1 files changed, 126 insertions, 0 deletions
diff --git a/spec/frontend/sidebar/components/todo_toggle/sidebar_todo_widget_spec.js b/spec/frontend/sidebar/components/todo_toggle/sidebar_todo_widget_spec.js
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index 00000000000..23f1753c4bf
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+++ b/spec/frontend/sidebar/components/todo_toggle/sidebar_todo_widget_spec.js
@@ -0,0 +1,126 @@
+import { GlIcon } from '@gitlab/ui';
+import { shallowMount } from '@vue/test-utils';
+import Vue from 'vue';
+import VueApollo from 'vue-apollo';
+import createMockApollo from 'helpers/mock_apollo_helper';
+import waitForPromises from 'helpers/wait_for_promises';
+import createFlash from '~/flash';
+import SidebarTodoWidget from '~/sidebar/components/todo_toggle/sidebar_todo_widget.vue';
+import epicTodoQuery from '~/sidebar/queries/epic_todo.query.graphql';
+import TodoButton from '~/vue_shared/components/sidebar/todo_toggle/todo_button.vue';
+import { todosResponse, noTodosResponse } from '../../mock_data';
+
+jest.mock('~/flash');
+
+Vue.use(VueApollo);
+
+describe('Sidebar Todo Widget', () => {
+  let wrapper;
+  let fakeApollo;
+
+  const findTodoButton = () => wrapper.findComponent(TodoButton);
+
+  const createComponent = ({
+    todosQueryHandler = jest.fn().mockResolvedValue(noTodosResponse),
+  } = {}) => {
+    fakeApollo = createMockApollo([[epicTodoQuery, todosQueryHandler]]);
+
+    wrapper = shallowMount(SidebarTodoWidget, {
+      apolloProvider: fakeApollo,
+      provide: {
+        canUpdate: true,
+        isClassicSidebar: true,
+      },
+      propsData: {
+        fullPath: 'group',
+        issuableIid: '1',
+        issuableId: 'gid://gitlab/Epic/4',
+        issuableType: 'epic',
+      },
+    });
+  };
+
+  afterEach(() => {
+    wrapper.destroy();
+    fakeApollo = null;
+  });
+
+  describe('when user does not have a todo for the issuable', () => {
+    beforeEach(() => {
+      createComponent();
+      return waitForPromises();
+    });
+
+    it('passes false isTodo prop to Todo button component', () => {
+      expect(findTodoButton().props('isTodo')).toBe(false);
+    });
+
+    it('emits `todoUpdated` event with a `false` payload', () => {
+      expect(wrapper.emitted('todoUpdated')).toEqual([[false]]);
+    });
+  });
+
+  describe('when user has a todo for the issuable', () => {
+    beforeEach(() => {
+      createComponent({
+        todosQueryHandler: jest.fn().mockResolvedValue(todosResponse),
+      });
+      return waitForPromises();
+    });
+
+    it('passes true isTodo prop to Todo button component', () => {
+      expect(findTodoButton().props('isTodo')).toBe(true);
+    });
+
+    it('emits `todoUpdated` event with a `true` payload', () => {
+      expect(wrapper.emitted('todoUpdated')).toEqual([[true]]);
+    });
+  });
+
+  it('displays a flash message when query is rejected', async () => {
+    createComponent({
+      todosQueryHandler: jest.fn().mockRejectedValue('Houston, we have a problem'),
+    });
+    await waitForPromises();
+
+    expect(createFlash).toHaveBeenCalled();
+  });
+
+  describe('collapsed', () => {
+    const event = { stopPropagation: jest.fn(), preventDefault: jest.fn() };
+
+    beforeEach(() => {
+      createComponent({
+        todosQueryHandler: jest.fn().mockResolvedValue(noTodosResponse),
+      });
+      return waitForPromises();
+    });
+
+    it('shows add todo icon', () => {
+      expect(wrapper.find(GlIcon).exists()).toBe(true);
+
+      expect(wrapper.find(GlIcon).props('name')).toBe('todo-add');
+    });
+
+    it('sets default tooltip title', () => {
+      expect(wrapper.find(GlIcon).attributes('title')).toBe('Add a to do');
+    });
+
+    it('when user has a to do', async () => {
+      createComponent({
+        todosQueryHandler: jest.fn().mockResolvedValue(todosResponse),
+      });
+
+      await waitForPromises();
+      expect(wrapper.find(GlIcon).props('name')).toBe('todo-done');
+      expect(wrapper.find(GlIcon).attributes('title')).toBe('Mark as done');
+    });
+
+    it('emits `todoUpdated` event on click on icon', async () => {
+      wrapper.find(GlIcon).vm.$emit('click', event);
+
+      await wrapper.vm.$nextTick();
+      expect(wrapper.emitted('todoUpdated')).toEqual([[false]]);
+    });
+  });
+});