// 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 "chrome/installer/util/shell_util.h"

#include <cguid.h>
#include <stddef.h>

#include <memory>
#include <vector>

#include "base/base_paths.h"
#include "base/base_paths_win.h"
#include "base/command_line.h"
#include "base/files/file_enumerator.h"
#include "base/files/file_path.h"
#include "base/files/file_util.h"
#include "base/files/scoped_temp_dir.h"
#include "base/md5.h"
#include "base/stl_util.h"
#include "base/strings/string16.h"
#include "base/strings/string_util.h"
#include "base/synchronization/cancellation_flag.h"
#include "base/test/scoped_path_override.h"
#include "base/test/test_reg_util_win.h"
#include "base/test/test_shortcut_win.h"
#include "base/win/registry.h"
#include "base/win/shortcut.h"
#include "base/win/windows_version.h"
#include "chrome/install_static/install_util.h"
#include "chrome/installer/util/install_util.h"
#include "chrome/installer/util/util_constants.h"
#include "testing/gtest/include/gtest/gtest.h"

namespace {

const wchar_t kManganeseExe[] = L"manganese.exe";
const wchar_t kIronExe[] = L"iron.exe";
const wchar_t kOtherIco[] = L"other.ico";

// For registry tests.
const wchar_t kTestProgid[] = L"TestApp";
const wchar_t kTestOpenCommand[] = L"C:\\test.exe";
const wchar_t kTestFileTypeName[] = L"Test File Type";
const wchar_t kTestIconPath[] = L"D:\\test.ico";
const wchar_t* kTestFileExtensions[] = {
    L"test1",
    L"test2",
};

// TODO(huangs): Separate this into generic shortcut tests and Chrome-specific
// tests. Specifically, we should not overly rely on getting shortcut properties
// from ShellUtil::AddDefaultShortcutProperties().
class ShellUtilShortcutTest : public testing::Test {
 protected:
  ShellUtilShortcutTest() : test_properties_(ShellUtil::CURRENT_USER) {}

  void SetUp() override {
    ASSERT_TRUE(temp_dir_.CreateUniqueTempDir());
    chrome_exe_ = temp_dir_.GetPath().Append(installer::kChromeExe);
    EXPECT_EQ(0, base::WriteFile(chrome_exe_, "", 0));

    manganese_exe_ = temp_dir_.GetPath().Append(kManganeseExe);
    EXPECT_EQ(0, base::WriteFile(manganese_exe_, "", 0));

    iron_exe_ = temp_dir_.GetPath().Append(kIronExe);
    EXPECT_EQ(0, base::WriteFile(iron_exe_, "", 0));

    other_ico_ = temp_dir_.GetPath().Append(kOtherIco);
    EXPECT_EQ(0, base::WriteFile(other_ico_, "", 0));

    ASSERT_TRUE(fake_user_desktop_.CreateUniqueTempDir());
    ASSERT_TRUE(fake_common_desktop_.CreateUniqueTempDir());
    ASSERT_TRUE(fake_user_quick_launch_.CreateUniqueTempDir());
    ASSERT_TRUE(fake_default_user_quick_launch_.CreateUniqueTempDir());
    ASSERT_TRUE(fake_start_menu_.CreateUniqueTempDir());
    ASSERT_TRUE(fake_common_start_menu_.CreateUniqueTempDir());
    user_desktop_override_.reset(new base::ScopedPathOverride(
        base::DIR_USER_DESKTOP, fake_user_desktop_.GetPath()));
    common_desktop_override_.reset(new base::ScopedPathOverride(
        base::DIR_COMMON_DESKTOP, fake_common_desktop_.GetPath()));
    user_quick_launch_override_.reset(new base::ScopedPathOverride(
        base::DIR_USER_QUICK_LAUNCH, fake_user_quick_launch_.GetPath()));
    start_menu_override_.reset(new base::ScopedPathOverride(
        base::DIR_START_MENU, fake_start_menu_.GetPath()));
    common_start_menu_override_.reset(new base::ScopedPathOverride(
        base::DIR_COMMON_START_MENU, fake_common_start_menu_.GetPath()));

    base::FilePath icon_path;
    base::CreateTemporaryFileInDir(temp_dir_.GetPath(), &icon_path);
    test_properties_.set_target(chrome_exe_);
    test_properties_.set_arguments(L"--test --chrome");
    test_properties_.set_description(L"Makes polar bears dance.");
    test_properties_.set_icon(icon_path, 7);
    test_properties_.set_app_id(L"Polar.Bear");

