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-rw-r--r--spec/frontend/diffs/components/app_spec.js723
-rw-r--r--spec/frontend/diffs/create_diffs_store.js15
2 files changed, 738 insertions, 0 deletions
diff --git a/spec/frontend/diffs/components/app_spec.js b/spec/frontend/diffs/components/app_spec.js
new file mode 100644
index 00000000000..15f91871437
--- /dev/null
+++ b/spec/frontend/diffs/components/app_spec.js
@@ -0,0 +1,723 @@
+import Vuex from 'vuex';
+import { shallowMount, createLocalVue } from '@vue/test-utils';
+import { GlLoadingIcon } from '@gitlab/ui';
+import MockAdapter from 'axios-mock-adapter';
+import { TEST_HOST } from 'spec/test_constants';
+import Mousetrap from 'mousetrap';
+import App from '~/diffs/components/app.vue';
+import NoChanges from '~/diffs/components/no_changes.vue';
+import DiffFile from '~/diffs/components/diff_file.vue';
+import CompareVersions from '~/diffs/components/compare_versions.vue';
+import HiddenFilesWarning from '~/diffs/components/hidden_files_warning.vue';
+import CommitWidget from '~/diffs/components/commit_widget.vue';
+import TreeList from '~/diffs/components/tree_list.vue';
+import { INLINE_DIFF_VIEW_TYPE, PARALLEL_DIFF_VIEW_TYPE } from '~/diffs/constants';
+import createDiffsStore from '../create_diffs_store';
+import axios from '~/lib/utils/axios_utils';
+import diffsMockData from '../mock_data/merge_request_diffs';
+
+const mergeRequestDiff = { version_index: 1 };
+const TEST_ENDPOINT = `${TEST_HOST}/diff/endpoint`;
+
+describe('diffs/components/app', () => {
+ const oldMrTabs = window.mrTabs;
+ let store;
+ let wrapper;
+ let mock;
+
+ function createComponent(props = {}, extendStore = () => {}) {
+ const localVue = createLocalVue();
+
+ localVue.use(Vuex);
+
+ store = createDiffsStore();
+ store.state.diffs.isLoading = false;
+
+ extendStore(store);
+
+ wrapper = shallowMount(localVue.extend(App), {
+ localVue,
+ propsData: {
+ endpoint: TEST_ENDPOINT,
+ endpointMetadata: `${TEST_HOST}/diff/endpointMetadata`,
+ endpointBatch: `${TEST_HOST}/diff/endpointBatch`,
+ projectPath: 'namespace/project',
+ currentUser: {},
+ changesEmptyStateIllustration: '',
+ dismissEndpoint: '',
+ showSuggestPopover: true,
+ ...props,
+ },
+ store,
+ methods: {
+ isLatestVersion() {
+ return true;
+ },
+ },
+ });
+ }
+
+ function getOppositeViewType(currentViewType) {
+ return currentViewType === INLINE_DIFF_VIEW_TYPE
+ ? PARALLEL_DIFF_VIEW_TYPE
+ : INLINE_DIFF_VIEW_TYPE;
+ }
+
+ beforeEach(() => {
+ // setup globals (needed for component to mount :/)
+ window.mrTabs = {
+ resetViewContainer: jest.fn(),
+ };
+ window.mrTabs.expandViewContainer = jest.fn();
+ mock = new MockAdapter(axios);
+ mock.onGet(TEST_ENDPOINT).reply(200, {});
+ });
+
+ afterEach(() => {
+ // reset globals
+ window.mrTabs = oldMrTabs;
+
+ // reset component
+ wrapper.destroy();
+
+ mock.restore();
+ });
+
+ describe('fetch diff methods', () => {
+ beforeEach(done => {
+ const fetchResolver = () => {
+ store.state.diffs.retrievingBatches = false;
