Convert Issue sidebar labels to Vue

Issue sidebar labels was entirely in Haml. By converting it
to Vue, we can use gitlab-ui components

app/assets/javascripts/init_issuable_sidebar.js

@@ -4,8 +4,8 @@ import MilestoneSelect from './milestone_select';
 import LabelsSelect from './labels_select';
 import IssuableContext from './issuable_context';
 import Sidebar from './right_sidebar';
-
 import DueDateSelectors from './due_date_select';
+import { mountSidebarLabels } from '~/sidebar/mount_sidebar';
 
 export default () => {
   const sidebarOptions = JSON.parse(document.querySelector('.js-sidebar-options').innerHTML);
@@ -17,4 +17,6 @@ export default () => {
   new IssuableContext(sidebarOptions.currentUser);
   new DueDateSelectors();
   Sidebar.initialize();
+
+  mountSidebarLabels();
 };

app/assets/javascripts/sidebar/components/labels/sidebar_labels.vue

+<script>
+import $ from 'jquery';
+import { difference, union } from 'lodash';
+import { mapState, mapActions } from 'vuex';
+import flash from '~/flash';
+import axios from '~/lib/utils/axios_utils';
+import { __ } from '~/locale';
+import { DropdownVariant } from '~/vue_shared/components/sidebar/labels_select_vue/constants';
+import LabelsSelect from '~/vue_shared/components/sidebar/labels_select_vue/labels_select_root.vue';
+
+export default {
+  components: {
+    LabelsSelect,
+  },
+  variant: DropdownVariant.Sidebar,
+  inject: [
+    'allowLabelCreate',
+    'allowLabelEdit',
+    'allowScopedLabels',
+    'iid',
+    'initiallySelectedLabels',
+    'issuableType',
+    'labelsFetchPath',
+    'labelsManagePath',
+    'labelsUpdatePath',
+    'projectIssuesPath',
+    'projectPath',
+  ],
+  data: () => ({
+    labelsSelectInProgress: false,
+  }),
+  computed: {
+    ...mapState(['selectedLabels']),
+  },
+  mounted() {
+    this.setInitialState({
+      selectedLabels: this.initiallySelectedLabels,
+    });
+  },
+  methods: {
+    ...mapActions(['setInitialState', 'replaceSelectedLabels']),
+    handleDropdownClose() {
+      $(this.$el).trigger('hidden.gl.dropdown');
+    },
+    handleUpdateSelectedLabels(labels) {
+      const currentLabelIds = this.selectedLabels.map(label => label.id);
+      const userAddedLabelIds = labels.filter(label => label.set).map(label => label.id);
+      const userRemovedLabelIds = labels.filter(label => !label.set).map(label => label.id);
+
+      const issuableLabels = difference(
+        union(currentLabelIds, userAddedLabelIds),
+        userRemovedLabelIds,
+      );
+
+      this.labelsSelectInProgress = true;
+
+      axios({
+        data: {
+          [this.issuableType]: {
+            label_ids: issuableLabels,
+          },
+        },
+        method: 'put',
+        url: this.labelsUpdatePath,
+      })
+        .then(({ data }) => this.replaceSelectedLabels(data.labels))
+        .catch(() => flash(__('An error occurred while updating labels.')))
+        .finally(() => {
+          this.labelsSelectInProgress = false;
+        });
+    },
+  },
+};
+</script>
+
+<template>
+  <labels-select
+    class="block labels js-labels-block"
+    :allow-label-create="allowLabelCreate"
+    :allow-label-edit="allowLabelEdit"
+    :allow-multiselect="true"
+    :allow-scoped-labels="allowScopedLabels"
+    :footer-create-label-title="__('Create project label')"
+    :footer-manage-label-title="__('Manage project labels')"
+    :labels-create-title="__('Create project label')"
+    :labels-fetch-path="labelsFetchPath"
+    :labels-filter-base-path="projectIssuesPath"
+    :labels-manage-path="labelsManagePath"
+    :labels-select-in-progress="labelsSelectInProgress"
+    :selected-labels="selectedLabels"
+    :variant="$options.sidebar"
+    @onDropdownClose="handleDropdownClose"
+    @updateSelectedLabels="handleUpdateSelectedLabels"
+  >
+    {{ __('None') }}
+  </labels-select>
+</template>

