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

I'm trying to simulate a keyDown event, specifically for Enter, keyCode: 13. I've tried a number of different ways of doing this, but none of them are working. I've also looked online and it seems like this feature is either buggy or not working in the current version of Enzyme. Does anyone know definitively if this feature works, and if so, what is the proper syntax for simulating an enter, or other types of key events? Thanks!

This is what I have currently, and it's not working:

const input = wrapper.find('input');
input.simulate('keyDown', {keyCode: 13});

My current Enzyme version is 2.4.1

reactjs enzyme

Solution 1:^[1]

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

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

Solution 2:^[2]

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 });

Solution 3:^[3]

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' })

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

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

Solution 4:^[4]

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

It worked for me...

Solution 5:^[5]

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

Enzyme 3.9.0
React 16.8.6

Solution 6:^[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 :-).

Solution 7:^[7]

This solution is working perfectly:

wrapper.find('#id1').simulate('keyDown', {key: 'ArrowRight'});
wrapper.find('#id2').simulate('keyDown', {key: 'Enter'})

Solution 8:^[8]

If you try to simulate a Event while shallowing an Element you could mock the document.addEventListener method:

let events = [];
document.addEventListener = jest.fn((event, cb) => {
    events[event] = cb;
});

shallow(<YourElement/>);

// trigger the keypress event
events.keyup({key: 's'});

// your test expectations
expect(someMethod).toBeCalledTimes(1);

Sources

This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.

Source: Stack Overflow

Solution	Source
Solution 1	JoeTidee
Solution 2	Brian Ho
Solution 3
Solution 4
Solution 5	Ecliptic Rick
Solution 6	Aleksandar Grbic
Solution 7
Solution 8	Lukas Heiligenbrunner

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

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