    // The CLSID below was randomly selected.
    static constexpr CLSID toast_activator_clsid = {
        0xb2a1d927,
        0xacd1,
        0x484a,
        {0x82, 0x82, 0xd5, 0xfc, 0x66, 0x56, 0x26, 0x4b}};
    test_properties_.set_toast_activator_clsid(toast_activator_clsid);
  }

  // Returns the expected path of a test shortcut. Returns an empty FilePath on
  // failure.
  base::FilePath GetExpectedShortcutPath(
      ShellUtil::ShortcutLocation location,
      const ShellUtil::ShortcutProperties& properties) {
    base::FilePath expected_path;
    switch (location) {
      case ShellUtil::SHORTCUT_LOCATION_DESKTOP:
        expected_path = (properties.level == ShellUtil::CURRENT_USER)
                            ? fake_user_desktop_.GetPath()
                            : fake_common_desktop_.GetPath();
        break;
      case ShellUtil::SHORTCUT_LOCATION_QUICK_LAUNCH:
        expected_path = fake_user_quick_launch_.GetPath();
        break;
      case ShellUtil::SHORTCUT_LOCATION_START_MENU_ROOT:
        expected_path = (properties.level == ShellUtil::CURRENT_USER)
                            ? fake_start_menu_.GetPath()
                            : fake_common_start_menu_.GetPath();
        break;
      case ShellUtil::SHORTCUT_LOCATION_START_MENU_CHROME_DIR_DEPRECATED:
        expected_path = (properties.level == ShellUtil::CURRENT_USER)
                            ? fake_start_menu_.GetPath()
                            : fake_common_start_menu_.GetPath();
        expected_path = expected_path.Append(
            InstallUtil::GetChromeShortcutDirNameDeprecated());
        break;
      default:
        ADD_FAILURE() << "Unknown location";
        return base::FilePath();
    }

    base::string16 shortcut_name = properties.has_shortcut_name()
                                       ? properties.shortcut_name
                                       : InstallUtil::GetShortcutName();
    shortcut_name.append(installer::kLnkExt);
    return expected_path.Append(shortcut_name);
  }

  // Validates that the shortcut at |location| matches |properties| (and
  // implicit default properties) for |dist|.
  // Note: This method doesn't verify the |pin_to_taskbar| property as it
  // implies real (non-mocked) state which is flaky to test.
  void ValidateChromeShortcut(
      ShellUtil::ShortcutLocation location,
      const ShellUtil::ShortcutProperties& properties) {
    base::FilePath expected_path(GetExpectedShortcutPath(location, properties));

    base::win::ShortcutProperties expected_properties;
    if (properties.has_target()) {
      expected_properties.set_target(properties.target);
      expected_properties.set_working_dir(properties.target.DirName());
    } else {
      expected_properties.set_target(chrome_exe_);
      expected_properties.set_working_dir(chrome_exe_.DirName());
    }

    if (properties.has_arguments())
      expected_properties.set_arguments(properties.arguments);
    else
      expected_properties.set_arguments(base::string16());

    if (properties.has_description())
      expected_properties.set_description(properties.description);
    else
      expected_properties.set_description(InstallUtil::GetAppDescription());

    if (properties.has_icon()) {
      expected_properties.set_icon(properties.icon, properties.icon_index);
    } else {
      int icon_index = install_static::GetIconResourceIndex();
      expected_properties.set_icon(chrome_exe_, icon_index);
    }

    if (properties.has_app_id()) {
      expected_properties.set_app_id(properties.app_id);
    } else {
      // Tests are always seen as user-level installs in ShellUtil.
      expected_properties.set_app_id(ShellUtil::GetBrowserModelId(true));
    }

    if (properties.has_toast_activator_clsid()) {
      expected_properties.set_toast_activator_clsid(
          properties.toast_activator_clsid);
    } else {
      expected_properties.set_toast_activator_clsid(CLSID_NULL);
    }