+ store.state.notes.discussions = 'test';
+ return Promise.resolve({ real_size: 100 });
+ };
+ jest.spyOn(window, 'requestIdleCallback').mockImplementation(fn => fn());
+ createComponent();
+ jest.spyOn(wrapper.vm, 'fetchDiffFiles').mockImplementation(fetchResolver);
+ jest.spyOn(wrapper.vm, 'fetchDiffFilesMeta').mockImplementation(fetchResolver);
+ jest.spyOn(wrapper.vm, 'fetchDiffFilesBatch').mockImplementation(fetchResolver);
+ jest.spyOn(wrapper.vm, 'setDiscussions').mockImplementation(() => {});
+ jest.spyOn(wrapper.vm, 'startRenderDiffsQueue').mockImplementation(() => {});
+ jest.spyOn(wrapper.vm, 'unwatchDiscussions').mockImplementation(() => {});
+ jest.spyOn(wrapper.vm, 'unwatchRetrievingBatches').mockImplementation(() => {});
+ store.state.diffs.retrievingBatches = true;
+ store.state.diffs.diffFiles = [];
+ wrapper.vm.$nextTick(done);
+ });
+
+ describe('when the diff view type changes and it should load a single diff view style', () => {
+ const noLinesDiff = {
+ highlighted_diff_lines: [],
+ parallel_diff_lines: [],
+ };
+ const parallelLinesDiff = {
+ highlighted_diff_lines: [],
+ parallel_diff_lines: ['line'],
+ };
+ const inlineLinesDiff = {
+ highlighted_diff_lines: ['line'],
+ parallel_diff_lines: [],
+ };
+ const fullDiff = {
+ highlighted_diff_lines: ['line'],
+ parallel_diff_lines: ['line'],
+ };
+
+ function expectFetchToOccur({
+ vueInstance,
+ done = () => {},
+ batch = false,
+ existingFiles = 1,
+ } = {}) {
+ vueInstance.$nextTick(() => {
+ expect(vueInstance.diffFiles.length).toEqual(existingFiles);
+
+ if (!batch) {
+ expect(vueInstance.fetchDiffFiles).toHaveBeenCalled();
+ expect(vueInstance.fetchDiffFilesBatch).not.toHaveBeenCalled();
+ } else {
+ expect(vueInstance.fetchDiffFiles).not.toHaveBeenCalled();
+ expect(vueInstance.fetchDiffFilesBatch).toHaveBeenCalled();
+ }
+
+ done();
+ });
+ }
+
+ beforeEach(() => {
+ wrapper.vm.glFeatures.singleMrDiffView = true;
+ });
+
+ it('fetches diffs if it has none', done => {
+ wrapper.vm.isLatestVersion = () => false;
+
+ store.state.diffs.diffViewType = getOppositeViewType(wrapper.vm.diffViewType);
+
+ expectFetchToOccur({ vueInstance: wrapper.vm, batch: false, existingFiles: 0, done });
+ });
+
+ it('fetches diffs if it has both view styles, but no lines in either', done => {
+ wrapper.vm.isLatestVersion = () => false;
+
+ store.state.diffs.diffFiles.push(noLinesDiff);
+ store.state.diffs.diffViewType = getOppositeViewType(wrapper.vm.diffViewType);
+
+ expectFetchToOccur({ vueInstance: wrapper.vm, done });
+ });
+
+ it('fetches diffs if it only has inline view style', done => {
+ wrapper.vm.isLatestVersion = () => false;
+
+ store.state.diffs.diffFiles.push(inlineLinesDiff);
+ store.state.diffs.diffViewType = getOppositeViewType(wrapper.vm.diffViewType);
+
+ expectFetchToOccur({ vueInstance: wrapper.vm, done });
+ });
+
+ it('fetches diffs if it only has parallel view style', done => {
+ wrapper.vm.isLatestVersion = () => false;
+
+ store.state.diffs.diffFiles.push(parallelLinesDiff);
