public async Task LoadAsync_Cancel_DomainClientCompletes()
{
var mockDomainClient = new CitiesMockDomainClient();
Cities.CityDomainContext ctx = new Cities.CityDomainContext(mockDomainClient);
var city = new City()
{
Name = "NewCity", StateName = "NN", CountyName = "NewCounty"
};
// If cancellation results in request beeing cancelled the result should be cancelled
var tcs = new TaskCompletionSource <QueryCompletedResult>();
using var cts = new CancellationTokenSource();
mockDomainClient.QueryCompletedResult = tcs.Task;
var loadTask = ctx.LoadAsync(ctx.GetCitiesQuery(), cts.Token);
cts.Cancel();
tcs.SetResult(new QueryCompletedResult(new[] { city }, Array.Empty <Entity>(), -1, Array.Empty <ValidationResult>()));
var result = await loadTask;
Assert.AreEqual(1, result.Entities.Count);
Assert.AreSame(city, result.Entities.First());
}
public async Task LoadAsync_ValidationErrors()
{
var mockDomainClient = new CitiesMockDomainClient();
ValidationResult[] validationErrors = new ValidationResult[] { new ValidationResult("Foo", new string[] { "Bar" }) };
mockDomainClient.QueryCompletedResult = Task.FromResult(new QueryCompletedResult(Enumerable.Empty <Entity>(), Enumerable.Empty <Entity>(), 0, validationErrors));
Cities.CityDomainContext ctx = new Cities.CityDomainContext(mockDomainClient);
var ex = await ExceptionHelper.ExpectExceptionAsync <DomainOperationException>(
() => ctx.LoadAsync(ctx.GetCitiesQuery()),
string.Format(Resource.DomainContext_LoadOperationFailed_Validation, "GetCities"));
// verify the exception properties
Assert.AreEqual(OperationErrorStatus.ValidationFailed, ex.Status);
CollectionAssert.AreEqual(validationErrors, (ICollection)ex.ValidationErrors);
}
public async Task LoadAsync_Cancel_DomainClientCancel()
{
var mockDomainClient = new CitiesMockDomainClient();
Cities.CityDomainContext ctx = new Cities.CityDomainContext(mockDomainClient);
// If cancellation results in request beeing cancelled the result should be cancelled
var tcs = new TaskCompletionSource <QueryCompletedResult>();
using var cts = new CancellationTokenSource();
mockDomainClient.QueryCompletedResult = tcs.Task;
var loadTask = ctx.LoadAsync(ctx.GetCitiesQuery(), cts.Token);
Assert.IsTrue(ctx.IsLoading);
cts.Cancel();
tcs.TrySetCanceled(cts.Token);
await ExceptionHelper.ExpectExceptionAsync <OperationCanceledException>(() => loadTask, allowDerivedExceptions : true);
Assert.IsTrue(loadTask.IsCanceled);
Assert.IsFalse(ctx.IsLoading);
}