Add support for closing epics

app/assets/javascripts/issue_show/components/app.vue

@@ -293,6 +293,7 @@
         :show-delete-button="showDeleteButton"
         :can-attach-file="canAttachFile"
         :enable-autocomplete="enableAutocomplete"
+        :issuable-type="issuableType"
       />
 
       <recaptcha-modal

app/assets/javascripts/issue_show/components/edit_actions.vue

 <script>
+  import { __, sprintf } from '~/locale';
   import updateMixin from '../mixins/update';
   import eventHub from '../event_hub';
 
+  const issuableTypes = {
+    issue: __('Issue'),
+    epic: __('Epic'),
+  };
+
   export default {
     mixins: [updateMixin],
     props: {
@@ -18,6 +24,10 @@
         required: false,
         default: true,
       },
+      issuableType: {
+        type: String,
+        required: true,
+      },
     },
     data() {
       return {
@@ -37,8 +47,11 @@
         eventHub.$emit('close.form');
       },
       deleteIssuable() {
+        const confirmMessage = sprintf(__('%{issuableType} will be removed! Are you sure?'), {
+          issuableType: issuableTypes[this.issuableType],
+        });
         // eslint-disable-next-line no-alert
-        if (window.confirm('Issue will be removed! Are you sure?')) {
+        if (window.confirm(confirmMessage)) {
           this.deleteLoading = true;
 
           eventHub.$emit('delete.issuable');

app/assets/javascripts/issue_show/components/form.vue

@@ -27,6 +27,10 @@
         required: false,
         default: () => [],
       },
+      issuableType: {
+        type: String,
+        required: true,
+      },
       markdownPreviewPath: {
         type: String,
         required: true,
@@ -110,6 +114,7 @@
       :form-state="formState"
       :can-destroy="canDestroy"
       :show-delete-button="showDeleteButton"
+      :issuable-type="issuableType"
     />
   </form>
 </template>

app/services/notes/quick_actions_service.rb

@@ -5,7 +5,8 @@ module Notes
     UPDATE_SERVICES = {
       'Issue' => Issues::UpdateService,
       'MergeRequest' => MergeRequests::UpdateService,
-      'Commit' => Commits::TagService
+      'Commit' => Commits::TagService,
+      'Epic' => Epics::UpdateService
     }.freeze
 
     def self.noteable_update_service(note)

db/schema.rb

@@ -11,7 +11,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 20180917214204) do
+ActiveRecord::Schema.define(version: 20180920043317) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
@@ -973,10 +973,14 @@ ActiveRecord::Schema.define(version: 20180917214204) do
     t.date "due_date_fixed"
     t.boolean "start_date_is_fixed"
     t.boolean "due_date_is_fixed"
+    t.integer "state", limit: 2, default: 1, null: false
+    t.integer "closed_by_id"
+    t.datetime "closed_at"
   end
 
   add_index "epics", ["assignee_id"], name: "index_epics_on_assignee_id", using: :btree
   add_index "epics", ["author_id"], name: "index_epics_on_author_id", using: :btree
+  add_index "epics", ["closed_by_id"], name: "index_epics_on_closed_by_id", using: :btree
   add_index "epics", ["end_date"], name: "index_epics_on_end_date", using: :btree
   add_index "epics", ["group_id"], name: "index_epics_on_group_id", using: :btree
   add_index "epics", ["iid"], name: "index_epics_on_iid", using: :btree
@@ -3123,6 +3127,7 @@ ActiveRecord::Schema.define(version: 20180917214204) do
   add_foreign_key "epics", "namespaces", column: "group_id", name: "fk_f081aa4489", on_delete: :cascade
   add_foreign_key "epics", "users", column: "assignee_id", name: "fk_dccd3f98fc", on_delete: :nullify
   add_foreign_key "epics", "users", column: "author_id", name: "fk_3654b61b03", on_delete: :cascade
+  add_foreign_key "epics", "users", column: "closed_by_id", name: "fk_aa5798e761", on_delete: :nullify
   add_foreign_key "events", "projects", on_delete: :cascade
   add_foreign_key "events", "users", column: "author_id", name: "fk_edfd187b6f", on_delete: :cascade
   add_foreign_key "fork_network_members", "fork_networks", on_delete: :cascade

