CE - FE fix diffs specs leaking store

- Export mr_notes module as function
- Update specs refs of mr_notes/stores to factory

EE MR: https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/15097

app/assets/javascripts/mr_notes/stores/index.js

@@ -9,7 +9,7 @@ Vue.use(Vuex);
 export const createStore = () =>
   new Vuex.Store({
     modules: {
-      page: mrPageModule,
+      page: mrPageModule(),
       notes: notesModule(),
       diffs: diffsModule(),
     },

app/assets/javascripts/mr_notes/stores/modules/index.js

@@ -2,11 +2,11 @@ import actions from '../actions';
 import getters from '../getters';
 import mutations from '../mutations';
 
-export default {
+export default () => ({
   state: {
     activeTab: null,
   },
   actions,
   getters,
   mutations,
-};
+});

spec/javascripts/diffs/components/compare_versions_spec.js

 import Vue from 'vue';
 import CompareVersionsComponent from '~/diffs/components/compare_versions.vue';
-import store from '~/mr_notes/stores';
+import { createStore } from '~/mr_notes/stores';
 import { createComponentWithStore } from 'spec/helpers/vue_mount_component_helper';
 import diffsMockData from '../mock_data/merge_request_diffs';
 import getDiffWithCommit from '../mock_data/diff_with_commit';
@@ -10,6 +10,8 @@ describe('CompareVersions', () => {
   const targetBranch = { branchName: 'tmp-wine-dev', versionIndex: -1 };
 
   beforeEach(() => {
+    const store = createStore();
+
     store.state.diffs.addedLines = 10;
     store.state.diffs.removedLines = 20;
     store.state.diffs.diffFiles.push('test');

spec/javascripts/diffs/components/diff_expansion_cell_spec.js

 import Vue from 'vue';
-import store from '~/mr_notes/stores';
+import { createStore } from '~/mr_notes/stores';
 import DiffExpansionCell from '~/diffs/components/diff_expansion_cell.vue';
 import { createComponentWithStore } from 'spec/helpers/vue_mount_component_helper';
 import diffFileMockData from '../mock_data/diff_file';
@@ -22,7 +22,7 @@ describe('DiffExpansionCell', () => {
     };
     const props = Object.assign({}, defaults, options);
 
-    return createComponentWithStore(cmp, store, props).$mount();
+    return createComponentWithStore(cmp, createStore(), props).$mount();
   };
 
   describe('top row', () => {

spec/javascripts/diffs/components/diff_file_spec.js

 import Vue from 'vue';
 import DiffFileComponent from '~/diffs/components/diff_file.vue';
 import { diffViewerModes, diffViewerErrors } from '~/ide/constants';
-import store from 'ee_else_ce/mr_notes/stores';
+import { createStore } from 'ee_else_ce/mr_notes/stores';
 import { createComponentWithStore } from 'spec/helpers/vue_mount_component_helper';
 import diffFileMockData from '../mock_data/diff_file';
 
@@ -9,7 +9,7 @@ describe('DiffFile', () => {
   let vm;
 
   beforeEach(() => {
-    vm = createComponentWithStore(Vue.extend(DiffFileComponent), store, {
+    vm = createComponentWithStore(Vue.extend(DiffFileComponent), createStore(), {
       file: JSON.parse(JSON.stringify(diffFileMockData)),
       canCurrentUserFork: false,
     }).$mount();
@@ -36,7 +36,7 @@ describe('DiffFile', () => {
 
       vm.$nextTick()
         .then(() => {
-          expect(el.querySelectorAll('.line_content').length).toBeGreaterThanOrEqual(5);
+          expect(el.querySelectorAll('.line_content').length).toBe(5);
           expect(el.querySelectorAll('.js-line-expansion-content').length).toBe(1);
         })
         .then(done)

spec/javascripts/diffs/components/diff_line_gutter_content_spec.js

 import Vue from 'vue';
 import DiffLineGutterContent from '~/diffs/components/diff_line_gutter_content.vue';
-import store from '~/mr_notes/stores';
+import { createStore } from '~/mr_notes/stores';
 import { createComponentWithStore } from 'spec/helpers/vue_mount_component_helper';
 import discussionsMockData from '../mock_data/diff_discussions';
 import diffFileMockData from '../mock_data/diff_file';
@@ -23,7 +23,7 @@ describe('DiffLineGutterContent', () => {
     props.fileHash = getDiffFileMock().file_hash;
     props.contextLinesPath = '/context/lines/path';
 
-    return createComponentWithStore(cmp, store, props).$mount();
+    return createComponentWithStore(cmp, createStore(), props).$mount();
   };
 
   describe('computed', () => {
@@ -61,7 +61,7 @@ describe('DiffLineGutterContent', () => {
           contextLinesPath: '/context/lines/path',
         };
         props.line.discussions = [Object.assign({}, discussionsMockData)];
-        const component = createComponentWithStore(cmp, store, props).$mount();
+        const component = createComponentWithStore(cmp, createStore(), props).$mount();
 
         expect(component.hasDiscussions).toEqual(true);
         expect(component.shouldShowAvatarsOnGutter).toEqual(true);

spec/javascripts/diffs/components/diff_line_note_form_spec.js

 import Vue from 'vue';
 import DiffLineNoteForm from '~/diffs/components/diff_line_note_form.vue';
-import store from '~/mr_notes/stores';
+import { createStore } from '~/mr_notes/stores';
 import { createComponentWithStore } from 'spec/helpers/vue_mount_component_helper';
 import diffFileMockData from '../mock_data/diff_file';
 import { noteableDataMock } from '../../notes/mock_data';
@@ -15,7 +15,7 @@ describe('DiffLineNoteForm', () => {
     diffFile = getDiffFileMock();
     diffLines = diffFile.highlighted_diff_lines;
 
