public void Init()
{
_gauge = new FakeGauge();
_requestDelegate = context => Task.CompletedTask;
_sut = new HttpInProgressMiddleware(_requestDelegate, _gauge);
}
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);
}
public void Setup()
{
_registry = Metrics.NewCustomRegistry();
_factory = Metrics.WithCustomRegistry(_registry);
_inProgressMiddleware =
new HttpInProgressMiddleware(next => Task.CompletedTask, _factory.CreateGauge("in_progress", "help"));
_countMiddleware =
new HttpRequestCountMiddleware(next => Task.CompletedTask, _factory.CreateCounter("count", "help"));
_durationMiddleware =
new HttpRequestDurationMiddleware(next => Task.CompletedTask, _factory.CreateHistogram("duration", "help"));
}
