public async Task Test_ForExistingCustomer_ShouldUpdateEmail()
{
// Arrange
var mock = new Mock <ICustomerRepository>();
var customer = Fixture.Create <Customer>();
mock.Setup(foo => foo.GetById(customer.Id)).Returns(customer);
var email = Fixture.Create <Email>();
var command = new UpdateCustomerEmailCommand(customer.Id, email);
var commandHandler = new UpdateCustomerEmailCommandHandler(mock.Object);
// Act
await commandHandler.Handle(command, CancellationToken.None);
// Assert
mock.Verify(repo => repo.GetById(customer.Id));
mock.Verify(repo => repo.Save(customer));
}
public async Task Test_ForNonExistingCustomer_ShouldThrow()
{
var mock = new Mock <ICustomerRepository>();
mock.Setup(foo => foo.GetById(1)).Returns((Customer)null);
var email = Fixture.Create <Email>();
var command = new UpdateCustomerEmailCommand(1, email);
var commandHandler = new UpdateCustomerEmailCommandHandler(mock.Object);
// Assert
var ex = await Assert.ThrowsAsync <ApplicationException>(async() => await commandHandler.Handle(command, CancellationToken.None));
Assert.Contains("Customer not found", ex.Message);
mock.Verify(repo => repo.GetById(1));
mock.VerifyNoOtherCalls();
}