Refactor Web IDE collapsible sidebar logic

Make it reusable for left sidebar as well as right.

This supports merge request https://gitlab.com/gitlab-org/gitlab/merge_requests/21010

app/assets/javascripts/ide/components/ide.vue

 <script>
 import Vue from 'vue';
-import { mapActions, mapState, mapGetters } from 'vuex';
+import { mapActions, mapGetters, mapState } from 'vuex';
 import { GlButton, GlLoadingIcon } from '@gitlab/ui';
 import { __ } from '~/locale';
 import FindFile from '~/vue_shared/components/file_finder/index.vue';

app/assets/javascripts/ide/components/panes/collapsible_sidebar.vue

+<script>
+import { mapActions, mapState } from 'vuex';
+import _ from 'underscore';
+import tooltip from '~/vue_shared/directives/tooltip';
+import Icon from '~/vue_shared/components/icon.vue';
+import ResizablePanel from '../resizable_panel.vue';
+import { GlSkeletonLoading } from '@gitlab/ui';
+
+export default {
+  name: 'CollapsibleSidebar',
+  directives: {
+    tooltip,
+  },
+  components: {
+    Icon,
+    ResizablePanel,
+    GlSkeletonLoading,
+  },
+  props: {
+    extensionTabs: {
+      type: Array,
+      required: false,
+      default: () => [],
+    },
+    side: {
+      type: String,
+      required: true,
+    },
+    width: {
+      type: Number,
+      required: true,
+    },
+  },
+  computed: {
+    ...mapState(['loading']),
+    ...mapState({
+      isOpen(state) {
+        return state[this.namespace].isOpen;
+      },
+      currentView(state) {
+        return state[this.namespace].currentView;
+      },
+      isActiveView(state, getters) {
+        return getters[`${this.namespace}/isActiveView`];
+      },
+      isAliveView(_state, getters) {
+        return getters[`${this.namespace}/isAliveView`];
+      },
+    }),
+    namespace() {
+      // eslint-disable-next-line @gitlab/i18n/no-non-i18n-strings
+      return `${this.side}Pane`;
+    },
+    tabs() {
+      return this.extensionTabs.filter(tab => tab.show);
+    },
+    tabViews() {
+      return _.flatten(this.tabs.map(tab => tab.views));
+    },
+    aliveTabViews() {
+      return this.tabViews.filter(view => this.isAliveView(view.name));
+    },
+    otherSide() {
+      return this.side === 'right' ? 'left' : 'right';
+    },
+  },
+  methods: {
+    ...mapActions({
+      toggleOpen(dispatch) {
+        return dispatch(`${this.namespace}/toggleOpen`);
+      },
+      open(dispatch, view) {
+        return dispatch(`${this.namespace}/open`, view);
+      },
+    }),
+    clickTab(e, tab) {
+      e.target.blur();
+
+      if (this.isActiveTab(tab)) {
+        this.toggleOpen();
+      } else {
+        this.open(tab.views[0]);
+      }
+    },
+    isActiveTab(tab) {
+      return tab.views.some(view => this.isActiveView(view.name));
+    },
+    buttonClasses(tab) {
+      return [
+        this.side === 'right' ? 'is-right' : '',
+        this.isActiveTab(tab) && this.isOpen ? 'active' : '',
+        ...(tab.buttonClasses || []),
+      ];
+    },
+  },
+};
+</script>
+
+<template>
+  <div
+    :class="`ide-${side}-sidebar`"
+    :data-qa-selector="`ide_${side}_sidebar`"
+    class="multi-file-commit-panel ide-sidebar"
+  >
+    <resizable-panel
+      v-show="isOpen"
+      :collapsible="false"
+      :initial-width="width"
+      :min-size="width"
+      :class="`ide-${side}-sidebar-${currentView}`"
+      :side="side"
+      class="multi-file-commit-panel-inner"
+    >
+      <div class="h-100 d-flex flex-column align-items-stretch">
+        <slot v-if="isOpen" name="header"></slot>
+        <div
+          v-for="tabView in aliveTabViews"
+          v-show="isActiveView(tabView.name)"
+          :key="tabView.name"
+          class="flex-fill js-tab-view"
+        >
+          <component :is="tabView.component" />
+        </div>
+        <slot name="footer"></slot>
+      </div>
+    </resizable-panel>
+    <nav class="ide-activity-bar">
+      <ul class="list-unstyled">
+        <li>
+          <slot name="header-icon"></slot>
+        </li>
+        <li v-for="tab of tabs" :key="tab.title">
+          <button
+            v-tooltip
+            :title="tab.title"
+            :aria-label="tab.title"
+            :class="buttonClasses(tab)"
+            data-container="body"
+            :data-placement="otherSide"
+            :data-qa-selector="`${tab.title.toLowerCase()}_tab_button`"
+            class="ide-sidebar-link"
+            type="button"
+            @click="clickTab($event, tab)"
+          >
+            <icon :size="16" :name="tab.icon" />
+          </button>
+        </li>
+      </ul>
+    </nav>
+  </div>
+</template>

