public void IsTheOnlyRunningInstance_WillReturnFalse_WhenOtherInstanceRunningAlready()
{
ManualResetEvent eventOtherAppStarted = new ManualResetEvent(false);
var threadOtherAppInstance = new Thread((object instanceStartedRaw) =>
{
var otherGuard = new Fake_SingleAppInstanceGuard()
{
ForcedNameOfSystemWideSyncEvent = "C--fake-sync-event--"
};
otherGuard.OnAppStartup();
(instanceStartedRaw as ManualResetEvent).Set();
otherGuard.WaitForShowRunningInstanceRequest();
// otherGuard.Dispose();
});
threadOtherAppInstance.Start(eventOtherAppStarted);
eventOtherAppStarted.WaitOne();
var guard = new Fake_SingleAppInstanceGuard()
{
ForcedNameOfSystemWideSyncEvent = "C--fake-sync-event--"
};
guard.OnAppStartup();
bool isTheOnlyRunning = guard.IsTheOnlyRunningInstance();
Assert.IsFalse(isTheOnlyRunning);
threadOtherAppInstance.Join(); // clean-up
guard.Dispose();
}
public void OnAppStartup_WillUnblockWaitingOfPreviousRunningAppInstance_Always()
{
ManualResetEvent eventOtherAppStarted = new ManualResetEvent(false);
var threadOtherAppInstance = new Thread((object instanceStartedRaw) =>
{
var otherGuard = new Fake_SingleAppInstanceGuard()
{
ForcedNameOfSystemWideSyncEvent = "A--fake-sync-event--"
};
otherGuard.OnAppStartup();
(instanceStartedRaw as ManualResetEvent).Set();
otherGuard.WaitForShowRunningInstanceRequest();
otherGuard.Dispose();
});
threadOtherAppInstance.Start(eventOtherAppStarted);
eventOtherAppStarted.WaitOne();
var guard = new Fake_SingleAppInstanceGuard()
{
ForcedNameOfSystemWideSyncEvent = "A--fake-sync-event--"
};
guard.OnAppStartup();
// implicit Assert: fail when Join() never happens
threadOtherAppInstance.Join();
guard.Dispose();
}
public void IsTheOnlyRunningInstance_WillReturnTrue_WhenNoOtherInstanceIsRunning()
{
var guard = new Fake_SingleAppInstanceGuard()
{
ForcedNameOfSystemWideSyncEvent = "B--fake-sync-event--"
};
guard.OnAppStartup();
bool isTheOnlyRunning = guard.IsTheOnlyRunningInstance();
Assert.IsTrue(isTheOnlyRunning);
guard.Dispose();
}
public void Dispose_WillAllowNextInstanceToBeTheOnlyRunningInstance_Always()
{
using (var guard = new Fake_SingleAppInstanceGuard())
{
guard.ForcedNameOfSystemWideSyncEvent = "E--fake-sync-event--";
guard.OnAppStartup();
} // will call Dispose() implicitly
var guard2 = new Fake_SingleAppInstanceGuard()
{
ForcedNameOfSystemWideSyncEvent = "E--fake-sync-event--"
};
guard2.OnAppStartup();
Assert.IsTrue(guard2.IsTheOnlyRunningInstance());
guard2.Dispose();
}
public void OnBeforeAppShutDown_WillAllowNextInstanceToBeTheOnlyRunningInstance_Always()
{
var guard = new Fake_SingleAppInstanceGuard()
{
ForcedNameOfSystemWideSyncEvent = "D--fake-sync-event--"
};
guard.OnAppStartup();
guard.OnBeforeAppShutDown();
var guard2 = new Fake_SingleAppInstanceGuard()
{
ForcedNameOfSystemWideSyncEvent = "D--fake-sync-event--"
};
guard2.OnAppStartup();
Assert.IsTrue(guard2.IsTheOnlyRunningInstance());
guard.Dispose();
guard2.Dispose();
}