@ima/devtools/src/components/molecule/alerts/__tests__/AlertsSpec.jsx

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import { shallow } from 'enzyme';

import Alerts from '../Alerts';

describe('Alerts molecule', () => {
  const props = {
    alerts: {
      0: {
        id: '0',
        hidden: false,
        title: 'title',
        content: 'content',
        type: 'default',
      },
    },
    removeAlert: jest.fn(),
  };

  let wrapper = shallow(<Alerts {...props} />);
  let instance = wrapper.instance();

  it('should call props.removeAlert when clicking on alert', () => {
    wrapper.find('Alert').simulate('click');

    expect(instance.props.removeAlert.mock.calls).toHaveLength(1);
    expect(instance.props.removeAlert.mock.calls[0][0]).toBe('0');
  });
});