public void CanThrottle1Per3Seconds()
{
var f = new TestRequestFactory();
var t = new ThrottedRequestQueue(TimeSpan.FromSeconds(3), 1, 10);
var sw = new Stopwatch();
sw.Start();
var handles = new List<WaitHandle>();
for (int i = 0; i < 3; i++)
{
var gate = new AutoResetEvent(false);
handles.Add(gate);
f.CreateTestRequest("foo" + i);
const string url = "http://tmpuri.org";
var r = f.Create(url);
int i1 = i;
t.Enqueue(url, r, (ar, ignored) =>
{
string expected = "foo" + i1;
var response = r.EndGetResponse(ar);
var actual = new StreamReader(response.GetResponseStream()).ReadToEnd();
Trace.WriteLine(actual);
Assert.AreEqual(expected, actual);
gate.Set();
});
}
WaitHandle.WaitAll(handles.ToArray());
sw.Stop();
Assert.GreaterOrEqual(sw.ElapsedMilliseconds, 5800, "3 requests, 2 throttled - expect almost 6 seconds delay for 3 requests");
}
public void CanInduceLatencyInAsyncGetResponse()
{
const int desiredLatencyMs = 200;
var f = new TestRequestFactory();
const string expected = "foo";
f.CreateTestRequest(expected, TimeSpan.FromMilliseconds(desiredLatencyMs), null, null, null);
WebRequest r = f.Create("http://testuri.org");
var sw = new Stopwatch();
sw.Start();
string actual = "";
using (var gate = new ManualResetEvent(false))
{
r.BeginGetResponse(ar =>
{
WebResponse response = r.EndGetResponse(ar);
actual = new StreamReader(response.GetResponseStream()).ReadToEnd();
gate.Set();
}, null);
gate.WaitOne(TimeSpan.FromSeconds(2));
}
sw.Stop();
Assert.AreEqual(expected, actual);
Assert.GreaterOrEqual(sw.ElapsedMilliseconds, desiredLatencyMs - 50, "incorrect latency");
// TODO: Sometimes this seems to take *much* longer on the build server
// Assert.LessOrEqual(sw.ElapsedMilliseconds, desiredLatencyMs + 50, "incorrect latency");
}
public void CanThrowExceptionOnRequestStream()
{
var f = new TestRequestFactory();
f.CreateTestRequest("", TimeSpan.FromMilliseconds(0), new Exception("request stream exception"), null, null);
WebRequest r = f.Create("http://testuri.org");
r.GetRequestStream();
Assert.Fail("Expected exception");
}
public void CanCreateTestRequest()
{
var f = new TestRequestFactory();
const string expected = "foo";
f.CreateTestRequest(expected);
WebRequest r = f.Create("http://testuri.org");
string actual = new StreamReader(r.GetResponse().GetResponseStream()).ReadToEnd();
Assert.AreEqual(expected, actual);
}
public void CanInduceLatencyInSyncGetResponse()
{
const int desiredLatencyMs = 200;
var f = new TestRequestFactory();
const string expected = "foo";
f.CreateTestRequest(expected, TimeSpan.FromMilliseconds(desiredLatencyMs), null, null, null);
WebRequest webRequest = f.Create("http://testuri.org");
var sw = new Stopwatch();
sw.Start();
var actual = new StreamReader(webRequest.GetResponse().GetResponseStream()).ReadToEnd();
sw.Stop();
Assert.AreEqual(expected, actual);
Assert.GreaterOrEqual(sw.ElapsedMilliseconds, desiredLatencyMs - 50, "incorrect latency");
// TODO: Sometimes this seems to take *much* longer on the build server
// Assert.LessOrEqual(sw.ElapsedMilliseconds, desiredLatencyMs + 50, "incorrect latency");
}
public void CanThrottle30Per5Seconds()
{
var f = new TestRequestFactory();
var t = new ThrottedRequestQueue(TimeSpan.FromSeconds(5), 30, 10);
var sw = new Stopwatch();
sw.Start();
var gate = new AutoResetEvent(false);
for (int i = 0; i < 65; i++)
{
f.CreateTestRequest("foo" + i);
const string url = "http://tmpuri.org";
var r = f.Create(url);
int i1 = i;
t.Enqueue(url, r, (ar, ignored) =>
{
string expected = "foo" + i1;
var response = r.EndGetResponse(ar);
var actual = new StreamReader(response.GetResponseStream()).ReadToEnd();
Assert.AreEqual(expected, actual);
if (i1 == 64)
{
gate.Set();
}
});
}
gate.WaitOne();
sw.Stop();
Assert.GreaterOrEqual(sw.ElapsedMilliseconds, 10000, "65 requests - expect > 10 seconds delay for 65 requests");
}