/// <summary>
/// Performs validation of a method (request/response) with a given service
/// target and zero or more test scenarios
/// </summary>
/// <param name="method"></param>
/// <param name="account"></param>
/// <param name="credentials"></param>
/// <returns></returns>
public static async Task<ValidationResults> ValidateServiceResponseAsync(
this MethodDefinition method,
ScenarioDefinition[] scenarios,
IServiceAccount account,
ValidationOptions options = null)
{
if (null == method)
throw new ArgumentNullException("method");
if (null == account)
throw new ArgumentNullException("account");
ValidationResults results = new ValidationResults();
if (scenarios.Length == 0)
{
// If no descenarios are defined for this method, add a new default scenario
scenarios = new ScenarioDefinition[] {
new ScenarioDefinition {
Description = "verbatim",
Enabled = true,
MethodName = method.Identifier,
RequiredScopes = method.RequiredScopes
}
};
// results.AddResult("init", new ValidationMessage(null, "No scenarios were defined for method {0}. Will request verbatim from docs.", method.Identifier), ValidationOutcome.None);
}
if (scenarios.Any() && !scenarios.Any(x => x.Enabled))
{
results.AddResult("init",
new ValidationWarning(ValidationErrorCode.AllScenariosDisabled, null, "All scenarios for method {0} were disabled.", method.Identifier),
ValidationOutcome.Skipped);
return results;
}
foreach (var scenario in scenarios.Where(x => x.Enabled))
{
try
{
await ValidateMethodWithScenarioAsync(method, scenario, account, results, options);
}
catch (Exception ex)
{
results.AddResult(
"validation",
new ValidationError(
ValidationErrorCode.ExceptionWhileValidatingMethod,
method.SourceFile.DisplayName,
ex.Message));
}
}
return results;
}
private static async Task ValidateMethodWithScenarioAsync(
MethodDefinition method,
ScenarioDefinition scenario,
IServiceAccount account,
AuthenicationCredentials credentials,
ValidationResults results)
{
if (null == method)
throw new ArgumentNullException("method");
if (null == scenario)
throw new ArgumentNullException("scenario");
if (null == account)
throw new ArgumentNullException("account");
if (null == credentials)
throw new ArgumentNullException("credentials");
if (null == results)
throw new ArgumentNullException("results");
var actionName = scenario.Description;
// Generate the tested request by "previewing" the request and executing
// all test-setup procedures
long startTicks = DateTimeOffset.UtcNow.Ticks;
var requestPreviewResult = await method.GenerateMethodRequestAsync(scenario, account.BaseUrl, credentials, method.SourceFile.Parent);
TimeSpan generateMethodDuration = new TimeSpan(DateTimeOffset.UtcNow.Ticks - startTicks);
// Check to see if an error occured building the request, and abort if so.
var generatorResults = results[actionName + " [test-setup requests]"];
generatorResults.AddResults(requestPreviewResult.Messages, requestPreviewResult.IsWarningOrError ? ValidationOutcome.Error : ValidationOutcome.Passed);
generatorResults.Duration = generateMethodDuration;
if (requestPreviewResult.IsWarningOrError)
{
return;
}
// We've done all the test-setup work, now we have the real request to make to the service
HttpRequest requestPreview = requestPreviewResult.Value;
results.AddResult(
actionName,
new ValidationMessage(null, "Generated Method HTTP Request:\r\n{0}", requestPreview.FullHttpText()));
HttpParser parser = new HttpParser();
HttpResponse expectedResponse = null;
if (!string.IsNullOrEmpty(method.ExpectedResponse))
{
expectedResponse = parser.ParseHttpResponse(method.ExpectedResponse);
}
// Execute the actual tested method (the result of the method preview call, which made the test-setup requests)
startTicks = DateTimeOffset.UtcNow.Ticks;
var actualResponse = await requestPreview.GetResponseAsync(account.BaseUrl);
TimeSpan actualMethodDuration = new TimeSpan(DateTimeOffset.UtcNow.Ticks - startTicks);
var requestResults = results[actionName];
if (actualResponse.RetryCount > 0)
{
requestResults.AddResults(
new ValidationError[]
{ new ValidationWarning(ValidationErrorCode.RequestWasRetried, null, "HTTP request was retried {0} times.", actualResponse.RetryCount) });
}
requestResults.AddResults(
new ValidationError[]
{ new ValidationMessage(null, "HTTP Response:\r\n{0}", actualResponse.FullText(false)) });
requestResults.Duration = actualMethodDuration;
// Perform validation on the method's actual response
ValidationError[] errors;
method.ValidateResponse(actualResponse, expectedResponse, scenario, out errors);
requestResults.AddResults(errors);
// TODO: If the method is defined as a long running operation, we need to go poll the status
// URL to make sure that the operation finished and the response type is valid.
