How do you test for the non-existence of an element using jest and react-testing-library?

Question

I have a component library that I\'m writing unit tests for using Jest and react-testing-library. Based on certain props or events I want to verify that certain elements aren\'t

Answer 1

You can use react-native-testing-library "getAllByType" and then check to see if the component is null. Has the advantage of not having to set TestID, also should work with third party components

 it('should contain Customer component', () => {
    const component = render(
);
    const customerComponent = component.getAllByType(Customer);
    expect(customerComponent).not.toBeNull();
  });