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import { shallowMount } from '@vue/test-utils';
import ReviewBar from '~/batch_comments/components/review_bar.vue';
import { REVIEW_BAR_VISIBLE_CLASS_NAME } from '~/batch_comments/constants';
import createStore from '../create_batch_comments_store';
describe('Batch comments review bar component', () => {
let store;
let wrapper;
let addEventListenerSpy;
let removeEventListenerSpy;
const createComponent = (propsData = {}) => {
store = createStore();
wrapper = shallowMount(ReviewBar, {
store,
propsData,
});
};
beforeEach(() => {
document.body.className = '';
addEventListenerSpy = jest.spyOn(window, 'addEventListener');
removeEventListenerSpy = jest.spyOn(window, 'removeEventListener');
});
afterEach(() => {
addEventListenerSpy.mockRestore();
removeEventListenerSpy.mockRestore();
wrapper.destroy();
});
describe('when mounted', () => {
it('it adds review-bar-visible class to body', async () => {
expect(document.body.classList.contains(REVIEW_BAR_VISIBLE_CLASS_NAME)).toBe(false);
createComponent();
expect(document.body.classList.contains(REVIEW_BAR_VISIBLE_CLASS_NAME)).toBe(true);
});
it('it adds a blocking handler to the `beforeunload` window event', () => {
expect(addEventListenerSpy).not.toBeCalled();
createComponent();
expect(addEventListenerSpy).toHaveBeenCalledTimes(1);
expect(addEventListenerSpy).toBeCalledWith('beforeunload', expect.any(Function), {
capture: true,
});
});
});
describe('before destroyed', () => {
it('it removes review-bar-visible class to body', async () => {
createComponent();
wrapper.destroy();
expect(document.body.classList.contains(REVIEW_BAR_VISIBLE_CLASS_NAME)).toBe(false);
});
it('it removes the blocking handler from the `beforeunload` window event', () => {
createComponent();
expect(removeEventListenerSpy).not.toBeCalled();
wrapper.destroy();
expect(removeEventListenerSpy).toHaveBeenCalledTimes(1);
expect(removeEventListenerSpy).toBeCalledWith('beforeunload', expect.any(Function), {
capture: true,
});
});
});
});
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