if (errors.WereErrors())
results.SetOutcome(actionName, ValidationOutcome.Error);
else if (errors.WereWarnings())
results.SetOutcome(actionName, ValidationOutcome.Warning);
else
results.SetOutcome(actionName, ValidationOutcome.Passed);
}
/// <summary>
/// Make a call to the HttpRequest and populate the Value property of
/// every PlaceholderValue in Values based on the result.
/// </summary>
/// <param name="storedValues"></param>
/// <param name="documents"></param>
/// <param name="scenario"></param>
/// <param name="account"></param>
/// <param name="parentOutputValues"></param>
/// <returns></returns>
public async Task<ValidationResult<bool>> MakeSetupRequestAsync(Dictionary<string, string> storedValues, DocSet documents, ScenarioDefinition scenario, IServiceAccount account, Dictionary<string, string> parentOutputValues = null)
{
// Copy the output values from parentOutputValues into our own
if (null != parentOutputValues)
{
foreach (var key in parentOutputValues.Keys)
{
this.OutputValues.Add(key, parentOutputValues[key]);
}
}
var errors = new List<ValidationError>();
if (!string.IsNullOrEmpty(this.CannedRequestName))
{
// We need to make a canned request setup request instead. Look up the canned request and then execute it, returning the results here.
var cannedRequest =
(from cr in documents.CannedRequests where cr.Name == this.CannedRequestName select cr)
.FirstOrDefault();
if (null == cannedRequest)
{
errors.Add(new ValidationError(ValidationErrorCode.InvalidRequestFormat, null, "Couldn't locate the canned-request named: {0}", this.CannedRequestName));
return new ValidationResult<bool>(false, errors);
}
// Need to make a copy of the canned request here so that our state doesn't continue to pile up
var cannedRequestInstance = cannedRequest.CopyInstance();
return await cannedRequestInstance.MakeSetupRequestAsync(storedValues, documents, scenario, account, this.OutputValues);
}
// Get the HttpRequest, either from MethodName or by parsing HttpRequest
HttpRequest request;
try
{
request = this.GetHttpRequest(documents);
}
catch (Exception ex)
{
errors.Add(new ValidationError(ValidationErrorCode.InvalidRequestFormat, null, "An error occured creating the http request: {0}", ex.Message));
return new ValidationResult<bool>(false, errors);
}
MethodDefinition.AddTestHeaderToRequest(scenario, request);
MethodDefinition.AddAdditionalHeadersToRequest(account, request);
// If this is a canned request, we need to merge the parameters / placeholders here
var placeholderValues = this.RequestParameters.ToPlaceholderValuesArray(storedValues);
// Update the request with the parameters in request-parameters
try
{
request.RewriteRequestWithParameters(placeholderValues);
}
catch (Exception ex)
{
errors.Add(new ValidationError(ValidationErrorCode.ParameterParserError, SourceName, "Error rewriting the request with parameters from the scenario: {0}", ex.Message));
return new ValidationResult<bool>(false, errors);
}
MethodDefinition.AddAccessTokenToRequest(account.CreateCredentials(), request);
errors.Add(new ValidationMessage(null, "Test-setup request:\n{0}", request.FullHttpText()));
try
{
var response = await request.GetResponseAsync(account.BaseUrl);
if (response.RetryCount > 0)
{
errors.Add(new ValidationWarning(ValidationErrorCode.RequestWasRetried, null, "HTTP request was retried {0} times.", response.RetryCount));
}
errors.Add(new ValidationMessage(null, "HTTP Response:\n{0}\n\n", response.FullText()));
// Check to see if this request is "successful" or not
if ( (this.AllowedStatusCodes == null && response.WasSuccessful) ||
