public void Test_Not_Cacheable_No_Content()
{
var cachingHandler = new CachingHandler();
var response = new HttpResponseMessage(HttpStatusCode.OK);
response.Headers.CacheControl = new CacheControlHeaderValue(){Public = true};
Assert.AreEqual(cachingHandler.ResponseValidator(response), ResponseValidationResult.NotCacheable);
}
public void Test_NoCache_IsCacheable_And_NotStale_But_MustRevalidate()
{
var cachingHandler = new CachingHandler();
var response = new HttpResponseMessage(HttpStatusCode.OK);
response.Headers.CacheControl = new CacheControlHeaderValue() { Public = true, NoCache = true};
response.Content = new ByteArrayContent(new byte[256]);
response.Content.Headers.Expires = DateTimeOffset.Now.AddHours(1); // resource is not stale
Assert.AreEqual(cachingHandler.ResponseValidator(response), ResponseValidationResult.MustRevalidate);
}
public void Setup()
{
_mockRepository = new MockRepository();
_cacheStore = _mockRepository.StrictMock<ICacheStore>();
_messageHandler = new DummyMessageHandler();
_cachingHandler = new CachingHandler(_cacheStore)
{
InnerHandler = _messageHandler
};
_client = new HttpClient(_cachingHandler);
}
public void Test_Stale_By_Expires()
{
var cachingHandler = new CachingHandler();
cachingHandler.MustRevalidateByDefault = false;
var response = new HttpResponseMessage(HttpStatusCode.OK);
response.Headers.CacheControl = new CacheControlHeaderValue() { Public = true };
response.Content = new ByteArrayContent(new byte[256]);
response.Content.Headers.Expires = DateTimeOffset.UtcNow.AddDays(-1);
Assert.AreEqual(cachingHandler.ResponseValidator(response), ResponseValidationResult.Stale);
}
public void Test_Stale_By_Age()
{
var cachingHandler = new CachingHandler();
var response = new HttpResponseMessage(HttpStatusCode.OK);
response.Headers.CacheControl = new CacheControlHeaderValue()
{
Public = true,
MaxAge = TimeSpan.FromSeconds(200)
};
response.Headers.Date = DateTimeOffset.UtcNow.AddDays(-1);
response.Content = new ByteArrayContent(new byte[256]);
Assert.AreEqual(cachingHandler.ResponseValidator(response), ResponseValidationResult.MustRevalidate);
}
public void TestMemoryLeak()
{
var memorySize64 = Process.GetCurrentProcess().PrivateMemorySize64;
for (int i = 0; i < 200; i++)
{
var store = new CachingHandler();
//Thread.Sleep(1);
store.Dispose();
GC.Collect();
GC.WaitForPendingFinalizers();
if(Process.GetCurrentProcess().PrivateMemorySize64 - memorySize64 > 2 * 1024 * 1024)
Assert.Fail("Memory leak");
}
}
static void Main(string[] args)
{
ThreadPool.SetMinThreads(200, 200);
var crawler = new Crawler();
var fileStore = new FileStore(Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "Cache"));
var cachingHandler = new CachingHandler(fileStore)
{
InnerHandler = new HttpClientHandler()
};
crawler.Requester = new HttpClient(cachingHandler);
if(ConfigurationManager.ConnectionStrings["UrlStore"]!=null)
crawler.Store = new UrlStore();
crawler.Crawl("http://YAHOO.COM");
Console.Read();
}
public void DoesNotDisposeVaryHeaderStoreIfPassedToIt()
{
var mockcs = new Moq.Mock<ICacheStore>();
var mockvh = new Moq.Mock<IVaryHeaderStore>(MockBehavior.Strict);
var handler = new CachingHandler(mockcs.Object, mockvh.Object);
handler.Dispose();
mockvh.Verify();
}
public void DoesNotDisposeCacheStoreIfPassedToIt()
{
var mock = new Moq.Mock<ICacheStore>(MockBehavior.Strict);
var handler = new CachingHandler(mock.Object);
handler.Dispose();
mock.Verify();
}
public void DefaultExceptionPolicy_Throws_CacheStore_Exceptions()
{
// setup
var request = new HttpRequestMessage(HttpMethod.Put, DummyUrl);
var responseFromServer = GetOkMessage();
_messageHandler.Response = responseFromServer;
_cacheStore = new FaultyCacheStore();
_cachingHandler = new CachingHandler(_cacheStore)
{
InnerHandler = _messageHandler
};
_client = new HttpClient(_cachingHandler);
// run
var task = _client.SendAsync(request);
var responseReturned = task.Result;
}
public void IgnoreExceptionPolicy_Ignores_CacheStore_Exceptions()
{
// setup
var request = new HttpRequestMessage(HttpMethod.Put, DummyUrl);
var responseFromServer = GetOkMessage();
_messageHandler.Response = responseFromServer;
_cacheStore = new FaultyCacheStore();
_cachingHandler = new CachingHandler(_cacheStore)
{
InnerHandler = _messageHandler
};
_cachingHandler.ExceptionHandler = CachingHandler.IgnoreExceptionPolicy;
_client = new HttpClient(_cachingHandler);
// run
var task = _client.SendAsync(request);
var responseReturned = task.Result;
// verify
Assert.AreEqual(responseFromServer, responseReturned);
}
public void Test_Not_Cacheable_StatusCode(HttpStatusCode code)
{
var cachingHandler = new CachingHandler();
var response = new HttpResponseMessage(code);
Assert.AreEqual(cachingHandler.ResponseValidator(response), ResponseValidationResult.NotCacheable);
}