content: implement unittests backend for Ozone GBM

content/test/content_test_suite.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 "content/test/content_test_suite.h"
 
 #include "base/base_paths.h"
 #include "base/base_switches.h"
 #include "base/logging.h"
+#include "base/message_loop/message_loop.h"
 #include "content/public/common/content_client.h"
 #include "content/public/common/content_paths.h"
 #include "content/public/test/test_content_client_initializer.h"
 #include "gpu/config/gpu_util.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 #if defined(OS_WIN)
 #include "ui/gfx/win/dpi.h"
 #endif
 
@@ skipping 47 matching lines @@
 }  // namespace
 
 ContentTestSuite::ContentTestSuite(int argc, char** argv)
     : ContentTestSuiteBase(argc, argv) {
 }
 
 ContentTestSuite::~ContentTestSuite() {
 }
 
 void ContentTestSuite::Initialize() {
+  // Especially Ozone needs MessageLoopForUI.
+  scoped_ptr<base::MessageLoop> message_loop(new base::MessageLoopForUI);
+
 #if defined(OS_MACOSX)
   base::mac::ScopedNSAutoreleasePool autorelease_pool;
 #if !defined(OS_IOS)
   mock_cr_app::RegisterMockCrApp();
 #endif
 #endif
 
 #if defined(OS_WIN)
   gfx::InitDeviceScaleFactor(1.0f);
 #endif
+#if defined(USE_OZONE)
+  ozone_ = ui::OzoneInitializerForTest::Create();

[spang, 2015/12/14 17:51:37]

Can you just call ui::OzonePlatform::InitializeForUI here?

I do not think we want a OzoneInitializerForTest. What this is initializing is
the UI.

[dshwang, 2015/12/15 03:44:00]

What OzoneInitializerForTest is doing is to initialize both UI and GPU and wait
for all communications.
Especially unittests must wait for UI opening drm card0 and GPU receiving the
drm fd.

We can replace it with
OzonePlatform::InitializeForUI();
OzonePlatform::InitializeForGPU();
gpu_helper_.reset(new OzoneGpuTestHelper);
if (!gpu_helper_->Initialize(base::ThreadTaskRunnerHandle::Get(),
                             base::ThreadTaskRunnerHandle::Get())) {
  return false;
}
{
  base::MessageLoop::ScopedNestableTaskAllower allow(
      base::MessageLoop::current());
  base::RunLoop().RunUntilIdle();
}

OzoneInitializerForTest abstract these code.

+  DCHECK(ozone_);
+#endif
 
   ContentTestSuiteBase::Initialize();
   {
     ContentClient client;
     ContentTestSuiteBase::RegisterContentSchemes(&client);
   }
   RegisterPathProvider();
 #if !defined(OS_IOS)
   media::InitializeMediaLibrary();
   // When running in a child process for Mac sandbox tests, the sandbox exists
@@ skipping 20 matching lines @@
     client_native_pixmap_factory_ = ui::ClientNativePixmapFactory::Create();
     ui::ClientNativePixmapFactory::SetInstance(
         client_native_pixmap_factory_.get());
     ui::ClientNativePixmapFactory::GetInstance()->Initialize(
         ui::OzonePlatform::GetInstance()->OpenClientNativePixmapDevice());
   }
 #endif
 }
 
 }  // namespace content