(this.AllowedStatusCodes != null && this.AllowedStatusCodes.Contains(response.StatusCode)))
{
string expectedContentType = (null != this.OutputValues) ? ExpectedResponseContentType(this.OutputValues.Values) : null;
// Check for content type mismatch
if (string.IsNullOrEmpty(response.ContentType) && expectedContentType != null)
{
return new ValidationResult<bool>(false, new ValidationError(ValidationErrorCode.UnsupportedContentType, SourceName, "No Content-Type found for a non-204 response"));
}
// Load requested values into stored values
if (null != this.OutputValues)
{
foreach (var outputKey in this.OutputValues.Keys)
{
var source = this.OutputValues[outputKey];
storedValues[outputKey] = response.ValueForKeyedIdentifier(source);
}
}
return new ValidationResult<bool>(!errors.Any(x => x.IsError), errors);
}
else
{
if ((this.AllowedStatusCodes != null && !this.AllowedStatusCodes.Contains(response.StatusCode)) || !response.WasSuccessful)
{
string expectedCodes = "200-299";
if (this.AllowedStatusCodes != null)
expectedCodes = this.AllowedStatusCodes.ComponentsJoinedByString(",");
errors.Add(new ValidationError(ValidationErrorCode.HttpStatusCodeDifferent, SourceName, "Http response status code {0} didn't match expected values: {1}", response.StatusCode, expectedCodes));
}
else
{
errors.Add(new ValidationError(ValidationErrorCode.HttpStatusCodeDifferent, SourceName, "Http response content type was invalid: {0}", response.ContentType));
}
return new ValidationResult<bool>(false, errors);
}
}
catch (Exception ex)
{
errors.Add(new ValidationError(ValidationErrorCode.Unknown, SourceName, "Exception while making request: {0}", ex.Message));
return new ValidationResult<bool>(false, errors);
}
}
/// <summary>
/// Validates that a particular HttpResponse matches the method definition and optionally the expected response.
/// </summary>
/// <param name="method">Method definition that was used to generate a request.</param>
/// <param name="actualResponse">Actual response from the service (this is what we validate).</param>
/// <param name="expectedResponse">Prototype response (expected) that shows what a valid response should look like.</param>
/// <param name="scenario">A test scenario used to generate the response, which may include additional parameters to verify.</param>
/// <param name="errors">A collection of errors, warnings, and verbose messages generated by this process.</param>
public void ValidateResponse(HttpResponse actualResponse, HttpResponse expectedResponse, ScenarioDefinition scenario, out ValidationError[] errors, ValidationOptions options = null)
{
if (null == actualResponse) throw new ArgumentNullException("actualResponse");
List<ValidationError> detectedErrors = new List<ValidationError>();
// Verify the request is valid (headers, etc)
this.VerifyHttpRequest(detectedErrors);
// Verify that the expected response headers match the actual response headers
ValidationError[] httpErrors;
if (null != expectedResponse && !expectedResponse.ValidateResponseHeaders(actualResponse, out httpErrors, (null != scenario) ? scenario.AllowedStatusCodes : null))
{
detectedErrors.AddRange(httpErrors);
}
// Verify the actual response body is correct according to the schema defined for the response
ValidationError[] bodyErrors;
this.VerifyResponseBody(actualResponse, expectedResponse, out bodyErrors, options);
detectedErrors.AddRange(bodyErrors);
// Verify any expectations in the scenario are met
if (null != scenario)
{
scenario.ValidateExpectations(actualResponse, detectedErrors);
}
errors = detectedErrors.ToArray();
}
/// <summary>
/// Add information about the test that generated this call to the request headers.
