Given_multiple_completed_parallel_requests_gauge_is_incremented_and_decremented_correct_number_of_times()
{
await Task.WhenAll(_sut.Invoke(new DefaultHttpContext()), _sut.Invoke(new DefaultHttpContext()),
_sut.Invoke(new DefaultHttpContext()));
Assert.AreEqual(3, _gauge.IncrementCount);
Assert.AreEqual(3, _gauge.DecrementCount);
Assert.AreEqual(0, _gauge.Value);
}
public async Task HttpInProgress()
{
for (var i = 0; i < RequestCount; i++)
{
await _inProgressMiddleware.Invoke(new DefaultHttpContext());
}
}
public async Task Given_request_throws_then_InProgressGauge_is_decreased()
{
_requestDelegate = context => throw new InvalidOperationException();
_sut = new HttpInProgressMiddleware(_requestDelegate, _gauge);
await Assert.ThrowsExceptionAsync <InvalidOperationException>(() => _sut.Invoke(new DefaultHttpContext()));
Assert.AreEqual(1, _gauge.IncrementCount);
Assert.AreEqual(1, _gauge.DecrementCount);
Assert.AreEqual(0, _gauge.Value);
}
