Testing components in isolation with Enzyme's shallow

addressPage.spec.js

beforeEach(()=> {
    form = shallow(<AddressForm
        address={{}}
        actions={actions}
    />);
});

it('contains exactly one email input for every address email', () => {
    let address = addressBuilder().withEmails([email0, email1]).build();
    form.setProps({address: address});

    const inputs = emailInputs();

    expect(inputs.at(0).props().value).toBe(email0);
    expect(inputs.at(1).props().value).toBe(email1);
    expect(inputs.length).toBe(2);
});