public void TestMouseScrollEventProducer_Callback()
{
/* PRECONDITIONS */
Debug.Assert(mouseModule != null);
Debug.Assert(mouseScrollEventProducer != null);
Debug.Assert(hookNativeMethodsMock != null);
Debug.Assert(hookNativeMethodsMock.Mock != null);
/* GIVEN */
//get the callback
GlobalHook.CppGetMessageCallback callback = GetCallback();
//setting up fake nativeMouseMock behaviors, messages and corresponding expected Events
GlobalHook.HookMessage[] hookMessages =
{
new GlobalHook.HookMessage {
Type = (uint)GlobalHook.MessageType.WM_MOUSEWHEEL, Hwnd = (IntPtr)1, wParam = (IntPtr)0x00780000, Data = new int[]{ 10, 100 }
},
new GlobalHook.HookMessage {
Type = (uint)GlobalHook.MessageType.WM_MOUSEWHEEL, Hwnd = (IntPtr)2, wParam = (IntPtr)0x00080000, Data = new int[]{ 20, 200 }
},
new GlobalHook.HookMessage {
Type = (uint)GlobalHook.MessageType.WM_MOUSEWHEEL, Hwnd = (IntPtr)23, wParam = (IntPtr)0xfff80000, Data = new int[]{ 54, 23 }
},
new GlobalHook.HookMessage {
Type = (uint)GlobalHook.MessageType.WM_MOUSEWHEEL, Hwnd = (IntPtr)43, wParam = (IntPtr)0xff880000, Data = new int[]{ 33, 101 }
}
};
MouseScrollEvent[] expectedEvents =
{
new MouseScrollEvent {
ScrollAmount = 120, HWnd = "1", MousePosition = new Point{
X = 10, Y = 100
}
},
new MouseScrollEvent {
ScrollAmount = 8, HWnd = "2", MousePosition = new Point{
X = 20, Y = 200
}
},
new MouseScrollEvent {
ScrollAmount = -8, HWnd = "23", MousePosition = new Point{
X = 54, Y = 23
}
},
new MouseScrollEvent {
ScrollAmount = -120, HWnd = "43", MousePosition = new Point{
X = 33, Y = 101
}
}
};
Assert.IsTrue(hookMessages.Length == expectedEvents.Length);
/* WHEN */
// consumedEvent.Signal() will be called gdw one event has been found and meet expectation
using var consumedEvent = new CountdownEvent(hookMessages.Length);
Assert.IsTrue(consumedEvent.CurrentCount == hookMessages.Length);
//didStartConsumingEvent.Set() will be called in Await method gdw the consumer is attached
using var didStartConsumingEvent = new ManualResetEvent(false);
//Running the task in another thread
var thread = new Thread(async() =>
{
await foreach (var @event in Await <IAsyncEnumerable <MouseScrollEvent> >(mouseScrollEventProducer.GetEvents(), didStartConsumingEvent))
{
if (!IsMouseScrollEventFound(@event, expectedEvents))
{
continue;
}
consumedEvent.Signal();
}
});
thread.Start();
// true if the consumer is attached!
Assert.IsTrue(didStartConsumingEvent.WaitOne(maxWaitTime));
// We must call the callback after the consumer is attached!
// otherwise the message is automatically dismissed.
foreach (GlobalHook.HookMessage message in hookMessages)
{
callback(message);
}
/* THEN */
//true if all events generated by the fake messages have meet expectation.
Assert.IsTrue(consumedEvent.Wait(maxWaitTime), "Did not find all matching mouse scroll events in time.");
//total shut down and resources release
mouseModule.IsActive = false;
mouseModule.Initialize(false);
}