+ store.state.diffs.diffViewType = getOppositeViewType(wrapper.vm.diffViewType);
+
+ expectFetchToOccur({ vueInstance: wrapper.vm, done });
+ });
+
+ it('fetches batch diffs if it has none', done => {
+ wrapper.vm.glFeatures.diffsBatchLoad = true;
+
+ store.state.diffs.diffViewType = getOppositeViewType(wrapper.vm.diffViewType);
+
+ expectFetchToOccur({ vueInstance: wrapper.vm, batch: true, existingFiles: 0, done });
+ });
+
+ it('fetches batch diffs if it has both view styles, but no lines in either', done => {
+ wrapper.vm.glFeatures.diffsBatchLoad = true;
+
+ store.state.diffs.diffFiles.push(noLinesDiff);
+ store.state.diffs.diffViewType = getOppositeViewType(wrapper.vm.diffViewType);
+
+ expectFetchToOccur({ vueInstance: wrapper.vm, batch: true, done });
+ });
+
+ it('fetches batch diffs if it only has inline view style', done => {
+ wrapper.vm.glFeatures.diffsBatchLoad = true;
+
+ store.state.diffs.diffFiles.push(inlineLinesDiff);
+ store.state.diffs.diffViewType = getOppositeViewType(wrapper.vm.diffViewType);
+
+ expectFetchToOccur({ vueInstance: wrapper.vm, batch: true, done });
+ });
+
+ it('fetches batch diffs if it only has parallel view style', done => {
+ wrapper.vm.glFeatures.diffsBatchLoad = true;
+
+ store.state.diffs.diffFiles.push(parallelLinesDiff);
+ store.state.diffs.diffViewType = getOppositeViewType(wrapper.vm.diffViewType);
+
+ expectFetchToOccur({ vueInstance: wrapper.vm, batch: true, done });
+ });
+
+ it('does not fetch diffs if it has already fetched both styles of diff', () => {
+ wrapper.vm.glFeatures.diffsBatchLoad = false;
+
+ store.state.diffs.diffFiles.push(fullDiff);
+ store.state.diffs.diffViewType = getOppositeViewType(wrapper.vm.diffViewType);
+
+ expect(wrapper.vm.diffFiles.length).toEqual(1);
+ expect(wrapper.vm.fetchDiffFiles).not.toHaveBeenCalled();
+ expect(wrapper.vm.fetchDiffFilesBatch).not.toHaveBeenCalled();
+ });
+
+ it('does not fetch batch diffs if it has already fetched both styles of diff', () => {
+ wrapper.vm.glFeatures.diffsBatchLoad = true;
+
+ store.state.diffs.diffFiles.push(fullDiff);
+ store.state.diffs.diffViewType = getOppositeViewType(wrapper.vm.diffViewType);
+
+ expect(wrapper.vm.diffFiles.length).toEqual(1);
+ expect(wrapper.vm.fetchDiffFiles).not.toHaveBeenCalled();
+ expect(wrapper.vm.fetchDiffFilesBatch).not.toHaveBeenCalled();
+ });
+ });
+
+ it('calls fetchDiffFiles if diffsBatchLoad is not enabled', done => {
+ expect(wrapper.vm.diffFilesLength).toEqual(0);
+ wrapper.vm.glFeatures.diffsBatchLoad = false;
+ wrapper.vm.fetchData(false);
+
+ expect(wrapper.vm.fetchDiffFiles).toHaveBeenCalled();
+ setImmediate(() => {
+ expect(wrapper.vm.startRenderDiffsQueue).toHaveBeenCalled();
+ expect(wrapper.vm.fetchDiffFilesMeta).not.toHaveBeenCalled();
+ expect(wrapper.vm.fetchDiffFilesBatch).not.toHaveBeenCalled();
+ expect(wrapper.vm.unwatchDiscussions).toHaveBeenCalled();
+ expect(wrapper.vm.diffFilesLength).toEqual(100);
+ expect(wrapper.vm.unwatchRetrievingBatches).toHaveBeenCalled();
