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import { GlButtonGroup, GlButton } from '@gitlab/ui';
import { mount } from '@vue/test-utils';
import { nextTick } from 'vue';
import BlobHeaderViewerSwitcher from '~/blob/components/blob_header_viewer_switcher.vue';
import {
RICH_BLOB_VIEWER,
RICH_BLOB_VIEWER_TITLE,
SIMPLE_BLOB_VIEWER,
SIMPLE_BLOB_VIEWER_TITLE,
} from '~/blob/components/constants';
describe('Blob Header Viewer Switcher', () => {
let wrapper;
function createComponent(propsData = {}) {
wrapper = mount(BlobHeaderViewerSwitcher, {
propsData,
});
}
afterEach(() => {
wrapper.destroy();
});
describe('intiialization', () => {
it('is initialized with simple viewer as active', () => {
createComponent();
expect(wrapper.vm.value).toBe(SIMPLE_BLOB_VIEWER);
});
});
describe('rendering', () => {
let btnGroup;
let buttons;
beforeEach(() => {
createComponent();
btnGroup = wrapper.find(GlButtonGroup);
buttons = wrapper.findAll(GlButton);
});
it('renders gl-button-group component', () => {
expect(btnGroup.exists()).toBe(true);
});
it('renders exactly 2 buttons with predefined actions', () => {
expect(buttons.length).toBe(2);
[SIMPLE_BLOB_VIEWER_TITLE, RICH_BLOB_VIEWER_TITLE].forEach((title, i) => {
expect(buttons.at(i).attributes('title')).toBe(title);
});
});
});
describe('viewer changes', () => {
let buttons;
let simpleBtn;
let richBtn;
function factory(propsData = {}) {
createComponent(propsData);
buttons = wrapper.findAll(GlButton);
simpleBtn = buttons.at(0);
richBtn = buttons.at(1);
jest.spyOn(wrapper.vm, '$emit');
}
it('does not switch the viewer if the selected one is already active', () => {
factory();
expect(wrapper.vm.value).toBe(SIMPLE_BLOB_VIEWER);
simpleBtn.vm.$emit('click');
expect(wrapper.vm.value).toBe(SIMPLE_BLOB_VIEWER);
expect(wrapper.vm.$emit).not.toHaveBeenCalled();
});
it('emits an event when a Rich Viewer button is clicked', async () => {
factory();
expect(wrapper.vm.value).toBe(SIMPLE_BLOB_VIEWER);
richBtn.vm.$emit('click');
await nextTick();
expect(wrapper.vm.$emit).toHaveBeenCalledWith('input', RICH_BLOB_VIEWER);
});
it('emits an event when a Simple Viewer button is clicked', async () => {
factory({
value: RICH_BLOB_VIEWER,
});
simpleBtn.vm.$emit('click');
await nextTick();
expect(wrapper.vm.$emit).toHaveBeenCalledWith('input', SIMPLE_BLOB_VIEWER);
});
});
});
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