doc/api/epics.md

@@ -208,6 +208,7 @@ PUT /groups/:id/epics/:epic_iid
 | `start_date_fixed`  | string           | no         | The fixed start date of an epic (since 11.3) |
 | `due_date_is_fixed` | boolean          | no         | Whether due date should be sourced from `due_date_fixed` or from milestones (since 11.3) |
 | `due_date_fixed`    | string           | no         | The fixed due date of an epic (since 11.3) |
+| `state_event`       | string           | no         | State event for an epic. Set `close` to close the epic and `reopen` to reopen it (since 11.4) |
 
 ```bash
 curl --header PUT "PRIVATE-TOKEN: 9koXpg98eAheJpvBs5tK" https://gitlab.example.com/api/v4/groups/1/epics/5?title=New%20Title

doc/user/group/epics/index.md

@@ -64,6 +64,23 @@ A modal will pop-up to confirm your action.
 Deleting an epic releases all existing issues from their associated epic in the
 system.
 
+## Closing and reopening epics
+
+### Using buttons
+
+Whenever you decide that there is no longer need for that epic,
+close the epic using the close button:
+
+![close epic - button](img/button_close_epic.png)
+
+You can always reopen it using the reopen button.
+
+![reopen epic - button](img/button_reopen_epic.png)
+
+### Using quick actions
+
+You can close or reopen an epic using [Quick actions](../../project/quick_actions.md)
+
 ## Navigating to an epic from an issue
 
 If an issue belongs to an epic, you can navigate to the containing epic with the

doc/user/project/quick_actions.md

@@ -12,8 +12,8 @@ do.
 
 | Command                    | Action       |
 |:---------------------------|:-------------|
-| `/close`                   | Close the issue or merge request |
-| `/reopen`                  | Reopen the issue or merge request |
+| `/close`                   | Close the issue, merge request or epic |
+| `/reopen`                  | Reopen the issue, merge request or epic |
 | `/merge`                   | Merge (when pipeline succeeds) |
 | `/title <New title>`       | Change title |
 | `/assign @user1 @user2 `   | Add assignee(s) |

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

+export const status = {
+  open: 'opened',
+  close: 'closed',
+};
+
+export const stateEvent = {
+  close: 'close',
+  reopen: 'reopen',
+};

ee/app/assets/javascripts/epics/epic_show/components/epic_header.vue

 <script>
+  import $ from 'jquery';
   import userAvatarLink from '~/vue_shared/components/user_avatar/user_avatar_link.vue';
   import timeagoTooltip from '~/vue_shared/components/time_ago_tooltip.vue';
+  import Icon from '~/vue_shared/components/icon.vue';
+  import LoadingButton from '~/vue_shared/components/loading_button.vue';
   import tooltip from '~/vue_shared/directives/tooltip';
-  import loadingButton from '~/vue_shared/components/loading_button.vue';
-  import { s__ } from '~/locale';
+  import { __, s__ } from '~/locale';
   import eventHub from '../../event_hub';
+  import { stateEvent } from '../../constants';
 
   export default {
     name: 'EpicHeader',
@@ -12,9 +15,10 @@
       tooltip,
     },
     components: {
+      Icon,
+      LoadingButton,
       userAvatarLink,
       timeagoTooltip,
-      loadingButton,
     },
     props: {
       author: {
@@ -26,17 +30,42 @@
         type: String,
         required: true,
       },
-      canDelete: {
+      open: {
+        type: Boolean,
+        required: true,
+      },
+      canUpdate: {
+        required: true,
         type: Boolean,
-        required: false,
-        default: false,
       },
     },
     data() {
       return {
         deleteLoading: false,
+        statusUpdating: false,
+        isEpicOpen: this.open,
       };
     },
+    computed: {
+      statusIcon() {
+        return this.isEpicOpen ? 'issue-open-m' : 'mobile-issue-close';
+      },
+      statusText() {
+        return this.isEpicOpen ? __('Open') : __('Closed');
+      },
+      actionButtonClass() {
+        return `btn btn-grouped js-btn-epic-action ${this.isEpicOpen ? 'btn-close' : 'btn-open'}`;
+      },
+      actionButtonText() {
+        return this.isEpicOpen ? __('Close epic') : __('Reopen epic');
+      },
+    },
+    mounted() {
+      $(document).on('issuable_vue_app:change', (e, isClosed) => {
+        this.isEpicOpen = e.detail ? !e.detail.isClosed : !isClosed;
+        this.statusUpdating = false;
+      });
+    },
     methods: {
       deleteEpic() {
         if (window.confirm(s__('Epic will be removed! Are you sure?'))) { // eslint-disable-line no-alert
@@ -47,12 +76,27 @@
       toggleSidebar() {
         eventHub.$emit('toggleSidebar');
       },
+      toggleStatus() {
+        this.statusUpdating = true;
+        this.$emit('toggleEpicStatus', this.isEpicOpen ? stateEvent.close : stateEvent.reopen);
+      },
     },
   };
 </script>
 
 <template>
   <div class="detail-page-header">
+    <div class="detail-page-header-body">
+      <div
+        :class="{ 'status-box-open': isEpicOpen, 'status-box-issue-closed': !isEpicOpen }"
+        class="issuable-status-box status-box"
+      >
+        <icon
+          :name="statusIcon"
+          css-classes="d-block d-sm-none"
+        />
+        <span class="d-none d-sm-block">{{ statusText }}</span>
+      </div>
       <div class="issuable-meta">
         {{ s__('Opened') }}
         <timeago-tooltip :time="created" />
@@ -68,13 +112,18 @@
           />
         </strong>
       </div>
+    </div>
+    <div
+      v-if="canUpdate"
+      class="detail-page-header-actions js-issuable-actions"
+    >
       <loading-button
-      v-if="canDelete"
-      :loading="deleteLoading"
-      :label="s__('Delete')"
-      container-class="btn btn-remove btn-inverted flex-right"
-      @click="deleteEpic"
+        :label="actionButtonText"
+        :loading="statusUpdating"
+        :container-class="actionButtonClass"
+        @click="toggleStatus"
       />
+    </div>
     <button
       :aria-label="__('toggle collapse')"
       class="btn btn-default float-right d-block d-sm-none

ee/app/assets/javascripts/epics/epic_show/components/epic_show_app.vue

 <script>
   /* eslint-disable vue/require-default-prop */
+  import $ from 'jquery';
   import issuableApp from '~/issue_show/components/app.vue';
+  import flash from '~/flash';
+  import { __ } from '~/locale';
   import relatedIssuesRoot from 'ee/related_issues/components/related_issues_root.vue';
-  import issuableAppEventHub from '~/issue_show/event_hub';
   import epicSidebar from '../../sidebar/components/sidebar_app.vue';
   import SidebarContext from '../sidebar_context';
   import epicHeader from './epic_header.vue';
+  import EpicsService from '../../service/epics_service';
+  import { status, stateEvent } from '../../constants';
 
   export default {
