chrome/test/base/browser_with_test_window_test.h

// 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.

#ifndef CHROME_TEST_BASE_BROWSER_WITH_TEST_WINDOW_TEST_H_
#define CHROME_TEST_BASE_BROWSER_WITH_TEST_WINDOW_TEST_H_

#include <memory>

#include "base/compiler_specific.h"
#include "base/macros.h"
#include "build/build_config.h"
#include "chrome/browser/ui/browser.h"
#include "chrome/test/base/test_browser_window.h"
#include "chrome/test/base/testing_profile.h"
#include "content/public/test/browser_task_environment.h"
#include "content/public/test/test_renderer_host.h"
#include "services/network/test/test_url_loader_factory.h"
#include "testing/gtest/include/gtest/gtest.h"

#if defined(TOOLKIT_VIEWS)
#include "chrome/test/views/chrome_test_views_delegate.h"

#if defined(OS_CHROMEOS)
#include "ash/test/ash_test_helper.h"
#include "ash/test/ash_test_views_delegate.h"
#include "chrome/browser/chromeos/login/users/scoped_test_user_manager.h"
#include "chrome/browser/chromeos/settings/scoped_cros_settings_test_helper.h"
#include "chromeos/tpm/stub_install_attributes.h"
#else
#include "ui/views/test/scoped_views_test_helper.h"
#endif
#endif

#if defined(OS_WIN)
#include "ui/base/win/scoped_ole_initializer.h"
#endif

class GURL;

namespace content {
class NavigationController;
}

class TestingProfileManager;

// Base class for browser based unit tests. BrowserWithTestWindowTest creates a
// Browser with a TestingProfile and TestBrowserWindow. To add a tab use
// AddTab. For example, the following adds a tab and navigates to
// two URLs that target the TestWebContents:
//
//   // Add a new tab and navigate it. This will be at index 0.
//   AddTab(browser(), GURL("http://foo/1"));
//   NavigationController* controller =
//       &browser()->tab_strip_model()->GetWebContentsAt(0)->GetController();
//
//   // Navigate somewhere else.
//   GURL url2("http://foo/2");
//   NavigateAndCommit(controller, url2);
//
//   // This is equivalent to the above, and lets you test pending navigations.
//   browser()->OpenURL(OpenURLParams(
//       GURL("http://foo/2"), GURL(), WindowOpenDisposition::CURRENT_TAB,
//       ui::PAGE_TRANSITION_TYPED, false));
//   CommitPendingLoad(controller);
//
// Subclasses must invoke BrowserWithTestWindowTest::SetUp as it is responsible
// for creating the various objects of this class.
class BrowserWithTestWindowTest : public testing::Test {
 public:
  // Trait which requests construction of a hosted app.
  struct HostedApp {};

  struct ValidTraits {
    explicit ValidTraits(content::BrowserTaskEnvironment::ValidTraits);
    explicit ValidTraits(HostedApp);
    explicit ValidTraits(Browser::Type);

    // TODO(alexclarke): Make content::BrowserTaskEnvironment::ValidTraits
    // imply this.
    explicit ValidTraits(base::test::TaskEnvironment::ValidTraits);
  };

  // Creates a BrowserWithTestWindowTest with zero or more traits. By default
  // the initial window will be a tabbed browser created on the native desktop,
  // which is not a hosted app.
  template <
      typename... TaskEnvironmentTraits,
      class CheckArgumentsAreValid = std::enable_if_t<
          base::trait_helpers::AreValidTraits<ValidTraits,
                                              TaskEnvironmentTraits...>::value>>
  NOINLINE explicit BrowserWithTestWindowTest(TaskEnvironmentTraits... traits)
      : BrowserWithTestWindowTest(
            std::make_unique<content::BrowserTaskEnvironment>(
                base::trait_helpers::Exclude<HostedApp, Browser::Type>::Filter(
                    traits)...),
            base::trait_helpers::GetEnum<Browser::Type, Browser::TYPE_NORMAL>(
                traits...),
            base::trait_helpers::HasTrait<HostedApp,
                                          TaskEnvironmentTraits...>()) {}

  ~BrowserWithTestWindowTest() override;

  void SetUp() override;
  void TearDown() override;

 protected:
  BrowserWindow* window() const { return window_.get(); }

  Browser* browser() const { return browser_.get(); }
  void set_browser(Browser* browser) { browser_.reset(browser); }
  Browser* release_browser() WARN_UNUSED_RESULT { return browser_.release(); }

  TestingProfile* profile() const { return profile_; }

  TestingProfile* GetProfile() { return profile_; }

  TestingProfileManager* profile_manager() { return profile_manager_.get(); }

  content::BrowserTaskEnvironment* task_environment() {
    return task_environment_.get();
  }

  network::TestURLLoaderFactory* test_url_loader_factory() {
    return &test_url_loader_factory_;
  }

