]').wrappers.map(x => ({
+      name: x.attributes('name'),
+      value: x.element.value,
+    }));
+
+  describe('cannot edit', () => {
+    beforeEach(() => {
+      store.state.settings = { canEdit: false };
+    });
+
+    it('is empty', () => {
+      factory();
+
+      expect(wrapper.html()).toBeUndefined();
+    });
+  });
+
+  describe('can edit', () => {
+    it('is not empty', () => {
+      factory();
+
+      expect(wrapper.html()).not.toBeUndefined();
+    });
+
+    describe('with no rules', () => {
+      it('renders fallback rules', () => {
+        factory();
+
+        expect(findHiddenInputs()).toEqual([
+          {
+            name: INPUT_FALLBACK_APPROVALS_REQUIRED,
+            value: TEST_FALLBACK_APPROVALS_REQUIRED.toString(),
+          },
+        ]);
+      });
+    });
+
+    describe('with rules to delete', () => {
+      beforeEach(() => {
+        store.modules.approvals.state.rulesToDelete = [4, 7];
+      });
+
+      it('renders delete inputs', () => {
+        factory();
+
+        expect(findHiddenInputs()).toEqual(
+          jasmine.arrayContaining([
+            { name: INPUT_ID, value: '4' },
+            { name: INPUT_DELETE, value: '1' },
+            { name: INPUT_ID, value: '7' },
+            { name: INPUT_DELETE, value: '1' },
+          ]),
+        );
+      });
+    });
+
+    describe('with rules', () => {
+      let rule;
+
+      beforeEach(() => {
+        rule = {
+          ...createMRRule(),
+          users: TEST_USERS,
+          groups: TEST_GROUPS,
+        };
+        store.modules.approvals.state.rules = [rule];
+      });
+
+      it('renders hidden fields for each row', () => {
+        factory();
+
+        expect(findHiddenInputs()).toEqual([
+          { name: INPUT_ID, value: rule.id.toString() },
+          { name: INPUT_APPROVALS_REQUIRED, value: rule.approvalsRequired.toString() },
+          { name: INPUT_NAME, value: rule.name },
+          ...TEST_USERS.map(({ id }) => ({ name: INPUT_USER_IDS, value: id.toString() })),
+          ...TEST_GROUPS.map(({ id }) => ({ name: INPUT_GROUP_IDS, value: id.toString() })),
+        ]);
+      });
+
+      describe('with empty users', () => {
+        beforeEach(() => {
+          rule.users = [];
+        });
+
+        it('renders empty users input', () => {
+          factory();
+
+          expect(findHiddenInputs().filter(x => x.name === INPUT_USER_IDS)).toEqual([
+            { name: INPUT_USER_IDS, value: '' },
+          ]);
+        });
+      });
+
+      describe('with empty groups', () => {
+        beforeEach(() => {
+          rule.groups = [];
+        });
+
+        it('renders empty groups input', () => {
+          factory();
+
+          expect(findHiddenInputs().filter(x => x.name === INPUT_GROUP_IDS)).toEqual([
+            { name: INPUT_GROUP_IDS, value: '' },
+          ]);
+        });
+      });
+
+      describe('with new rule', () => {
+        beforeEach(() => {
+          rule.isNew = true;
+        });
+
+        it('does not render id input', () => {
+          factory();
+
+          expect(findHiddenInputs().map(x => x.name)).not.toContain(INPUT_ID);
+        });
+
+        describe('with source', () => {
+          beforeEach(() => {
+            rule.hasSource = true;
+            rule.sourceId = 22;
+          });
+
+          it('renders source id input', () => {
+            factory();
+
+            expect(findHiddenInputs()).toContain({
+              name: INPUT_SOURCE_ID,
+              value: rule.sourceId.toString(),
+            });
+          });
+        });
+      });
+    });
+  });
+});