app/assets/javascripts/sidebar/mount_sidebar.js

 import $ from 'jquery';
 import Vue from 'vue';
 import VueApollo from 'vue-apollo';
+import Vuex from 'vuex';
 import SidebarTimeTracking from './components/time_tracking/sidebar_time_tracking.vue';
 import SidebarAssignees from './components/assignees/sidebar_assignees.vue';
+import SidebarLabels from './components/labels/sidebar_labels.vue';
 import ConfidentialIssueSidebar from './components/confidential/confidential_issue_sidebar.vue';
 import SidebarMoveIssue from './lib/sidebar_move_issue';
 import IssuableLockForm from './components/lock/issuable_lock_form.vue';
@@ -12,11 +14,13 @@ import SidebarSeverity from './components/severity/sidebar_severity.vue';
 import Translate from '../vue_shared/translate';
 import createDefaultClient from '~/lib/graphql';
 import { store } from '~/notes/stores';
-import { isInIssuePage } from '~/lib/utils/common_utils';
+import { isInIssuePage, parseBoolean } from '~/lib/utils/common_utils';
 import mergeRequestStore from '~/mr_notes/stores';
+import labelsSelectModule from '~/vue_shared/components/sidebar/labels_select_vue/store';
 
 Vue.use(Translate);
 Vue.use(VueApollo);
+Vue.use(Vuex);
 
 function getSidebarOptions() {
   return JSON.parse(document.querySelector('.js-sidebar-options').innerHTML);
@@ -52,6 +56,29 @@ function mountAssigneesComponent(mediator) {
   });
 }
 
+export function mountSidebarLabels() {
+  const el = document.querySelector('.js-sidebar-labels');
+
+  if (!el) {
+    return false;
+  }
+
+  const labelsStore = new Vuex.Store(labelsSelectModule());
+
+  return new Vue({
+    el,
+    provide: {
+      ...el.dataset,
+      allowLabelCreate: parseBoolean(el.dataset.allowLabelCreate),
+      allowLabelEdit: parseBoolean(el.dataset.canEdit),
+      allowScopedLabels: parseBoolean(el.dataset.allowScopedLabels),
+      initiallySelectedLabels: JSON.parse(el.dataset.selectedLabels),
+    },
+    store: labelsStore,
+    render: createElement => createElement(SidebarLabels),
+  });
+}
+
 function mountConfidentialComponent(mediator) {
   const el = document.getElementById('js-confidential-entry-point');
 

app/assets/javascripts/vue_shared/components/sidebar/labels_select_vue/labels_select_root.vue

@@ -252,10 +252,10 @@ export default {
         :allow-label-edit="allowLabelEdit"
         :labels-select-in-progress="labelsSelectInProgress"
       />
-      <dropdown-value v-show="!showDropdownButton">
+      <dropdown-value>
         <slot></slot>
       </dropdown-value>
-      <dropdown-button v-show="dropdownButtonVisible" />
+      <dropdown-button v-show="dropdownButtonVisible" class="gl-mt-2" />
       <dropdown-contents
         v-if="dropdownButtonVisible && showDropdownContents"
         ref="dropdownContents"

app/assets/javascripts/vue_shared/components/sidebar/labels_select_vue/store/actions.js

@@ -54,5 +54,8 @@ export const createLabel = ({ state, dispatch }, label) => {
     });
 };
 
+export const replaceSelectedLabels = ({ commit }, selectedLabels) =>
+  commit(types.REPLACE_SELECTED_LABELS, selectedLabels);
+
 export const updateSelectedLabels = ({ commit }, labels) =>
   commit(types.UPDATE_SELECTED_LABELS, { labels });

app/assets/javascripts/vue_shared/components/sidebar/labels_select_vue/store/mutation_types.js

@@ -15,6 +15,7 @@ export const RECEIVE_CREATE_LABEL_FAILURE = 'RECEIVE_CREATE_LABEL_FAILURE';
 export const TOGGLE_DROPDOWN_BUTTON = 'TOGGLE_DROPDOWN_VISIBILITY';
 export const TOGGLE_DROPDOWN_CONTENTS = 'TOGGLE_DROPDOWN_CONTENTS';
 
+export const REPLACE_SELECTED_LABELS = 'REPLACE_SELECTED_LABELS';
 export const UPDATE_SELECTED_LABELS = 'UPDATE_SELECTED_LABELS';
 
 export const TOGGLE_DROPDOWN_CONTENTS_CREATE_VIEW = 'TOGGLE_DROPDOWN_CONTENTS_CREATE_VIEW';

app/assets/javascripts/vue_shared/components/sidebar/labels_select_vue/store/mutations.js

