import { shallowMount } from '@vue/test-utils'; import { GlButton } from '@gitlab/ui'; import LogControlButtons from '~/logs/components/log_control_buttons.vue'; describe('LogControlButtons', () => { let wrapper; const findScrollToTop = () => wrapper.find('.js-scroll-to-top'); const findScrollToBottom = () => wrapper.find('.js-scroll-to-bottom'); const findRefreshBtn = () => wrapper.find('.js-refresh-log'); const initWrapper = opts => { wrapper = shallowMount(LogControlButtons, { listeners: { scrollUp: () => {}, scrollDown: () => {}, }, ...opts, }); }; afterEach(() => { if (wrapper) { wrapper.destroy(); } }); it('displays UI elements', () => { initWrapper(); expect(findScrollToTop().is(GlButton)).toBe(true); expect(findScrollToBottom().is(GlButton)).toBe(true); expect(findRefreshBtn().is(GlButton)).toBe(true); }); it('emits a `refresh` event on click on `refresh` button', () => { initWrapper(); // An `undefined` value means no event was emitted expect(wrapper.emitted('refresh')).toBe(undefined); findRefreshBtn().vm.$emit('click'); return wrapper.vm.$nextTick().then(() => { expect(wrapper.emitted('refresh')).toHaveLength(1); }); }); describe('when scrolling actions are enabled', () => { beforeEach(() => { // mock scrolled to the middle of a long page initWrapper(); return wrapper.vm.$nextTick(); }); it('click on "scroll to top" scrolls up', () => { expect(findScrollToTop().attributes('disabled')).toBeUndefined(); findScrollToTop().vm.$emit('click'); expect(wrapper.emitted('scrollUp')).toHaveLength(1); }); it('click on "scroll to bottom" scrolls down', () => { expect(findScrollToBottom().attributes('disabled')).toBeUndefined(); findScrollToBottom().vm.$emit('click'); expect(wrapper.emitted('scrollDown')).toHaveLength(1); }); }); describe('when scrolling actions are disabled', () => { beforeEach(() => { initWrapper({ listeners: {} }); return wrapper.vm.$nextTick(); }); it('buttons are disabled', () => { return wrapper.vm.$nextTick(() => { expect(findScrollToTop().exists()).toBe(false); expect(findScrollToBottom().exists()).toBe(false); // This should be enabled when gitlab-ui contains: // https://gitlab.com/gitlab-org/gitlab-ui/-/merge_requests/1149 // expect(findScrollToBottom().is('[disabled]')).toBe(true); }); }); }); });