public void SetsReferenceToNull()
{
IDisposable myDisposable = DisposableFactory.CreateDisposable();
SafeDispose.DisposeAndSetNull(ref myDisposable);
Assert.Equal(null, myDisposable);
}
public void DisposeCalled()
{
bool disposeCalled = false;
IDisposable myDisposable = DisposableFactory.CreateDisposable(
() => disposeCalled = true);
SafeDispose.DisposeAndSetNull(ref myDisposable);
Assert.True(disposeCalled);
}
public void MultipleCallsSameReference()
{
int disposeCount = 0;
IDisposable myDisposable = DisposableFactory.CreateDisposable(
() => disposeCount++);
SafeDispose.DisposeAndSetNull(ref myDisposable);
// Here it should be null, so nothing will happen, should not throw either
SafeDispose.DisposeAndSetNull(ref myDisposable);
Assert.Equal(1, disposeCount);
}
public static void Main()
{
Console.WriteLine("Hello World");
var factory = new DisposableFactory();
IDisposable d;
var success = factory.TryGetDisposable(out d);
if (success)
{
using (d) {
}
}
using (factory.GetDisposableResults().Item2){
}
}
public void ThreadSafeMultipleDispose()
{
int disposalBegunCount = 0;
int disposalCompleteCount = 0;
var releaseDispose = new AutoResetEvent(false);
IDisposable myDisposable = DisposableFactory.CreateDisposable(
() =>
{
disposalBegunCount++;
releaseDispose.WaitOne();
disposalCompleteCount++;
});
Assert.Equal(0, disposalBegunCount);
Assert.Equal(0, disposalCompleteCount);
var dispose1Task = Task.Run(
() => SafeDispose.DisposeAndSetNull(ref myDisposable));
var dispose2Task = Task.Run(
() => SafeDispose.DisposeAndSetNull(ref myDisposable));
// Give them some time to start up
Thread.Sleep(TimeSpan.FromSeconds(0.5));
Assert.Equal(1, disposalBegunCount);
Assert.Equal(0, disposalCompleteCount);
releaseDispose.Set();
// Give the tasks time to finish disposal
dispose1Task.Wait();
dispose2Task.Wait();
Assert.Equal(1, disposalBegunCount);
Assert.Equal(1, disposalCompleteCount);
// Extra releases should do nothing
releaseDispose.Set();
releaseDispose.Set();
releaseDispose.Set();
Assert.Equal(1, disposalBegunCount);
Assert.Equal(1, disposalCompleteCount);
}