+
+ done();
+ });
+ });
+
+ it('calls batch methods if diffsBatchLoad is enabled, and not latest version', done => {
+ expect(wrapper.vm.diffFilesLength).toEqual(0);
+ wrapper.vm.glFeatures.diffsBatchLoad = true;
+ wrapper.vm.isLatestVersion = () => false;
+ wrapper.vm.fetchData(false);
+
+ expect(wrapper.vm.fetchDiffFiles).not.toHaveBeenCalled();
+ setImmediate(() => {
+ expect(wrapper.vm.startRenderDiffsQueue).toHaveBeenCalled();
+ expect(wrapper.vm.fetchDiffFilesMeta).toHaveBeenCalled();
+ expect(wrapper.vm.fetchDiffFilesBatch).toHaveBeenCalled();
+ expect(wrapper.vm.unwatchDiscussions).toHaveBeenCalled();
+ expect(wrapper.vm.diffFilesLength).toEqual(100);
+ expect(wrapper.vm.unwatchRetrievingBatches).toHaveBeenCalled();
+ done();
+ });
+ });
+
+ it('calls batch methods if diffsBatchLoad is enabled, and latest version', done => {
+ expect(wrapper.vm.diffFilesLength).toEqual(0);
+ wrapper.vm.glFeatures.diffsBatchLoad = true;
+ wrapper.vm.fetchData(false);
+
+ expect(wrapper.vm.fetchDiffFiles).not.toHaveBeenCalled();
+ setImmediate(() => {
+ expect(wrapper.vm.startRenderDiffsQueue).toHaveBeenCalled();
+ expect(wrapper.vm.fetchDiffFilesMeta).toHaveBeenCalled();
+ expect(wrapper.vm.fetchDiffFilesBatch).toHaveBeenCalled();
+ expect(wrapper.vm.unwatchDiscussions).toHaveBeenCalled();
+ expect(wrapper.vm.diffFilesLength).toEqual(100);
+ expect(wrapper.vm.unwatchRetrievingBatches).toHaveBeenCalled();
+ done();
+ });
+ });
+ });
+
+ it('adds container-limiting classes when showFileTree is false with inline diffs', () => {
+ createComponent({}, ({ state }) => {
+ state.diffs.showTreeList = false;
+ state.diffs.isParallelView = false;
+ });
+
+ expect(wrapper.contains('.container-limited.limit-container-width')).toBe(true);
+ });
+
+ it('does not add container-limiting classes when showFileTree is false with inline diffs', () => {
+ createComponent({}, ({ state }) => {
+ state.diffs.showTreeList = true;
+ state.diffs.isParallelView = false;
+ });
+
+ expect(wrapper.contains('.container-limited.limit-container-width')).toBe(false);
+ });
+
+ it('does not add container-limiting classes when isFluidLayout', () => {
+ createComponent({ isFluidLayout: true }, ({ state }) => {
+ state.diffs.isParallelView = false;
+ });
+
+ expect(wrapper.contains('.container-limited.limit-container-width')).toBe(false);
+ });
+
+ it('displays loading icon on loading', () => {
+ createComponent({}, ({ state }) => {
+ state.diffs.isLoading = true;
+ });
+
+ expect(wrapper.contains(GlLoadingIcon)).toBe(true);
+ });
+
+ it('displays loading icon on batch loading', () => {
+ createComponent({}, ({ state }) => {
+ state.diffs.isBatchLoading = true;
+ });
+
+ expect(wrapper.contains(GlLoadingIcon)).toBe(true);
+ });
+
+ it('displays diffs container when not loading', () => {
+ createComponent();
+
+ expect(wrapper.contains(GlLoadingIcon)).toBe(false);
+ expect(wrapper.contains('#diffs')).toBe(true);
+ });
+
+ it('does not show commit info', () => {
+ createComponent();
+