@@ -57,6 +57,10 @@ export default {
     state.labelCreateInProgress = false;
   },
 
+  [types.REPLACE_SELECTED_LABELS](state, selectedLabels = []) {
+    state.selectedLabels = selectedLabels;
+  },
+
   [types.UPDATE_SELECTED_LABELS](state, { labels }) {
     // Find the label to update from all the labels
     // and change `set` prop value to represent their current state.

app/assets/stylesheets/framework/sidebar.scss

@@ -145,6 +145,13 @@
   .value.dont-hide ~ .selectbox {
     padding-top: $gl-padding-8;
   }
+
+  // This is for sidebar components using gl-button for the Edit button to be consistent with the
+  // rest of the sidebar, and could be removed once the sidebar has been fully converted to use
+  // gitlab-ui components.
+  .title .gl-button {
+    color: $gl-text-color;
+  }
 }
 
 .pikaday-container {

app/controllers/projects/issues_controller.rb

@@ -45,6 +45,7 @@ class Projects::IssuesController < Projects::ApplicationController
     push_frontend_feature_flag(:tribute_autocomplete, @project)
     push_frontend_feature_flag(:vue_issuables_list, project)
     push_frontend_feature_flag(:design_management_todo_button, project, default_enabled: true)
+    push_frontend_feature_flag(:vue_sidebar_labels, @project)
   end
 
   before_action only: :show do

app/views/shared/issuable/_sidebar.html.haml

@@ -101,36 +101,50 @@
                     = dropdown_content do
                       .js-due-date-calendar
 
