public void ProcessPayment_Should_ReturnPartiallyPaidMessage_When_PartialPaymentExistsAndAmountPaidIsLessThanAmountDue( )
{
var invoice = new Invoice( )
{
Amount = 10,
AmountPaid = 5,
Payments = new List <Payment>
{
new Payment
{
Amount = 5
}
}
};
var repo = new InvoiceRepository(invoice);
var paymentProcessor = new InvoicePaymentProcessor(repo);
var payment = new Payment( )
{
Amount = 1
};
var result = paymentProcessor.ProcessPayment(payment);
Assert.AreEqual("another partial payment received, still not fully paid", result);
}
public void ProcessPayment_Should_ReturnFailureMessage_When_PartialPaymentExistsAndAmountPaidExceedsAmountDue( )
{
var invoice = new Invoice( )
{
Amount = 10,
AmountPaid = 5,
Payments = new List <Payment>
{
new Payment
{
Amount = 5
}
}
};
var repo = new InvoiceRepository(invoice);
var paymentProcessor = new InvoicePaymentProcessor(repo);
var payment = new Payment( )
{
Amount = 6
};
var result = paymentProcessor.ProcessPayment(payment);
Assert.AreEqual("the payment is greater than the partial amount remaining", result);
}
public void ProcessPayment_Should_ReturnFullyPaidMessage_When_NoPartialPaymentExistsAndAmountPaidEqualsInvoiceAmount( )
{
var invoice = new Invoice( )
{
Amount = 10,
AmountPaid = 0,
Payments = new List <Payment>( )
{
new Payment( )
{
Amount = 10
}
}
};
var repo = new InvoiceRepository(invoice);
var paymentProcessor = new InvoicePaymentProcessor(repo);
var payment = new Payment( )
{
Amount = 10
};
var result = paymentProcessor.ProcessPayment(payment);
Assert.AreEqual("invoice was already fully paid", result);
}
public void ProcessPayment_Should_ReturnFailureMessage_When_InvoiceAlreadyFullyPaid( )
{
var repo = new InvoiceRepository( );
var invoice = new Invoice(repo)
{
Amount = 10,
AmountPaid = 10,
Payments = new List <Payment>
{
new Payment
{
Amount = 10
}
}
};
repo.Add(invoice);
var paymentProcessor = new InvoicePaymentProcessor(repo);
var payment = new Payment( );
var result = paymentProcessor.ProcessPayment(payment);
Assert.AreEqual("invoice was already fully paid", result);
}
public void ProcessPayment_Should_ReturnFullyPaidMessage_When_PartialPaymentExistsAndAmountPaidEqualsAmountDue( )
{
var repo = new InvoiceRepository( );
var invoice = new Invoice(repo)
{
Amount = 10,
AmountPaid = 5,
Payments = new List <Payment>
{
new Payment
{
Amount = 5
}
}
};
repo.Add(invoice);
var paymentProcessor = new InvoicePaymentProcessor(repo);
var payment = new Payment( )
{
Amount = 5
};
var result = paymentProcessor.ProcessPayment(payment);
Assert.AreEqual("final partial payment received, invoice is now fully paid", result);
}
public void ProcessPayment_Should_ReturnFailureMessage_When_NoPaymentNeeded( )
{
var invoice = new Invoice( )
{
Amount = 0,
AmountPaid = 0,
Payments = null
};
var repo = new InvoiceRepository(invoice);
var paymentProcessor = new InvoicePaymentProcessor(repo);
var payment = new Payment( );
var result = paymentProcessor.ProcessPayment(payment);
Assert.AreEqual("no payment needed", result);
}
public void ProcessPayment_Should_ReturnPartiallyPaidMessage_When_NoPartialPaymentExistsAndAmountPaidIsLessThanInvoiceAmount( )
{
var invoice = new Invoice( )
{
Amount = 10,
AmountPaid = 0,
Payments = new List <Payment>( )
};
var repo = new InvoiceRepository(invoice);
var paymentProcessor = new InvoicePaymentProcessor(repo);
var payment = new Payment( )
{
Amount = 1
};
var result = paymentProcessor.ProcessPayment(payment);
Assert.AreEqual("invoice is now partially paid", result);
}
public void ProcessPayment_Should_ThrowException_When_NoInoiceFoundForPaymentReference( )
{
Invoice invoice = null;
var repo = new InvoiceRepository(invoice);
var paymentProcessor = new InvoicePaymentProcessor(repo);
var payment = new Payment( );
var failureMessage = "";
try
{
var result = paymentProcessor.ProcessPayment(payment);
}
catch (InvalidOperationException e)
{
failureMessage = e.Message;
}
Assert.AreEqual("There is no invoice matching this payment", failureMessage);
}
public void ProcessPayment_Should_ReturnFailureMessage_When_NoPartialPaymentExistsAndAmountPaidExceedsInvoiceAmount( )
{
var invoice = new Invoice( )
{
Amount = 5,
AmountPaid = 0,
Payments = new List <Payment>( )
};
var repo = new InvoiceRepository(invoice);
var paymentProcessor = new InvoicePaymentProcessor(repo);
var payment = new Payment( )
{
Amount = 6
};
var result = paymentProcessor.ProcessPayment(payment);
Assert.AreEqual("the payment is greater than the invoice amount", result);
}