app/assets/javascripts/ide/components/panes/right.vue

 <script>
-import { mapActions, mapState, mapGetters } from 'vuex';
-import _ from 'underscore';
+import { mapGetters, mapState } from 'vuex';
 import { __ } from '~/locale';
-import tooltip from '../../../vue_shared/directives/tooltip';
-import Icon from '../../../vue_shared/components/icon.vue';
+import CollapsibleSidebar from './collapsible_sidebar.vue';
 import { rightSidebarViews } from '../../constants';
+import MergeRequestInfo from '../merge_requests/info.vue';
 import PipelinesList from '../pipelines/list.vue';
 import JobsDetail from '../jobs/detail.vue';
-import MergeRequestInfo from '../merge_requests/info.vue';
-import ResizablePanel from '../resizable_panel.vue';
 import Clientside from '../preview/clientside.vue';
 
 export default {
-  directives: {
-    tooltip,
-  },
+  name: 'RightPane',
   components: {
-    Icon,
-    PipelinesList,
-    JobsDetail,
-    ResizablePanel,
-    MergeRequestInfo,
-    Clientside,
+    CollapsibleSidebar,
   },
   props: {
     extensionTabs: {
@@ -32,103 +22,40 @@ export default {
   },
   computed: {
     ...mapState(['currentMergeRequestId', 'clientsidePreviewEnabled']),
-    ...mapState('rightPane', ['isOpen', 'currentView']),
     ...mapGetters(['packageJson']),
-    ...mapGetters('rightPane', ['isActiveView', 'isAliveView']),
     showLivePreview() {
       return this.packageJson && this.clientsidePreviewEnabled;
     },
-    defaultTabs() {
+    rightExtensionTabs() {
       return [
         {
-          show: this.currentMergeRequestId,
+          show: Boolean(this.currentMergeRequestId),
           title: __('Merge Request'),
-          views: [rightSidebarViews.mergeRequestInfo],
+          views: [{ component: MergeRequestInfo, ...rightSidebarViews.mergeRequestInfo }],
           icon: 'text-description',
         },
         {
           show: true,
           title: __('Pipelines'),
-          views: [rightSidebarViews.pipelines, rightSidebarViews.jobsDetail],
+          views: [
+            { component: PipelinesList, ...rightSidebarViews.pipelines },
+            { component: JobsDetail, ...rightSidebarViews.jobsDetail },
+          ],
           icon: 'rocket',
         },
         {
           show: this.showLivePreview,
           title: __('Live preview'),
-          views: [rightSidebarViews.clientSidePreview],
+          views: [{ component: Clientside, ...rightSidebarViews.clientSidePreview }],
           icon: 'live-preview',
         },
+        ...this.extensionTabs,
       ];
     },
-    tabs() {
-      return this.defaultTabs.concat(this.extensionTabs).filter(tab => tab.show);
-    },
-    tabViews() {
-      return _.flatten(this.tabs.map(tab => tab.views));
-    },
-    aliveTabViews() {
-      return this.tabViews.filter(view => this.isAliveView(view.name));
-    },
-  },
-  methods: {
-    ...mapActions('rightPane', ['toggleOpen', 'open']),
-    clickTab(e, tab) {
-      e.target.blur();
-
-      if (this.isActiveTab(tab)) {
-        this.toggleOpen();
-      } else {
-        this.open(tab.views[0]);
-      }
-    },
-    isActiveTab(tab) {
-      return tab.views.some(view => this.isActiveView(view.name));
-    },
   },
 };
 </script>
 