-        - selected_labels = issuable_sidebar[:labels]
-        .block.labels
-          .sidebar-collapsed-icon.js-sidebar-labels-tooltip{ title: issuable_labels_tooltip(selected_labels), data: { placement: "left", container: "body", boundary: 'viewport' } }
-            = sprite_icon('labels')
-            %span
-              = selected_labels.size
-          .title.hide-collapsed
-            = _('Labels')
-            = loading_icon(css_class: 'gl-vertical-align-text-bottom hidden block-loading')
-            - if can_edit_issuable
-              = link_to _('Edit'), '#', class: 'js-sidebar-dropdown-toggle edit-link float-right', data: { qa_selector: "edit_labels_link", track_label: "right_sidebar", track_property: "labels", track_event: "click_edit_button", track_value: "" }
-          .value.issuable-show-labels.dont-hide.hide-collapsed{ class: ("has-labels" if selected_labels.any?), data: { qa_selector: 'labels_block' } }
-            - if selected_labels.any?
-              - selected_labels.each do |label_hash|
-                = render_label(label_from_hash(label_hash).present(issuable_subject: nil), link: sidebar_label_filter_path(issuable_sidebar[:project_issuables_path], label_hash[:title]), dataset: { qa_selector: 'label', qa_label_name: label_hash[:title] })
-            - else
-              %span.no-value
-                = _('None')
-          .selectbox.hide-collapsed
-            - selected_labels.each do |label|
-              = hidden_field_tag "#{issuable_type}[label_names][]", label[:id], id: nil
-            .dropdown
-              %button.dropdown-menu-toggle.js-label-select.js-multiselect.js-label-sidebar-dropdown{ type: "button", data: sidebar_label_dropdown_data(issuable_type, issuable_sidebar) }
-                %span.dropdown-toggle-text{ class: ("is-default" if selected_labels.empty?) }
-                  = multi_label_name(selected_labels, "Labels")
-                = icon('chevron-down', 'aria-hidden': 'true')
-              .dropdown-menu.dropdown-select.dropdown-menu-paging.qa-dropdown-menu-labels.dropdown-menu-labels.dropdown-menu-selectable.dropdown-extended-height
-                = render partial: "shared/issuable/label_page_default"
-                - if issuable_sidebar.dig(:current_user, :can_admin_label)
-                  = render partial: "shared/issuable/label_page_create"
+
+        - if Feature.enabled?(:vue_sidebar_labels, @project)
+          .js-sidebar-labels{ data: { allow_label_create: issuable_sidebar.dig(:current_user, :can_admin_label).to_s,
+            allow_scoped_labels: issuable_sidebar[:scoped_labels_available].to_s,
+            can_edit: can_edit_issuable.to_s,
+            iid: issuable_sidebar[:iid],
+            issuable_type: issuable_type,
+            labels_fetch_path: issuable_sidebar[:project_labels_path],
+            labels_manage_path: project_labels_path(@project),
+            labels_update_path: issuable_sidebar[:issuable_json_path],
+            project_issues_path: issuable_sidebar[:project_issuables_path],
+            project_path: @project.full_path,
+            selected_labels: issuable_sidebar[:labels].to_json } }
+        - else
+          - selected_labels = issuable_sidebar[:labels]
+          .block.labels
+            .sidebar-collapsed-icon.js-sidebar-labels-tooltip{ title: issuable_labels_tooltip(selected_labels), data: { placement: "left", container: "body", boundary: 'viewport' } }
+              = sprite_icon('labels')
+              %span
+                = selected_labels.size
+            .title.hide-collapsed
+              = _('Labels')
+              = loading_icon(css_class: 'gl-vertical-align-text-bottom hidden block-loading')
+              - if can_edit_issuable
+                = link_to _('Edit'), '#', class: 'js-sidebar-dropdown-toggle edit-link float-right', data: { qa_selector: "edit_labels_link", track_label: "right_sidebar", track_property: "labels", track_event: "click_edit_button", track_value: "" }
+            .value.issuable-show-labels.dont-hide.hide-collapsed{ class: ("has-labels" if selected_labels.any?), data: { qa_selector: 'labels_block' } }
+              - if selected_labels.any?
+                - selected_labels.each do |label_hash|
+                  = render_label(label_from_hash(label_hash).present(issuable_subject: nil), link: sidebar_label_filter_path(issuable_sidebar[:project_issuables_path], label_hash[:title]), dataset: { qa_selector: 'label', qa_label_name: label_hash[:title] })
+              - else
+                %span.no-value
+                  = _('None')
+            .selectbox.hide-collapsed
+              - selected_labels.each do |label|
+                = hidden_field_tag "#{issuable_type}[label_names][]", label[:id], id: nil
+              .dropdown
+                %button.dropdown-menu-toggle.js-label-select.js-multiselect.js-label-sidebar-dropdown{ type: "button", data: sidebar_label_dropdown_data(issuable_type, issuable_sidebar) }
+                  %span.dropdown-toggle-text{ class: ("is-default" if selected_labels.empty?) }
+                    = multi_label_name(selected_labels, "Labels")
+                  = icon('chevron-down', 'aria-hidden': 'true')
+                .dropdown-menu.dropdown-select.dropdown-menu-paging.qa-dropdown-menu-labels.dropdown-menu-labels.dropdown-menu-selectable.dropdown-extended-height
+                  = render partial: "shared/issuable/label_page_default"
+                  - if issuable_sidebar.dig(:current_user, :can_admin_label)
+                    = render partial: "shared/issuable/label_page_create"
 
         = render_if_exists 'shared/issuable/sidebar_weight', issuable_sidebar: issuable_sidebar
 

locale/gitlab.pot

@@ -2951,6 +2951,9 @@ msgstr ""
 msgid "An error occurred while updating approvers"
 msgstr ""
 
+msgid "An error occurred while updating labels."
+msgstr ""
+
 msgid "An error occurred while updating the comment"
 msgstr ""
 

spec/features/issues/group_label_sidebar_spec.rb

@@ -3,7 +3,7 @@
 require 'spec_helper'
 
 RSpec.describe 'Group label on issue' do
-  it 'renders link to the project issues page' do
+  it 'renders link to the project issues page', :js do
     group = create(:group)
     project = create(:project, :public, namespace: group)
     feature = create(:group_label, group: group, title: 'feature')
@@ -14,6 +14,6 @@ RSpec.describe 'Group label on issue' do
 
     link = find('.issuable-show-labels a')
 
-    expect(link[:href]).to eq(label_link)
+    expect(CGI.unescape(link[:href])).to include(CGI.unescape(label_link))
   end
 end

spec/features/issues/issue_sidebar_spec.rb

@@ -168,7 +168,7 @@ RSpec.describe 'Issue Sidebar' do
 
       it 'escapes XSS when viewing issue labels' do
         page.within('.block.labels') do
-          find('.edit-link').click
+          click_on 'Edit'
 
           expect(page).to have_content '<script>alert("xss");</script>'
         end
@@ -179,7 +179,7 @@ RSpec.describe 'Issue Sidebar' do
       before do
         issue.update(labels: [label])
         page.within('.block.labels') do
-          find('.edit-link').click
+          click_on 'Edit'
         end
       end
 
