public void GivenViewModelWithMessages_WhenAddingNewMessage_ThenMessageAddedAtHead()
{
// Given
var messageOne = new MessageContext(MessageType.Warning, "Message1");
var viewModel = new MessageWindowViewModel();
viewModel.AddMessage(messageOne);
// Precondition
CollectionAssert.AreEqual(new[]
{
messageOne
}, viewModel.Messages);
var messageTwo = new MessageContext(MessageType.Warning, "Message2");
// When
viewModel.AddMessage(messageTwo);
// Then
CollectionAssert.AreEqual(new[]
{
messageTwo,
messageOne
}, viewModel.Messages);
}
private void Calculate()
{
DataModelValidatorResult validationResult = GetValidationResult();
if (validationResult != DataModelValidatorResult.ValidResult)
{
LogValidationResultMessages(validationResult);
return;
}
try
{
IBalancedFieldLengthCalculationModuleFactory factory = BalancedFieldLengthCalculationModuleFactory.Instance;
IBalancedFieldLengthCalculationModule calculationModule = factory.CreateModule();
BalancedFieldLengthOutput output = calculationModule.Calculate(calculation);
OutputViewModel = new OutputViewModel(output);
MessageWindowViewModel.AddMessage(new MessageContext(MessageType.Info, Resources.MainViewModel_Calculate_Calculation_completed));
}
catch (Exception e) when(e is CreateKernelDataException || e is KernelCalculationException)
{
MessageWindowViewModel.AddMessage(new MessageContext(MessageType.Error, e.Message));
MessageWindowViewModel.AddMessage(new MessageContext(MessageType.Error, Resources.MainViewModel_Calculate_Calculation_failed));
}
}
private void LogValidationResultMessages(DataModelValidatorResult validationResult)
{
foreach (string validationMessage in validationResult.ValidationMessages)
{
MessageWindowViewModel.AddMessage(new MessageContext(MessageType.Error, validationMessage));
}
MessageWindowViewModel.AddMessage(new MessageContext(MessageType.Error, Resources.MainViewModel_Calculate_Calculation_failed));
}
public void AddMessage_MessageNull_ThrowsArgumentNullException()
{
// Setup
var viewModel = new MessageWindowViewModel();
// Call
TestDelegate call = () => viewModel.AddMessage(null);
// Assert
Assert.That(call, Throws.ArgumentNullException
.With.Property(nameof(ArgumentNullException.ParamName))
.EqualTo("message"));
}