 <template>
-  <div class="multi-file-commit-panel ide-right-sidebar" data-qa-selector="ide_right_sidebar">
-    <resizable-panel
-      v-show="isOpen"
-      :collapsible="false"
-      :initial-width="350"
-      :min-size="350"
-      :class="`ide-right-sidebar-${currentView}`"
-      side="right"
-      class="multi-file-commit-panel-inner"
-    >
-      <div
-        v-for="tabView in aliveTabViews"
-        v-show="isActiveView(tabView.name)"
-        :key="tabView.name"
-        class="h-100"
-      >
-        <component :is="tabView.component || tabView.name" />
-      </div>
-    </resizable-panel>
-    <nav class="ide-activity-bar">
-      <ul class="list-unstyled">
-        <li v-for="tab of tabs" :key="tab.title">
-          <button
-            v-tooltip
-            :title="tab.title"
-            :aria-label="tab.title"
-            :class="{
-              active: isActiveTab(tab) && isOpen,
-            }"
-            data-container="body"
-            data-placement="left"
-            :data-qa-selector="`${tab.title.toLowerCase()}_tab_button`"
-            class="ide-sidebar-link is-right"
-            type="button"
-            @click="clickTab($event, tab)"
-          >
-            <icon :size="16" :name="tab.icon" />
-          </button>
-        </li>
-      </ul>
-    </nav>
-  </div>
+  <collapsible-sidebar :extension-tabs="rightExtensionTabs" side="right" :width="350" />
 </template>

app/assets/javascripts/ide/stores/actions.js

@@ -33,19 +33,6 @@ export const setPanelCollapsedStatus = ({ commit }, { side, collapsed }) => {
   }
 };
 
-export const toggleRightPanelCollapsed = ({ dispatch, state }, e = undefined) => {
-  if (e) {
-    $(e.currentTarget)
-      .tooltip('hide')
-      .blur();
-  }
-
-  dispatch('setPanelCollapsedStatus', {
-    side: 'right',
-    collapsed: !state.rightPanelCollapsed,
-  });
-};
-
 export const setResizingStatus = ({ commit }, resizing) => {
   commit(types.SET_RESIZING_STATUS, resizing);
 };

app/assets/javascripts/ide/stores/modules/pane/actions.js

 import * as types from './mutation_types';
 
-export const toggleOpen = ({ dispatch, state }, view) => {
+export const toggleOpen = ({ dispatch, state }) => {
   if (state.isOpen) {
     dispatch('close');
   } else {
-    dispatch('open', view);
+    dispatch('open');
   }
 };
 
-export const open = ({ commit }, view) => {
+export const open = ({ state, commit }, view) => {
   commit(types.SET_OPEN, true);
 
-  if (view) {
+  if (view && view.name !== state.currentView) {
     const { name, keepAlive } = view;
 
     commit(types.SET_CURRENT_VIEW, name);

app/assets/javascripts/ide/stores/mutation_types.js

@@ -11,7 +11,6 @@ export const SET_LINKS = 'SET_LINKS';
 // Project Mutation Types
 export const SET_PROJECT = 'SET_PROJECT';
 export const SET_CURRENT_PROJECT = 'SET_CURRENT_PROJECT';
-export const TOGGLE_PROJECT_OPEN = 'TOGGLE_PROJECT_OPEN';
 export const TOGGLE_EMPTY_STATE = 'TOGGLE_EMPTY_STATE';
 
 // Merge Request Mutation Types

app/assets/stylesheets/page_bundles/ide.scss

@@ -740,6 +740,7 @@ $ide-commit-header-height: 48px;
 .ide-sidebar-link {
   display: flex;
   align-items: center;
+  justify-content: center;
   position: relative;
   height: 60px;
   width: 100%;
@@ -1076,10 +1077,12 @@ $ide-commit-header-height: 48px;
   }
 }
 
-.ide-right-sidebar {
+.ide-sidebar {
   width: auto;
   min-width: 60px;
+}
 
+.ide-right-sidebar {
   .ide-activity-bar {
     border-left: 1px solid $white-dark;
   }

ee/spec/frontend/ide/components/panes/right_spec.js

-import { shallowMount, createLocalVue } from '@vue/test-utils';
+import { createLocalVue, shallowMount } from '@vue/test-utils';
 import Vuex from 'vuex';
 import EERightPane from 'ee/ide/components/panes/right.vue';
 import RightPane from '~/ide/components/panes/right.vue';
@@ -29,6 +29,7 @@ describe('IDE EERightPane', () => {
 
   afterEach(() => {
     wrapper.destroy();
+    wrapper = null;
   });
 
