public void Execute_FailsUntilRetryCountExceeded_ThrowsExceptionWithProperRetryStack()
{
var expectedUri = "test://queue.abc/whatever/";
const string message = "message";
var expectedRawRequest = new TestableWebRequest(new Uri(expectedUri))
.EnqueueResponse(new TimeoutException(message + "1"))
.EnqueueResponse(new TimeoutException(message + "2"))
.EnqueueResponse(new TimeoutException(message + "3"));
TestableWebRequestCreateFactory.GetFactory().AddRequest(expectedRawRequest);
var request = new RequestWithEmptyPayload(new SettingsFake(), expectedUri, "GET");
request.RetryPolicy = new RetryPolicy <ExceptionRetryStrategy>(2, TimeSpan.FromMilliseconds(1));
try
{
// Act
request.Execute();
//Assert, starting with catching the specific exception type
}
catch (RetriedException exc)
{
Assert.AreEqual(3, exc.Count);
Assert.AreEqual(exc.Count, exc.ExceptionRetryStack.Count);
var currentExceptionIndex = 3;
foreach (var exception in exc.ExceptionRetryStack)
{
Assert.IsInstanceOf <GeneralExceptionDuringAzureOperationException>(exception);
Assert.IsInstanceOf <TimeoutException>(exception.InnerException);
Assert.AreEqual(exception.InnerException.Message, message + currentExceptionIndex);
currentExceptionIndex--; // stack is LIFO
}
}
}
public void Execute_SuccessfulOperation_MarksResponseAsSuccessfull()
{
var expectedUri = "test://queue.abc/whatever/";
var expectedRawRequest = new TestableWebRequest(new Uri(expectedUri));
expectedRawRequest.EnqueueResponse(HttpStatusCode.OK, "Success", "Response content", false);
TestableWebRequestCreateFactory.GetFactory().AddRequest(expectedRawRequest);
var request = new RequestWithEmptyPayload(new SettingsFake(), expectedUri, "GET");
var response = request.Execute();
Assert.AreEqual(HttpStatusCode.OK, response.HttpStatus);
}
public void Execute_TimeoutException_AttemptsToRetry()
{
var expectedUri = "test://queue.abc/whatever/";
var expectedRawRequest = new TestableWebRequest(new Uri(expectedUri))
.EnqueueResponse(new TimeoutException("message"))
.EnqueueResponse(HttpStatusCode.OK, "Success", "Even More Success", false);
TestableWebRequestCreateFactory.GetFactory().AddRequest(expectedRawRequest);
var request = new RequestWithEmptyPayload(new SettingsFake(), expectedUri, "GET");
var response = request.Execute();
Assert.AreEqual(2, response.NumberOfAttempts);
}
public void Execute_SuccessfulOperation_MarksResponseAsSuccessfull()
{
var expectedUri = "test://queue.abc/whatever/";
var expectedRawRequest = new TestableWebRequest(new Uri(expectedUri));
expectedRawRequest.EnqueueResponse(HttpStatusCode.OK, "Success", "Response content", false);
TestableWebRequestCreateFactory.GetFactory().AddRequest(expectedRawRequest);
var request = new RequestWithEmptyPayload(new SettingsFake(), expectedUri, "GET");
var response = request.Execute();
Assert.AreEqual(HttpStatusCode.OK, response.HttpStatus);
}
public void Execute_ReceivesStatusError_AttemptsToRetry(string errorCode, int httpStatus, string errorMessage)
{
var expectedUri = "test://queue.abc/whatever/";
var azureErrorMessage = String.Format("<?xml version=\"1.0\" encoding=\"utf-8\"?><Error><Code>{0}</Code><Message>{1}</Message></Error>", errorCode, errorMessage);
var expectedRawRequest = new TestableWebRequest(new Uri(expectedUri))
.EnqueueResponse((HttpStatusCode)httpStatus, errorCode, azureErrorMessage, true)
.EnqueueResponse(HttpStatusCode.OK, "Success", "Response content", false);
TestableWebRequestCreateFactory.GetFactory().AddRequest(expectedRawRequest);