     name: 'EpicShowApp',
@@ -174,6 +178,11 @@
         type: String,
         required: true,
       },
+      state: {
+        type: String,
+        required: true,
+        default: status.open,
+      },
     },
     data() {
       return {
@@ -181,14 +190,42 @@
         issuableRef: '',
         projectPath: this.groupPath,
         projectNamespace: '',
+        service: new EpicsService({
+          endpoint: this.endpoint,
+        }),
       };
     },
+    computed: {
+      open() {
+        return this.state === status.open;
+      },
+    },
     mounted() {
       this.sidebarContext = new SidebarContext();
     },
     methods: {
-      deleteEpic() {
-        issuableAppEventHub.$emit('delete.issuable');
+      triggerDocumentEvent(eventName, isClosed) {
+        $(document).trigger(eventName, isClosed);
+      },
+      toggleEpicStatus(stateEventType) {
+        return this.service
+          .updateStatus(stateEventType)
+          .then(() => {
+            const isClosed = stateEventType === stateEvent.close;
+
+            // Ensure that status change is reflected across the page.
+            // As `Close`/`Reopen` button is also present under
+            // comment form (part of Notes app)
+            // We've wrapped call to `$(document).trigger` for ease of testing
+            this.triggerDocumentEvent('issuable_vue_app:change', isClosed);
+            this.triggerDocumentEvent('issuable:change', isClosed);
+          })
+          .catch(() => {
+            flash(__('Unable to update this epic at this time.'));
+            const isClosed = stateEventType !== stateEvent.close;
+            this.triggerDocumentEvent('issuable_vue_app:change', isClosed);
+            this.triggerDocumentEvent('issuable:change', isClosed);
+          });
       },
     },
   };
@@ -199,8 +236,10 @@
     <epic-header
       :author="author"
       :created="created"
+      :open="open"
       :can-delete="canDestroy"
-      @deleteEpic="deleteEpic"
+      :can-update="canUpdate"
+      @toggleEpicStatus="toggleEpicStatus"
     />
     <div class="issuable-details content-block">
       <div class="detail-page-description">
@@ -219,7 +258,7 @@
           :project-path="projectPath"
           :project-namespace="projectNamespace"
           :show-inline-edit-button="true"
-          :show-delete-button="false"
+          :show-delete-button="canDestroy"
           :enable-autocomplete="true"
           issuable-type="epic"
         />

ee/app/assets/javascripts/epics/service/epics_service.js

+import axios from '~/lib/utils/axios_utils';
+
+export default class EpicsService {
+  constructor({ endpoint }) {
+    this.endpoint = endpoint;
+  }
+
+  updateStatus(stateEventType) {
+    const queryParam = `epic[state_event]=${stateEventType}`;
+    return axios.put(`${this.endpoint}.json?${encodeURI(queryParam)}`);
+  }
+}

ee/app/assets/stylesheets/pages/epics.scss

@@ -35,9 +35,16 @@
 }
 
 @include media-breakpoint-down(xs) {
-  .epic-page-container .detail-page-header {
+  .epic-page-container {
+    .detail-page-header {
       display: flex;
     }
+
+    .detail-page-header-actions {
+      width: auto;
+      margin-top: 0;
+    }
+  }
 }
 
 .tooltip .tooltip-inner .milestone-date-range {

ee/app/controllers/groups/epics_controller.rb

@@ -73,6 +73,7 @@ class Groups::EpicsController < Groups::ApplicationController
       :start_date_is_fixed,
       :due_date_fixed,
       :due_date_is_fixed,
+      :state_event,
       label_ids: []
     ]
   end

ee/app/helpers/epics_helper.rb

@@ -25,7 +25,8 @@ module EpicsHelper
       due_date_fixed: epic.due_date_fixed,
       due_date_from_milestones: epic.due_date_from_milestones,
       due_date_sourcing_milestone_title: epic.due_date_sourcing_milestone&.title,
-      end_date: epic.end_date
+      end_date: epic.end_date,
+      state: epic.state
     }
 
     epic_meta[:todo_delete_path] = dashboard_todo_path(todo) if todo.present?

ee/app/models/ee/epic.rb

@@ -11,6 +11,22 @@ module EE
       include Awardable
       include LabelEventable
 
+      enum state: { opened: 1, closed: 2 }
+
+      belongs_to :closed_by, class_name: 'User'
+
+      def reopen
+        return if opened?
+
+        update(state: :opened, closed_at: nil, closed_by: nil)
+      end
+
+      def close
+        return if closed?
+
+        update(state: :closed, closed_at: Time.zone.now)
+      end
+
       belongs_to :assignee, class_name: "User"
       belongs_to :group
       belongs_to :start_date_sourcing_milestone, class_name: 'Milestone'

ee/app/serializers/epic_entity.rb

@@ -14,6 +14,7 @@ class EpicEntity < IssuableEntity
   expose :end_date, as: :due_date
   expose :due_date_is_fixed?, as: :due_date_is_fixed
   expose :due_date_fixed, :due_date_from_milestones
+  expose :state
 
   expose :web_url do |epic|
     group_epic_path(epic.group, epic)
@@ -24,6 +25,10 @@ class EpicEntity < IssuableEntity
     expose :can_create_note do |epic|
       can?(request.current_user, :create_note, epic)
     end
+
+    expose :can_update do |epic|
+      can?(request.current_user, :update_epic, epic)
+    end
   end
 
   expose :create_note_path do |epic|

ee/app/services/epics/base_service.rb

@@ -2,7 +2,7 @@ module Epics
   class BaseService < IssuableBaseService
     attr_reader :group
 
-    def initialize(group, current_user, params)
+    def initialize(group, current_user, params = {})
       @group, @current_user, @params = group, current_user, params
     end
 
@@ -20,5 +20,13 @@ module Epics
     def parent
       group
     end
+
+    def close_service
+      Epics::CloseService
+    end
+
+    def reopen_service
+      Epics::ReopenService
+    end
   end
 end

ee/app/services/epics/close_service.rb

+# frozen_string_literal: true
+
+module Epics
+  class CloseService < Epics::BaseService
+    def execute(epic)
+      return epic unless can?(current_user, :update_epic, epic)
+
+      close_epic(epic)
+    end
+
+    private
+
+    def close_epic(epic)
+      if epic.close
+        epic.update(closed_by: current_user)
+      end
+    end
+  end
+end

ee/app/services/epics/reopen_service.rb

+# frozen_string_literal: true
+
+module Epics
+  class ReopenService < Epics::BaseService
+    def execute(epic)
+      return epic unless can?(current_user, :update_epic, epic)
+
+      epic.reopen
+      epic
+    end
+  end
+end

ee/changelogs/unreleased/7013-add-epics-close-support.yml

+---
+title: Add support for closing epics
+merge_request: 7302
+author:
+type: added

ee/db/migrate/20180910104020_add_closed_columns_to_epic.rb

+# frozen_string_literal: true
+class AddClosedColumnsToEpic < ActiveRecord::Migration
+  DOWNTIME = false
+
+  def up
+    add_reference :epics, :closed_by, index: true
