TouchableOpacity fails on second render with React Native Testing Library

109 views Asked by At

When I test component containing TouchableOpacity with React-Native testing library, first time render is ok, second time in test suite test always fails.

If I replace TouchableOpacity with TouchableWithoutFeedback, render will go ok. Other animated Touchable's fail too.

The tested component

import { TouchableOpacity, Text } from 'react-native';

const TestedComponent = () => (
  <TouchableOpacity testID="tested-component">
    <Text>Button</Text>
  </TouchableOpacity>
);

The tests (two are identical)

describe('TestedComponent', () => {
  test('should render TestedComponent', () => {
    render(<TestedComponent />);

    expect(screen.getByTestId('tested-component')).toBeVisible();
  });

  test('should render TestedComponent', () => {
    render(<TestedComponent />);

    expect(screen.getByTestId('tested-component')).toBeVisible();
  });
});

First one passes second fails. When I change their order — the same happens

Error I get

console.error
      Warning: Invalid hook call. Hooks can only be called inside of the body of a function component. This could happen for one of the following reasons:
      1. You might have mismatching versions of React and the renderer (such as React DOM)
      2. You might be breaking the Rules of Hooks
      3. You might have more than one copy of React in the same app
      See https://reactjs.org/link/invalid-hook-call for tips about how to debug and fix this problem.

      16 |
      17 |   test('should render TestedComponent', () => {
    > 18 |     render(<TestedComponent />, {
         |           ^
      19 |       createNodeMock: () => {},
      20 |     });
      21 |

And one more

The above error occurred in the <ForwardRef> component:
      
          at /Users/tetyana/Documents/UWRead/Codebase/uwr-mobile/node_modules/react-native/Libraries/Animated/createAnimatedComponent.js:36:57
          at TouchableOpacity (/Users/tetyana/Documents/UWRead/Codebase/uwr-mobile/node_modules/react-native/Libraries/Components/Touchable/TouchableOpacity.js:132:23)
          at TouchableOpacity
          at TestedComponent
      
      Consider adding an error boundary to your tree to customize error handling behavior.
      Visit https://reactjs.org/link/error-boundaries to learn more about error boundaries.

      16 |
      17 |   test('should render TestedComponent', () => {
    > 18 |     render(<TestedComponent />, {
         |           ^
      19 |       createNodeMock: () => {},
      20 |     });
      21 |

And one more

● TestedComponent › should render TestedComponent

    TypeError: Cannot read properties of null (reading 'useReducer')

      16 |
      17 |   test('should render TestedComponent', () => {
    > 18 |     render(<TestedComponent />, {
         |           ^
      19 |       createNodeMock: () => {},
      20 |     });
      21 |

I tried different components, as well as browsing React, React-Native and testing library docs, do different types of cleanups but with no result.

Can someone please help?

1

There are 1 answers

0
Tetiana Hrynko On

I found the culprit. I had setupTests.js running where was a block

afterEach(() => {
  jest.resetModules();
});

It caused the failure.