Reland http://codereview.chromium.org/8477015

ppapi/tests/testing_instance.h

 // Copyright (c) 2011 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 PPAPI_TESTS_TESTING_INSTANCE_H_
 #define PPAPI_TESTS_TESTING_INSTANCE_H_
 
 #include <string>
 
 #include "ppapi/cpp/completion_callback.h"
@@ skipping 69 matching lines @@
   virtual void HandleMessage(const pp::Var& message_data);
 
   const std::string& protocol() {
     return protocol_;
   }
 
  private:
   void ExecuteTests(int32_t unused);
 
   // Creates a new TestCase for the give test name, or NULL if there is no such
-  // test. Ownership is passed to the caller.
-  TestCase* CaseForTestName(const char* name);
+  // test. Ownership is passed to the caller. The given string is split by '_'.
+  // The test case name is the first part.
+  TestCase* CaseForTestName(const std::string& name);
+  // Returns the filter (second part) of the given string. If there is no '_',
+  // returns the empty string, which means 'run all tests for this test case'.
+  // E.g.:
+  //  http://testserver/test_case.html?testcase=PostMessage
+  // Otherwise, the part of the testcase after '_' is returned, and the test
+  // whose name matches that string (if any) will be run:
+  //  http://testserver/test_case.html?testcase=PostMessage_SendingData
+  // Runs 'PostMessage_SendingData.
+  std::string FilterForTestName(const std::string& name);
 
   // Appends a list of available tests to the console in the document.
   void LogAvailableTests();
 
   // Appends the given error test to the console in the document.
   void LogError(const std::string& text);
 
   // Appends the given HTML string to the console in the document.
   void LogHTML(const std::string& html);
 
   void ReportProgress(const std::string& progress_value);
 
   // Sets the given cookie in the current document.
   void SetCookie(const std::string& name, const std::string& value);
 
   pp::CompletionCallbackFactory<TestingInstance> callback_factory_;
 
   // Owning pointer to the current test case. Valid after Init has been called.
   TestCase* current_case_;
 
+  // A filter to use when running tests. This is passed to 'RunTests', which
+  // runs only tests whose name contains test_filter_ as a substring.
+  std::string test_filter_;
+
   // The current step we're on starting at 0. This is incremented every time we
   // report progress via a cookie. See comment above the class.
   int progress_cookie_number_;
 
   // Set once the tests are run so we know not to re-run when the view is sized.
   bool executed_tests_;
 
   // Collects all errors to send the the browser. Empty indicates no error yet.
   std::string errors_;
 
   // True if running in Native Client.
   bool nacl_mode_;
 
   // String representing the protocol.  Used for detecting whether we're running
   // with http.
   std::string protocol_;
 };
 
 #endif  // PPAPI_TESTS_TESTING_INSTANCE_H_