Initial implementation of Cronet Async API.

net/test/url_request/url_request_mock_http_job.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "net/test/url_request/url_request_mock_http_job.h"
 
 #include "base/files/file_util.h"
 #include "base/message_loop/message_loop.h"
+#include "base/strings/string_number_conversions.h"
 #include "base/strings/string_util.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/task_runner_util.h"
 #include "base/threading/sequenced_worker_pool.h"
 #include "base/threading/thread_restrictions.h"
 #include "net/base/filename_util.h"
+#include "net/base/net_errors.h"
+#include "net/base/url_util.h"
 #include "net/http/http_response_headers.h"
 #include "net/url_request/url_request_filter.h"
 #include "net/url_request/url_request_interceptor.h"
 
 const char kMockHostname[] = "mock.http";
 const base::FilePath::CharType kMockHeaderFileSuffix[] =
     FILE_PATH_LITERAL(".mock-http-headers");
 
+const char kMockErrorStepRedirect[] = "redirect";
+const char kMockErrorStepHeaders[] = "headers";
+const char kMockErrorStepData[] = "data";
+
 namespace net {
 
 namespace {
 
 class MockJobInterceptor : public net::URLRequestInterceptor {
  public:
   // When |map_all_requests_to_base_path| is true, all request should return the
   // contents of the file at |base_path|. When |map_all_requests_to_base_path|
   // is false, |base_path| is the file path leading to the root of the directory
   // to use as the root of the HTTP server.
@@ skipping 116 matching lines @@
 }
 
 // Public virtual version.
 void URLRequestMockHTTPJob::GetResponseInfo(net::HttpResponseInfo* info) {
   // Forward to private const version.
   GetResponseInfoConst(info);
 }
 
 bool URLRequestMockHTTPJob::IsRedirectResponse(GURL* location,
                                                int* http_status_code) {
+  if (ReportMockErrorFromQuery(kMockErrorStepRedirect))
+    return false;

[mmenke, 2014/10/16 16:39:34]

Hrm...I don't think this makes any sense.  For errors/hangs "on" redirects,
should redirect to another URL, and have that one hang/fail on start.

[mef, 2014/10/16 21:36:50]

Done.

   // Override the net::URLRequestFileJob implementation to invoke the default
   // one based on HttpResponseInfo.
   return net::URLRequestJob::IsRedirectResponse(location, http_status_code);
 }
 
 // Public virtual version.
 void URLRequestMockHTTPJob::Start() {
   base::PostTaskAndReplyWithResult(
       task_runner_.get(),
       FROM_HERE,
       base::Bind(&DoFileIO, file_path_),
       base::Bind(&URLRequestMockHTTPJob::GetRawHeaders,
                  weak_ptr_factory_.GetWeakPtr()));
 }
 
+// Public virtual version.
+bool URLRequestMockHTTPJob::ReadRawData(IOBuffer* buf,
+                                        int buf_size,
+                                        int* bytes_read) {
+  if (ReportMockErrorFromQuery(kMockErrorStepData))
+    return false;
+  return URLRequestFileJob::ReadRawData(buf, buf_size, bytes_read);
+}
+
 void URLRequestMockHTTPJob::GetRawHeaders(std::string raw_headers) {

[mmenke, 2014/10/16 16:39:34]

While you're here, think this should probably be renamed - maybe just
SetHeadersAndStart?

And also make the argument a "const std::string&"

[mef, 2014/10/16 21:36:50]

Done.

   // Handle CRLF line-endings.
   ReplaceSubstringsAfterOffset(&raw_headers, 0, "\r\n", "\n");
   // ParseRawHeaders expects \0 to end each header line.
   ReplaceSubstringsAfterOffset(&raw_headers, 0, "\n", std::string("\0", 1));
   raw_headers_ = raw_headers;
+  if (ReportMockErrorFromQuery(kMockErrorStepHeaders))
+    return;

[mmenke, 2014/10/16 16:39:34]

Hrm...wonder if we should set the headers or not in this case...  I'd say not,
unless we discover we need them later (Some errors do come with headers, I
suppose).

[mef, 2014/10/16 21:36:50]

Done.

   URLRequestFileJob::Start();
 }
 
+bool URLRequestMockHTTPJob::ReportMockErrorFromQuery(const std::string& step) {
+  std::string value;
+  if (!GetValueForKeyInQuery(request_->url(), step, &value))
+    return false;
+
+  int net_error;
+  if (!base::StringToInt(value, &net_error))
+    return false;
+
+  if (net_error == net::ERR_IO_PENDING) {
+    DLOG(ERROR) << "Report Mock ERR_IO_PENDING for step " << step;
+    SetStatus(net::URLRequestStatus(net::URLRequestStatus::IO_PENDING, 0));
+  } else {
+    DLOG(ERROR) << "Report Mock Error " << net_error << " for step " << step;
+    NotifyDone(net::URLRequestStatus(net::URLRequestStatus::FAILED, net_error));
+  }
+  return true;
+}
+
 // Private const version.
 void URLRequestMockHTTPJob::GetResponseInfoConst(
     net::HttpResponseInfo* info) const {
   info->headers = new net::HttpResponseHeaders(raw_headers_);
 }
 
 bool URLRequestMockHTTPJob::GetMimeType(std::string* mime_type) const {
   net::HttpResponseInfo info;
   GetResponseInfoConst(&info);
   return info.headers.get() && info.headers->GetMimeType(mime_type);
 }
 
 int URLRequestMockHTTPJob::GetResponseCode() const {
   net::HttpResponseInfo info;
   GetResponseInfoConst(&info);
   // If we have headers, get the response code from them.
   if (info.headers.get())
     return info.headers->response_code();
   return net::URLRequestJob::GetResponseCode();
 }
 
 bool URLRequestMockHTTPJob::GetCharset(std::string* charset) {
   net::HttpResponseInfo info;
   GetResponseInfo(&info);
   return info.headers.get() && info.headers->GetCharset(charset);
 }
 
 }  // namespace net