public async Task ThrottleSimultaneousApiCalls()
{
// Arrange
var rounds = 3;
var maxRequestsPerSecond = 50;
var throttleRequests = new ThrottleRequestsPerSecond(maxRequestsPerSecond);
var tasks = new List <Task>();
// Act
var stopWatch = Stopwatch.StartNew();
for (int i = 0; i < rounds * maxRequestsPerSecond; i++)
{
tasks.Add(throttleRequests.WaitAsync());
}
await Task.WhenAll(tasks);
var elapsed = stopWatch.ElapsedMilliseconds;
// Assert
var delayForTwoRequests = 1000 / maxRequestsPerSecond * 2;
Assert.IsTrue(elapsed > (rounds * 1000 - delayForTwoRequests), $"Elapsed: {elapsed}");
}
public async Task ThrottleIndividualApiCalls()
{
// Arrange
var maxRequestsPerSecond = 20;
var throttleRequests = new ThrottleRequestsPerSecond(maxRequestsPerSecond);
var totalTime = new TimeSpan(0, 0, 1);
var loopCount = 0;
// Act
var stopWatch = Stopwatch.StartNew();
while (true)
{
await throttleRequests.WaitAsync();
if (stopWatch.Elapsed >= totalTime)
{
stopWatch.Stop();
break;
}
loopCount++;
}
// Assert
Assert.IsTrue(loopCount <= maxRequestsPerSecond, $"Loopcount: {loopCount}");
}