Spying on the action to test component in isolation

addressPage.spec.js

it('deletes email when button is clicked', () => {
    let address = addressBuilder().withEmails([email0, email1]).build();
    form.setProps({address: address});

    actions.updateEmails = jest.fn((value) => {
        expect(value).toEqual(email1);
    });

    const buttons = form.find(inputByClass(deleteEmailCss));
    simulateClick(buttons.first());

    expect(actions.updateEmails).toHaveBeenCalled();
});