public void Start_WhenTestMessageSent_ThenWatchedDeviceIsNotObserved()
{
// ARRANGE
IUsbDeviceNotification deviceArrived = null;
var testScheduler = new TestScheduler();
var mockedHandle = new Mock <IHandle>();
var mockedProcessHandleResult = new Mock <IProcessHandleResult>();
var guid = Guid.NewGuid();
var testMessage = new Message {
Msg = 1
};
var usbDeviceWatcher = SetupTestDeviceWatcherWithHandleCreated(
testScheduler,
mockedHandle,
guid,
testMessage);
mockedHandle.Setup(x => x.ProcessFor(usbDeviceWatcher)).Returns(mockedProcessHandleResult.Object);
// ACT
usbDeviceWatcher.AllDeviceNotifications().Subscribe(next => deviceArrived = next);
testScheduler.Start();
usbDeviceWatcher.SimulateMessage(testMessage);
// ASSERT
Assert.Null(deviceArrived);
}
public void Start_WhenObserver_ThenThreadIdShouldBeDifferentToSubscriptionThread()
{
// ARRANGE
IUsbDeviceNotification deviceArrived = null;
var testScheduler = new TestScheduler();
var mockedHandle = new Mock <IHandle>();
var mockedProcessHandleResult = new Mock <IProcessHandleResult>();
var guid = Guid.NewGuid();
var deviceChangeMessage = new Message {
Msg = 0x219
};
var usbDeviceWatcher = SetupTestDeviceWatcherWithHandleCreated(testScheduler, mockedHandle, guid, deviceChangeMessage);
var currentThreadId = Thread.CurrentThread.ManagedThreadId;
var observerdThreadId = -1;
var manualResetEventSlim = new ManualResetEventSlim(false);
mockedHandle.Setup(x => x.ProcessFor(usbDeviceWatcher)).Returns(mockedProcessHandleResult.Object);
// ACT
usbDeviceWatcher.AllDeviceNotifications().Subscribe(next =>
{
observerdThreadId = Thread.CurrentThread.ManagedThreadId;
deviceArrived = next;
manualResetEventSlim.Set();
});
testScheduler.Start();
usbDeviceWatcher.SimulateMessage(deviceChangeMessage);
manualResetEventSlim.Wait();
// ASSERT
Assert.NotEqual(currentThreadId, observerdThreadId);
Assert.NotNull(deviceArrived);
}
public void Start_WhenDeviceChangedMessageSentAndExceptionOccurs_ThenDeviceIsNotObserved()
{
// ARRANGE
IUsbDeviceNotification deviceArrived = null;
var testScheduler = new TestScheduler();
var mockedHandle = new Mock <IHandle>();
var mockedProcessHandleResult = new Mock <IProcessHandleResult>();
var guid = Guid.NewGuid();
var message = new Message {
Msg = 0x219
};
const bool mockedMarshalWrapperThrowsException = true;
var usbDeviceWatcher = SetupTestDeviceWatcherWithHandleCreated(testScheduler, mockedHandle, guid, message, null, mockedMarshalWrapperThrowsException);
var manualResetEventSlim = new ManualResetEventSlim(false);
mockedHandle.Setup(x => x.ProcessFor(usbDeviceWatcher)).Returns(mockedProcessHandleResult.Object);
// ACT
usbDeviceWatcher.AllDeviceNotifications()
.Subscribe(
next =>
{
deviceArrived = next;
manualResetEventSlim.Set();
},
error => manualResetEventSlim.Set());
testScheduler.Start();
usbDeviceWatcher.SimulateMessage(message);
manualResetEventSlim.Wait();
// ASSERT
Assert.Null(deviceArrived);
}
public void StartAndAttachedDevices_WhenStartDisposed_ThenAttachedDevicesStillReceivesNotification()
{
// ARRANGE
var manualResetEventSlim = new ManualResetEventSlim(false);
var testScheduler = new TestScheduler();
var mockedHandle = new Mock <IHandle>();
var mockedProcessHandleResult = new Mock <IProcessHandleResult>();
var guid = Guid.NewGuid();
var message = new Message {
Msg = 0x219, WParam = new IntPtr(0x8000)
};
var usbDeviceWatcher = SetupTestDeviceWatcherWithHandleCreated(testScheduler, mockedHandle, guid, message);
IUsbDeviceNotification nextObservedFromStart = null;
IUsbDeviceNotification nextObservedFromAttachedDevices = null;
mockedHandle.Setup(x => x.ProcessFor(usbDeviceWatcher))
.Returns(mockedProcessHandleResult.Object)
.Verifiable();
// ACT
var disposable = usbDeviceWatcher.AllDeviceNotifications().Subscribe(next =>
{
nextObservedFromStart = next;
});
disposable.Dispose();
usbDeviceWatcher.ArrivedDeviceNotificationsOnly().Subscribe(next =>
{
nextObservedFromAttachedDevices = next;
manualResetEventSlim.Set();
});
testScheduler.Start();
// ASSERT
manualResetEventSlim.Wait();
Assert.Null(nextObservedFromStart);
Assert.NotNull(nextObservedFromAttachedDevices);
}
