public void AssignCustomer_Throws_WhenCustomerAlreadyAssigned()
{
// Arrange
var sut = new Salesperson("Alice Abraham", Group.A, Group.B);
var customer1 = new Customer("Bob Roberts", false);
sut.AssignCustomer(customer1);
var customer2 = new Customer("Carol Christmas", false);
// Act
Action action = () => sut.AssignCustomer(customer2);
// Assert
action.Should().Throw <InvalidOperationException>();
}
public void AssignCustomer_Succeeds_AfterCustomerUnassigned()
{
// Arrange
var sut = new Salesperson("Alice Abraham", Group.A, Group.B);
var customer1 = new Customer("Bob Roberts", false);
sut.AssignCustomer(customer1);
sut.UnassignCustomer();
var customer2 = new Customer("Carol Christmas", false);
// Act
sut.AssignCustomer(customer2);
// Assert
sut.Assignment.Should().NotBeNull();
sut.Assignment?.Customer.Should().Be(customer2);
}
public void AssignCustomer_Succeeds_WhenCustomerNotAlreadyAssigned()
{
// Arrange
var sut = new Salesperson("Alice Abraham", Group.A, Group.B);
var customer = new Customer("Bob Roberts", false);
// Act
sut.AssignCustomer(customer);
// Assert
sut.Assignment.Should().NotBeNull();
sut.Assignment?.Customer.Should().Be(customer);
}