Mocking Mixin Class Methods

example.js

const MockHeaderAction = (Component) => (
  class MockHeaderAction extends React.Component {
    constructor () {
      super(...arguments);
      this.headerAction = jest.fn();
    }
    render() {
      return <Component { ...this.props } { ...this.state } />
    }
  }
);

const generateComponent = (additionalProps = {}) => {
  const newProps = {
    ...defaultProps,
    ...additionalProps,
  };
  const MockedDevotions = MockHeaderAction(Devotions);
  return <MockedDevotions { ...newProps } />;
};