Bug in scryRenderedComponentsWithType

[pronebird]

scryRenderedComponentsWithType spits the following:

findAllInRenderedTree(...): instance must be a composite component

test case:

class Accordion extends React.Component {
  render() {
    return (<div>{ this.props.children }</div>);
  }
}
const tree = ReactTestUtils.renderIntoDocument(
      <div>
        <Accordion height={ 0 }>
          <div>Hello</div>
        </Accordion>
      </div>
);

const elements = ReactTestUtils.scryRenderedComponentsWithType(tree, Accordion);
expect(elements[0].clientHeight).to.be.equal(0);

[gaearon]

This doesn't tell us much (what is Accordion?)

Please provide a full reproducing project.

[pronebird]

Accordion is any kind of component that inherits from React.Component. I updated my test. I wonder why none of internal React tests failed, either I don't understand documentation or none of this works.

[gaearon]

I think scryRenderedComponentsWithType() accepts a component instance as first argument, not a div.

I agree the API is confusing there. In practice most people are using Enzyme (https://airbnb.io/enzyme/) these days so I don't think we'll invest much work into fixing this. I encourage you to try Enzyme.

[gaearon]

I made the error message clearer in #13351.
Thanks for reporting.