public async Task Add_WithGetRequest_ShouldReturnViewWithViewModel()
{
// Arrange
var categories = new List <Category>
{
new Category {
Id = 101, Name = "Category One"
},
new Category {
Id = 102, Name = "Category Two"
},
new Category {
Id = 103, Name = "Category Three"
}
};
var controllerBuilder = new TransactionsControllerBuilder();
controllerBuilder.MockCategoriesDataService.Setup(x => x.RetrieveCategoriesAsync()).ReturnsAsync(categories);
using var controller = controllerBuilder.Build();
// Act
var result = await controller.Add();
// Assert
Assert.IsNotNull(result, FailureMessages.ResultIsNull);
Assert.IsInstanceOfType(result, typeof(ViewResult), FailureMessages.ResultNotExpectedType);
var viewResult = result as ViewResult;
Assert.IsNotNull(viewResult.Model, FailureMessages.ViewModelIsNull);
Assert.IsInstanceOfType(viewResult.Model, typeof(AddTransactionViewModel), FailureMessages.ViewModelNotExpectedType);
var viewModel = viewResult.Model as AddTransactionViewModel;
Assert.AreEqual(DateTime.Today, viewModel.Date, FailureMessages.ViewModelPropertyNotExpectedValue);
Assert.AreEqual(categories.Count, viewModel.CategoriesList.Count(), FailureMessages.IncorrectItemCount);
}
public async Task Add_WithInvalidViewModel_ShouldReturnViewWithSameViewModel()
{
// Arrange
var controllerBuilder = new TransactionsControllerBuilder();
using var controller = controllerBuilder.Build();
controller.ModelState.AddModelError("SomeKey", "SomeErrorMessage");
var postedViewModel = new AddTransactionViewModel
{
Date = new DateTime(2008, 11, 17),
CategoryId = 101,
Memo = "Something",
Amount = 123.45m,
IsCredit = false
};
// Act
var result = await controller.Add(postedViewModel);
// Assert
Assert.IsNotNull(result, FailureMessages.ResultIsNull);
Assert.IsInstanceOfType(result, typeof(ViewResult), FailureMessages.ResultNotExpectedType);
var viewResult = result as ViewResult;
Assert.IsNotNull(viewResult.Model, FailureMessages.ViewModelIsNull);
Assert.IsInstanceOfType(viewResult.Model, typeof(AddTransactionViewModel), FailureMessages.ViewModelNotExpectedType);
var resultViewModel = viewResult.Model as AddTransactionViewModel;
Assert.AreEqual(postedViewModel.Date, resultViewModel.Date, FailureMessages.ViewModelPropertyNotExpectedValue);
Assert.AreEqual(postedViewModel.CategoryId, resultViewModel.CategoryId, FailureMessages.ViewModelPropertyNotExpectedValue);
Assert.AreEqual(postedViewModel.Memo, resultViewModel.Memo, FailureMessages.ViewModelPropertyNotExpectedValue);
Assert.AreEqual(postedViewModel.Amount, resultViewModel.Amount, FailureMessages.ViewModelPropertyNotExpectedValue);
Assert.AreEqual(postedViewModel.IsCredit, resultViewModel.IsCredit, FailureMessages.ViewModelPropertyNotExpectedValue);
}
public async Task Add_WithNullViewModel_ShouldThrowException()
{
// Arrange
var controllerBuilder = new TransactionsControllerBuilder();
using var controller = controllerBuilder.Build();
Exception caughtException = null;
// Act
try
{
_ = await controller.Add(null);
}
catch (Exception exception)
{
caughtException = exception;
}
// Assert
Assert.IsNotNull(caughtException, FailureMessages.ExceptionNotThrown);
Assert.IsInstanceOfType(caughtException, typeof(ArgumentNullException), FailureMessages.ExceptionNotExpectedType);
}