ee/spec/javascripts/approvals/components/mr_edit/mr_rules_spec.js

+import { mount, createLocalVue } from '@vue/test-utils';
+import Vuex from 'vuex';
+import { createStoreOptions } from 'ee/approvals/stores';
+import MREditModule from 'ee/approvals/stores/modules/mr_edit';
+import MRRules from 'ee/approvals/components/mr_edit/mr_rules.vue';
+import Rules from 'ee/approvals/components/rules.vue';
+import RuleControls from 'ee/approvals/components/rule_controls.vue';
+import UserAvatarList from '~/vue_shared/components/user_avatar/user_avatar_list.vue';
+import { createMRRule, createMRRuleWithSource } from '../../mocks';
+
+const { HEADERS } = Rules;
+
+const localVue = createLocalVue();
+localVue.use(Vuex);
+
+describe('EE Approvals MRRules', () => {
+  let wrapper;
+  let store;
+
+  const factory = () => {
+    wrapper = mount(localVue.extend(MRRules), {
+      localVue,
+      store: new Vuex.Store(store),
+      sync: false,
+    });
+  };
+
+  const findHeaders = () => wrapper.findAll('thead th').wrappers.map(x => x.text());
+  const findRuleName = () => wrapper.find('td.js-name');
+  const findRuleMembers = () =>
+    wrapper
+      .find('td.js-members')
+      .find(UserAvatarList)
+      .props('items');
+  const findRuleApprovalsRequired = () => wrapper.find('td.js-approvals-required input');
+  const findRuleControls = () => wrapper.find('td.js-controls').find(RuleControls);
+
+  beforeEach(() => {
+    store = createStoreOptions(MREditModule());
+    store.modules.approvals.state = {
+      hasLoaded: true,
+      rules: [],
+    };
+    store.modules.approvals.actions.putRule = jasmine.createSpy('putRule');
+  });
+
+  afterEach(() => {
+    wrapper.destroy();
+    wrapper = null;
+  });
+
+  describe('when allow multiple rules', () => {
+    beforeEach(() => {
+      store.state.settings.allowMultiRule = true;
+    });
+
+    it('renders headers', () => {
+      factory();
+
+      expect(findHeaders()).toEqual([HEADERS.name, HEADERS.members, HEADERS.approvalsRequired, '']);
+    });
+
+    describe('with sourced MR rule', () => {
+      const expected = createMRRuleWithSource();
+
+      beforeEach(() => {
+        store.modules.approvals.state.rules = [createMRRuleWithSource()];
+
+        factory();
+      });
+
+      it('shows name', () => {
+        expect(findRuleName().text()).toEqual(expected.name);
+      });
+
+      it('shows members', () => {
+        expect(findRuleMembers()).toEqual(expected.approvers);
+      });
+
+      it('shows approvals required input', () => {
+        const approvalsRequired = findRuleApprovalsRequired();
+
+        expect(Number(approvalsRequired.element.value)).toEqual(expected.approvalsRequired);
+        expect(Number(approvalsRequired.attributes('min'))).toEqual(expected.minApprovalsRequired);
+        expect(approvalsRequired.attributes('disabled')).toBeUndefined();
+      });
+
+      it('does not show controls', () => {
+        const controls = findRuleControls();
+
+        expect(controls.exists()).toBe(false);
+      });
+
+      it('dispatches putRule on change of approvals required', () => {
+        const action = store.modules.approvals.actions.putRule;
+        const approvalsRequired = findRuleApprovalsRequired();
+        const newValue = expected.approvalsRequired + 1;
+
+        approvalsRequired.setValue(newValue);
+
+        expect(action).toHaveBeenCalledWith(
+          jasmine.anything(),
+          { id: expected.id, approvalsRequired: newValue },
+          undefined,
+        );
+      });
+    });
+
+    describe('with custom MR rule', () => {
+      const expected = createMRRule();
+
+      beforeEach(() => {
+        store.modules.approvals.state.rules = [createMRRule()];
+        factory();
+      });
+
+      it('shows controls', () => {
+        const controls = findRuleControls();
+
+        expect(controls.exists()).toBe(true);
+        expect(controls.props('rule')).toEqual(expected);
+      });
+
+      describe('with settings cannot edit', () => {
+        beforeEach(() => {
+          store.state.settings.canEdit = false;
+          factory();
+        });
+
+        it('hides controls', () => {
+          const controls = findRuleControls();
+
+          expect(controls.exists()).toBe(false);
+        });
+
+        it('disables input', () => {
+          const approvalsRequired = findRuleApprovalsRequired();
+
+          expect(approvalsRequired.attributes('disabled')).toBe('disabled');
+        });
+      });
+    });
+  });
+
+  describe('when allow single rule', () => {
+    beforeEach(() => {
+      store.state.settings.allowMultiRule = false;
+    });
+
+    it('does not show name header', () => {
+      factory();
+
+      expect(findHeaders()).not.toContain(HEADERS.name);
+    });
+
+    describe('with source rule', () => {
+      beforeEach(() => {
+        store.modules.approvals.state.rules = [createMRRuleWithSource()];
+        factory();
+      });
+
+      it('does not show name', () => {
+        expect(findRuleName().exists()).toBe(false);
+      });
+
+      it('shows controls', () => {
+        expect(findRuleControls().exists()).toBe(true);
+      });
+    });
+  });
+});

