How do you simulate an keyDown enter event (or others) in Enzyme?

Question

Instead of using a keyCode, I used a key, in the case of 'Enter', using mount:

wrapper.find('input').simulate('keypress', {key: 'Enter'})

I'm using 'shallow' mount (Enzyme 3.7.0 with Jest 23.6.0). This work for me:

const input = wrapper.find('input');
input.simulate('change', { target: { value: 'abcdefg'} });
input.simulate('keydown', { keyCode: 13 });

Simulate solution is deprecated

Enzyme simulate is supposed to be removed in version 4. Main maintainer is suggesting directly invoking prop functions. One solution is to directly test that invoking those props does the right thing; or you can mock out instance methods, test that the prop functions call them and unit test the instance methods.

You could call key down for example

wrapper.find('input').prop('onKeyDown')({ key: 'Enter' }) 

or

wrapper.find('input').props().onKeyDown({ key: 'Enter' }) 

Information about deprecation: https://github.com/airbnb/enzyme/issues/2173

wrapper.find('input').simulate('keydown');

It worked for me...

const wrapper = mount(<App />);
const input = wrapper.find('input');
input.props().onKeyDown({key: 'Enter'});

• Enzyme 3.9.0
• React 16.8.6

It actually depends on the implementation. If you've used something like this in your implementation:

if (event.charCode === 13) {
  // do something
}

you would simulate the event in your test like this:

wrapper.find('input').simulate('keypress', { charCode: 13 });

Hope it helps :-).