+    add_column :epics, :closed_at, :datetime_with_timezone
+  end
+
+  def down
+    remove_reference :epics, :closed_by, index: true
+    remove_column :epics, :closed_at
+  end
+end

ee/db/migrate/20180910105100_add_state_to_epic.rb

+# frozen_string_literal: true
+class AddStateToEpic < ActiveRecord::Migration
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+
+  disable_ddl_transaction!
+
+  def up
+    add_column_with_default :epics, :state, :integer, limit: 2, default: 1
+  end
+
+  def down
+    remove_column :epics, :state
+  end
+end

ee/db/migrate/20180920043317_add_foreign_key_to_epics.rb

+# frozen_string_literal: true
+
+class AddForeignKeyToEpics < ActiveRecord::Migration
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+
+  disable_ddl_transaction!
+
+  def up
+    add_concurrent_foreign_key :epics, :users, column: :closed_by_id, on_delete: :nullify
+  end
+
+  def down
+    remove_foreign_key :epics, column: :closed_by_id
+  end
+end

ee/lib/api/epics.rb

@@ -112,7 +112,8 @@ module API
         optional :end_date, as: :due_date_fixed, type: String, desc: 'The due date of an epic'
         optional :due_date_is_fixed, type: Boolean, desc: 'Indicates due date should be sourced from due_date_fixed field not the issue milestones'
         optional :labels, type: String, desc: 'Comma-separated list of label names'
-        at_least_one_of :title, :description, :start_date_fixed, :start_date_is_fixed, :due_date_fixed, :due_date_is_fixed, :labels
+        optional :state_event, type: String, values: %w[reopen close], desc: 'State event for an epic'
+        at_least_one_of :title, :description, :start_date_fixed, :start_date_is_fixed, :due_date_fixed, :due_date_is_fixed, :labels, :state_event
       end
       put ':id/(-/)epics/:epic_iid' do
         authorize_can_admin!

ee/lib/ee/api/entities.rb

@@ -180,6 +180,7 @@ module EE
         expose :end_date, as: :due_date
         expose :due_date_is_fixed?, as: :due_date_is_fixed, if: can_admin_epic
         expose :due_date_fixed, :due_date_from_milestones, if: can_admin_epic
+        expose :state
         expose :created_at
         expose :updated_at
         expose :labels do |epic, options|

ee/spec/controllers/groups/epics_controller_spec.rb

@@ -225,25 +225,71 @@ describe Groups::EpicsController do
     end
 
     describe 'PUT #update' do
-      let(:date) { Date.new(2002, 1, 1)}
+      let(:date) { Date.new(2002, 1, 1) }
+      let(:params) do
+        {
+          title: 'New title',
+          label_ids: [label.id],
+          start_date_fixed: '2002-01-01',
+          start_date_is_fixed: true
+        }
+      end
 
       before do
         group.add_developer(user)
-        put :update, group_id: group, id: epic.to_param, epic: { title: 'New title', label_ids: [label.id], start_date_fixed: '2002-01-01', start_date_is_fixed: true }, format: :json
       end
 
+      context 'with correct basic params'  do
         it 'returns status 200' do
+          update_epic(epic, params)
+
           expect(response.status).to eq(200)
         end
 
         it 'updates the epic correctly' do
+          update_epic(epic, params)
+
+          expect(epic.reload).to have_attributes(
+            title: 'New title',
+            labels: [label],
+            start_date_fixed: date,
+            start_date: date,
+            start_date_is_fixed: true,
+            state: 'opened'
+          )
+        end
+      end
+
+      context 'when state_event param is close' do
+        it 'allows epic to be closed' do
+          update_epic(epic, params.merge(state_event: 'close'))
+
           epic.reload
 
-        expect(epic.title).to eq('New title')
-        expect(epic.labels).to eq([label])
-        expect(epic.start_date_fixed).to eq(date)
-        expect(epic.start_date).to eq(date)
-        expect(epic.start_date_is_fixed).to eq(true)
+          expect(epic).to be_closed
+          expect(epic.closed_at).not_to be_nil
+          expect(epic.closed_by).to eq(user)
+        end
+      end
+
+      context 'when state_event param is reopen' do
+        before do
+          epic.update!(state: 'closed', closed_at: Time.now, closed_by: user)
+        end
+
+        it 'allows epic to be reopened' do
+          update_epic(epic, params.merge(state_event: 'reopen'))
+
+          epic.reload
+
+          expect(epic).to be_opened
+          expect(epic.closed_at).to be_nil
+          expect(epic.closed_by).to be_nil
+        end
+      end
+
+      def update_epic(epic, params)
+        put :update, group_id: epic.group.to_param, id: epic.to_param, epic: params, format: :json
       end
     end
 

ee/spec/features/epics/delete_epic_spec.rb

@@ -25,11 +25,12 @@ describe 'Delete Epic', :js do
       group.add_owner(user)
       visit group_epic_path(group, epic)
       wait_for_requests
+      find('.js-issuable-edit').click
     end
 
     it 'deletes the issue and redirect to epic list' do
       page.accept_alert 'Epic will be removed! Are you sure?' do
-        find('.detail-page-header button').click
+        find(:button, text: 'Delete').click
       end
 
       wait_for_requests

ee/spec/features/epics/update_epic_spec.rb

@@ -139,10 +139,10 @@ describe 'Update Epic', :js do
       wait_for_requests
     end
 
-    it 'does not show delete button inside the edit form' do
+    it 'shows delete button inside the edit form' do
       find('.btn-edit').click
 
-      expect(page).not_to have_selector('.issuable-details .btn-danger')
+      expect(page).to have_selector('.issuable-details .btn-danger')
     end
   end
 end

ee/spec/fixtures/api/schemas/public_api/v4/epic.json

@@ -33,6 +33,7 @@
     "due_date_fixed": { "type": ["date", "null"] },
     "due_date_from_milestones": { "type": ["date", "null"] },
     "due_date_is_fixed": { "type": "boolean" },
+    "state": { "type": "string" },
     "created_at": { "type": ["string", "null"] },
     "updated_at": { "type": ["string", "null"] }
   },

ee/spec/fixtures/api/schemas/public_api/v4/epic_issue_link.json

@@ -27,6 +27,7 @@
         "due_date_fixed": { "type": ["date", "null"] },
         "due_date_from_milestones": { "type": ["date", "null"] },
         "due_date_is_fixed": { "type": "boolean" },
+        "state": { "type": "string" },
         "created_at": { "type": ["string", "null"] },
         "updated_at": { "type": ["string", "null"] },
         "labels": {

ee/spec/helpers/epics_helper_spec.rb

@@ -29,7 +29,7 @@ describe EpicsHelper do
       expected_keys = %i(initial meta namespace labels_path toggle_subscription_path labels_web_url epics_web_url)
       expect(data.keys).to match_array(expected_keys)
       expect(meta_data.keys).to match_array(%w[
-        created author epic_id todo_exists todo_path