ee/spec/javascripts/approvals/components/project_settings/project_rules_spec.js

+import Vuex from 'vuex';
+import { mount, createLocalVue } from '@vue/test-utils';
+import UserAvatarList from '~/vue_shared/components/user_avatar/user_avatar_list.vue';
+import { createStoreOptions } from 'ee/approvals/stores';
+import projectSettingsModule from 'ee/approvals/stores/modules/project_settings';
+import ProjectRules from 'ee/approvals/components/project_settings/project_rules.vue';
+import RuleControls from 'ee/approvals/components/rule_controls.vue';
+import { createProjectRules } from '../../mocks';
+
+const TEST_RULES = createProjectRules();
+
+const localVue = createLocalVue();
+localVue.use(Vuex);
+
+const findCell = (tr, name) => tr.find(`td.js-${name}`);
+
+const getRowData = tr => {
+  const summary = findCell(tr, 'summary');
+  const name = findCell(tr, 'name');
+  const members = findCell(tr, 'members');
+  const controls = findCell(tr, 'controls');
+  const approvalsRequired = findCell(tr, 'approvals-required');
+
+  return {
+    name: name.text(),
+    summary: summary.text(),
+    approvers: members.find(UserAvatarList).props('items'),
+    approvalsRequired: Number(approvalsRequired.text()),
+    ruleControl: controls.find(RuleControls).props('rule'),
+  };
+};
+
+describe('Approvals ProjectRules', () => {
+  let wrapper;
+  let store;
+
+  const factory = (props = {}) => {
+    wrapper = mount(localVue.extend(ProjectRules), {
+      propsData: props,
+      sync: false,
+      store: new Vuex.Store(store),
+      localVue,
+    });
+  };
+
+  beforeEach(() => {
+    store = createStoreOptions(projectSettingsModule());
+    store.modules.approvals.state.rules = TEST_RULES;
+  });
+
+  afterEach(() => {
+    wrapper.destroy();
+  });
+
+  describe('when allow multiple rules', () => {
+    beforeEach(() => {
+      store.state.settings.allowMultiRule = true;
+    });
+
+    it('renders row for each rule', () => {
+      factory();
+
+      const rows = wrapper.findAll('tbody tr');
+      const data = rows.wrappers.map(getRowData);
+
+      expect(data).toEqual(
+        TEST_RULES.map(rule => ({
+          name: rule.name,
+          summary: jasmine.stringMatching(`${rule.approvalsRequired} approval.*from ${rule.name}`),
+          approvalsRequired: rule.approvalsRequired,
+          approvers: rule.approvers,
+          ruleControl: rule,
+        })),
+      );
+    });
+  });
+
+  describe('when only allow single rule', () => {
+    let rule;
+    let row;
+
+    beforeEach(() => {
+      [rule] = TEST_RULES;
+      store.modules.approvals.state.rules = [rule];
+
+      factory();
+
+      row = wrapper.find('tbody tr');
+    });
+
+    it('does not render name', () => {
+      expect(findCell(row, 'name').exists()).toBe(false);
+    });
+
+    it('renders single summary', () => {
+      expect(findCell(row, 'summary').text()).toEqual(
+        `${rule.approvalsRequired} approvals required from ${rule.approvers.length} members`,
+      );
+    });
+  });
+});