-    component = createComponentWithStore(Vue.extend(DiffLineNoteForm), store, {
+    component = createComponentWithStore(Vue.extend(DiffLineNoteForm), createStore(), {
       diffFileHash: diffFile.file_hash,
       diffLines,
       line: diffLines[0],

spec/javascripts/diffs/components/diff_table_cell_spec.js

 import Vue from 'vue';
-import store from '~/mr_notes/stores';
+import { createStore } from '~/mr_notes/stores';
 import DiffTableCell from '~/diffs/components/diff_table_cell.vue';
 import { createComponentWithStore } from 'spec/helpers/vue_mount_component_helper';
 import diffFileMockData from '../mock_data/diff_file';
 
 describe('DiffTableCell', () => {
   const createComponent = options =>
-    createComponentWithStore(Vue.extend(DiffTableCell), store, {
+    createComponentWithStore(Vue.extend(DiffTableCell), createStore(), {
       line: diffFileMockData.highlighted_diff_lines[0],
       fileHash: diffFileMockData.file_hash,
       contextLinesPath: 'contextLinesPath',

spec/javascripts/diffs/components/inline_diff_expansion_row_spec.js

 import Vue from 'vue';
-import store from '~/mr_notes/stores';
+import { createStore } from '~/mr_notes/stores';
 import InlineDiffExpansionRow from '~/diffs/components/inline_diff_expansion_row.vue';
 import { createComponentWithStore } from 'spec/helpers/vue_mount_component_helper';
 import diffFileMockData from '../mock_data/diff_file';
@@ -18,7 +18,7 @@ describe('InlineDiffExpansionRow', () => {
     };
     const props = Object.assign({}, defaults, options);
 
-    return createComponentWithStore(cmp, store, props).$mount();
+    return createComponentWithStore(cmp, createStore(), props).$mount();
   };
 
   describe('template', () => {

spec/javascripts/diffs/components/inline_diff_table_row_spec.js

 import Vue from 'vue';
-import store from '~/mr_notes/stores';
+import { createStore } from '~/mr_notes/stores';
 import InlineDiffTableRow from '~/diffs/components/inline_diff_table_row.vue';
 import { createComponentWithStore } from 'spec/helpers/vue_mount_component_helper';
 import diffFileMockData from '../mock_data/diff_file';
@@ -9,7 +9,7 @@ describe('InlineDiffTableRow', () => {
   const thisLine = diffFileMockData.highlighted_diff_lines[0];
 
   beforeEach(() => {
-    vm = createComponentWithStore(Vue.extend(InlineDiffTableRow), store, {
+    vm = createComponentWithStore(Vue.extend(InlineDiffTableRow), createStore(), {
       line: thisLine,
       fileHash: diffFileMockData.file_hash,
       contextLinesPath: 'contextLinesPath',

spec/javascripts/diffs/components/inline_diff_view_spec.js

 import Vue from 'vue';
 import '~/behaviors/markdown/render_gfm';
 import InlineDiffView from '~/diffs/components/inline_diff_view.vue';
-import store from 'ee_else_ce/mr_notes/stores';
+import { createStore } from 'ee_else_ce/mr_notes/stores';
 import { createComponentWithStore } from 'spec/helpers/vue_mount_component_helper';
 import diffFileMockData from '../mock_data/diff_file';
 import discussionsMockData from '../mock_data/diff_discussions';
@@ -15,6 +15,8 @@ describe('InlineDiffView', () => {
   beforeEach(done => {
     const diffFile = getDiffFileMock();
 
+    const store = createStore();
+
     store.dispatch('diffs/setInlineDiffViewType');
     component = createComponentWithStore(Vue.extend(InlineDiffView), store, {
       diffFile,

spec/javascripts/diffs/components/parallel_diff_expansion_row_spec.js

 import Vue from 'vue';
-import store from '~/mr_notes/stores';
+import { createStore } from '~/mr_notes/stores';
 import ParallelDiffExpansionRow from '~/diffs/components/parallel_diff_expansion_row.vue';
 import { createComponentWithStore } from 'spec/helpers/vue_mount_component_helper';
 import diffFileMockData from '../mock_data/diff_file';
@@ -18,7 +18,7 @@ describe('ParallelDiffExpansionRow', () => {
     };
     const props = Object.assign({}, defaults, options);
 
-    return createComponentWithStore(cmp, store, props).$mount();
+    return createComponentWithStore(cmp, createStore(), props).$mount();
   };
 
   describe('template', () => {

spec/javascripts/diffs/components/parallel_diff_view_spec.js

 import Vue from 'vue';
 import ParallelDiffView from '~/diffs/components/parallel_diff_view.vue';
-import store from 'ee_else_ce/mr_notes/stores';
+import { createStore } from 'ee_else_ce/mr_notes/stores';
 import * as constants from '~/diffs/constants';
 import { createComponentWithStore } from 'spec/helpers/vue_mount_component_helper';
 import diffFileMockData from '../mock_data/diff_file';
@@ -12,7 +12,7 @@ describe('ParallelDiffView', () => {
   beforeEach(() => {
     const diffFile = getDiffFileMock();
 
-    component = createComponentWithStore(Vue.extend(ParallelDiffView), store, {
+    component = createComponentWithStore(Vue.extend(ParallelDiffView), createStore(), {
       diffFile,
       diffLines: diffFile.parallel_diff_lines,
     }).$mount();