+        created author epic_id todo_exists todo_path state
         start_date start_date_fixed start_date_is_fixed start_date_from_milestones start_date_sourcing_milestone_title
         end_date due_date due_date_fixed due_date_is_fixed due_date_from_milestones due_date_sourcing_milestone_title
       ])
@@ -44,6 +44,40 @@ describe EpicsHelper do
       expect(meta_data['due_date']).to eq('2000-01-02')
       expect(meta_data['due_date_sourcing_milestone_title']).to eq(milestone.title)
     end
+
+    context 'when a user can update an epic' do
+      let(:milestone) { create(:milestone, title: 'make me a sandwich') }
+
+      let!(:epic) do
+        create(
+          :epic,
+          author: user,
+          start_date_sourcing_milestone: milestone,
+          start_date: Date.new(2000, 1, 1),
+          due_date_sourcing_milestone: milestone,
+          due_date: Date.new(2000, 1, 2)
+        )
+      end
+
+      before do
+        epic.group.add_developer(user)
+      end
+
+      it 'returns extra date fields' do
+        data = helper.epic_show_app_data(epic, initial: {}, author_icon: 'icon_path')
+        meta_data = JSON.parse(data[:meta])
+
+        expect(meta_data.keys).to match_array(%w[
+          created author epic_id todo_exists todo_path state
+          start_date start_date_fixed start_date_is_fixed start_date_from_milestones start_date_sourcing_milestone_title
+          end_date due_date due_date_fixed due_date_is_fixed due_date_from_milestones due_date_sourcing_milestone_title
+        ])
+        expect(meta_data['start_date']).to eq('2000-01-01')
+        expect(meta_data['start_date_sourcing_milestone_title']).to eq(milestone.title)
+        expect(meta_data['due_date']).to eq('2000-01-02')
+        expect(meta_data['due_date_sourcing_milestone_title']).to eq(milestone.title)
+      end
+    end
   end
 
   describe '#epic_endpoint_query_params' do

ee/spec/javascripts/epics/epic_show/components/epic_header_spec.js

 import Vue from 'vue';
 import epicHeader from 'ee/epics/epic_show/components/epic_header.vue';
+import { stateEvent } from 'ee/epics/constants';
 import mountComponent from 'spec/helpers/vue_mount_component_helper';
 import { headerProps } from '../mock_data';
 
@@ -38,41 +39,90 @@ describe('epicHeader', () => {
     expect(vm.$el.querySelector('button.js-sidebar-toggle')).not.toBe(null);
   });
 
-  describe('canDelete', () => {
-    it('should not show loading button by default', () => {
-      expect(vm.$el.querySelector('.btn-remove')).toBeNull();
+  it('should render status badge', () => {
+    const badgeEl = vm.$el.querySelector('.issuable-status-box');
+    const badgeIconEl = badgeEl.querySelector('svg use');
+    expect(badgeEl).not.toBe(null);
+    expect(badgeEl.innerText.trim()).toBe('Open');
+    expect(badgeIconEl.getAttribute('xlink:href')).toContain('issue-open-m');
   });
 
-    it('should show loading button if canDelete', done => {
-      vm.canDelete = true;
-      Vue.nextTick(() => {
-        expect(vm.$el.querySelector('.btn-remove')).toBeDefined();
-        done();
+  it('should render `Close epic` button when `isEpicOpen` & `canUpdate` props are true', () => {
+    vm.isEpicOpen = true;
+    const closeButtonEl = vm.$el.querySelector('.js-issuable-actions .js-btn-epic-action');
+    expect(closeButtonEl).not.toBe(null);
+    expect(closeButtonEl.innerText.trim()).toBe('Close epic');
   });
+
+  describe('computed', () => {
+    describe('statusIcon', () => {
+      it('returns `issue-open-m` when `isEpicOpen` prop is true', () => {
+        vm.isEpicOpen = true;
+        expect(vm.statusIcon).toBe('issue-open-m');
+      });
+
+      it('returns `mobile-issue-close` when `isEpicOpen` prop is false', () => {
+        vm.isEpicOpen = false;
+        expect(vm.statusIcon).toBe('mobile-issue-close');
       });
     });
 
-  describe('delete epic', () => {
-    let deleteEpic;
+    describe('statusText', () => {
+      it('returns `Open` when `isEpicOpen` prop is true', () => {
+        vm.isEpicOpen = true;
+        expect(vm.statusText).toBe('Open');
+      });
 
-    beforeEach(done => {
-      deleteEpic = jasmine.createSpy();
-      spyOn(window, 'confirm').and.returnValue(true);
-      vm.canDelete = true;
-      vm.$on('deleteEpic', deleteEpic);
+      it('returns `Closed` when `isEpicOpen` prop is false', () => {
+        vm.isEpicOpen = false;
+        expect(vm.statusText).toBe('Closed');
+      });
+    });
+
+    describe('actionButtonClass', () => {
+      it('returns classes `btn btn-grouped js-btn-epic-action` & `btn-close` when `isEpicOpen` prop is true', () => {
+        vm.isEpicOpen = true;
+        expect(vm.actionButtonClass).toContain('btn btn-grouped js-btn-epic-action btn-close');
+      });
 
-      Vue.nextTick(() => {
-        vm.$el.querySelector('.btn-remove').click();
-        done();
+      it('returns classes `btn btn-grouped js-btn-epic-action` & `btn-open` when `isEpicOpen` prop is false', () => {
+        vm.isEpicOpen = false;
+        expect(vm.actionButtonClass).toContain('btn btn-grouped js-btn-epic-action btn-open');
       });
     });
 
-    it('should set deleteLoading', () => {
-      expect(vm.deleteLoading).toEqual(true);
+    describe('actionButtonText', () => {
+      it('returns `Close epic` when `isEpicOpen` prop is true', () => {
+        vm.isEpicOpen = true;
+        expect(vm.actionButtonText).toBe('Close epic');
       });
 
-    it('should emit deleteEpic event', () => {
-      expect(deleteEpic).toHaveBeenCalled();
+      it('returns `Reopen epic` when `isEpicOpen` prop is false', () => {
+        vm.isEpicOpen = false;
+        expect(vm.actionButtonText).toBe('Reopen epic');
+      });
+    });
+  });
+
+  describe('methods', () => {
+    describe('toggleStatus', () => {
+      it('emits `toggleEpicStatus` on component with stateEventType param as `close` when `isEpicOpen` prop is true', () => {
+        spyOn(vm, '$emit');
+
+        vm.isEpicOpen = true;
+        vm.toggleStatus();
+        expect(vm.statusUpdating).toBe(true);
+        expect(vm.$emit).toHaveBeenCalledWith('toggleEpicStatus', stateEvent.close);
+      });
+
+      it('emits `toggleEpicStatus` on component with stateEventType param as `reopen` when `isEpicOpen` prop is false', () => {
+        spyOn(vm, '$emit');
+
+        vm.isEpicOpen = false;
+        vm.toggleStatus();
+        expect(vm.statusUpdating).toBe(true);
+        expect(vm.$emit).toHaveBeenCalledWith('toggleEpicStatus', stateEvent.reopen);
+      });
     });
   });
 });

ee/spec/javascripts/epics/epic_show/components/epic_show_app_spec.js

@@ -3,13 +3,14 @@ import MockAdapter from 'axios-mock-adapter';
 import axios from '~/lib/utils/axios_utils';