ee/spec/javascripts/approvals/components/rule_controls_spec.js

+import { createLocalVue, shallowMount } from '@vue/test-utils';
+import Vuex from 'vuex';
+import { GlButton } from '@gitlab/ui';
+import Icon from '~/vue_shared/components/icon.vue';
+import MREditModule from 'ee/approvals/stores/modules/mr_edit';
+import { createStoreOptions } from 'ee/approvals/stores';
+import RuleControls from 'ee/approvals/components/rule_controls.vue';
+
+const localVue = createLocalVue();
+localVue.use(Vuex);
+
+const TEST_RULE = { id: 10 };
+
+const findButtonLabel = button => {
+  const icon = button.find(Icon);
+  return icon.exists() ? icon.attributes('aria-label') : button.text();
+};
+const hasLabel = (button, label) => findButtonLabel(button) === label;
+
+describe('EE Approvals RuleControls', () => {
+  let wrapper;
+  let store;
+  let actions;
+
+  const factory = () => {
+    wrapper = shallowMount(localVue.extend(RuleControls), {
+      propsData: {
+        rule: TEST_RULE,
+      },
+      localVue,
+      store: new Vuex.Store(store),
+      sync: false,
+    });
+  };
+  const findButtons = () => wrapper.findAll(GlButton);
+  const findButton = label => findButtons().filter(button => hasLabel(button, label)).wrappers[0];
+  const findEditButton = () => findButton('Edit');
+  const findRemoveButton = () => findButton('Remove');
+
+  beforeEach(() => {
+    store = createStoreOptions(MREditModule());
+    ({ actions } = store.modules.approvals);
+    ['requestEditRule', 'requestDeleteRule'].forEach(actionName => spyOn(actions, actionName));
+  });
+
+  afterEach(() => {
+    wrapper.destroy();
+  });
+
+  describe('when allow multi rule', () => {
+    beforeEach(() => {
+      store.state.settings.allowMultiRule = true;
+    });
+
+    describe('edit button', () => {
+      let button;
+
+      beforeEach(() => {
+        factory();
+        button = findEditButton();
+      });
+
+      it('exists', () => {
+        expect(button.exists()).toBe(true);
+      });
+
+      it('when click, opens create modal', () => {
+        expect(store.modules.approvals.actions.requestEditRule).not.toHaveBeenCalled();
+
+        button.vm.$emit('click');
+
+        expect(store.modules.approvals.actions.requestEditRule).toHaveBeenCalledWith(
+          jasmine.anything(),
+          TEST_RULE,
+          undefined,
+        );
+      });
+    });
+
+    describe('remove button', () => {
+      let button;
+
+      beforeEach(() => {
+        factory();
+        button = findRemoveButton();
+      });
+
+      it('exists', () => {
+        expect(button.exists()).toBe(true);
+      });
+
+      it('when click, opens delete modal', () => {
+        expect(store.modules.approvals.actions.requestDeleteRule).not.toHaveBeenCalled();
+
+        button.vm.$emit('click');
+
+        expect(store.modules.approvals.actions.requestDeleteRule).toHaveBeenCalledWith(
+          jasmine.anything(),
+          TEST_RULE,
+          undefined,
+        );
+      });
+    });
+  });
+
+  describe('when allow only single rule', () => {
+    beforeEach(() => {
+      factory();
+    });
+
+    it('renders edit button', () => {
+      expect(findEditButton().exists()).toBe(true);
+    });
+
+    it('does not render remove button', () => {
+      expect(findRemoveButton()).toBe(undefined);
+    });
+  });
+});

ee/spec/javascripts/approvals/mocks.js

+export const createProjectRules = () => [
+  { id: 1, name: 'Lorem', approvalsRequired: 2, approvers: [{ id: 7 }, { id: 8 }] },
+  { id: 2, name: 'Ipsum', approvalsRequired: 0, approvers: [{ id: 9 }] },
+  { id: 3, name: 'Dolarsit', approvalsRequired: 3, approvers: [] },
+];
+
+export const createMRRule = () => ({
+  id: 7,
+  name: 'Amit',
+  approvers: [{ id: 1 }, { id: 2 }],
+  approvalsRequired: 2,
+  minApprovalsRequired: 0,
+});
+
+export const createMRRuleWithSource = () => ({
+  ...createMRRule(),
+  minApprovalsRequired: 1,
+  hasSource: true,
+  sourceId: 3,
+});

