Add more ResourceLoaderTests

content/browser/loader/test_resource_handler.h

 // Copyright 2016 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.
 
 #ifndef CONTENT_BROWSER_LOADER_TEST_RESOURCE_HANDLER_H_
 #define CONTENT_BROWSER_LOADER_TEST_RESOURCE_HANDLER_H_
 
 #include <memory>
 #include <string>
 
@@ skipping 128 matching lines @@
   // URL passed to OnResponseStarted, if it was called.
   const GURL& start_url() const { return start_url_; }
 
   ResourceResponse* resource_response() { return resource_response_.get(); };
 
   int total_bytes_downloaded() const { return total_bytes_downloaded_; }
 
   const std::string& body() const { return body_; }
   net::URLRequestStatus final_status() const { return final_status_; }
 
+  // Returns the current number of |this|'s methods on the callstack.
+  int call_depth() const { return call_depth_; }
+
   // Spins the message loop until the request is deferred.  Using this is
   // optional, but if used, must use it exclusively to wait for the request. If
   // the request was deferred and then resumed/canceled without calling this
   // method, behavior is undefined.
   void WaitUntilDeferred();
 
   void WaitUntilResponseComplete();
 
  private:
   // TODO(mmenke):  Remove these, in favor of final_status_ and body_.
@@ skipping 32 matching lines @@
   int on_response_completed_called_ = 0;
 
   GURL start_url_;
   scoped_refptr<ResourceResponse> resource_response_;
   int total_bytes_downloaded_ = 0;
   std::string body_;
   net::URLRequestStatus final_status_ =
       net::URLRequestStatus::FromError(net::ERR_UNEXPECTED);
   bool canceled_ = false;
 
+  // Tracks recursive calls, which aren't allowed.
+  int call_depth_ = 0;
+
   std::unique_ptr<base::RunLoop> deferred_run_loop_;
 
   base::RunLoop response_complete_run_loop_;
 
   DISALLOW_COPY_AND_ASSIGN(TestResourceHandler);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_LOADER_TEST_RESOURCE_HANDLER_H_