   it('adds terminal tab', () => {

qa/qa/ee/page/component/web_ide/web_terminal_panel.rb

@@ -8,8 +8,8 @@ module QA
           module WebTerminalPanel
             def self.prepended(page)
               page.module_eval do
-                view 'app/assets/javascripts/ide/components/panes/right.vue' do
-                  element :ide_right_sidebar
+                view 'app/assets/javascripts/ide/components/panes/collapsible_sidebar.vue' do
+                  element :ide_right_sidebar, %q(:data-qa-selector="`ide_${side}_sidebar`") # rubocop:disable QA/ElementWithPattern
                   element :terminal_tab_button, %q(:data-qa-selector="`${tab.title.toLowerCase()}_tab_button`") # rubocop:disable QA/ElementWithPattern
                 end
 

spec/frontend/ide/components/panes/collapsible_sidebar_spec.js

+import { createLocalVue, shallowMount } from '@vue/test-utils';
+import { createStore } from '~/ide/stores';
+import paneModule from '~/ide/stores/modules/pane';
+import CollapsibleSidebar from '~/ide/components/panes/collapsible_sidebar.vue';
+import Vuex from 'vuex';
+
+const localVue = createLocalVue();
+localVue.use(Vuex);
+
+describe('ide/components/panes/collapsible_sidebar.vue', () => {
+  let wrapper;
+  let store;
+
+  const width = 350;
+  const fakeComponentName = 'fake-component';
+
+  const createComponent = props => {
+    wrapper = shallowMount(CollapsibleSidebar, {
+      localVue,
+      store,
+      propsData: {
+        extensionTabs: [],
+        side: 'right',
+        width,
+        ...props,
+      },
+      slots: {
+        'header-icon': '<div class=".header-icon-slot">SLOT ICON</div>',
+        header: '<div class=".header-slot"/>',
+        footer: '<div class=".footer-slot"/>',
+      },
+    });
+  };
+
+  const findTabButton = () => wrapper.find(`[data-qa-selector="${fakeComponentName}_tab_button"]`);
+
+  beforeEach(() => {
+    store = createStore();
+    store.registerModule('leftPane', paneModule());
+  });
+
+  afterEach(() => {
+    wrapper.destroy();
+    wrapper = null;
+  });
+
+  describe('with a tab', () => {
+    let fakeView;
+    let extensionTabs;
+
+    beforeEach(() => {
+      const FakeComponent = localVue.component(fakeComponentName, {
+        render: () => {},
+      });
+
+      fakeView = {
+        name: fakeComponentName,
+        keepAlive: true,
+        component: FakeComponent,
+      };
+
+      extensionTabs = [
+        {
+          show: true,
+          title: fakeComponentName,
+          views: [fakeView],
+          icon: 'text-description',
+          buttonClasses: ['button-class-1', 'button-class-2'],
+        },
+      ];
+    });
+
+    describe.each`
+      side
+      ${'left'}
+      ${'right'}
+    `('when side=$side', ({ side }) => {
+      it('correctly renders side specific attributes', () => {
+        createComponent({ extensionTabs, side });
+        const button = findTabButton();
+
+        return wrapper.vm.$nextTick().then(() => {
+          expect(wrapper.classes()).toContain('multi-file-commit-panel');
+          expect(wrapper.classes()).toContain(`ide-${side}-sidebar`);
+          expect(wrapper.find('.multi-file-commit-panel-inner')).not.toBe(null);
+          expect(wrapper.find(`.ide-${side}-sidebar-${fakeComponentName}`)).not.toBe(null);
+          expect(button.attributes('data-placement')).toEqual(side === 'left' ? 'right' : 'left');
+          if (side === 'right') {
+            // this class is only needed on the right side; there is no 'is-left'
+            expect(button.classes()).toContain('is-right');
+          } else {
+            expect(button.classes()).not.toContain('is-right');
+          }
+        });
+      });
+    });
+
+    describe('when default side', () => {
+      let button;
+
+      beforeEach(() => {
+        createComponent({ extensionTabs });
+
+        button = findTabButton();
+      });
+
+      it('correctly renders tab-specific classes', () => {
+        store.state.rightPane.currentView = fakeComponentName;
+
+        return wrapper.vm.$nextTick().then(() => {
+          expect(button.classes()).toContain('button-class-1');
+          expect(button.classes()).toContain('button-class-2');
+        });
+      });
+
+      it('can show an open pane tab with an active view', () => {
+        store.state.rightPane.isOpen = true;
+        store.state.rightPane.currentView = fakeComponentName;
+
+        return wrapper.vm.$nextTick().then(() => {
+          expect(button.classes()).toEqual(expect.arrayContaining(['ide-sidebar-link', 'active']));
+          expect(button.attributes('data-original-title')).toEqual(fakeComponentName);
+          expect(wrapper.find('.js-tab-view').exists()).toBe(true);
+        });
+      });
+
+      it('does not show a pane which is not open', () => {
+        store.state.rightPane.isOpen = false;
+        store.state.rightPane.currentView = fakeComponentName;
+
+        return wrapper.vm.$nextTick().then(() => {
+          expect(button.classes()).not.toEqual(
+            expect.arrayContaining(['ide-sidebar-link', 'active']),
+          );
+          expect(wrapper.find('.js-tab-view').exists()).toBe(false);
+        });
+      });
+
+      describe('when button is clicked', () => {
+        it('opens view', () => {
+          button.trigger('click');
+          expect(store.state.rightPane.isOpen).toBeTruthy();
+        });
+
+        it('toggles open view if tab is currently active', () => {
+          button.trigger('click');
+          expect(store.state.rightPane.isOpen).toBeTruthy();
+
+          button.trigger('click');
+          expect(store.state.rightPane.isOpen).toBeFalsy();
+        });
+      });
+
+      it('shows header-icon', () => {
+        expect(wrapper.find('.header-icon-slot')).not.toBeNull();
+      });
+
+      it('shows header', () => {
+        expect(wrapper.find('.header-slot')).not.toBeNull();
+      });
+
+      it('shows footer', () => {
+        expect(wrapper.find('.footer-slot')).not.toBeNull();
+      });
+    });
+  });
+});