ee/spec/javascripts/approvals/approvals_spec.js → ee/spec/javascripts/approvals/setup_single_rule_approvals_spec.js

 import $ from 'jquery';
-import approvals from 'ee/approvals';
+import setup from 'ee/approvals/setup_single_rule_approvals';
 
-describe('Approvals', () => {
+describe('EE setup_single_rule_approvals', () => {
   preloadFixtures('merge_requests_ee/merge_request_edit.html.raw');
 
   let $approversEl;
@@ -11,7 +11,7 @@ describe('Approvals', () => {
     loadFixtures('merge_requests_ee/merge_request_edit.html.raw');
     $approversEl = $('ul.approver-list');
     $suggestionEl = $('.suggested-approvers');
-    approvals();
+    setup();
   });
 
   describe('add suggested approver', () => {
@@ -57,7 +57,7 @@ describe('Approvals', () => {
       spyOn(window, 'confirm').and.returnValue(true);
 
       $approversEl
-        .find('.unsaved-approvers.approver a.btn-remove')
+        .find('.unsaved-approvers.approver .btn-remove')
         .first()
         .click();
 
@@ -68,7 +68,7 @@ describe('Approvals', () => {
       spyOn(window, 'confirm').and.returnValue(false);
 
       $approversEl
-        .find('.unsaved-approvers.approver a.btn-remove')
+        .find('.unsaved-approvers.approver .btn-remove')
         .first()
         .click();
 
@@ -83,7 +83,7 @@ describe('Approvals', () => {
       expect($approversEl.find('li.approver-group').length).toEqual(1);
 
       $approversEl
-        .find('.unsaved-approvers.approver-group a.btn-remove')
+        .find('.unsaved-approvers.approver-group .btn-remove')
         .first()
         .click();
 
@@ -96,7 +96,7 @@ describe('Approvals', () => {
       expect($approversEl.find('li.approver-group').length).toEqual(1);
 
       $approversEl
-        .find('.unsaved-approvers.approver-group a.btn-remove')
+        .find('.unsaved-approvers.approver-group .btn-remove')
         .first()
         .click();
 

ee/spec/javascripts/approvals/stores/modules/base/getters_spec.js

+import * as getters from 'ee/approvals/stores/modules/base/getters';
+
+describe('EE store modules base getters', () => {
+  describe('isEmpty', () => {
+    it('when rules is falsey, is true', () => {
+      expect(getters.isEmpty({})).toBe(true);
+    });
+
+    it('when rules is empty, is true', () => {
+      expect(getters.isEmpty({ rules: [] })).toBe(true);
+    });
+
+    it('when rules has items, is false', () => {
+      expect(getters.isEmpty({ rules: [1] })).toBe(false);
+    });
+  });
+});

ee/spec/javascripts/approvals/stores/modules/base/mutations_spec.js

+import createState from 'ee/approvals/stores/state';
+import * as types from 'ee/approvals/stores/modules/base/mutation_types';
+import mutations from 'ee/approvals/stores/modules/base/mutations';
+
+describe('EE approvals base module mutations', () => {
+  let state;
+
+  beforeEach(() => {
+    state = createState();
+  });
+
+  describe(types.SET_LOADING, () => {
+    it('sets isLoading', () => {
+      state.isLoading = false;
+
+      mutations[types.SET_LOADING](state, true);
+
+      expect(state.isLoading).toBe(true);
+    });
+  });
+
+  describe(types.SET_APPROVAL_SETTINGS, () => {
+    it('sets rules', () => {
+      const settings = {
+        rules: [{ id: 1 }, { id: 2 }],
+        fallbackApprovalsRequired: 7,
+        minFallbackApprovalsRequired: 1,
+      };
+
+      state.hasLoaded = false;
+      state.rules = [];
+
+      mutations[types.SET_APPROVAL_SETTINGS](state, settings);
+
+      expect(state).toEqual(jasmine.objectContaining(settings));
+    });
+  });
+});