 import epicShowApp from 'ee/epics/epic_show/components/epic_show_app.vue';
 import epicHeader from 'ee/epics/epic_show/components/epic_header.vue';
+import { stateEvent } from 'ee/epics/constants';
 import issuableApp from '~/issue_show/components/app.vue';
-import issuableAppEventHub from '~/issue_show/event_hub';
 import mountComponent from 'spec/helpers/vue_mount_component_helper';
 import issueShowData from 'spec/issue_show/mock_data';
 import { props } from '../mock_data';
 
-describe('EpicShowApp', () => {
+// eslint-disable-next-line
+fdescribe('EpicShowApp', () => {
   let mock;
   let vm;
   let headerVm;
@@ -18,7 +19,6 @@ describe('EpicShowApp', () => {
   beforeEach((done) => {
     mock = new MockAdapter(axios);
     mock.onGet('/realtime_changes').reply(200, issueShowData.initialRequest);
-    mock.onAny().reply(404, null);
 
     const {
       canUpdate,
@@ -32,6 +32,8 @@ describe('EpicShowApp', () => {
       author,
       created,
       toggleSubscriptionPath,
+      state,
+      open,
     } = props;
 
     const EpicShowApp = Vue.extend(epicShowApp);
@@ -41,7 +43,8 @@ describe('EpicShowApp', () => {
     headerVm = mountComponent(EpicHeader, {
       author,
       created,
-      canDelete: canDestroy,
+      open,
+      canUpdate,
     });
 
     const IssuableApp = Vue.extend(issuableApp);
@@ -61,6 +64,7 @@ describe('EpicShowApp', () => {
       projectNamespace: '',
       showInlineEditButton: true,
       toggleSubscriptionPath,
+      state,
     });
 
     setTimeout(done);
@@ -82,13 +86,33 @@ describe('EpicShowApp', () => {
     expect(vm.$el.querySelector('aside.right-sidebar.epic-sidebar')).not.toBe(null);
   });
 
-  it('should emit delete.issuable when epic is deleted', () => {
-    const deleteIssuable = jasmine.createSpy();
-    issuableAppEventHub.$on('delete.issuable', deleteIssuable);
-    spyOn(window, 'confirm').and.returnValue(true);
-    spyOnDependency(issuableApp, 'visitUrl');
+  it('calls `updateStatus` with stateEventType param on service and triggers document events when request is successful', done => {
+    const queryParam = `epic[state_event]=${stateEvent.close}`;
+    mock.onPut(`${vm.endpoint}.json?${encodeURI(queryParam)}`).reply(200, {});
+    spyOn(vm.service, 'updateStatus').and.callThrough();
+    spyOn(vm, 'triggerDocumentEvent');
+
+    vm.toggleEpicStatus(stateEvent.close);
+    setTimeout(() => {
+      expect(vm.service.updateStatus).toHaveBeenCalledWith(stateEvent.close);
+      expect(vm.triggerDocumentEvent).toHaveBeenCalledWith('issuable_vue_app:change', true);
+      expect(vm.triggerDocumentEvent).toHaveBeenCalledWith('issuable:change', true);
+      done();
+    }, 0);
+  });
+
+  it('calls `updateStatus` with stateEventType param on service and shows flash error and triggers document events when request is failed', done => {
+    const queryParam = `epic[state_event]=${stateEvent.close}`;
+    mock.onPut(`${vm.endpoint}.json?${encodeURI(queryParam)}`).reply(500, {});
+    spyOn(vm.service, 'updateStatus').and.callThrough();
+    spyOn(vm, 'triggerDocumentEvent');
 
-    vm.$el.querySelector('.detail-page-header .btn-remove').click();
-    expect(deleteIssuable).toHaveBeenCalled();
+    vm.toggleEpicStatus(stateEvent.close);
+    setTimeout(() => {
+      expect(vm.service.updateStatus).toHaveBeenCalledWith(stateEvent.close);
+      expect(vm.triggerDocumentEvent).toHaveBeenCalledWith('issuable_vue_app:change', false);
+      expect(vm.triggerDocumentEvent).toHaveBeenCalledWith('issuable:change', false);
+      done();
+    }, 0);
   });
 });

ee/spec/javascripts/epics/epic_show/mock_data.js

@@ -29,7 +29,7 @@ export const mockParticipants = [
 
 export const contentProps = {
   epicId: 1,
-  endpoint: '',
+  endpoint: gl.TEST_HOST,
   toggleSubscriptionPath: gl.TEST_HOST,
   updateEndpoint: gl.TEST_HOST,
   todoPath: gl.TEST_HOST,
@@ -62,6 +62,7 @@ export const contentProps = {
   participants: mockParticipants,
   subscribed: true,
   todoExists: false,
+  state: 'opened',
 };
 
 export const headerProps = {
@@ -72,6 +73,9 @@ export const headerProps = {
     name: 'Administrator',
   },
   created: (new Date()).toISOString(),
+  open: true,
+  canUpdate: true,
+  canDelete: true,
 };
 
 export const mockDatePickerProps = {

ee/spec/models/epic_spec.rb

@@ -439,6 +439,35 @@ describe Epic do
     end
   end
 
+  describe '#close' do
+    subject(:epic) { create(:epic, state: 'opened') }
+
+    it 'sets closed_at to Time.now when an epic is closed' do
+      expect { epic.close }.to change { epic.closed_at }.from(nil)
+    end
+
+    it 'changes the state to closed' do
+      expect { epic.close }.to change { epic.state }.from('opened').to('closed')
+    end
+  end
+
+  describe '#reopen' do
+    let(:user) { create(:user) }
+    subject(:epic) { create(:epic, state: 'closed', closed_at: Time.now, closed_by: user) }
+
+    it 'sets closed_at to nil when an epic is reopend' do
+      expect { epic.reopen }.to change { epic.closed_at }.to(nil)
+    end
+
+    it 'sets closed_by to nil when an epic is reopend' do
+      expect { epic.reopen }.to change { epic.closed_by }.from(user).to(nil)
+    end
+
+    it 'changes the state to opened' do
+      expect { epic.reopen }.to change { epic.state }.from('closed').to('opened')
+    end
+  end
+
   describe '#to_reference' do
     let(:group) { create(:group, path: 'group-a') }
     let(:epic) { create(:epic, iid: 1, group: group) }

ee/spec/requests/api/epics_spec.rb

@@ -269,7 +269,15 @@ describe API::Epics do
 
   describe 'PUT /groups/:id/epics/:epic_iid' do
     let(:url) { "/groups/#{group.path}/epics/#{epic.iid}" }
-    let(:params) { { title: 'new title', description: 'new description', labels: 'label2', start_date_fixed: "2018-07-17", start_date_is_fixed: true } }
+    let(:params) do
+      {
+        title: 'new title',
+        description: 'new description',
+        labels: 'label2',
+        start_date_fixed: "2018-07-17",
+        start_date_is_fixed: true
+      }
+    end
 
     it_behaves_like 'error requests'
 
@@ -299,7 +307,10 @@ describe API::Epics do
       context 'when the request is correct' do
         before do
           group.add_developer(user)
+        end
 
+        context 'with basic params' do
+          before do
             put api(url, user), params
           end
 
@@ -323,14 +334,34 @@ describe API::Epics do
             expect(result.due_date_fixed).to eq(nil)
             expect(result.due_date_is_fixed).to be_falsey
           end
+        end
+
+        context 'when state_event is close' do
+          it 'allows epic to be closed' do
+            put api(url, user), state_event: 'close'
+
+            expect(epic.reload).to be_closed
+          end
+        end
+
