[Blimp] Adds blimp engine browser test framework and LoadUrl test.

blimp/test/blimp_browser_test.cc

+// 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.
+
+#include "blimp/test/blimp_browser_test.h"
+
+#include "base/base_switches.h"
+#include "base/command_line.h"
+#include "base/files/file_path.h"
+#include "base/memory/ptr_util.h"
+#include "base/message_loop/message_loop.h"
+#include "base/run_loop.h"
+#include "blimp/client/app/blimp_client_switches.h"
+#include "blimp/client/session/assignment_source.h"
+#include "blimp/engine/app/switches.h"
+#include "cc/base/switches.h"
+#include "content/public/browser/browser_thread.h"
+#include "content/public/browser/render_process_host.h"
+#include "content/public/common/content_switches.h"
+#include "content/public/common/url_constants.h"
+#include "ui/gl/gl_switches.h"
+
+namespace blimp {
+
+BlimpBrowserTest::BlimpBrowserTest() {
+  base::FilePath test_data(FILE_PATH_LITERAL("blimp/engine/test/data"));
+  CreateTestServer(test_data);
+}
+
+BlimpBrowserTest::~BlimpBrowserTest() {}
+
+void BlimpBrowserTest::SetUp() {
+  base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
+  SetUpCommandLine(command_line);
+  BrowserTestBase::SetUp();
+}
+
+void BlimpBrowserTest::SetUpOnMainThread() {}
+
+void BlimpBrowserTest::TearDownOnMainThread() {
+  content::BrowserThread::GetMessageLoopProxyForThread(
+      content::BrowserThread::UI)
+      ->PostTask(FROM_HERE, base::MessageLoop::QuitWhenIdleClosure());
+}
+
+void BlimpBrowserTest::SetUpCommandLine(base::CommandLine* command_line) {
+  command_line->AppendSwitchASCII(::switches::kVModule, "blimp*=2");
+  command_line->AppendSwitchASCII(blimp::switches::kEnginePort, "25567");
+
+  // Engine switches
+  command_line->AppendSwitch(::switches::kDisableGpu);
+  command_line->AppendSwitch(::switches::kUseRemoteCompositing);

[nyquist, 2016/04/29 21:30:54]

Could you file a bug that we should move these to the engine startup instead of
having them both here and in the shell script that starts the engine?

[haibinlu, 2016/04/29 22:43:13]

pull engine command line config out of blimp/engine/app/blimp_main.cc and use it
here.

+  command_line->AppendSwitch(cc::switches::kDisableCachedPictureRaster);
+  command_line->AppendSwitchASCII(::switches::kUseGL, "osmesa");
+  command_line->AppendSwitch(
+      "disable-remote-fonts");  // switches::kDisableRemoteFonts is not visible.
+  command_line->AppendSwitchASCII(blimp::engine::kClientToken,
+                                  blimp::client::kDummyClientToken);
+
+  // Client switches
+  // Client's AssignmentSource uses engine IP&port from command line and
+  // defaults to TCP client.
+  command_line->AppendSwitchASCII(blimp::switches::kEngineIP, "127.0.0.1");
+  command_line->AppendSwitchASCII(blimp::switches::kEngineTransport, "tcp");
+}
+
+void BlimpBrowserTest::RunTestOnMainThreadLoop() {
+  DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
+
+  // Pump startup related events.
+  base::MessageLoop::current()->RunUntilIdle();
+
+  SetUpOnMainThread();
+  RunTestOnMainThread();
+  TearDownOnMainThread();
+
+  for (content::RenderProcessHost::iterator i(
+           content::RenderProcessHost::AllHostsIterator());
+       !i.IsAtEnd(); i.Advance()) {
+    i.GetCurrentValue()->FastShutdownIfPossible();
+  }
+}
+
+void BlimpBrowserTest::RunAsynchronousTest() {
+  base::MessageLoop::ScopedNestableTaskAllower nestable_allower(
+      base::MessageLoop::current());
+  EXPECT_FALSE(run_loop_);
+  run_loop_ = base::WrapUnique(new base::RunLoop());
+  run_loop_->Run();
+  run_loop_ = nullptr;
+}
+
+void BlimpBrowserTest::FinishAsynchronousTest() {
+  run_loop_->Quit();
+}
+
+}  // namespace blimp