spec/frontend/ide/components/panes/right_spec.js

 import Vue from 'vue';
-import '~/behaviors/markdown/render_gfm';
-import { createComponentWithStore } from 'helpers/vue_mount_component_helper';
+import Vuex from 'vuex';
+import { createLocalVue, shallowMount } from '@vue/test-utils';
 import { createStore } from '~/ide/stores';
 import RightPane from '~/ide/components/panes/right.vue';
+import CollapsibleSidebar from '~/ide/components/panes/collapsible_sidebar.vue';
 import { rightSidebarViews } from '~/ide/constants';
 
-describe('IDE right pane', () => {
-  let Component;
-  let vm;
+const localVue = createLocalVue();
+localVue.use(Vuex);
 
-  beforeAll(() => {
-    Component = Vue.extend(RightPane);
+describe('ide/components/panes/right.vue', () => {
+  let wrapper;
+  let store;
+
+  const createComponent = props => {
+    wrapper = shallowMount(RightPane, {
+      localVue,
+      store,
+      propsData: {
+        ...props,
+      },
     });
+  };
 
   beforeEach(() => {
-    const store = createStore();
-
-    vm = createComponentWithStore(Component, store).$mount();
+    store = createStore();
   });
 
   afterEach(() => {
-    vm.$destroy();
+    wrapper.destroy();
+    wrapper = null;
   });
 
-  describe('active', () => {
-    it('renders merge request button as active', done => {
-      vm.$store.state.rightPane.isOpen = true;
-      vm.$store.state.rightPane.currentView = rightSidebarViews.mergeRequestInfo.name;
-      vm.$store.state.currentMergeRequestId = '123';
-      vm.$store.state.currentProjectId = 'gitlab-ce';
-      vm.$store.state.currentMergeRequestId = 1;
-      vm.$store.state.projects['gitlab-ce'] = {
-        mergeRequests: {
-          1: {
-            iid: 1,
-            title: 'Testing',
-            title_html: '<span class="title-html">Testing</span>',
-            description: 'Description',
-            description_html: '<p class="description-html">Description HTML</p>',
+  it('allows tabs to be added via extensionTabs prop', () => {
+    createComponent({
+      extensionTabs: [
+        {
+          show: true,
+          title: 'FakeTab',
         },
-        },
-      };
-
-      vm.$nextTick()
-        .then(() => {
-          expect(vm.$el.querySelector('.ide-sidebar-link.active')).not.toBe(null);
-          expect(
-            vm.$el.querySelector('.ide-sidebar-link.active').getAttribute('data-original-title'),
-          ).toBe('Merge Request');
-        })
-        .then(done)
-        .catch(done.fail);
-    });
+      ],
     });
 
-  describe('click', () => {
-    beforeEach(() => {
-      jest.spyOn(vm, 'open').mockReturnValue();
+    expect(wrapper.find(CollapsibleSidebar).props('extensionTabs')).toEqual(
+      expect.arrayContaining([
+        expect.objectContaining({
+          show: true,
+          title: 'FakeTab',
+        }),
+      ]),
+    );
   });
 
