Switch child threads so that current() only works on the correct thread and t...

chrome/renderer/render_thread_unittest.cc

 // Copyright (c) 2008 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 "base/waitable_event.h"
 #include "chrome/common/ipc_sync_channel.h"
 #include "chrome/common/render_messages.h"
 #include "chrome/renderer/mock_render_process.h"
 #include "chrome/renderer/render_thread.h"
 #include "testing/gtest/include/gtest/gtest.h"
@@ skipping 22 matching lines @@
     delete channel_;
   }
 
  protected:
   MessageLoopForIO message_loop_;
   scoped_ptr<MockProcess> mock_process_;
   IPC::Channel *channel_;
 };
 
 TEST_F(RenderThreadTest, TestGlobal) {
-  ASSERT_TRUE(RenderThread::current());
+  // Can't reach the RenderThread object on other threads, since it's not
+  // thread-safe!
+  ASSERT_FALSE(RenderThread::current());
 }
 
 TEST_F(RenderThreadTest, TestVisitedMsg) {
 #if defined(OS_WIN)
   IPC::Message* msg = new ViewMsg_VisitedLink_NewTable(NULL);
 #elif defined(OS_POSIX)
   IPC::Message* msg = new ViewMsg_VisitedLink_NewTable(
       base::SharedMemoryHandle(0, false));
 #endif
   ASSERT_TRUE(msg);
   // Message goes nowhere, but this confirms Init() has happened.
   // Unusually (?), RenderThread() Start()s itself in it's constructor.
   mock_process_->child_thread()->Send(msg);
 
   // No need to delete msg; per Message::Send() documentation, "The
   // implementor takes ownership of the given Message regardless of
   // whether or not this method succeeds."
 }
 
 }  // namespace