1 files changed, 135 insertions, 0 deletions
diff --git a/spec/frontend/sidebar/components/assignees/uncollapsed_assignee_list_spec.js b/spec/frontend/sidebar/components/assignees/uncollapsed_assignee_list_spec.js
new file mode 100644
index 00000000000..64170a53a7f
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+++ b/spec/frontend/sidebar/components/assignees/uncollapsed_assignee_list_spec.js
@@ -0,0 +1,135 @@
+import Vue from 'vue';
+import { mount } from '@vue/test-utils';
+import UncollapsedAssigneeList from '~/sidebar/components/assignees/uncollapsed_assignee_list.vue';
+import AssigneeAvatarLink from '~/sidebar/components/assignees/assignee_avatar_link.vue';
+import { TEST_HOST } from 'helpers/test_constants';
+import userDataMock from '../../user_data_mock';
+import UsersMockHelper from '../../../helpers/user_mock_data_helper';
+
+const DEFAULT_RENDER_COUNT = 5;
+
+describe('UncollapsedAssigneeList component', () => {
+  let wrapper;
+
+  function createComponent(props = {}) {
+    const propsData = {
+      users: [],
+      rootPath: TEST_HOST,
+      ...props,
+    };
+
+    wrapper = mount(UncollapsedAssigneeList, {
+      sync: false,
+      propsData,
+    });
+  }
+
+  afterEach(() => {
+    wrapper.destroy();
+  });
+
+  const findMoreButton = () => wrapper.find('.user-list-more button');
+
+  describe('One assignee/user', () => {
+    let user;
+
+    beforeEach(() => {
+      user = userDataMock();
+
+      createComponent({
+        users: [user],
+      });
+    });
+
+    it('only has one user', () => {
+      expect(wrapper.findAll(AssigneeAvatarLink).length).toBe(1);
+    });
+
+    it('calls the AssigneeAvatarLink with the proper props', () => {
+      expect(wrapper.find(AssigneeAvatarLink).exists()).toBe(true);
+      expect(wrapper.find(AssigneeAvatarLink).props().tooltipPlacement).toEqual('left');
+    });
+
+    it('Shows one user with avatar, username and author name', () => {
+      expect(wrapper.text()).toContain(user.name);
+      expect(wrapper.text()).toContain(`@${user.username}`);
+    });
+  });
+
+  describe('Two or more assignees/users', () => {
+    beforeEach(() => {
+      createComponent({
+        users: UsersMockHelper.createNumberRandomUsers(3),
+      });
+    });
+
+    it('more than one user', () => {
+      expect(wrapper.findAll(AssigneeAvatarLink).length).toBe(3);
+    });
+
+    it('shows the "show-less" assignees label', done => {
+      const users = UsersMockHelper.createNumberRandomUsers(6);
+
+      createComponent({
+        users,
+      });
+
+      expect(wrapper.vm.$el.querySelectorAll('.user-item').length).toEqual(DEFAULT_RENDER_COUNT);
+
+      expect(wrapper.vm.$el.querySelector('.user-list-more')).not.toBe(null);
+      const usersLabelExpectation = users.length - DEFAULT_RENDER_COUNT;
+
+      expect(wrapper.vm.$el.querySelector('.user-list-more .btn-link').innerText.trim()).not.toBe(
+        `+${usersLabelExpectation} more`,
+      );
+      wrapper.vm.toggleShowLess();
+      Vue.nextTick(() => {
+        expect(wrapper.vm.$el.querySelector('.user-list-more .btn-link').innerText.trim()).toBe(
+          '- show less',
+        );
+        done();
+      });
+    });
+
+    it('shows the "show-less" when "n+ more " label is clicked', done => {
+      createComponent({
+        users: UsersMockHelper.createNumberRandomUsers(6),
+      });
+
+      wrapper.vm.$el.querySelector('.user-list-more .btn-link').click();
+      Vue.nextTick(() => {
+        expect(wrapper.vm.$el.querySelector('.user-list-more .btn-link').innerText.trim()).toBe(
+          '- show less',
+        );
+        done();
+      });
+    });
+
+    it('does not show n+ more label when less than render count', () => {
+      expect(findMoreButton().exists()).toBe(false);
+    });
+  });
+
+  describe('n+ more label', () => {
+    beforeEach(() => {
+      createComponent({
+        users: UsersMockHelper.createNumberRandomUsers(DEFAULT_RENDER_COUNT + 1),
+      });
+    });
+
+    it('shows "+1 more" label', () => {
+      expect(findMoreButton().text()).toBe('+ 1 more');
+      expect(wrapper.findAll(AssigneeAvatarLink).length).toBe(DEFAULT_RENDER_COUNT);
+    });
+
+    it('shows "show less" label', done => {
+      findMoreButton().trigger('click');
+
+      Vue.nextTick(() => {
+        expect(findMoreButton().text()).toBe('- show less');
+        expect(wrapper.findAll(AssigneeAvatarLink).length).toBe(DEFAULT_RENDER_COUNT + 1);
+        done();
+      });
+    });
+  });
+});