public async Task InlinedSendReappliesSyncContextWhenSticky()
{
var sticky = new NonConcurrentSynchronizationContext(sticky: true);
var tcs = new TaskCompletionSource <object?>();
sticky.Post(
_ =>
{
try
{
SynchronizationContext.SetSynchronizationContext(new SynchronizationContext());
sticky.Send(
_ =>
{
Assert.Same(sticky, SynchronizationContext.Current);
},
null);
Assert.IsType <SynchronizationContext>(SynchronizationContext.Current);
tcs.TrySetResult(null);
}
catch (Exception ex)
{
tcs.TrySetException(ex);
}
},
null);
await tcs.Task.WithCancellation(this.TimeoutToken);
}
public async Task SyncContextIsNotInherited()
{
// Set a SyncContext when creating the context, and ensure the current context is never used.
SynchronizationContext.SetSynchronizationContext(new ThrowingSyncContext());
var nonConcurrentContext = new NonConcurrentSynchronizationContext(sticky: false);
// Also confirm the current context doesn't impact the Post method.
Assert.Null(await GetCurrentSyncContextDuringPost(nonConcurrentContext).ConfigureAwait(false));
}
public async Task Sticky_SetsCurrentSyncContext()
{
var sticky = new NonConcurrentSynchronizationContext(sticky: true);
Assert.Same(sticky, await GetCurrentSyncContextDuringPost(sticky));
}