Provides the ability to write a unit test that brings up a browser. As

a proof of concept I converted
FindInPageControllerTest.FindInPageFrames over to this.

See the description in InProcessBrowserTest for how it all works.

BUG=none
TEST=none

Review URL: http://codereview.chromium.org/19644

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@8934 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 179 insertions, 0 deletions

diff --git a/chrome/test/in_process_browser_test.cc b/chrome/test/in_process_browser_test.cc
new file mode 100644
index 0000000..581ddab
--- /dev/null
+++ b/chrome/test/in_process_browser_test.cc
@@ -0,0 +1,179 @@
+// Copyright (c) 2006-2008 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 "chrome/test/in_process_browser_test.h"
+
+#include "base/command_line.h"
+#include "base/file_util.h"
+#include "base/path_service.h"
+#include "chrome/browser/browser.h"
+#include "chrome/browser/browser_process.h"
+#include "chrome/browser/browser_shutdown.h"
+#include "chrome/browser/profile.h"
+#include "chrome/browser/profile_manager.h"
+#include "chrome/browser/views/frame/browser_view.h"
+#include "chrome/common/chrome_constants.h"
+#include "chrome/common/chrome_paths.h"
+#include "chrome/common/chrome_switches.h"
+#include "chrome/common/main_function_params.h"
+#include "chrome/test/testing_browser_process.h"
+#include "chrome/test/ui_test_utils.h"
+#include "sandbox/src/sandbox_factory.h"
+#include "sandbox/src/dep.h"
+
+extern int BrowserMain(const MainFunctionParams&);
+
+const wchar_t kUnitTestShowWindows[] = L"show-windows";
+
+namespace {
+
+bool DieFileDie(const std::wstring& file, bool recurse) {
+  if (!file_util::PathExists(file))
+    return true;
+
+  // Sometimes Delete fails, so try a few more times.
+  for (int i = 0; i < 10; ++i) {
+    if (file_util::Delete(file, recurse))
+      return true;
+    PlatformThread::Sleep(100);
+  }
+  return false;
+}
+
+}  // namespace
+
+InProcessBrowserTest::InProcessBrowserTest() : browser_(NULL) {
+}
+
+void InProcessBrowserTest::SetUp() {
+  // Cleanup the user data dir.
+  std::wstring user_data_dir;
+  PathService::Get(chrome::DIR_USER_DATA, &user_data_dir);
+  ASSERT_LT(10, static_cast<int>(user_data_dir.size())) <<
+      "The user data directory name passed into this test was too "
+      "short to delete safely.  Please check the user-data-dir "
+      "argument and try again.";
+  ASSERT_TRUE(DieFileDie(user_data_dir, true));
+
+  // The unit test suite creates a testingbrowser, but we want the real thing.
+  // Delete the current one. We'll install the testing one in TearDown.
+  delete g_browser_process;
+
+  // Don't delete the resources when BrowserMain returns. Many ui classes
+  // cache SkBitmaps in a static field so that if we delete the resource
+  // bundle we'll crash.
+  browser_shutdown::delete_resources_on_shutdown = false;
+
+  CommandLine* command_line = CommandLine::ForCurrentProcessMutable();
+
+  // Hide windows on show.
+  if (!command_line->HasSwitch(kUnitTestShowWindows))
+    BrowserView::SetShowState(SW_HIDE);
+
+  command_line->AppendSwitchWithValue(switches::kUserDataDir, user_data_dir);
+
+  // For some reason the sandbox wasn't happy running in test mode. These
+  // tests aren't intended to test the sandbox, so we turn it off.
+  command_line->AppendSwitch(switches::kNoSandbox);
+
+  // Explicitly set the path of the exe used for the renderer, otherwise it'll
+  // try to use unit_test.exe.
+  std::wstring renderer_path;
+  PathService::Get(base::FILE_EXE, &renderer_path);
+  file_util::TrimFilename(&renderer_path);
+  file_util::AppendToPath(&renderer_path,
+                          chrome::kBrowserProcessExecutableName);
+  command_line->AppendSwitchWithValue(switches::kRendererPath, renderer_path);
+
+  sandbox::SandboxInterfaceInfo sandbox_info = {0};
+  SandboxInitWrapper sandbox_wrapper;
+  MainFunctionParams params(*command_line, sandbox_wrapper);
+  params.ui_task =
+      NewRunnableMethod(this, &InProcessBrowserTest::RunTestOnMainThreadLoop);
+  BrowserMain(params);
+}
+
+void InProcessBrowserTest::TearDown() {
+  // Reinstall testing browser process.
+  delete g_browser_process;
+  g_browser_process = new TestingBrowserProcess();
+
+  browser_shutdown::delete_resources_on_shutdown = true;
+
+  BrowserView::SetShowState(-1);
+}
+
+void InProcessBrowserTest::Observe(NotificationType type,
+                                   const NotificationSource& source,
+                                   const NotificationDetails& details) {
+  if (type == NOTIFY_BROWSER_CLOSED) {
+    DCHECK(Source<Browser>(source).ptr() == browser_);
+    browser_ = NULL;
+  } else {
+    NOTREACHED();
+  }
+}
+
+HTTPTestServer* InProcessBrowserTest::StartHTTPServer() {
+  // The HTTPServer must run on the IO thread.
+  DCHECK(!http_server_.get());
+  http_server_ = HTTPTestServer::CreateServer(
+      L"chrome/test/data",
+      g_browser_process->io_thread()->message_loop());
+  return http_server_.get();
+}
+
+// Creates a browser with a single tab (about:blank), waits for the tab to
+// finish loading and shows the browser.
+Browser* InProcessBrowserTest::CreateBrowser(Profile* profile) {
+  Browser* browser = Browser::Create(profile);
+
+  browser->AddTabWithURL(
+      GURL("about:blank"), GURL(), PageTransition::START_PAGE, true, NULL);
+  
+  // Wait for the page to finish loading.
+  ui_test_utils::WaitForNavigation(
+      browser->GetSelectedTabContents()->controller());
+
+  browser->window()->Show();
+
+  return browser;
+}
+
+void InProcessBrowserTest::RunTestOnMainThreadLoop() {
+  // In the long term it would be great if we could use a TestingProfile
+  // here and only enable services you want tested, but that requires all
+  // consumers of Profile to handle NULL services.
+  FilePath user_data_dir;
+  PathService::Get(chrome::DIR_USER_DATA, &user_data_dir);
+  ProfileManager* profile_manager = g_browser_process->profile_manager();
+  Profile* profile = profile_manager->GetDefaultProfile(user_data_dir);
+  if (!profile) {
+    // We should only be able to get here if the profile already exists and
+    // has been created.
+    NOTREACHED();
+    MessageLoopForUI::current()->Quit();
+    return;
+  }
+
+  profile->InitExtensions();
+
+  browser_ = CreateBrowser(profile);
+
+  registrar_.Add(this, NOTIFY_BROWSER_CLOSED, Source<Browser>(browser_));
+
+  RunTestOnMainThread();
+
+  if (browser_)
+    browser_->CloseAllTabs();
+
+  // Remove all registered notifications, otherwise by the time the
+  // destructor is run the NotificationService is dead.
+  registrar_.RemoveAll();
+
+  // Stop the HTTP server.
+  http_server_ = NULL;
+
+  MessageLoopForUI::current()->Quit();
+}