ee/spec/javascripts/approvals/stores/modules/project_settings/actions_spec.js

+import MockAdapter from 'axios-mock-adapter';
+import axios from '~/lib/utils/axios_utils';
+import testAction from 'spec/helpers/vuex_action_helper';
+import * as types from 'ee/approvals/stores/modules/base/mutation_types';
+import actionsModule, * as actions from 'ee/approvals/stores/modules/project_settings/actions';
+import { mapApprovalRuleRequest, mapApprovalSettingsResponse } from 'ee/approvals/mappers';
+
+const TEST_PROJECT_ID = 9;
+const TEST_RULE_ID = 7;
+const TEST_RULE_REQUEST = {
+  name: 'Lorem',
+  approvalsRequired: 1,
+  groups: [7],
+  users: [8, 9],
+};
+const TEST_RULE_RESPONSE = {
+  id: 7,
+  name: 'Ipsum',
+  approvals_required: 2,
+  approvers: [{ id: 7 }, { id: 8 }, { id: 9 }],
+  groups: [{ id: 4 }],
+  users: [{ id: 7 }, { id: 8 }],
+};
+const TEST_SETTINGS_PATH = 'projects/9/approval_settings';
+const TEST_RULES_PATH = 'projects/9/approval_settings/rules';
+
+describe('EE approvals project settings module actions', () => {
+  let state;
+  let flashSpy;
+  let mock;
+
+  beforeEach(() => {
+    state = {
+      settings: {
+        projectId: TEST_PROJECT_ID,
+        settingsPath: TEST_SETTINGS_PATH,
+        rulesPath: TEST_RULES_PATH,
+      },
+    };
+    flashSpy = spyOnDependency(actionsModule, 'createFlash');
+    mock = new MockAdapter(axios);
+  });
+
+  afterEach(() => {
+    mock.restore();
+  });
+
+  describe('requestRules', () => {
+    it('sets loading', done => {
+      testAction(
+        actions.requestRules,
+        null,
+        {},
+        [{ type: types.SET_LOADING, payload: true }],
+        [],
+        done,
+      );
+    });
+  });
+
+  describe('receiveRulesSuccess', () => {
+    it('sets rules', done => {
+      const settings = { rules: [{ id: 1 }] };
+
+      testAction(
+        actions.receiveRulesSuccess,
+        settings,
+        {},
+        [
+          { type: types.SET_APPROVAL_SETTINGS, payload: settings },
+          { type: types.SET_LOADING, payload: false },
+        ],
+        [],
+        done,
+      );
+    });
+  });
+
+  describe('receiveRulesError', () => {
+    it('creates a flash', () => {
+      expect(flashSpy).not.toHaveBeenCalled();
+
+      actions.receiveRulesError();
+
+      expect(flashSpy).toHaveBeenCalledTimes(1);
+      expect(flashSpy).toHaveBeenCalledWith(jasmine.stringMatching('error occurred'));
+    });
+  });
+
+  describe('fetchRules', () => {
+    it('dispatches request/receive', done => {
+      const data = { rules: [TEST_RULE_RESPONSE] };
+      mock.onGet(TEST_SETTINGS_PATH).replyOnce(200, data);
+
+      testAction(
+        actions.fetchRules,
+        null,
+        state,
+        [],
+        [
+          { type: 'requestRules' },
+          { type: 'receiveRulesSuccess', payload: mapApprovalSettingsResponse(data) },
+        ],
+        () => {
+          expect(mock.history.get.map(x => x.url)).toEqual([TEST_SETTINGS_PATH]);
+
+          done();
+        },
+      );
+    });
+
+    it('dispatches request/receive on error', done => {
+      mock.onGet(TEST_SETTINGS_PATH).replyOnce(500);
+
+      testAction(
+        actions.fetchRules,
+        null,
+        state,
+        [],
+        [{ type: 'requestRules' }, { type: 'receiveRulesError' }],
+        done,
+      );
+    });
+  });
+
+  describe('postRuleSuccess', () => {
+    it('closes modal and fetches', done => {
+      testAction(
+        actions.postRuleSuccess,
+        null,
+        {},
+        [],