+        context 'when state_event is reopen' do
+          it 'allows epic to be reopend' do
+            epic.update!(state: 'closed')
+
+            put api(url, user), state_event: 'reopen'
+
+            expect(epic.reload).to be_opened
+          end
+        end
 
         context 'when deprecated start_date and end_date params are present' do
           let(:epic) { create(:epic, :use_fixed_dates, group: group) }
           let(:new_start_date) { epic.start_date + 1.day }
           let(:new_due_date) { epic.end_date + 1.day }
-          let!(:params) { { start_date: new_start_date, end_date: new_due_date } }
 
           it 'updates start_date_fixed and due_date_fixed' do
+            put api(url, user), start_date: new_start_date, end_date: new_due_date
+
             result = epic.reload
 
             expect(result.start_date_fixed).to eq(new_start_date)
@@ -342,9 +373,10 @@ describe API::Epics do
           let(:epic) { create(:epic, :use_fixed_dates, group: group) }
           let(:new_start_date) { epic.start_date + 1.day }
           let(:new_due_date) { epic.end_date + 1.day }
-          let!(:params) { { start_date_is_fixed: false } }
 
           it 'updates start_date_is_fixed' do
+            put api(url, user), start_date_is_fixed: false
+
             result = epic.reload
 
             expect(result.start_date_is_fixed).to eq(false)

ee/spec/services/ee/notes/quick_actions_service_spec.rb

@@ -109,4 +109,65 @@ describe Notes::QuickActionsService do
       end
     end
   end
+
+  describe 'Epics' do
+    describe '/close' do
+      let(:note_text) { "/close" }
+      let(:note) { create(:note, noteable: epic, note: note_text) }
+
+      before do
+        group.add_developer(user)
+      end
+
+      context 'when epics are not enabled' do
+        it 'does not close the epic' do
+          expect { execute(note) }.not_to change { epic.state }
+        end
+      end
+
+      context 'when epics are enabled' do
+        before do
+          stub_licensed_features(epics: true)
+        end
+
+        it 'closes the epic' do
+          expect { execute(note) }.to change { epic.reload.state }.from('opened').to('closed')
+        end
+
+        it 'leaves the note empty' do
+          expect(execute(note)).to eq('')
+        end
+      end
+    end
+
+    describe '/reopen' do
+      let(:note_text) { "/reopen" }
+      let(:note) { create(:note, noteable: epic, note: note_text) }
+
+      before do
+        group.add_developer(user)
+        epic.update!(state: 'closed')
+      end
+
+      context 'when epics are not enabled' do
+        it 'does not reopen the epic' do
+          expect { execute(note) }.not_to change { epic.state }
+        end
+      end
+
+      context 'when epics are enabled' do
+        before do
+          stub_licensed_features(epics: true)
+        end
+
+        it 'reopens the epic' do
+          expect { execute(note) }.to change { epic.reload.state }.from('closed').to('opened')
+        end
+
+        it 'leaves the note empty' do
+          expect(execute(note)).to eq('')
+        end
+      end
+    end
+  end
 end

ee/spec/services/epics/close_service_spec.rb

+# frozen_string_literal: true
+require 'spec_helper'
+
+describe Epics::CloseService do
+  let(:group) { create(:group, :internal) }
+  let(:user) { create(:user) }
+  let(:epic) { create(:epic, group: group) }
+
+  describe '#execute' do
+    subject { described_class.new(group, user) }
+
+    context 'when epics are disabled' do
+      before do
+        group.add_master(user)
+      end
+
+      it 'does not close the epic' do
+        expect { subject.execute(epic) }.not_to change { epic.state }
+      end
+    end
+
+    context 'when epics are enabled' do
+      before do
+        stub_licensed_features(epics: true)
+      end
+
+      context 'when a user has permissions to update the epic' do
+        before do
+          group.add_master(user)
+        end
+
+        context 'when closing an opened epic' do
+          it 'closes the epic' do
+            expect { subject.execute(epic) }.to change { epic.state }.from('opened').to('closed')
+          end
+
+          it 'changes closed_by' do
+            expect { subject.execute(epic) }.to change { epic.closed_by }.to(user)
+          end
+
+          it 'changes closed_at' do
+            expect { subject.execute(epic) }.to change { epic.closed_at }
+          end
+        end
+
+        context 'when trying to close a closed epic' do
+          before do
+            epic.update(state: :closed)
+          end
+
+          it 'does not change the epic state' do
+            expect { subject.execute(epic) }.not_to change { epic.state }
+          end
+
+          it 'does not change closed_at' do
+            expect { subject.execute(epic) }.not_to change { epic.closed_at }
+          end
+
+          it 'does not change closed_by' do
+            expect { subject.execute(epic) }.not_to change { epic.closed_by }
+          end
+        end
+      end
+
+      context 'when a user does not have permissions to update epic' do
+        it 'does not close the epic' do
+          expect { subject.execute(epic) }.not_to change { epic.state }
+        end
+      end
+    end
+  end
+end

ee/spec/services/epics/reopen_service_spec.rb

+# frozen_string_literal: true
+require 'spec_helper'
+
+describe Epics::ReopenService do
+  let(:group) { create(:group, :internal) }
+  let(:user) { create(:user) }
+  let(:epic) { create(:epic, group: group, state: :closed, closed_at: Date.today, closed_by: user) }
+
+  describe '#execute' do
+    subject { described_class.new(group, user) }
+
+    context 'when epics are disabled' do
+      before do
+        group.add_master(user)
+      end
+
+      it 'does not reopen the epic' do
+        expect { subject.execute(epic) }.not_to change { epic.state }
+      end
+    end
+
+    context 'when epics are enabled' do
+      before do
+        stub_licensed_features(epics: true)
+      end
+
+      context 'when a user has permissions to update the epic' do
+        before do
+          group.add_master(user)
+        end
+
+        context 'when reopening a closed epic' do
+          it 'reopens the epic' do
+            expect { subject.execute(epic) }.to change { epic.state }.from('closed').to('opened')
+          end
+
+          it 'removes closed_by' do
+            expect { subject.execute(epic) }.to change { epic.closed_by }.to(nil)
+          end
+
+          it 'removes closed_at' do
+            expect { subject.execute(epic) }.to change { epic.closed_at }.to(nil)
+          end
+        end
+
+        context 'when trying to reopen an opened epic' do
+          before do
+            epic.update(state: :opened)
+          end
+
