public void BasicTest()
{
var l = new AsyncReaderWriterLockSlim();
var vt1 = l.AcquireReaderLockAsync();
var vt2 = l.AcquireReaderLockAsync();
var vt3 = l.AcquireWriterLockAsync();
Assert.True(vt1.IsCompletedSuccessfully);
Assert.True(vt2.IsCompletedSuccessfully);
Assert.False(vt3.IsCompleted);
vt1.GetAwaiter().GetResult();
vt2.GetAwaiter().GetResult();
l.ReleaseReaderLock();
l.ReleaseReaderLock();
Assert.True(vt3.IsCompletedSuccessfully);
vt1 = l.AcquireReaderLockAsync();
vt2 = l.AcquireReaderLockAsync();
Assert.False(vt1.IsCompleted);
Assert.False(vt2.IsCompleted);
vt3.GetAwaiter().GetResult();
l.ReleaseWriterLock();
Assert.True(vt1.IsCompletedSuccessfully);
Assert.True(vt2.IsCompletedSuccessfully);
}