    base::win::ValidateShortcut(expected_path, expected_properties);
  }

  // A ShellUtil::ShortcutProperties object with common properties set already.
  ShellUtil::ShortcutProperties test_properties_;

  base::ScopedTempDir temp_dir_;
  base::ScopedTempDir fake_user_desktop_;
  base::ScopedTempDir fake_common_desktop_;
  base::ScopedTempDir fake_user_quick_launch_;
  base::ScopedTempDir fake_default_user_quick_launch_;
  base::ScopedTempDir fake_start_menu_;
  base::ScopedTempDir fake_common_start_menu_;
  std::unique_ptr<base::ScopedPathOverride> user_desktop_override_;
  std::unique_ptr<base::ScopedPathOverride> common_desktop_override_;
  std::unique_ptr<base::ScopedPathOverride> user_quick_launch_override_;
  std::unique_ptr<base::ScopedPathOverride> start_menu_override_;
  std::unique_ptr<base::ScopedPathOverride> common_start_menu_override_;

  base::FilePath chrome_exe_;
  base::FilePath manganese_exe_;
  base::FilePath iron_exe_;
  base::FilePath other_ico_;
};

}  // namespace

TEST_F(ShellUtilShortcutTest, GetShortcutPath) {
  base::FilePath path;

  ShellUtil::GetShortcutPath(ShellUtil::SHORTCUT_LOCATION_DESKTOP,
                             ShellUtil::CURRENT_USER, &path);
  EXPECT_EQ(fake_user_desktop_.GetPath(), path);

  ShellUtil::GetShortcutPath(ShellUtil::SHORTCUT_LOCATION_DESKTOP,
                             ShellUtil::SYSTEM_LEVEL, &path);
  EXPECT_EQ(fake_common_desktop_.GetPath(), path);

  ShellUtil::GetShortcutPath(ShellUtil::SHORTCUT_LOCATION_QUICK_LAUNCH,
                             ShellUtil::CURRENT_USER, &path);
  EXPECT_EQ(fake_user_quick_launch_.GetPath(), path);

  base::string16 start_menu_subfolder =
      InstallUtil::GetChromeShortcutDirNameDeprecated();
  ShellUtil::GetShortcutPath(
      ShellUtil::SHORTCUT_LOCATION_START_MENU_CHROME_DIR_DEPRECATED,
      ShellUtil::CURRENT_USER, &path);
  EXPECT_EQ(fake_start_menu_.GetPath().Append(start_menu_subfolder), path);

  ShellUtil::GetShortcutPath(
      ShellUtil::SHORTCUT_LOCATION_START_MENU_CHROME_DIR_DEPRECATED,
      ShellUtil::SYSTEM_LEVEL, &path);
  EXPECT_EQ(fake_common_start_menu_.GetPath().Append(start_menu_subfolder),
            path);
}

TEST_F(ShellUtilShortcutTest, MoveExistingShortcut) {
  test_properties_.set_shortcut_name(L"Bobo le shortcut");
  test_properties_.level = ShellUtil::SYSTEM_LEVEL;
  base::FilePath old_shortcut_path(GetExpectedShortcutPath(
      ShellUtil::SHORTCUT_LOCATION_START_MENU_CHROME_DIR_DEPRECATED,
      test_properties_));

  ASSERT_TRUE(ShellUtil::CreateOrUpdateShortcut(
      ShellUtil::SHORTCUT_LOCATION_START_MENU_CHROME_DIR_DEPRECATED,
      test_properties_, ShellUtil::SHELL_SHORTCUT_CREATE_ALWAYS));
  ValidateChromeShortcut(
      ShellUtil::SHORTCUT_LOCATION_START_MENU_CHROME_DIR_DEPRECATED,
      test_properties_);
  ASSERT_TRUE(base::PathExists(old_shortcut_path.DirName()));
  ASSERT_TRUE(base::PathExists(old_shortcut_path));

  ASSERT_TRUE(ShellUtil::MoveExistingShortcut(
      ShellUtil::SHORTCUT_LOCATION_START_MENU_CHROME_DIR_DEPRECATED,
      ShellUtil::SHORTCUT_LOCATION_START_MENU_ROOT, test_properties_));