  BrowserWindow* release_browser_window() WARN_UNUSED_RESULT {
    return window_.release();
  }

#if defined(OS_CHROMEOS)
  ash::AshTestHelper* ash_test_helper() { return &ash_test_helper_; }
#endif

  // The context to help determine desktop type when creating new Widgets.
  gfx::NativeWindow GetContext();

  // Adds a tab to |browser| with the given URL and commits the load.
  // This is a convenience function. The new tab will be added at index 0.
  void AddTab(Browser* browser, const GURL& url);

  // Commits the pending load on the given controller. It will keep the
  // URL of the pending load. If there is no pending load, this does nothing.
  void CommitPendingLoad(content::NavigationController* controller);

  // Creates a pending navigation on the given navigation controller to the
  // given URL with the default parameters and the commits the load with a page
  // ID one larger than any seen. This emulates what happens on a new
  // navigation.
  void NavigateAndCommit(content::NavigationController* controller,
                         const GURL& url);

  // Navigates the current tab. This is a wrapper around NavigateAndCommit.
  void NavigateAndCommitActiveTab(const GURL& url);

  // Set the |title| of the current tab.
  void NavigateAndCommitActiveTabWithTitle(Browser* browser,
                                           const GURL& url,
                                           const base::string16& title);

  // Creates the profile used by this test. The caller doesn't own the return
  // value.
  virtual TestingProfile* CreateProfile();

  // Returns a vector of testing factories to be used when creating the profile.
  // This is only used by CreateProfile(), and will be irrelevant if that
  // method is overridden.
  virtual TestingProfile::TestingFactories GetTestingFactories();

  // Creates the BrowserWindow used by this test. Can return NULL to use the
  // default window created by Browser.
  virtual std::unique_ptr<BrowserWindow> CreateBrowserWindow();

  // Creates the browser given |profile|, |browser_type|, |hosted_app|, and
  // |browser_window|.
  virtual std::unique_ptr<Browser> CreateBrowser(Profile* profile,
                                                 Browser::Type browser_type,
                                                 bool hosted_app,
                                                 BrowserWindow* browser_window);

#if defined(TOOLKIT_VIEWS)
  views::TestViewsDelegate* test_views_delegate() {
#if defined(OS_CHROMEOS)
    return test_views_delegate_.get();
#else
    return views_test_helper_->test_views_delegate();
#endif
  }
#endif

#if defined(OS_CHROMEOS)
  chromeos::ScopedCrosSettingsTestHelper* GetCrosSettingsHelper();
  chromeos::StubInstallAttributes* GetInstallAttributes();
#endif

 private:
  // The template constructor has to be in the header but it delegates to this
  // constructor to initialize all other members out-of-line.
  BrowserWithTestWindowTest(
      std::unique_ptr<content::BrowserTaskEnvironment> task_environment,
      Browser::Type browser_type,
      bool hosted_app);

  // We need to create a MessageLoop, otherwise a bunch of things fails.
  std::unique_ptr<content::BrowserTaskEnvironment> task_environment_;

#if defined(OS_CHROMEOS)
  chromeos::ScopedCrosSettingsTestHelper cros_settings_test_helper_;
  chromeos::ScopedTestUserManager test_user_manager_;
#endif

  TestingProfile* profile_;

  // test_url_loader_factory_ is declared before profile_manager_
  // to guarantee it outlives any profiles that might use it.
  network::TestURLLoaderFactory test_url_loader_factory_;

  std::unique_ptr<TestingProfileManager> profile_manager_;
  std::unique_ptr<BrowserWindow> window_;  // Usually a TestBrowserWindow.
  std::unique_ptr<Browser> browser_;

#if defined(OS_CHROMEOS)
  ash::AshTestHelper ash_test_helper_;
  std::unique_ptr<views::TestViewsDelegate> test_views_delegate_ =
      std::make_unique<ChromeTestViewsDelegate<ash::AshTestViewsDelegate>>();
#elif defined(TOOLKIT_VIEWS)
  std::unique_ptr<views::ScopedViewsTestHelper> views_test_helper_ =
      std::make_unique<views::ScopedViewsTestHelper>(
          std::make_unique<ChromeTestViewsDelegate<>>());
#endif

  // The existence of this object enables tests via RenderViewHostTester.
  std::unique_ptr<content::RenderViewHostTestEnabler> rvh_test_enabler_;

#if defined(OS_WIN)
  ui::ScopedOleInitializer ole_initializer_;
#endif

  // The type of browser to create (tabbed or popup).
  const Browser::Type browser_type_;

  // Whether the browser is part of a hosted app.
  const bool hosted_app_;

  DISALLOW_COPY_AND_ASSIGN(BrowserWithTestWindowTest);
};

#endif  // CHROME_TEST_BASE_BROWSER_WITH_TEST_WINDOW_TEST_H_