/// </summary>
/// <param name="scenario"></param>
/// <param name="request"></param>
internal static void AddTestHeaderToRequest(ScenarioDefinition scenario, HttpRequest request)
{
var headerValue = string.Format(
"method-name: {0}; scenario-name: {1}",
scenario.MethodName,
scenario.Description);
request.Headers.Add("ApiDocsTestInfo", headerValue);
}
/// <summary>
/// Take a scenario definition and convert the prototype request into a fully formed request. This includes appending
/// the base URL to the request URL, executing any test-setup requests, and replacing the placeholders in the prototype
/// request with proper values.
/// </summary>
/// <param name="scenario"></param>
/// <param name="documents"></param>
/// <param name="account"></param>
/// <returns></returns>
public async Task<ValidationResult<HttpRequest>> GenerateMethodRequestAsync(ScenarioDefinition scenario, DocSet documents, IServiceAccount account)
{
var parser = new HttpParser();
var request = parser.ParseHttpRequest(this.Request);
AddAccessTokenToRequest(account.CreateCredentials(), request);
AddTestHeaderToRequest(scenario, request);
AddAdditionalHeadersToRequest(account, request);
List<ValidationError> errors = new List<ValidationError>();
if (null != scenario)
{
var storedValuesForScenario = new Dictionary<string, string>();
if (null != scenario.TestSetupRequests)
{
foreach (var setupRequest in scenario.TestSetupRequests)
{
var result = await setupRequest.MakeSetupRequestAsync(storedValuesForScenario, documents, scenario, account);
errors.AddRange(result.Messages);
if (result.IsWarningOrError)
{
// If we can an error or warning back from a setup method, we fail the whole request.
return new ValidationResult<HttpRequest>(null, errors);
}
}
}
try
{
var placeholderValues = scenario.RequestParameters.ToPlaceholderValuesArray(storedValuesForScenario);
request.RewriteRequestWithParameters(placeholderValues);
}
catch (Exception ex)
{
// Error when applying parameters to the request
errors.Add(
new ValidationError(
ValidationErrorCode.RewriteRequestFailure,
"GenerateMethodRequestAsync",
ex.Message));
return new ValidationResult<HttpRequest>(null, errors);
}
if (scenario.StatusCodesToRetry != null)
{
request.RetryOnStatusCode =
(from status in scenario.StatusCodesToRetry select (System.Net.HttpStatusCode)status).ToList();
}
}
if (string.IsNullOrEmpty(request.Accept))
{
if (!string.IsNullOrEmpty(ValidationConfig.ODataMetadataLevel))
{
request.Accept = MimeTypeJson + "; " + ValidationConfig.ODataMetadataLevel;
}
else
{
request.Accept = MimeTypeJson;
}
}
return new ValidationResult<HttpRequest>(request, errors);
}
/// <summary>
/// Make a call to the HttpRequest and populate the Value property of
/// every PlaceholderValue in Values based on the result.
/// </summary>
/// <param name="baseUrl"></param>
/// <param name="credentials"></param>
/// <param name="storedValues"></param>
/// <param name="documents"></param>
/// <returns></returns>
public async Task <ValidationResult <bool> > MakeSetupRequestAsync(string baseUrl, AuthenicationCredentials credentials, Dictionary <string, string> storedValues, DocSet documents, ScenarioDefinition scenario)
{
var errors = new List <ValidationError>();
if (!string.IsNullOrEmpty(this.CannedRequestName))
{
// We need to make a canned request setup request instead. Look up the canned request and then execute it, returning the results here.