@@ -286,7 +286,7 @@ RSpec.describe 'Issue Sidebar' do
     end
 
     it 'does not have a option to edit labels' do
-      expect(page).not_to have_selector('.block.labels .edit-link')
+      expect(page).not_to have_selector('.block.labels .js-sidebar-dropdown-toggle')
     end
 
     context 'interacting with collapsed sidebar', :js do

spec/features/issues/resource_label_events_spec.rb

@@ -35,12 +35,12 @@ RSpec.describe 'List issue resource label events', :js do
   context 'when user adds label to the issue' do
     def toggle_labels(labels)
       page.within '.labels' do
-        click_link 'Edit'
+        click_on 'Edit'
         wait_for_requests
 
         labels.each { |label| click_link label }
 
-        click_link 'Edit'
+        click_on 'Edit'
         wait_for_requests
       end
     end

spec/features/issues/user_edits_issue_spec.rb

@@ -95,11 +95,12 @@ RSpec.describe "Issues > User edits issue", :js do
     describe 'update labels' do
       it 'will not send ajax request when no data is changed' do
         page.within '.labels' do
-          click_link 'Edit'
+          click_on 'Edit'
 
-          find('.dropdown-menu-close', match: :first).click
+          find('.dropdown-title button').click
 
           expect(page).not_to have_selector('.block-loading')
+          expect(page).not_to have_selector('.gl-spinner')
         end
       end
     end

spec/features/labels_hierarchy_spec.rb

@@ -42,12 +42,12 @@ RSpec.describe 'Labels Hierarchy', :js do
 
     it 'does not find child group labels on dropdown' do
       page.within('.block.labels') do
-        find('.edit-link').click
-      end
+        click_on 'Edit'
 
-      wait_for_requests
+        wait_for_requests
 
-      expect(page).not_to have_selector('.badge', text: child_group_label.title)
+        expect(page).not_to have_text(child_group_label.title)
+      end
     end
   end
 

spec/frontend/sidebar/sidebar_labels_spec.js

+import { createLocalVue, shallowMount } from '@vue/test-utils';
+import AxiosMockAdapter from 'axios-mock-adapter';
+import Vuex from 'vuex';
+import {
+  mockLabels,
+  mockRegularLabel,
+} from 'jest/vue_shared/components/sidebar/labels_select_vue/mock_data';
+import axios from '~/lib/utils/axios_utils';
+import SidebarLabels from '~/sidebar/components/labels/sidebar_labels.vue';
+import { DropdownVariant } from '~/vue_shared/components/sidebar/labels_select_vue/constants';
+import LabelsSelect from '~/vue_shared/components/sidebar/labels_select_vue/labels_select_root.vue';
+import labelsSelectModule from '~/vue_shared/components/sidebar/labels_select_vue/store';
+
+const localVue = createLocalVue();
+localVue.use(Vuex);
+
+describe('sidebar labels', () => {
+  let axiosMock;
+  let wrapper;
+
+  const store = new Vuex.Store(labelsSelectModule());
+
+  const defaultProps = {
+    allowLabelCreate: true,
+    allowLabelEdit: true,
+    allowScopedLabels: true,
+    canEdit: true,
+    iid: '1',
+    initiallySelectedLabels: mockLabels,
+    issuableType: 'issue',
+    labelsFetchPath: '/gitlab-org/gitlab-test/-/labels.json?include_ancestor_groups=true',
+    labelsManagePath: '/gitlab-org/gitlab-test/-/labels',
+    labelsUpdatePath: '/gitlab-org/gitlab-test/-/issues/1.json',
+    projectIssuesPath: '/gitlab-org/gitlab-test/-/issues',
+    projectPath: 'gitlab-org/gitlab-test',
+  };
+
+  const findLabelsSelect = () => wrapper.find(LabelsSelect);
+
+  const mountComponent = () => {
+    wrapper = shallowMount(SidebarLabels, {
+      localVue,
+      provide: {
+        ...defaultProps,
+      },
+      store,
+    });
+  };
+
+  beforeEach(() => {
+    axiosMock = new AxiosMockAdapter(axios);
+  });
+
+  afterEach(() => {
+    wrapper.destroy();
+    wrapper = null;
+    axiosMock.restore();
+  });
+
+  describe('LabelsSelect props', () => {
+    beforeEach(() => {
+      mountComponent();
+    });
+
+    it('are as expected', () => {
+      expect(findLabelsSelect().props()).toMatchObject({
+        allowLabelCreate: defaultProps.allowLabelCreate,
+        allowLabelEdit: defaultProps.allowLabelEdit,
+        allowMultiselect: true,
+        allowScopedLabels: defaultProps.allowScopedLabels,
+        footerCreateLabelTitle: 'Create project label',
+        footerManageLabelTitle: 'Manage project labels',
+        labelsCreateTitle: 'Create project label',
+        labelsFetchPath: defaultProps.labelsFetchPath,
+        labelsFilterBasePath: defaultProps.projectIssuesPath,
+        labelsManagePath: defaultProps.labelsManagePath,
+        labelsSelectInProgress: false,
+        selectedLabels: defaultProps.initiallySelectedLabels,
+        variant: DropdownVariant.Sidebar,
+      });
+    });
+  });
+
+  describe('when labels are changed', () => {
+    beforeEach(() => {
+      mountComponent();
+    });
+
+    it('makes an API call to update labels', async () => {
+      const labels = [
+        {
+          ...mockRegularLabel,
+          set: false,
+        },
+        {
+          id: 40,
+          title: 'Security',
+          color: '#ddd',
+          text_color: '#fff',
+          set: true,
+        },
+        {
+          id: 55,
+          title: 'Tooling',
+          color: '#ddd',
+          text_color: '#fff',
+          set: false,
+        },
+      ];
+
+      findLabelsSelect().vm.$emit('updateSelectedLabels', labels);
+
+      await axios.waitForAll();
+
+      const expected = {
+        [defaultProps.issuableType]: {
+          label_ids: [27, 28, 40],
+        },
+      };
+
+      expect(axiosMock.history.put[0].data).toEqual(JSON.stringify(expected));
+    });
+  });
+});

