/// <summary>
/// Compares the headers in the current HttpResponse instance with the headers in the actual response
/// and returns a set of validation errors for any important differences.
/// </summary>
/// <param name="actual">The actual response that is compared with the expected (current object) response.</param>
/// <param name="errors">An array of errors that were generated by the validation</param>
/// <returns>A boolean that is True if the response is valid (no significant errors or warnings detected) or False if errors exist.</returns>
public bool ValidateResponseHeaders(HttpResponse actual, out ValidationError[] errors, IEnumerable <int> allowedStatusCodes = null)
{
if (actual == null)
{
throw new ArgumentNullException("actual");
}
List <ValidationError> errorList = new List <ValidationError>();
// Check the HTTP status code
bool usedAllowedStatusCode = false;
if (this.StatusCode != actual.StatusCode)
{
if (null != allowedStatusCodes && allowedStatusCodes.Contains(actual.StatusCode))
{
errorList.Add(new ValidationWarning(ValidationErrorCode.HttpStatusCodeDifferent, null, "Response uses an allowed status code that was different than the documentation indcaites: Expected status code: {0}, received: {1}.", this.StatusCode, actual.StatusCode));
usedAllowedStatusCode = true;
}
else
{
errorList.Add(new ValidationError(ValidationErrorCode.HttpStatusCodeDifferent, null, "Expected status code: {0}, received: {1}.", this.StatusCode, actual.StatusCode));
}
}
// Check the HTTP status message
if (this.StatusMessage != actual.StatusMessage)
{
errorList.Add(ValidationError.CreateError(usedAllowedStatusCode, ValidationErrorCode.HttpStatusMessageDifferent, null, "Expected status message {0}, received: {1}.", this.StatusMessage, actual.StatusMessage));
}
// Check to see that expected headers were found in the response (headers listed in the
// expected response must be present in the actual response and contain the same value).
List <string> otherResponseHeaderKeys = new List <string>();
if (actual.Headers != null)
{
otherResponseHeaderKeys.AddRange(actual.Headers.AllKeys);
}
var comparer = new HeaderNameComparer();
foreach (var expectedHeader in this.Headers.AllKeys)
{
if (!otherResponseHeaderKeys.Contains(expectedHeader, comparer))
{
errorList.Add(new ValidationError(ValidationErrorCode.HttpRequiredHeaderMissing, null, "Response is missing header expected header: {0}.", expectedHeader));
}
else if (this.headersForPartialMatch.Contains(expectedHeader.ToLower()))
{
var expectedValue = this.Headers[expectedHeader];
var actualValue = actual.Headers[expectedHeader];
if (!actualValue.ToLower().StartsWith(expectedValue))
{
errorList.Add(new ValidationError(ValidationErrorCode.HttpHeaderValueDifferent, null, "Header '{0}' has unexpected value '{1}' (expected {2})", expectedHeader, actualValue, expectedValue));
}
}
}
errors = errorList.ToArray();
return(!errors.Any(x => x.IsError || x.IsWarning));
}