+        [{ type: 'createModal/close' }, { type: 'fetchRules' }],
+        done,
+      );
+    });
+  });
+
+  describe('postRuleError', () => {
+    it('creates a flash', () => {
+      expect(flashSpy).not.toHaveBeenCalled();
+
+      actions.postRuleError();
+
+      expect(flashSpy.calls.allArgs()).toEqual([[jasmine.stringMatching('error occurred')]]);
+    });
+  });
+
+  describe('postRule', () => {
+    it('dispatches success on success', done => {
+      mock.onPost(TEST_RULES_PATH).replyOnce(200);
+
+      testAction(
+        actions.postRule,
+        TEST_RULE_REQUEST,
+        state,
+        [],
+        [{ type: 'postRuleSuccess' }],
+        () => {
+          expect(mock.history.post).toEqual([
+            jasmine.objectContaining({
+              url: TEST_RULES_PATH,
+              data: JSON.stringify(mapApprovalRuleRequest(TEST_RULE_REQUEST)),
+            }),
+          ]);
+
+          done();
+        },
+      );
+    });
+
+    it('dispatches error on error', done => {
+      mock.onPost(TEST_RULES_PATH).replyOnce(500);
+
+      testAction(actions.postRule, TEST_RULE_REQUEST, state, [], [{ type: 'postRuleError' }], done);
+    });
+  });
+
+  describe('putRule', () => {
+    it('dispatches success on success', done => {
+      mock.onPut(`${TEST_RULES_PATH}/${TEST_RULE_ID}`).replyOnce(200);
+
+      testAction(
+        actions.putRule,
+        { id: TEST_RULE_ID, ...TEST_RULE_REQUEST },
+        state,
+        [],
+        [{ type: 'postRuleSuccess' }],
+        () => {
+          expect(mock.history.put).toEqual([
+            jasmine.objectContaining({
+              url: `${TEST_RULES_PATH}/${TEST_RULE_ID}`,
+              data: JSON.stringify(mapApprovalRuleRequest(TEST_RULE_REQUEST)),
+            }),
+          ]);
+
+          done();
+        },
+      );
+    });
+
+    it('dispatches error on error', done => {
+      mock.onPut(`${TEST_RULES_PATH}/${TEST_RULE_ID}`).replyOnce(500);
+
+      testAction(
+        actions.putRule,
+        { id: TEST_RULE_ID, ...TEST_RULE_REQUEST },
+        state,
+        [],
+        [{ type: 'postRuleError' }],
+        done,
+      );
+    });
+  });
+
+  describe('deleteRuleSuccess', () => {
+    it('closes modal and fetches', done => {
+      testAction(
+        actions.deleteRuleSuccess,
+        null,
+        {},
+        [],
+        [{ type: 'deleteModal/close' }, { type: 'fetchRules' }],
+        done,
+      );
+    });
+  });
+
+  describe('deleteRuleError', () => {
+    it('creates a flash', () => {
+      expect(flashSpy).not.toHaveBeenCalled();
+
+      actions.deleteRuleError();
+
+      expect(flashSpy.calls.allArgs()).toEqual([[jasmine.stringMatching('error occurred')]]);
+    });
+  });
+
+  describe('deleteRule', () => {
+    it('dispatches success on success', done => {
+      mock.onDelete(`${TEST_RULES_PATH}/${TEST_RULE_ID}`).replyOnce(200);
+
+      testAction(
+        actions.deleteRule,
+        TEST_RULE_ID,
+        state,
+        [],
+        [{ type: 'deleteRuleSuccess' }],
+        () => {
+          expect(mock.history.delete).toEqual([
+            jasmine.objectContaining({
+              url: `${TEST_RULES_PATH}/${TEST_RULE_ID}`,
+            }),
+          ]);
+
+          done();
+        },
+      );
+    });
+
+    it('dispatches error on error', done => {
+      mock.onDelete(`${TEST_RULES_PATH}/${TEST_RULE_ID}`).replyOnce(500);
+
+      testAction(actions.deleteRule, TEST_RULE_ID, state, [], [{ type: 'deleteRuleError' }], done);
+    });
+  });
+});

