Enzyme Example

test('entering a todo in form adds a todo', async () => {
	// enter todo text in textbox
	wrapper.find('.TodoForm-input').instance().value = 'My new todo';

	// click Add
	wrapper.find('.TodoForm-button').simulate('click');

	// wait for Todo to show up
	await wait(wrapper, w =>
		w
			.find('.TodoItem')
			.at(3)
			.exists()
	);

	// make sure form is cleared
	expect(wrapper.find('.TodoForm-input').instance().value).toEqual('');

	// make sure todo was added
	const newText = wrapper
		.find('.TodoItem')
		.at(3)
		.find('.TodoItem-text')
		.text();
	expect(newText).toEqual('My new todo');
});