jest-expect-message VS enzyme

Writing code in this manner can have real world impacts. We recently removed a Jest extension, jest-expect-message, because of this exact issue. This PR - #27 - addresses that issue, but unfortunately the project seems abandoned so it hasn't been merged.

No Yes Found an issue on github here: https://github.com/airbnb/enzyme/issues/389But solutions from that issue isn't working too.How do you change select's value in tests?

I've been using Jest and Enzyme to write tests for my React components build with the awesome Styled Components library.

$(obj).val('abc');$(obj).attr('value', 'abc');$(obj).keydown();$(obj).keypress();$(obj).keyup();$(obj).blur();$(obj).change();$(obj).focus(); I've also tried to simulate keyPress (as suggested here) events but it doesn't seem to work either.

I have a React Component that implements the shouldComponentUpdate method and I'd like to unit test it. Ideally I could change some prop or state on the component in a unit test and verify it either re-rendered or not. I am using enzyme if that helps.

From the Enzyme docs shallow, render, and mount are described, but when to use which method?

const input = wrapper.find('#my-input');input.simulate('change', { target: { value: 'abc' } });const val = input.node.value;//val is '' All the solutions here appear not to work..

I'm writing a test using Enzyme for React.