Test a form in React with jest and enzyme


I'm totally lost trying to test a simple form made with React, how do I know if the submit button is working? After some research I thought that the way to do it is to make a mock function and then check if it was called but I'm pretty sure I'm doing it completely wrong.

onObjSubmit(event){ event.preventDefault() ..... (fetch something) } render(){ return ( <form id="myForm" onSubmit={event => this.onObjSubmit(event)}> <input type="text" id="name" />
<input type="text" id="last_name" />
<input type="submit" value="submit"> </form> ); }

And the test:

it('Test', () => { const wrapper = shallow(<TestComp />); const fn = jest.fn(); wrapper.instance().onObjSubmit = fn; wrapper.update(); wrapper.find('#myForm').simulate('submit'); expect(fn).toBeCalled(); });

Can someone please point me in the right direction?


You're not the only one who feels lost with this one. This thread on Enzyme's issues page has a lot of suggested approaches to solving this problem.



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