public async Task TaskExtensions_ValueTaskOfTEnsureCompleted_NotCompletedNoSyncContext()
{
var tcs = new TaskCompletionSource <int>();
ValueTask <int> task = new ValueTask <int>(tcs.Task);
#if DEBUG
Assert.Catch <InvalidOperationException>(() => task.EnsureCompleted());
await Task.CompletedTask;
#else
Task <int> runningTask = Task.Run(() => task.EnsureCompleted());
Assert.IsFalse(runningTask.IsCompleted);
tcs.SetResult(42);
Assert.AreEqual(42, await runningTask);
#endif
}
public void TaskExtensions_ValueTaskOfTEnsureCompleted_NotCompletedInSyncContext()
{
using SingleThreadedSynchronizationContext syncContext = new SingleThreadedSynchronizationContext();
var tcs = new TaskCompletionSource <int>();
var task = new ValueTask <int>(tcs.Task);
syncContext.Post(t => { Assert.Catch <InvalidOperationException>(() => task.EnsureCompleted()); }, null);
}
public void TaskExtensions_ValueTaskOfTEnsureCompleted()
{
var task = new ValueTask <int>(42);
Assert.AreEqual(42, task.EnsureCompleted());
}
public void TaskExtensions_ValueTaskEnsureCompleted()
{
var task = new ValueTask();
task.EnsureCompleted();
}