private static IRegistration createRegistration(TransientLifecycle sut)
{
return(sut.CreateRegistration(typeof(IEmailService), typeof(NullEmailService)));
}
public void CreateRegistration_WhenRegistering_WithNullImplementationType_ShouldThrowArgumentNullException()
{
TransientLifecycle sut = createSut();
Assert.Throws <ArgumentNullException>(() => sut.CreateRegistration(typeof(IEmailService), null));
}