+ expect(wrapper.contains('.blob-commit-info')).toBe(false);
+ });
+
+ describe('row highlighting', () => {
+ beforeEach(() => {
+ window.location.hash = 'ABC_123';
+ });
+
+ it('sets highlighted row if hash exists in location object', done => {
+ createComponent({
+ shouldShow: true,
+ });
+
+ // Component uses $nextTick so we wait until that has finished
+ setImmediate(() => {
+ expect(store.state.diffs.highlightedRow).toBe('ABC_123');
+
+ done();
+ });
+ });
+
+ it('marks current diff file based on currently highlighted row', () => {
+ createComponent({
+ shouldShow: true,
+ });
+
+ // Component uses $nextTick so we wait until that has finished
+ return wrapper.vm.$nextTick().then(() => {
+ expect(store.state.diffs.currentDiffFileId).toBe('ABC');
+ });
+ });
+ });
+
+ describe('resizable', () => {
+ afterEach(() => {
+ localStorage.removeItem('mr_tree_list_width');
+ });
+
+ it('sets initial width when no localStorage has been set', () => {
+ createComponent();
+
+ expect(wrapper.vm.treeWidth).toEqual(320);
+ });
+
+ it('sets initial width to localStorage size', () => {
+ localStorage.setItem('mr_tree_list_width', '200');
+
+ createComponent();
+
+ expect(wrapper.vm.treeWidth).toEqual(200);
+ });
+
+ it('sets width of tree list', () => {
+ createComponent();
+
+ expect(wrapper.find('.js-diff-tree-list').element.style.width).toEqual('320px');
+ });
+ });
+
+ it('marks current diff file based on currently highlighted row', done => {
+ createComponent({
+ shouldShow: true,
+ });
+
+ // Component uses $nextTick so we wait until that has finished
+ setImmediate(() => {
+ expect(store.state.diffs.currentDiffFileId).toBe('ABC');
+
+ done();
+ });
+ });
+
+ describe('empty state', () => {
+ it('renders empty state when no diff files exist', () => {
+ createComponent();
+
+ expect(wrapper.contains(NoChanges)).toBe(true);
+ });
+
+ it('does not render empty state when diff files exist', () => {
+ createComponent({}, ({ state }) => {
+ state.diffs.diffFiles.push({
+ id: 1,
+ });
+ });
+
+ expect(wrapper.contains(NoChanges)).toBe(false);
+ expect(wrapper.findAll(DiffFile).length).toBe(1);
+ });
+
+ it('does not render empty state when versions match', () => {
+ createComponent({}, ({ state }) => {
+ state.diffs.startVersion = mergeRequestDiff;
+ state.diffs.mergeRequestDiff = mergeRequestDiff;
+ });
+
+ expect(wrapper.contains(NoChanges)).toBe(false);
+ });
+ });
+
+ describe('keyboard shortcut navigation', () => {
+ const mappings = {
+ '[': -1,
+ k: -1,
+ ']': +1,
+ j: +1,
+ };
+ let spy;
+
+ describe('visible app', () => {
+ beforeEach(() => {
+ spy = jest.fn();
+
+ createComponent({
+ shouldShow: true,
+ });
+ wrapper.setMethods({
+ jumpToFile: spy,
+ });
+ });
+
+ it.each(Object.keys(mappings))(
+ 'calls `jumpToFile()` with correct parameter whenever pre-defined %s is pressed',
+ key => {
+ return wrapper.vm.$nextTick().then(() => {
+ expect(spy).not.toHaveBeenCalled();
+
+ Mousetrap.trigger(key);
+
+ expect(spy).toHaveBeenCalledWith(mappings[key]);
+ });
+ },
+ );
+
