1 files changed, 99 insertions, 0 deletions
diff --git a/spec/frontend/sidebar/components/assignees/sidebar_assignees_spec.js b/spec/frontend/sidebar/components/assignees/sidebar_assignees_spec.js
new file mode 100644
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+++ b/spec/frontend/sidebar/components/assignees/sidebar_assignees_spec.js
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+import { shallowMount } from '@vue/test-utils';
+import axios from 'axios';
+import AxiosMockAdapter from 'axios-mock-adapter';
+import { nextTick } from 'vue';
+import Assigness from '~/sidebar/components/assignees/assignees.vue';
+import AssigneesRealtime from '~/sidebar/components/assignees/assignees_realtime.vue';
+import SidebarAssignees from '~/sidebar/components/assignees/sidebar_assignees.vue';
+import SidebarService from '~/sidebar/services/sidebar_service';
+import SidebarMediator from '~/sidebar/sidebar_mediator';
+import SidebarStore from '~/sidebar/stores/sidebar_store';
+import Mock from '../../mock_data';
+
+describe('sidebar assignees', () => {
+  let wrapper;
+  let mediator;
+  let axiosMock;
+  const createComponent = (props) => {
+    wrapper = shallowMount(SidebarAssignees, {
+      propsData: {
+        issuableIid: '1',
+        issuableId: 1,
+        mediator,
+        field: '',
+        projectPath: 'projectPath',
+        changing: false,
+        ...props,
+      },
+      // Attaching to document is required because this component emits something from the parent element :/
+      attachTo: document.body,
+    });
+  };
+
+  beforeEach(() => {
+    axiosMock = new AxiosMockAdapter(axios);
+    mediator = new SidebarMediator(Mock.mediator);
+
+    jest.spyOn(mediator, 'saveAssignees');
+    jest.spyOn(mediator, 'assignYourself');
+  });
+
+  afterEach(() => {
+    wrapper.destroy();
+    wrapper = null;
+
+    SidebarService.singleton = null;
+    SidebarStore.singleton = null;
+    SidebarMediator.singleton = null;
+    axiosMock.restore();
+  });
+
+  it('calls the mediator when saves the assignees', () => {
+    createComponent();
+
+    expect(mediator.saveAssignees).not.toHaveBeenCalled();
+
+    wrapper.vm.saveAssignees();
+
+    expect(mediator.saveAssignees).toHaveBeenCalled();
+  });
+
+  it('calls the mediator when "assignSelf" method is called', () => {
+    createComponent();
+
+    expect(mediator.assignYourself).not.toHaveBeenCalled();
+    expect(mediator.store.assignees.length).toBe(0);
+
+    wrapper.vm.assignSelf();
+
+    expect(mediator.assignYourself).toHaveBeenCalled();
+    expect(mediator.store.assignees.length).toBe(1);
+  });
+
+  it('hides assignees until fetched', async () => {
+    createComponent();
+
+    expect(wrapper.findComponent(Assigness).exists()).toBe(false);
+
+    wrapper.vm.store.isFetching.assignees = false;
+
+    await nextTick();
+    expect(wrapper.findComponent(Assigness).exists()).toBe(true);
+  });
+
+  describe('when issuableType is issue', () => {
+    it('finds AssigneesRealtime component', () => {
+      createComponent();
+
+      expect(wrapper.findComponent(AssigneesRealtime).exists()).toBe(true);
+    });
+  });
+
+  describe('when issuableType is MR', () => {
+    it('does not find AssigneesRealtime component', () => {
+      createComponent({ issuableType: 'MR' });
+
+      expect(wrapper.findComponent(AssigneesRealtime).exists()).toBe(false);
+    });
+  });
+});