gitlab-org--gitlab-foss/spec/frontend/helpers/fake_date_spec.js

33 lines
895 B
JavaScript

import { createFakeDateClass, DEFAULT_ARGS, useRealDate } from './fake_date';
describe('spec/helpers/fake_date', () => {
describe('createFakeDateClass', () => {
let FakeDate;
beforeAll(() => {
useRealDate();
});
beforeEach(() => {
FakeDate = createFakeDateClass(DEFAULT_ARGS);
});
it('should use default args', () => {
expect(new FakeDate()).toEqual(new Date(...DEFAULT_ARGS));
expect(FakeDate()).toEqual(Date(...DEFAULT_ARGS));
});
it('should have deterministic now()', () => {
expect(FakeDate.now()).not.toBe(Date.now());
expect(FakeDate.now()).toBe(new Date(...DEFAULT_ARGS).getTime());
});
it('should be instanceof Date', () => {
expect(new FakeDate()).toBeInstanceOf(Date);
});
it('should be instanceof self', () => {
expect(new FakeDate()).toBeInstanceOf(FakeDate);
});
});
});