var request = new RequestWithEmptyPayload(new SettingsFake(), expectedUri, "GET");
var response = request.Execute();
Assert.AreEqual(2, response.NumberOfAttempts);
}
public void Execute_TimeoutException_AttemptsToRetry()
{
var expectedUri = "test://queue.abc/whatever/";
var expectedRawRequest = new TestableWebRequest(new Uri(expectedUri))
.EnqueueResponse(new TimeoutException("message"))
.EnqueueResponse(HttpStatusCode.OK, "Success", "Even More Success", false);
TestableWebRequestCreateFactory.GetFactory().AddRequest(expectedRawRequest);
var request = new RequestWithEmptyPayload(new SettingsFake(), expectedUri, "GET");
var response = request.Execute();
Assert.AreEqual(2, response.NumberOfAttempts);
}
public void Execute_ReceiveTransientExceptionThenNonTransient_ThrowsNonTransient()
{
var expectedUri = "test://queue.abc/whatever/";
var expectedRawRequest = new TestableWebRequest(new Uri(expectedUri))
.EnqueueResponse(new WebException("Azure hung up after the initial request", new SocketException(1), WebExceptionStatus.ReceiveFailure, null))
.EnqueueResponse(HttpStatusCode.Conflict, "QueueAlreadyExists", queueAlreadyExistsExceptionText, true);
TestableWebRequestCreateFactory.GetFactory().AddRequest(expectedRawRequest);
var request = new RequestWithEmptyPayload(new SettingsFake(), expectedUri, "GET");
request.Execute();
// expected non transient exception
}
public void Execute_ReceiveFailureException_AttemptsToRetry()
{
var expectedUri = "test://queue.abc/whatever/";
var expectedRawRequest = new TestableWebRequest(new Uri(expectedUri))
.EnqueueResponse(new WebException("Azure hung up after the initial request", new SocketException(1), WebExceptionStatus.ReceiveFailure, null))
.EnqueueResponse(HttpStatusCode.OK, "Success", "Even More Success", false);
TestableWebRequestCreateFactory.GetFactory().AddRequest(expectedRawRequest);
var request = new RequestWithEmptyPayload(new SettingsFake(), expectedUri, "GET");
var response = request.Execute();
Assert.AreEqual(2, response.NumberOfAttempts);
}
public void Execute_ExpectingEmptyPayload_ConsumesResponseStream()
{
var expectedUri = "test://queue.abc/whatever/";
var expectedRawRequest = new TestableWebRequest(new Uri(expectedUri));
var expectedRawResponse = new HttpResponseSettings(HttpStatusCode.OK, "Success", "Response content", false);
expectedRawRequest.EnqueueResponse(expectedRawResponse);
TestableWebRequestCreateFactory.GetFactory().AddRequest(expectedRawRequest);
var request = new RequestWithEmptyPayload(new SettingsFake(), expectedUri, "GET");
var response = request.Execute();
// expect the response stream to be closed now
long x;
Assert.Throws<ObjectDisposedException>(() => x = expectedRawResponse.ResponseStream.Position);
}
public void Execute_ReceivesStatusError_AttemptsToRetry(string errorCode, int httpStatus, string errorMessage)
{
var expectedUri = "test://queue.abc/whatever/";
var azureErrorMessage = String.Format("<?xml version=\"1.0\" encoding=\"utf-8\"?><Error><Code>{0}</Code><Message>{1}</Message></Error>", errorCode, errorMessage);
var expectedRawRequest = new TestableWebRequest(new Uri(expectedUri))
.EnqueueResponse((HttpStatusCode)httpStatus, errorCode, azureErrorMessage, true)
.EnqueueResponse(HttpStatusCode.OK, "Success", "Response content", false);
TestableWebRequestCreateFactory.GetFactory().AddRequest(expectedRawRequest);
var request = new RequestWithEmptyPayload(new SettingsFake(), expectedUri, "GET");