spec/frontend/vue_shared/components/sidebar/labels_select_vue/labels_select_root_spec.js

@@ -150,11 +150,10 @@ describe('LabelsSelectRoot', () => {
       expect(wrapper.find(DropdownTitle).exists()).toBe(true);
     });
 
-    it('renders `dropdown-value` component with slot when `showDropdownButton` prop is `false`', () => {
+    it('renders `dropdown-value` component', () => {
       const wrapperDropdownValue = createComponent(mockConfig, {
         default: 'None',
       });
-      wrapperDropdownValue.vm.$store.state.showDropdownButton = false;
 
       return wrapperDropdownValue.vm.$nextTick(() => {
         const valueComp = wrapperDropdownValue.find(DropdownValue);

spec/frontend/vue_shared/components/sidebar/labels_select_vue/store/actions_spec.js

@@ -259,6 +259,21 @@ describe('LabelsSelect Actions', () => {
     });
   });
 
+  describe('replaceSelectedLabels', () => {
+    it('replaces `state.selectedLabels`', done => {
+      const selectedLabels = [{ id: 1 }, { id: 2 }, { id: 3 }, { id: 4 }];
+
+      testAction(
+        actions.replaceSelectedLabels,
+        selectedLabels,
+        state,
+        [{ type: types.REPLACE_SELECTED_LABELS, payload: selectedLabels }],
+        [],
+        done,
+      );
+    });
+  });
+
   describe('updateSelectedLabels', () => {
     it('updates `state.labels` based on provided `labels` param', done => {
       const labels = [{ id: 1 }, { id: 2 }, { id: 3 }, { id: 4 }];

spec/frontend/vue_shared/components/sidebar/labels_select_vue/store/mutations_spec.js

@@ -152,6 +152,19 @@ describe('LabelsSelect Mutations', () => {
     });
   });
 
+  describe(`${types.REPLACE_SELECTED_LABELS}`, () => {
+    it('replaces `state.selectedLabels`', () => {
+      const state = {
+        selectedLabels: [{ id: 1 }, { id: 2 }, { id: 3 }, { id: 4 }],
+      };
+      const newSelectedLabels = [{ id: 2 }, { id: 5 }];
+
+      mutations[types.REPLACE_SELECTED_LABELS](state, newSelectedLabels);
+
+      expect(state.selectedLabels).toEqual(newSelectedLabels);
+    });
+  });
+
   describe(`${types.UPDATE_SELECTED_LABELS}`, () => {
     const labels = [{ id: 1 }, { id: 2 }, { id: 3 }, { id: 4 }];