public void Post()
{
// Arrange
Mock <SynchronizationContext> mockSyncContext = new Mock <SynchronizationContext>();
mockSyncContext
.Expect(c => c.Send(It.IsAny <SendOrPostCallback>(), null))
.Callback(
delegate(SendOrPostCallback d, object state) {
d(state);
});
AsyncManager helper = new AsyncManager(mockSyncContext.Object);
bool wasCalled = false;
// Act
helper.Post(() => { wasCalled = true; });
// Assert
Assert.IsTrue(wasCalled);
}