public void DetermineNotesQuantity_WhenAmountIsLessThan0_ShouldReturnInvalidAmountErrorMessage()
{
var amount = -10;
var service = new NotesInfoService(new DetermineNotesQuantityPipeFactory());
var notesInfo = service.DetermineNotesQuantity(amount);
Assert.AreEqual(0, notesInfo.QuantityOf100Notes);
Assert.AreEqual(0, notesInfo.QuantityOf50Notes);
Assert.AreEqual(0, notesInfo.QuantityOf20Notes);
Assert.AreEqual(0, notesInfo.QuantityOf10Notes);
Assert.AreEqual("Invalid amount", notesInfo.ErrorMessage);
}
public void DetermineNotesQuantity_WhenAmountDoesNotEndWith0_ShouldReturnNoteUnavailableErrorMessage()
{
var amount = 125;
var service = new NotesInfoService(new DetermineNotesQuantityPipeFactory());
var notesInfo = service.DetermineNotesQuantity(amount);
Assert.AreEqual(0, notesInfo.QuantityOf100Notes);
Assert.AreEqual(0, notesInfo.QuantityOf50Notes);
Assert.AreEqual(0, notesInfo.QuantityOf20Notes);
Assert.AreEqual(0, notesInfo.QuantityOf10Notes);
Assert.AreEqual("Note unavailable", notesInfo.ErrorMessage);
}
public void DetermineNotesQuantity_WhenAmountIs260_ShouldHave2Of100And1Of50And1Of10()
{
var amount = 260;
var service = new NotesInfoService(new DetermineNotesQuantityPipeFactory());
var notesInfo = service.DetermineNotesQuantity(amount);
Assert.AreEqual(2, notesInfo.QuantityOf100Notes);
Assert.AreEqual(1, notesInfo.QuantityOf50Notes);
Assert.AreEqual(0, notesInfo.QuantityOf20Notes);
Assert.AreEqual(1, notesInfo.QuantityOf10Notes);
Assert.IsNull(notesInfo.ErrorMessage);
}