var response = request.Execute();
Assert.AreEqual(2, response.NumberOfAttempts);
}
public void Execute_ExpectingEmptyPayload_ConsumesResponseStream()
{
var expectedUri = "test://queue.abc/whatever/";
var expectedRawRequest = new TestableWebRequest(new Uri(expectedUri));
var expectedRawResponse = new HttpResponseSettings(HttpStatusCode.OK, "Success", "Response content", false);
expectedRawRequest.EnqueueResponse(expectedRawResponse);
TestableWebRequestCreateFactory.GetFactory().AddRequest(expectedRawRequest);
var request = new RequestWithEmptyPayload(new SettingsFake(), expectedUri, "GET");
var response = request.Execute();
// expect the response stream to be closed now
long x;
Assert.Throws <ObjectDisposedException>(() => x = expectedRawResponse.ResponseStream.Position);
}
public void Execute_FailsUntilRetryCountExceeded_ThenGivesUp()
{
var expectedUri = "test://queue.abc/whatever/";
var expectedRawRequest = new TestableWebRequest(new Uri(expectedUri))
.EnqueueResponse(new TimeoutException("message 1"))
.EnqueueResponse(new TimeoutException("message 2"))
.EnqueueResponse(new TimeoutException("message 3"))
.EnqueueResponse(HttpStatusCode.OK, "Success", "Should give up before it gets this one", false);
TestableWebRequestCreateFactory.GetFactory().AddRequest(expectedRawRequest);
var request = new RequestWithEmptyPayload(new SettingsFake(), expectedUri, "GET");
request.RetryPolicy = new RetryPolicy <ExceptionRetryStrategy>(2, TimeSpan.FromMilliseconds(1));
request.Execute();
// expecting an exception
}
public void Execute_ReceiveTransientExceptionThenNonTransient_ThrowsExceptionWithProperRetryStack()
{
var expectedUri = "test://queue.abc/whatever/";
var expectedRawRequest = new TestableWebRequest(new Uri(expectedUri))
.EnqueueResponse(new WebException("Azure hung up after the initial request", new SocketException(1), WebExceptionStatus.ReceiveFailure, null))
.EnqueueResponse(HttpStatusCode.Conflict, "QueueAlreadyExists", queueAlreadyExistsExceptionText, true);
TestableWebRequestCreateFactory.GetFactory().AddRequest(expectedRawRequest);
var request = new RequestWithEmptyPayload(new SettingsFake(), expectedUri, "GET");
try
{
request.Execute();
}
catch (QueueAlreadyExistsAzureException exc)
{
Assert.AreEqual(2, exc.RetryCount);
Assert.AreEqual(exc.RetryCount, exc.ExceptionRetryStack.Count);
Assert.IsInstanceOf <QueueAlreadyExistsAzureException>(exc.ExceptionRetryStack.First());
Assert.IsInstanceOf <UnidentifiedAzureException>(exc.ExceptionRetryStack.Last());
Assert.IsInstanceOf <WebException>(exc.ExceptionRetryStack.Last().InnerException);
}
}
public void Execute_FailsUntilRetryCountExceeded_ThenGivesUp()
{
var expectedUri = "test://queue.abc/whatever/";
var expectedRawRequest = new TestableWebRequest(new Uri(expectedUri))
.EnqueueResponse(new TimeoutException("message 1"))
.EnqueueResponse(new TimeoutException("message 2"))
.EnqueueResponse(new TimeoutException("message 3"))
.EnqueueResponse(HttpStatusCode.OK, "Success", "Should give up before it gets this one", false);
TestableWebRequestCreateFactory.GetFactory().AddRequest(expectedRawRequest);
var request = new RequestWithEmptyPayload(new SettingsFake(), expectedUri, "GET");
request.RetryPolicy = new RetryPolicy<ExceptionRetryStrategy>(2, TimeSpan.FromMilliseconds(1));
var response = request.Execute();
// expecting an exception
}
public void Execute_ReceiveTransientExceptionThenNonTransient_ThrowsExceptionWithProperRetryStack()
{
var expectedUri = "test://queue.abc/whatever/";