  ValidateChromeShortcut(ShellUtil::SHORTCUT_LOCATION_START_MENU_ROOT,
                         test_properties_);
  ASSERT_FALSE(base::PathExists(old_shortcut_path));
  ASSERT_FALSE(base::PathExists(old_shortcut_path.DirName()));
}

TEST_F(ShellUtilShortcutTest, CreateChromeExeShortcutWithDefaultProperties) {
  ShellUtil::ShortcutProperties properties(ShellUtil::CURRENT_USER);
  ShellUtil::AddDefaultShortcutProperties(chrome_exe_, &properties);
  ASSERT_TRUE(ShellUtil::CreateOrUpdateShortcut(
      ShellUtil::SHORTCUT_LOCATION_DESKTOP, properties,
      ShellUtil::SHELL_SHORTCUT_CREATE_ALWAYS));
  ValidateChromeShortcut(ShellUtil::SHORTCUT_LOCATION_DESKTOP, properties);
}

TEST_F(ShellUtilShortcutTest, CreateStartMenuShortcutWithAllProperties) {
  test_properties_.set_shortcut_name(L"Bobo le shortcut");
  test_properties_.level = ShellUtil::SYSTEM_LEVEL;
  ASSERT_TRUE(ShellUtil::CreateOrUpdateShortcut(
      ShellUtil::SHORTCUT_LOCATION_START_MENU_CHROME_DIR_DEPRECATED,
      test_properties_, ShellUtil::SHELL_SHORTCUT_CREATE_ALWAYS));
  ValidateChromeShortcut(
      ShellUtil::SHORTCUT_LOCATION_START_MENU_CHROME_DIR_DEPRECATED,
      test_properties_);
}

TEST_F(ShellUtilShortcutTest, ReplaceSystemLevelDesktopShortcut) {
  test_properties_.level = ShellUtil::SYSTEM_LEVEL;
  ASSERT_TRUE(ShellUtil::CreateOrUpdateShortcut(
      ShellUtil::SHORTCUT_LOCATION_DESKTOP, test_properties_,
      ShellUtil::SHELL_SHORTCUT_CREATE_ALWAYS));

  ShellUtil::ShortcutProperties new_properties(ShellUtil::SYSTEM_LEVEL);
  ShellUtil::AddDefaultShortcutProperties(chrome_exe_, &new_properties);
  new_properties.set_description(L"New description");
  new_properties.set_arguments(L"--new-arguments");
  ASSERT_TRUE(ShellUtil::CreateOrUpdateShortcut(
      ShellUtil::SHORTCUT_LOCATION_DESKTOP, new_properties,
      ShellUtil::SHELL_SHORTCUT_REPLACE_EXISTING));

  // Expect the properties set in |new_properties| to be set as above and
  // properties that don't have a default value to be set back to their default
  // (as validated in ValidateChromeShortcut()) or unset if they don't .
  ShellUtil::ShortcutProperties expected_properties(new_properties);

  ValidateChromeShortcut(ShellUtil::SHORTCUT_LOCATION_DESKTOP,
                         expected_properties);
}

TEST_F(ShellUtilShortcutTest, UpdateQuickLaunchShortcutArguments) {
  ASSERT_TRUE(ShellUtil::CreateOrUpdateShortcut(
      ShellUtil::SHORTCUT_LOCATION_QUICK_LAUNCH, test_properties_,
      ShellUtil::SHELL_SHORTCUT_CREATE_ALWAYS));

  // Only changing one property, don't need all the defaults.
  ShellUtil::ShortcutProperties updated_properties(ShellUtil::CURRENT_USER);
  updated_properties.set_arguments(L"--updated --arguments");
  ASSERT_TRUE(ShellUtil::CreateOrUpdateShortcut(
      ShellUtil::SHORTCUT_LOCATION_QUICK_LAUNCH, updated_properties,
      ShellUtil::SHELL_SHORTCUT_UPDATE_EXISTING));

  // Expect the properties set in |updated_properties| to be set as above and
  // all other properties to remain unchanged.
  ShellUtil::ShortcutProperties expected_properties(test_properties_);
  expected_properties.set_arguments(updated_properties.arguments);

