[PreventExecutionContextLeaks] // Workaround for https://github.com/nunit/nunit/issues/3283
public static async Task BeginContext_handler_flows_into_new_thread()
{
var source = new TaskCompletionSource <object?>();
var watcher = new CallbackWatcher();
var thread = new Thread(() =>
{
try
{
using (watcher.ExpectCallback())
AmbientTasks.Add(Task.FromException(new Exception()));
source.SetResult(null);
}
catch (Exception ex)
{
source.SetException(ex);
}
});
AmbientTasks.BeginContext(ex => watcher.OnCallback());
thread.Start();
await source.Task;
}
[PreventExecutionContextLeaks] // Workaround for https://github.com/nunit/nunit/issues/3283
public static async Task BeginContext_handler_flows_into_ThreadPool_QueueUserWorkItem()
{
var watcher = new CallbackWatcher();
AmbientTasks.BeginContext(ex => watcher.OnCallback());
var source = new TaskCompletionSource <object?>();
ThreadPool.QueueUserWorkItem(_ =>
{
try
{
using (watcher.ExpectCallback())
AmbientTasks.Add(Task.FromException(new Exception()));
source.SetResult(null);
}
catch (Exception ex)
{
source.SetException(ex);
}
}, null);
await source.Task;
}
[PreventExecutionContextLeaks] // Workaround for https://github.com/nunit/nunit/issues/3283
public static void Handler_should_be_called_one_additional_time_to_handle_its_own_exception()
{
var taskException = new Exception();
var handlerException = new Exception();
var watcher = new CallbackWatcher();
AmbientTasks.BeginContext(ex =>
{
watcher.OnCallback(out var callCount);
if (callCount == 1)
{
throw handlerException;
}
ex.ShouldBe(handlerException);
});
using (watcher.ExpectCallback(count: 2))
AmbientTasks.Add(Task.FromException(taskException));
var waitAllTask = AmbientTasks.WaitAllAsync();
waitAllTask.Status.ShouldBe(TaskStatus.Faulted);
var aggregateException = waitAllTask.Exception !.InnerExceptions.ShouldHaveSingleItem().ShouldBeOfType <AggregateException>();
aggregateException.InnerExceptions.ShouldHaveSingleItem().ShouldBeSameAs(taskException);
}
[PreventExecutionContextLeaks] // Workaround for https://github.com/nunit/nunit/issues/3283
public static async Task BeginContext_handler_does_not_flow_from_inner_method_back_to_outer_method_after_await()
{
var watcher = new CallbackWatcher();
AmbientTasks.BeginContext(ex => watcher.OnCallback());
await InnerFunction();
using (watcher.ExpectCallback())
AmbientTasks.Add(Task.FromException(new Exception()));
[PreventExecutionContextLeaks] // Workaround for https://github.com/nunit/nunit/issues/3283
public static async Task BeginContext_handler_flows_across_await()
{
var watcher = new CallbackWatcher();
AmbientTasks.BeginContext(ex => watcher.OnCallback());
await Task.Yield();
using (watcher.ExpectCallback())
AmbientTasks.Add(Task.FromException(new Exception()));
}
[PreventExecutionContextLeaks] // Workaround for https://github.com/nunit/nunit/issues/3283
public static void BeginContext_handler_is_replaced_with_next_call()
{
AmbientTasks.BeginContext(ex => Assert.Fail("This handler should not be called."));
var watcher = new CallbackWatcher();
AmbientTasks.BeginContext(ex => watcher.OnCallback());
using (watcher.ExpectCallback())
AmbientTasks.Add(Task.FromException(new Exception()));
}
[PreventExecutionContextLeaks] // Workaround for https://github.com/nunit/nunit/issues/3283
public static async Task BeginContext_handler_flows_into_Task_Run()
{
var watcher = new CallbackWatcher();
AmbientTasks.BeginContext(ex => watcher.OnCallback());
await Task.Run(() =>
{
using (watcher.ExpectCallback())
AmbientTasks.Add(Task.FromException(new Exception()));
});
}
[PreventExecutionContextLeaks] // Workaround for https://github.com/nunit/nunit/issues/3283
public static void BeginContext_handler_receives_exception_thrown_from_func()
{
var exception = new Exception();
var watcher = new CallbackWatcher();
AmbientTasks.BeginContext(ex =>
{
watcher.OnCallback();
ex.ShouldBeSameAs(exception);
});
using (watcher.ExpectCallback())
AmbientTasks.Add(() => throw exception);
}
[PreventExecutionContextLeaks] // Workaround for https://github.com/nunit/nunit/issues/3283
public static void BeginContext_handler_receives_exceptions_from_synchronously_faulted_tasks()
{
var exception = new Exception();
var watcher = new CallbackWatcher();
AmbientTasks.BeginContext(ex =>
{
watcher.OnCallback();
ex.ShouldBeSameAs(exception);
});
using (watcher.ExpectCallback())
AmbientTasks.Add(Task.FromException(exception));
}
[PreventExecutionContextLeaks] // Workaround for https://github.com/nunit/nunit/issues/3283
public static void BeginContext_handler_receives_exceptions_from_asynchronously_faulted_tasks()
{
var source = new TaskCompletionSource <object?>();
var exception = new Exception();
var watcher = new CallbackWatcher();
AmbientTasks.BeginContext(ex =>
{
watcher.OnCallback();
ex.ShouldBeSameAs(exception);
});
AmbientTasks.Add(source.Task);
using (watcher.ExpectCallback())
source.SetException(exception);
}
[PreventExecutionContextLeaks] // Workaround for https://github.com/nunit/nunit/issues/3283
public static void Exception_from_user_delegate_is_handled_by_BeginContext_handler([Values] PostOverload overload)
{
var exception = new Exception();
var watcher = new CallbackWatcher();
AmbientTasks.BeginContext(ex =>
{
watcher.OnCallback();
ex.ShouldBeSameAs(exception);
});
using (SynchronizationContextAssert.ExpectSinglePost(postedAction => postedAction.Invoke()))
{
using (watcher.ExpectCallback())
AmbientTasksPost(overload, () => throw exception);
}
}
[PreventExecutionContextLeaks] // Workaround for https://github.com/nunit/nunit/issues/3283
public static void WaitAllAsync_should_have_single_AggregateException_with_all_three_exceptions_when_handler_throws_exception_twice()
{
var taskException = new Exception();
var handlerException1 = new Exception();
var handlerException2 = new Exception();
var watcher = new CallbackWatcher();
AmbientTasks.BeginContext(ex =>
{
watcher.OnCallback(out var callCount);
throw callCount == 1 ? handlerException1 : handlerException2;
});
using (watcher.ExpectCallback(count: 2))
AmbientTasks.Add(Task.FromException(taskException));
var waitAllTask = AmbientTasks.WaitAllAsync();
waitAllTask.Status.ShouldBe(TaskStatus.Faulted);
var aggregateException = waitAllTask.Exception !.InnerExceptions.ShouldHaveSingleItem().ShouldBeOfType <AggregateException>();
aggregateException.InnerExceptions.ShouldBe(new[] { taskException, handlerException1, handlerException2 });
}