var expectedRawRequest = new TestableWebRequest(new Uri(expectedUri))
.EnqueueResponse(new WebException("Azure hung up after the initial request", new SocketException(1), WebExceptionStatus.ReceiveFailure, null))
.EnqueueResponse(HttpStatusCode.Conflict, "QueueAlreadyExists", queueAlreadyExistsExceptionText, true);
TestableWebRequestCreateFactory.GetFactory().AddRequest(expectedRawRequest);
var request = new RequestWithEmptyPayload(new SettingsFake(), expectedUri, "GET");
try
{
request.Execute();
}
catch (QueueAlreadyExistsAzureException exc)
{
Assert.AreEqual(2, exc.RetryCount);
Assert.AreEqual(exc.RetryCount, exc.ExceptionRetryStack.Count);
Assert.IsInstanceOf<QueueAlreadyExistsAzureException>(exc.ExceptionRetryStack.First());
Assert.IsInstanceOf<UnidentifiedAzureException>(exc.ExceptionRetryStack.Last());
Assert.IsInstanceOf<WebException>(exc.ExceptionRetryStack.Last().InnerException);
}
}
public void Execute_FailsUntilRetryCountExceeded_ThrowsExceptionWithProperRetryStack()
{
var expectedUri = "test://queue.abc/whatever/";
const string message = "message";
var expectedRawRequest = new TestableWebRequest(new Uri(expectedUri))
.EnqueueResponse(new TimeoutException(message + "1"))
.EnqueueResponse(new TimeoutException(message + "2"))
.EnqueueResponse(new TimeoutException(message + "3"));
TestableWebRequestCreateFactory.GetFactory().AddRequest(expectedRawRequest);
var request = new RequestWithEmptyPayload(new SettingsFake(), expectedUri, "GET");
request.RetryPolicy = new RetryPolicy<ExceptionRetryStrategy>(2, TimeSpan.FromMilliseconds(1));
try
{
// Act
request.Execute();
//Assert, starting with catching the specific exception type
}
catch (RetriedException exc)
{
Assert.AreEqual(3, exc.Count);
Assert.AreEqual(exc.Count, exc.ExceptionRetryStack.Count);
var currentExceptionIndex = 3;
foreach (var exception in exc.ExceptionRetryStack)
{
Assert.IsInstanceOf<GeneralExceptionDuringAzureOperationException>(exception);
Assert.IsInstanceOf<TimeoutException>(exception.InnerException);
Assert.AreEqual(exception.InnerException.Message, message + currentExceptionIndex);
currentExceptionIndex--; // stack is LIFO
}
}
}
public void Execute_ConnectFailureException_AttemptsToRetry()
{
var expectedUri = "test://queue.abc/whatever/";
var expectedRawRequest = new TestableWebRequest(new Uri(expectedUri))
.EnqueueResponse(new WebException("Could not connect because Azure crashed", new SocketException(1), WebExceptionStatus.ConnectFailure, null))
.EnqueueResponse(HttpStatusCode.OK, "Success", "Even More Success", false);
TestableWebRequestCreateFactory.GetFactory().AddRequest(expectedRawRequest);
var request = new RequestWithEmptyPayload(new SettingsFake(), expectedUri, "GET");
var response = request.Execute();
Assert.AreEqual(2, response.NumberOfAttempts);
}
public void Execute_ReceiveTransientExceptionThenNonTransient_ThrowsNonTransient()
{
var expectedUri = "test://queue.abc/whatever/";
var expectedRawRequest = new TestableWebRequest(new Uri(expectedUri))
.EnqueueResponse(new WebException("Azure hung up after the initial request", new SocketException(1), WebExceptionStatus.ReceiveFailure, null))
.EnqueueResponse(HttpStatusCode.Conflict, "QueueAlreadyExists", queueAlreadyExistsExceptionText, true);
TestableWebRequestCreateFactory.GetFactory().AddRequest(expectedRawRequest);
var request = new RequestWithEmptyPayload(new SettingsFake(), expectedUri, "GET");
request.Execute();
// expected non transient exception
}