-    it('sets view to merge request', done => {
-      vm.$store.state.currentMergeRequestId = '123';
+  describe('pipelines tab', () => {
+    it('is always shown', () => {
+      createComponent();
 
-      vm.$nextTick(() => {
-        vm.$el.querySelector('.ide-sidebar-link').click();
+      expect(wrapper.find(CollapsibleSidebar).props('extensionTabs')).toEqual(
+        expect.arrayContaining([
+          expect.objectContaining({
+            show: true,
+            title: 'Pipelines',
+            views: expect.arrayContaining([
+              expect.objectContaining({
+                name: rightSidebarViews.pipelines.name,
+              }),
+              expect.objectContaining({
+                name: rightSidebarViews.jobsDetail.name,
+              }),
+            ]),
+          }),
+        ]),
+      );
+    });
+  });
 
-        expect(vm.open).toHaveBeenCalledWith(rightSidebarViews.mergeRequestInfo);
+  describe('merge request tab', () => {
+    it('is shown if there is a currentMergeRequestId', () => {
+      store.state.currentMergeRequestId = 1;
 
-        done();
-      });
+      createComponent();
+
+      expect(wrapper.find(CollapsibleSidebar).props('extensionTabs')).toEqual(
+        expect.arrayContaining([
+          expect.objectContaining({
+            show: true,
+            title: 'Merge Request',
+            views: expect.arrayContaining([
+              expect.objectContaining({
+                name: rightSidebarViews.mergeRequestInfo.name,
+              }),
+            ]),
+          }),
+        ]),
+      );
     });
   });
 
-  describe('live preview', () => {
-    it('renders live preview button', done => {
-      Vue.set(vm.$store.state.entries, 'package.json', {
+  describe('clientside live preview tab', () => {
+    it('is shown if there is a packageJson and clientsidePreviewEnabled', () => {
+      Vue.set(store.state.entries, 'package.json', {
         name: 'package.json',
       });
-      vm.$store.state.clientsidePreviewEnabled = true;
+      store.state.clientsidePreviewEnabled = true;
 
-      vm.$nextTick(() => {
-        expect(vm.$el.querySelector('button[aria-label="Live preview"]')).not.toBeNull();
+      createComponent();
 
-        done();
-      });
+      expect(wrapper.find(CollapsibleSidebar).props('extensionTabs')).toEqual(
+        expect.arrayContaining([
+          expect.objectContaining({
+            show: true,
+            title: 'Live preview',
+            views: expect.arrayContaining([
+              expect.objectContaining({
+                name: rightSidebarViews.clientSidePreview.name,
+              }),
+            ]),
+          }),
+        ]),
+      );
     });
   });
 });

spec/frontend/ide/stores/modules/pane/actions_spec.js

@@ -8,14 +8,7 @@ describe('IDE pane module actions', () => {
 
   describe('toggleOpen', () => {
     it('dispatches open if closed', done => {
-      testAction(
-        actions.toggleOpen,
-        TEST_VIEW,
-        { isOpen: false },
-        [],
-        [{ type: 'open', payload: TEST_VIEW }],
-        done,
-      );
+      testAction(actions.toggleOpen, TEST_VIEW, { isOpen: false }, [], [{ type: 'open' }], done);
     });
 
     it('dispatches close if opened', done => {
@@ -24,11 +17,8 @@ describe('IDE pane module actions', () => {
   });
 
   describe('open', () => {
-    it('commits SET_OPEN', done => {
-      testAction(actions.open, null, {}, [{ type: types.SET_OPEN, payload: true }], [], done);
-    });
-
-    it('commits SET_CURRENT_VIEW if view is given', done => {
+    describe('with a view specified', () => {
+      it('commits SET_OPEN and SET_CURRENT_VIEW', done => {
         testAction(
           actions.open,
           TEST_VIEW,
@@ -58,6 +48,20 @@ describe('IDE pane module actions', () => {
       });
     });
 
+    describe('without a view specified', () => {
+      it('commits SET_OPEN', done => {
+        testAction(
+          actions.open,
+          undefined,
+          {},
+          [{ type: types.SET_OPEN, payload: true }],
+          [],
+          done,
+        );
+      });
+    });
+  });
+
   describe('close', () => {
     it('commits SET_OPEN', done => {
       testAction(actions.close, null, {}, [{ type: types.SET_OPEN, payload: false }], [], done);