public void WithAServiceCollection_ThenATokenServiceIsAdded()
{
Mock <IServiceCollection> services = new Mock <IServiceCollection>();
ExtensionsHelper.AddValidationService(services.Object);
services.Verify(instance => instance.Add(It.Is <ServiceDescriptor>(x =>
x.Lifetime == ServiceLifetime.Scoped &&
x.ServiceType == typeof(IValidatorService))), Times.Once);
}
public void WithoutAServiceCollection_ThenAnExceptionIsThrown()
{
ArgumentNullException exception = Assert.Throws <ArgumentNullException>(() => ExtensionsHelper.AddValidationService(null));
Assert.AreEqual("services", exception.ParamName);
}