+          it 'does not change the epic state' do
+            expect { subject.execute(epic) }.not_to change { epic.state }
+          end
+
+          it 'does not change closed_at' do
+            expect { subject.execute(epic) }.not_to change { epic.closed_at }
+          end
+
+          it 'does not change closed_by' do
+            expect { subject.execute(epic) }.not_to change { epic.closed_by }
+          end
+        end
+      end
+
+      context 'when a user does not have permissions to update epic' do
+        it 'does not reopen the epic' do
+          expect { subject.execute(epic) }.not_to change { epic.state }
+        end
+      end
+    end
+  end
+end

ee/spec/services/epics/update_service_spec.rb

 require 'spec_helper'
 
 describe Epics::UpdateService do
-  let(:group) { create(:group, :internal)}
+  let(:group) { create(:group, :internal) }
   let(:user) { create(:user) }
   let(:epic) { create(:epic, group: group) }
 
   describe '#execute' do
     before do
       stub_licensed_features(epics: true)
+      group.add_master(user)
     end
+
     def update_epic(opts)
       described_class.new(group, user, opts).execute(epic)
     end
@@ -21,7 +23,8 @@ describe Epics::UpdateService do
           start_date_fixed: '2017-01-09',
           start_date_is_fixed: true,
           due_date_fixed: '2017-10-21',
-          due_date_is_fixed: true
+          due_date_is_fixed: true,
+          state_event: 'close'
         }
       end
 
@@ -34,6 +37,7 @@ describe Epics::UpdateService do
           start_date_fixed: Date.strptime(opts[:start_date_fixed]),
           due_date_fixed: Date.strptime(opts[:due_date_fixed])
         )
+        expect(epic).to be_closed
       end
 
       it 'updates the last_edited_at value' do

locale/gitlab.pot

@@ -125,6 +125,9 @@ msgstr ""
 msgid "%{group_docs_link_start}Groups%{group_docs_link_end} allow you to manage and collaborate across multiple projects. Members of a group have access to all of its projects."
 msgstr ""
 
+msgid "%{issuableType} will be removed! Are you sure?"
+msgstr ""
+
 msgid "%{loadingIcon} Started"
 msgstr ""
 
@@ -1589,6 +1592,9 @@ msgstr ""
 msgid "Close"
 msgstr ""
 
+msgid "Close epic"
+msgstr ""
+
 msgid "Closed"
 msgstr ""
 
@@ -4161,6 +4167,9 @@ msgstr ""
 msgid "Invite"
 msgstr ""
 
+msgid "Issue"
+msgstr ""
+
 msgid "Issue Boards"
 msgstr ""
 
@@ -6295,6 +6304,9 @@ msgstr ""
 msgid "Rename folder"
 msgstr ""
 
+msgid "Reopen epic"
+msgstr ""
+
 msgid "Repair authentication"
 msgstr ""
 
@@ -7963,6 +7975,9 @@ msgstr ""
 msgid "Unable to sign you in to the group with SAML due to \"%{reason}\""
 msgstr ""
 
+msgid "Unable to update this epic at this time."
+msgstr ""
+
 msgid "Undo"
 msgstr ""
 

spec/javascripts/issue_show/components/edit_actions_spec.js

@@ -21,6 +21,7 @@ describe('Edit Actions components', () => {
       propsData: {
         canDestroy: true,
         formState: store.formState,
+        issuableType: 'issue',
       },
     }).$mount();
 

spec/javascripts/issue_show/components/form_spec.js

@@ -15,6 +15,7 @@ describe('Inline edit form component', () => {
           description: 'a',
           lockedWarningVisible: false,
         },
+        issuableType: 'issue',
         markdownPreviewPath: '/',
         markdownDocsPath: '/',
         projectPath: '/',

spec/migrations/delete_inconsistent_internal_id_records_spec.rb

@@ -122,13 +122,27 @@ describe DeleteInconsistentInternalIdRecords, :migration do
     let!(:group1) { create(:group) }
     let!(:group2) { create(:group) }
     let!(:group3) { create(:group) }
+    let!(:user)   { create(:user) }
 
     let(:internal_id_query) { ->(group) { InternalId.where(usage: InternalId.usages['epics'], namespace: group) } }
 
     before do
-      create_list(:epic, 3, group: group1)
-      create_list(:epic, 3, group: group2)
-      create_list(:epic, 3, group: group3)
+      # we use state enum in Epic but state field was added after this migration
+      epics = table(:epics)
+
+      epics.belongs_to(:group)
+      epics.include(AtomicInternalId)
+      epics.has_internal_id(:iid, scope: :group, init: ->(s) { s&.group&.epics&.maximum(:iid) })
+
+      epics.create!(title: 'Epic 1', title_html: 'Epic 1', group_id: group1.id, author_id: user.id)
+      epics.create!(title: 'Epic 2', title_html: 'Epic 2', group_id: group1.id, author_id: user.id)
+      epics.create!(title: 'Epic 3', title_html: 'Epic 3', group_id: group1.id, author_id: user.id)
+      epics.create!(title: 'Epic 4', title_html: 'Epic 4', group_id: group2.id, author_id: user.id)
+      epics.create!(title: 'Epic 5', title_html: 'Epic 5', group_id: group2.id, author_id: user.id)
+      epics.create!(title: 'Epic 6', title_html: 'Epic 6', group_id: group2.id, author_id: user.id)
+      epics.create!(title: 'Epic 7', title_html: 'Epic 7', group_id: group3.id, author_id: user.id)
+      epics.create!(title: 'Epic 8', title_html: 'Epic 8', group_id: group3.id, author_id: user.id)
+      epics.create!(title: 'Epic 9', title_html: 'Epic 9', group_id: group3.id, author_id: user.id)
 
       internal_id_query.call(group1).first.tap do |iid|
         iid.last_value = iid.last_value - 2

spec/models/issue_spec.rb

@@ -84,15 +84,32 @@ describe Issue do
     end
   end
 
-  describe '#closed_at' do
-    it 'sets closed_at to Time.now when issue is closed' do
-      issue = create(:issue, state: 'opened')
+  describe '#close' do
+    subject(:issue) { create(:issue, state: 'opened') }
 
-      expect(issue.closed_at).to be_nil
+    it 'sets closed_at to Time.now when an issue is closed' do
+      expect { issue.close }.to change { issue.closed_at }.from(nil)
+    end
 
-      issue.close
+    it 'changes the state to closed' do
+      expect { issue.close }.to change { issue.state }.from('opened').to('closed')
+    end
+  end
+
+  describe '#reopen' do
+    let(:user) { create(:user) }
+    let(:issue) { create(:issue, state: 'closed', closed_at: Time.now, closed_by: user) }
+
+    it 'sets closed_at to nil when an issue is reopend' do
+      expect { issue.reopen }.to change { issue.closed_at }.to(nil)
+    end
+
+    it 'sets closed_by to nil when an issue is reopend' do
+      expect { issue.reopen }.to change { issue.closed_by }.from(user).to(nil)
+    end
 
-      expect(issue.closed_at).to be_present
+    it 'changes the state to opened' do
+      expect { issue.reopen }.to change { issue.state }.from('closed').to('opened')
     end
   end
 

spec/support/helpers/migrations_helpers.rb

@@ -9,6 +9,10 @@ module MigrationsHelpers
     Class.new(active_record_base) do
       self.table_name = name
       self.inheritance_column = :_type_disabled
+
+      def self.name
+        table_name.singularize.camelcase
+      end
     end
   end