+ it('does not call `jumpToFile()` when unknown key is pressed', done => {
+ wrapper.vm
+ .$nextTick()
+ .then(() => {
+ Mousetrap.trigger('d');
+
+ expect(spy).not.toHaveBeenCalled();
+ })
+ .then(done)
+ .catch(done.fail);
+ });
+ });
+
+ describe('hideen app', () => {
+ beforeEach(() => {
+ spy = jest.fn();
+
+ createComponent({
+ shouldShow: false,
+ });
+ wrapper.setMethods({
+ jumpToFile: spy,
+ });
+ });
+
+ it('stops calling `jumpToFile()` when application is hidden', done => {
+ wrapper.vm
+ .$nextTick()
+ .then(() => {
+ Object.keys(mappings).forEach(key => {
+ Mousetrap.trigger(key);
+
+ expect(spy).not.toHaveBeenCalled();
+ });
+ })
+ .then(done)
+ .catch(done.fail);
+ });
+ });
+ });
+
+ describe('jumpToFile', () => {
+ let spy;
+
+ beforeEach(() => {
+ spy = jest.fn();
+
+ createComponent({}, () => {
+ store.state.diffs.diffFiles = [
+ { file_hash: '111', file_path: '111.js' },
+ { file_hash: '222', file_path: '222.js' },
+ { file_hash: '333', file_path: '333.js' },
+ ];
+ });
+
+ wrapper.setMethods({
+ scrollToFile: spy,
+ });
+ });
+
+ afterEach(() => {
+ wrapper.destroy();
+ });
+
+ it('jumps to next and previous files in the list', done => {
+ wrapper.vm
+ .$nextTick()
+ .then(() => {
+ wrapper.vm.jumpToFile(+1);
+
+ expect(spy.mock.calls[spy.mock.calls.length - 1]).toEqual(['222.js']);
+ store.state.diffs.currentDiffFileId = '222';
+ wrapper.vm.jumpToFile(+1);
+
+ expect(spy.mock.calls[spy.mock.calls.length - 1]).toEqual(['333.js']);
+ store.state.diffs.currentDiffFileId = '333';
+ wrapper.vm.jumpToFile(-1);
+
+ expect(spy.mock.calls[spy.mock.calls.length - 1]).toEqual(['222.js']);
+ })
+ .then(done)
+ .catch(done.fail);
+ });
+
+ it('does not jump to previous file from the first one', done => {
+ wrapper.vm
+ .$nextTick()
+ .then(() => {
+ store.state.diffs.currentDiffFileId = '333';
+
+ expect(wrapper.vm.currentDiffIndex).toEqual(2);
+
+ wrapper.vm.jumpToFile(+1);
+
+ expect(wrapper.vm.currentDiffIndex).toEqual(2);
+ expect(spy).not.toHaveBeenCalled();
+ })
+ .then(done)
+ .catch(done.fail);
+ });
+
+ it('does not jump to next file from the last one', done => {
+ wrapper.vm
+ .$nextTick()
+ .then(() => {
+ expect(wrapper.vm.currentDiffIndex).toEqual(0);
+
+ wrapper.vm.jumpToFile(-1);
+
+ expect(wrapper.vm.currentDiffIndex).toEqual(0);
+ expect(spy).not.toHaveBeenCalled();
+ })
+ .then(done)
+ .catch(done.fail);
+ });
+ });
+
+ describe('diffs', () => {
+ it('should render compare versions component', () => {
+ createComponent({}, ({ state }) => {
+ state.diffs.mergeRequestDiffs = diffsMockData;
+ state.diffs.targetBranchName = 'target-branch';
+ state.diffs.mergeRequestDiff = mergeRequestDiff;
+ });
+
+ expect(wrapper.contains(CompareVersions)).toBe(true);
+ expect(wrapper.find(CompareVersions).props()).toEqual(
+ expect.objectContaining({
+ targetBranch: {
+ branchName: 'target-branch',
+ versionIndex: -1,
+ path: '',
+ },
+ mergeRequestDiffs: diffsMockData,
+ mergeRequestDiff,
+ }),
+ );
+ });
+