var cannedRequest =
(from cr in documents.CannedRequests where cr.Name == this.CannedRequestName select cr)
.FirstOrDefault();
if (null == cannedRequest)
{
errors.Add(new ValidationError(ValidationErrorCode.InvalidRequestFormat, null, "Couldn't locate the canned-request named: {0}", this.CannedRequestName));
return(new ValidationResult <bool>(false, errors));
}
return(await cannedRequest.MakeSetupRequestAsync(baseUrl, credentials, storedValues, documents, scenario));
}
// Get the HttpRequest, either from MethodName or by parsing HttpRequest
HttpRequest request;
try
{
request = this.GetHttpRequest(documents);
}
catch (Exception ex)
{
errors.Add(new ValidationError(ValidationErrorCode.InvalidRequestFormat, null, "An error occured creating the http request: {0}", ex.Message));
return(new ValidationResult <bool>(false, errors));
}
MethodDefinition.AddTestHeaderToRequest(scenario, request);
// If this is a canned request, we need to merge the parameters / placeholders here
var placeholderValues = this.RequestParameters.ToPlaceholderValuesArray(storedValues);
// Update the request with the parameters in request-parameters
try
{
request.RewriteRequestWithParameters(placeholderValues);
}
catch (Exception ex)
{
errors.Add(new ValidationError(ValidationErrorCode.ParameterParserError, SourceName, "Error rewriting the request with parameters from the scenario: {0}", ex.Message));
return(new ValidationResult <bool>(false, errors));
}
MethodDefinition.AddAccessTokenToRequest(credentials, request);
errors.Add(new ValidationMessage(null, "Test-setup request:\n{0}", request.FullHttpText()));
try
{
var response = await request.GetResponseAsync(baseUrl);
if (response.RetryCount > 0)
{
errors.Add(new ValidationWarning(ValidationErrorCode.RequestWasRetried, null, "HTTP request was retried {0} times.", response.RetryCount));
}
errors.Add(new ValidationMessage(null, "HTTP Response:\n{0}\n\n", response.FullText()));
// Check to see if this request is "successful" or not
if ((this.AllowedStatusCodes == null && response.WasSuccessful) ||
(this.AllowedStatusCodes != null && this.AllowedStatusCodes.Contains(response.StatusCode)))
{
string expectedContentType = (null != this.OutputValues) ? ExpectedResponseContentType(this.OutputValues.Values) : null;
// Check for content type mismatch
if (string.IsNullOrEmpty(response.ContentType) && expectedContentType != null)
{
return(new ValidationResult <bool>(false, new ValidationError(ValidationErrorCode.UnsupportedContentType, SourceName, "No Content-Type found for a non-204 response")));
}
// Load requested values into stored values
if (null != this.OutputValues)
{
foreach (var outputKey in this.OutputValues.Keys)
{
var source = this.OutputValues[outputKey];
storedValues[outputKey] = response.ValueForKeyedIdentifier(source);
}
}
return(new ValidationResult <bool>(!errors.Any(x => x.IsError), errors));
}
else
{
if ((this.AllowedStatusCodes != null && !this.AllowedStatusCodes.Contains(response.StatusCode)) || !response.WasSuccessful)
{
string expectedCodes = "200-299";
if (this.AllowedStatusCodes != null)
{
expectedCodes = this.AllowedStatusCodes.ComponentsJoinedByString(",");
}
errors.Add(new ValidationError(ValidationErrorCode.HttpStatusCodeDifferent, SourceName, "Http response status code {0} didn't match expected values: {1}", response.StatusCode, expectedCodes));
}
else
{
errors.Add(new ValidationError(ValidationErrorCode.HttpStatusCodeDifferent, SourceName, "Http response content type was invalid: {0}", response.ContentType));
}
return(new ValidationResult <bool>(false, errors));
}
}
catch (Exception ex)
{
errors.Add(new ValidationError(ValidationErrorCode.Unknown, SourceName, "Exception while making request: {0}", ex.Message));
return(new ValidationResult <bool>(false, errors));
}
}
