public void TryEnterAndReleaseALot()
{
var semaphore = new SemaphoreSlimIsolationSemaphore(GroupKey.Named("Test"), new TransientConfigurableValue<int>(5), new IgnoringStats());
Assert.True(semaphore.TryEnter());
Assert.True(semaphore.TryEnter());
Assert.True(semaphore.TryEnter());
Assert.True(semaphore.TryEnter());
Assert.True(semaphore.TryEnter());
Assert.False(semaphore.TryEnter());
Assert.False(semaphore.TryEnter());
Assert.False(semaphore.TryEnter());
semaphore.Release();
Assert.True(semaphore.TryEnter());
Assert.False(semaphore.TryEnter());
semaphore.Release();
semaphore.Release();
semaphore.Release();
semaphore.Release();
semaphore.Release();
Assert.True(semaphore.TryEnter());
Assert.True(semaphore.TryEnter());
Assert.True(semaphore.TryEnter());
semaphore.Release();
Assert.True(semaphore.TryEnter());
Assert.True(semaphore.TryEnter());
Assert.True(semaphore.TryEnter());
Assert.False(semaphore.TryEnter());
Assert.False(semaphore.TryEnter());
semaphore.Release();
semaphore.Release();
semaphore.Release();
semaphore.Release();
semaphore.Release();
}
public void TryEnter_WhenSemaphoreIsAvailable_ReturnsTrueImmediately()
{
var semaphore = new SemaphoreSlimIsolationSemaphore(GroupKey.Named("Test"), new TransientConfigurableValue<int>(1), new IgnoringStats());
var stopwatch = Stopwatch.StartNew();
Assert.True(semaphore.TryEnter());
Assert.True(stopwatch.ElapsedMilliseconds < 10);
}
public void Release_WhenSemaphoreNotAvailable_MakesItAvailable()
{
var semaphore = new SemaphoreSlimIsolationSemaphore(GroupKey.Named("Test"), new TransientConfigurableValue<int>(1), new IgnoringStats());
semaphore.TryEnter();
Assert.False(semaphore.TryEnter());
semaphore.Release();
Assert.True(semaphore.TryEnter());
}
public async Task Construct_CreatesGauges()
{
const long gaugeIntervalMillis = 50;
var mockStats = new Mock<IStats>();
var semaphore = new SemaphoreSlimIsolationSemaphore(GroupKey.Named("Test"), new TransientConfigurableValue<int>(10), mockStats.Object, new TransientConfigurableValue<long>(gaugeIntervalMillis));
await Task.Delay(TimeSpan.FromMilliseconds(gaugeIntervalMillis + 50));
mockStats.Verify(m => m.Gauge("mjolnir fallback-semaphore Test available", "Available", 10), Times.AtLeastOnce);
}
public void Release_WhenSemaphoreNotInUse_DoesNothing()
{
var semaphore = new SemaphoreSlimIsolationSemaphore(GroupKey.Named("Test"), new TransientConfigurableValue<int>(5), new IgnoringStats());
semaphore.Release(); // Shouldn't throw.
}