ee/spec/javascripts/fixtures/merge_requests.rb

@@ -22,6 +22,8 @@ describe Projects::MergeRequestsController, '(JavaScript fixtures)', type: :cont
   end
 
   before do
+    stub_feature_flags(approval_rules: false)
+
     # Ensure some approver suggestions are displayed
     service = double(:service)
     expect(::Gitlab::AuthorityAnalyzer).to receive(:new).and_return(service)

ee/spec/javascripts/vue_mr_widget/components/approvals/multiple_rule/approved_icon_spec.js

+import { createLocalVue, shallowMount } from '@vue/test-utils';
+import Icon from '~/vue_shared/components/icon.vue';
+import ApprovedIcon from 'ee/vue_merge_request_widget/components/approvals/multiple_rule/approved_icon.vue';
+
+const localVue = createLocalVue();
+const EXPECTED_SIZE = 16;
+
+describe('EE MRWidget approved icon', () => {
+  let wrapper;
+
+  const createComponent = (props = {}) => {
+    wrapper = shallowMount(localVue.extend(ApprovedIcon), {
+      propsData: props,
+      localVue,
+      sync: false,
+    });
+  };
+
+  const findIcon = () => wrapper.find(Icon);
+  const findSquare = () => wrapper.find('.square');
+
+  afterEach(() => {
+    wrapper.destroy();
+    wrapper = null;
+  });
+
+  describe('when approved', () => {
+    beforeEach(() => {
+      createComponent({ isApproved: true });
+    });
+
+    it('renders icon', () => {
+      const icon = findIcon();
+
+      expect(icon.exists()).toBe(true);
+      expect(icon.props()).toEqual(
+        jasmine.objectContaining({
+          size: EXPECTED_SIZE,
+          name: 'mobile-issue-close',
+        }),
+      );
+    });
+
+    it('does not render square', () => {
+      expect(findSquare().exists()).toBe(false);
+    });
+  });
+
+  describe('when unapproved', () => {
+    beforeEach(() => {
+      createComponent({ isApproved: false });
+    });
+
+    it('does not render icon', () => {
+      expect(findIcon().exists()).toBe(false);
+    });
+
+    it('renders square', () => {
+      const square = findSquare();
+
+      expect(square.exists()).toBe(true);
+      expect(square.classes(`s${EXPECTED_SIZE}`)).toBe(true);
+    });
+  });
+});

ee/spec/javascripts/approvals/approvals_body_spec.js → ee/spec/javascripts/vue_mr_widget/components/approvals/single_rule/approvals_body_spec.js

 import Vue from 'vue';
-import ApprovalsBody from 'ee/vue_merge_request_widget/components/approvals/approvals_body.vue';
+import ApprovalsBody from 'ee/vue_merge_request_widget/components/approvals/single_rule/approvals_body.vue';
 
 describe('Approvals Body Component', () => {
   let vm;

ee/spec/javascripts/approvals/approvals_footer_spec.js → ee/spec/javascripts/vue_mr_widget/components/approvals/single_rule/approvals_footer_spec.js

 import Vue from 'vue';
-import ApprovalsFooter from 'ee/vue_merge_request_widget/components/approvals/approvals_footer.vue';
+import ApprovalsFooter from 'ee/vue_merge_request_widget/components/approvals/single_rule/approvals_footer.vue';
 import { TEST_HOST } from 'spec/test_constants';
 
 describe('Approvals Footer Component', () => {

ee/spec/javascripts/vue_mr_widget/ee_mr_widget_options_spec.js

@@ -39,6 +39,7 @@ describe('ee merge request widget options', () => {
   }
 
   beforeEach(() => {
+    gon.features = { approvalRules: false };
     delete mrWidgetOptions.extends.el; // Prevent component mounting
 
     Component = Vue.extend(mrWidgetOptions);
@@ -46,6 +47,7 @@ describe('ee merge request widget options', () => {
   });
 
   afterEach(() => {
+    gon.features = null;
     vm.$destroy();
     mock.restore();