Function expectFnCalled

test/utils.ts:22–27

(action: (testFn: jest.Mock<any, any>) => void)

 * @param action
 */
export function expectFnCalled(action: (testFn: jest.Mock<any, any>) => void) {
    const testFn = jest.fn();

    action(testFn);
    expect(testFn).toBeCalled();
}

export function querySelector(className) {
    return document.body.querySelector(className);