+ it('should render hidden files warning if render overflow warning is present', () => {
+ createComponent({}, ({ state }) => {
+ state.diffs.renderOverflowWarning = true;
+ state.diffs.realSize = '5';
+ state.diffs.plainDiffPath = 'plain diff path';
+ state.diffs.emailPatchPath = 'email patch path';
+ state.diffs.size = 1;
+ });
+
+ expect(wrapper.contains(HiddenFilesWarning)).toBe(true);
+ expect(wrapper.find(HiddenFilesWarning).props()).toEqual(
+ expect.objectContaining({
+ total: '5',
+ plainDiffPath: 'plain diff path',
+ emailPatchPath: 'email patch path',
+ visible: 1,
+ }),
+ );
+ });
+
+ it('should display commit widget if store has a commit', () => {
+ createComponent({}, () => {
+ store.state.diffs.commit = {
+ author: 'John Doe',
+ };
+ });
+
+ expect(wrapper.contains(CommitWidget)).toBe(true);
+ });
+
+ it('should display diff file if there are diff files', () => {
+ createComponent({}, ({ state }) => {
+ state.diffs.diffFiles.push({ sha: '123' });
+ });
+
+ expect(wrapper.contains(DiffFile)).toBe(true);
+ });
+
+ it('should render tree list', () => {
+ createComponent();
+
+ expect(wrapper.find(TreeList).exists()).toBe(true);
+ });
+ });
+
+ describe('hideTreeListIfJustOneFile', () => {
+ let toggleShowTreeList;
+
+ beforeEach(() => {
+ toggleShowTreeList = jest.fn();
+ });
+
+ afterEach(() => {
+ localStorage.removeItem('mr_tree_show');
+ });
+
+ it('calls toggleShowTreeList when only 1 file', () => {
+ createComponent({}, ({ state }) => {
+ state.diffs.diffFiles.push({ sha: '123' });
+ });
+
+ wrapper.setMethods({
+ toggleShowTreeList,
+ });
+
+ wrapper.vm.hideTreeListIfJustOneFile();
+
+ expect(toggleShowTreeList).toHaveBeenCalledWith(false);
+ });
+
+ it('does not call toggleShowTreeList when more than 1 file', () => {
+ createComponent({}, ({ state }) => {
+ state.diffs.diffFiles.push({ sha: '123' });
+ state.diffs.diffFiles.push({ sha: '124' });
+ });
+
+ wrapper.setMethods({
+ toggleShowTreeList,
+ });
+
+ wrapper.vm.hideTreeListIfJustOneFile();
+
+ expect(toggleShowTreeList).not.toHaveBeenCalled();
+ });
+
+ it('does not call toggleShowTreeList when localStorage is set', () => {
+ localStorage.setItem('mr_tree_show', 'true');
+
+ createComponent({}, ({ state }) => {
+ state.diffs.diffFiles.push({ sha: '123' });
+ });
+
+ wrapper.setMethods({
+ toggleShowTreeList,
+ });
+
+ wrapper.vm.hideTreeListIfJustOneFile();
+
+ expect(toggleShowTreeList).not.toHaveBeenCalled();
+ });
+ });
+});
diff --git a/spec/frontend/diffs/create_diffs_store.js b/spec/frontend/diffs/create_diffs_store.js
new file mode 100644
index 00000000000..aacde99964c
--- /dev/null
+++ b/spec/frontend/diffs/create_diffs_store.js
@@ -0,0 +1,15 @@
+import Vue from 'vue';
+import Vuex from 'vuex';
+import diffsModule from '~/diffs/store/modules';
+import notesModule from '~/notes/stores/modules';
+
+Vue.use(Vuex);
+
+export default function createDiffsStore() {
+ return new Vuex.Store({
+ modules: {
+ diffs: diffsModule(),
+ notes: notesModule(),
+ },
+ });
+}
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