I am seeing missing PropTypes warning during tests when using the `containsMatchingElement` API.

Current behavior

I am seeing missing PropTypes warning during tests when using the containsMatchingElement API.

Here is a minimal code example to get the warnings:

const AnotherComponent = ({ requiredProp }) => (
  <div>{requiredProp}</div>
);

AnotherComponent.propTypes = {
  exampleProp: PropTypes.string.isRequired
};

const MyComponent = () => {
  const someComputedValue = 'foo';
  return (
    <React.Fragment>
      <AnotherComponent someValue={ someComputedValue } />
    </React.Fragment>
  );
};

const wrapper = shallow(<MyComponent />);
expect(wrapper.containsMatchingElement(<AnotherComponent />)).toBe(true);

I can use expect(wrapper.find(AnotherComponent).length).toBe(1) but I’d really like to use the containsMatchingElement API in order to check other props are correct.

Any thoughts?

Expected behavior

I would like to not see these warnings.

API

• shallow

Version

library	version
enzyme	3.8.0
react	16.8.1
react-dom	16.8.1
react-test-renderer	16.8.1
adapter (below)	16

Adapter

• enzyme-adapter-react-16

[josh08h]

Ok perfect. This can probably be closed then. Thanks

[ljharb]

Actually specifically I’d probably use expect(wrapper.exists(AnotherComponent)).toBe(false)