added specs to store & activity bar component

spec/javascripts/ide/components/activity_bar_spec.js

+import Vue from 'vue';
+import store from '~/ide/stores';
+import { ActivityBarViews } from '~/ide/stores/state';
+import ActivityBar from '~/ide/components/activity_bar.vue';
+import { createComponentWithStore } from '../../helpers/vue_mount_component_helper';
+import { resetStore } from '../helpers';
+
+describe('IDE activity bar', () => {
+  const Component = Vue.extend(ActivityBar);
+  let vm;
+
+  beforeEach(() => {
+    Vue.set(store.state.projects, 'abcproject', {
+      web_url: 'testing',
+    });
+    Vue.set(store.state, 'currentProjectId', 'abcproject');
+
+    vm = createComponentWithStore(Component, store);
+  });
+
+  afterEach(() => {
+    vm.$destroy();
+
+    resetStore(vm.$store);
+  });
+
+  describe('goBackUrl', () => {
+    it('renders the Go Back link with the referrer when present', () => {
+      const fakeReferrer = '/example/README.md';
+      spyOnProperty(document, 'referrer').and.returnValue(fakeReferrer);
+
+      vm.$mount();
+
+      expect(vm.goBackUrl).toEqual(fakeReferrer);
+    });
+
+    it('renders the Go Back link with the project url when referrer is not present', () => {
+      const fakeReferrer = '';
+      spyOnProperty(document, 'referrer').and.returnValue(fakeReferrer);
+
+      vm.$mount();
+
+      expect(vm.goBackUrl).toEqual('testing');
+    });
+  });
+
+  describe('updateActivityBarView', () => {
+    beforeEach(() => {
+      spyOn(vm, 'updateActivityBarView');
+
+      vm.$mount();
+    });
+
+    it('calls updateActivityBarView with edit value on click', () => {
+      vm.$el.querySelector('.js-ide-edit-mode').click();
+
+      expect(vm.updateActivityBarView).toHaveBeenCalledWith(ActivityBarViews.edit);
+    });
+
+    it('calls updateActivityBarView with commit value on click', () => {
+      vm.$el.querySelector('.js-ide-commit-mode').click();
+
+      expect(vm.updateActivityBarView).toHaveBeenCalledWith(ActivityBarViews.commit);
+    });
+  });
+
+  describe('active item', () => {
+    beforeEach(() => {
+      vm.$mount();
+    });
+
+    it('sets edit item active', () => {
+      expect(vm.$el.querySelector('.js-ide-edit-mode').classList).toContain('active');
+    });
+
+    it('sets commit item active', done => {
+      vm.$store.state.currentActivityView = ActivityBarViews.commit;
+
+      vm.$nextTick(() => {
+        expect(vm.$el.querySelector('.js-ide-commit-mode').classList).toContain('active');
+
+        done();
+      });
+    });
+  });
+});

spec/javascripts/ide/stores/actions_spec.js

 import * as urlUtils from '~/lib/utils/url_utility';
+import * as actions from '~/ide/stores/actions';
 import store from '~/ide/stores';
 import router from '~/ide/ide_router';
 import { resetStore, file } from '../helpers';
+import testAction from '../../helpers/vuex_action_helper';
 
 describe('Multi-file store actions', () => {
   beforeEach(() => {
@@ -191,9 +193,7 @@ describe('Multi-file store actions', () => {
           })
           .then(f => {
             expect(f.tempFile).toBeTruthy();
-            expect(store.state.trees['abcproject/mybranch'].tree.length).toBe(
-              1,
-            );
+            expect(store.state.trees['abcproject/mybranch'].tree.length).toBe(1);
 
             done();
           })
@@ -303,4 +303,43 @@ describe('Multi-file store actions', () => {
         .catch(done.fail);
     });
   });
+
+  describe('updateActivityBarView', () => {
+    it('commits UPDATE_ACTIVITY_BAR_VIEW', done => {
+      testAction(
+        actions.updateActivityBarView,
+        'test',
+        {},
+        [{ type: 'UPDATE_ACTIVITY_BAR_VIEW', payload: 'test' }],
+        [],
+        done,
+      );
+    });
+  });
+
+  describe('setEmptyStateSvgs', () => {
+    it('commits setEmptyStateSvgs', done => {
+      testAction(
+        actions.setEmptyStateSvgs,
+        'svg',
+        {},
+        [{ type: 'SET_EMPTY_STATE_SVGS', payload: 'svg' }],
+        [],
+        done,
+      );
+    });
+  });
+
+  describe('setCurrentBranchId', () => {
+    it('commits setCurrentBranchId', done => {
+      testAction(
+        actions.setCurrentBranchId,
+        'branchId',
+        {},
+        [{ type: 'SET_CURRENT_BRANCH', payload: 'branchId' }],
+        [],
+        done,
+      );
+    });
+  });
 });

spec/javascripts/ide/stores/mutations_spec.js

@@ -76,4 +76,26 @@ describe('Multi-file store mutations', () => {
       expect(localState.viewer).toBe('diff');
     });
   });
+
+  describe('UPDATE_ACTIVITY_BAR_VIEW', () => {
+    it('updates currentActivityBar', () => {
+      mutations.UPDATE_ACTIVITY_BAR_VIEW(localState, 'test');
+
+      expect(localState.currentActivityView).toBe('test');
+    });
+  });
+
+  describe('SET_EMPTY_STATE_SVGS', () => {
+    it('updates empty state SVGs', () => {
+      mutations.SET_EMPTY_STATE_SVGS(localState, {
+        emptyStateSvgPath: 'emptyState',
+        noChangesStateSvgPath: 'noChanges',
+        committedStateSvgPath: 'commited',
+      });
+
+      expect(localState.emptyStateSvgPath).toBe('emptyState');
+      expect(localState.noChangesStateSvgPath).toBe('noChanges');
+      expect(localState.committedStateSvgPath).toBe('commited');
+    });
+  });
 });