  ValidateChromeShortcut(ShellUtil::SHORTCUT_LOCATION_QUICK_LAUNCH,
                         expected_properties);
}

TEST_F(ShellUtilShortcutTest, CreateIfNoSystemLevel) {
  ASSERT_TRUE(ShellUtil::CreateOrUpdateShortcut(
      ShellUtil::SHORTCUT_LOCATION_DESKTOP, test_properties_,
      ShellUtil::SHELL_SHORTCUT_CREATE_IF_NO_SYSTEM_LEVEL));
  ValidateChromeShortcut(ShellUtil::SHORTCUT_LOCATION_DESKTOP,
                         test_properties_);
}

TEST_F(ShellUtilShortcutTest, CreateIfNoSystemLevelWithSystemLevelPresent) {
  base::string16 shortcut_name(InstallUtil::GetShortcutName() +
                               installer::kLnkExt);

  test_properties_.level = ShellUtil::SYSTEM_LEVEL;
  ASSERT_TRUE(ShellUtil::CreateOrUpdateShortcut(
      ShellUtil::SHORTCUT_LOCATION_DESKTOP, test_properties_,
      ShellUtil::SHELL_SHORTCUT_CREATE_ALWAYS));
  ASSERT_TRUE(
      base::PathExists(fake_common_desktop_.GetPath().Append(shortcut_name)));

  test_properties_.level = ShellUtil::CURRENT_USER;
  ASSERT_TRUE(ShellUtil::CreateOrUpdateShortcut(
      ShellUtil::SHORTCUT_LOCATION_DESKTOP, test_properties_,
      ShellUtil::SHELL_SHORTCUT_CREATE_IF_NO_SYSTEM_LEVEL));
  ASSERT_FALSE(
      base::PathExists(fake_user_desktop_.GetPath().Append(shortcut_name)));
}

TEST_F(ShellUtilShortcutTest, CreateIfNoSystemLevelStartMenu) {
  ASSERT_TRUE(ShellUtil::CreateOrUpdateShortcut(
      ShellUtil::SHORTCUT_LOCATION_START_MENU_CHROME_DIR_DEPRECATED,
      test_properties_, ShellUtil::SHELL_SHORTCUT_CREATE_IF_NO_SYSTEM_LEVEL));
  ValidateChromeShortcut(
      ShellUtil::SHORTCUT_LOCATION_START_MENU_CHROME_DIR_DEPRECATED,
      test_properties_);
}

TEST_F(ShellUtilShortcutTest, CreateAlwaysUserWithSystemLevelPresent) {
  base::string16 shortcut_name(InstallUtil::GetShortcutName() +
                               installer::kLnkExt);

  test_properties_.level = ShellUtil::SYSTEM_LEVEL;
  ASSERT_TRUE(ShellUtil::CreateOrUpdateShortcut(
      ShellUtil::SHORTCUT_LOCATION_DESKTOP, test_properties_,
      ShellUtil::SHELL_SHORTCUT_CREATE_ALWAYS));
  ASSERT_TRUE(
      base::PathExists(fake_common_desktop_.GetPath().Append(shortcut_name)));

  test_properties_.level = ShellUtil::CURRENT_USER;
  ASSERT_TRUE(ShellUtil::CreateOrUpdateShortcut(
      ShellUtil::SHORTCUT_LOCATION_DESKTOP, test_properties_,
      ShellUtil::SHELL_SHORTCUT_CREATE_ALWAYS));
  ASSERT_TRUE(
      base::PathExists(fake_user_desktop_.GetPath().Append(shortcut_name)));
}

TEST_F(ShellUtilShortcutTest, RemoveChromeShortcut) {
  ASSERT_TRUE(ShellUtil::CreateOrUpdateShortcut(
      ShellUtil::SHORTCUT_LOCATION_DESKTOP, test_properties_,
      ShellUtil::SHELL_SHORTCUT_CREATE_ALWAYS));
  base::FilePath shortcut_path = GetExpectedShortcutPath(
      ShellUtil::SHORTCUT_LOCATION_DESKTOP, test_properties_);
  ASSERT_TRUE(base::PathExists(shortcut_path));

  ASSERT_TRUE(ShellUtil::RemoveShortcuts(ShellUtil::SHORTCUT_LOCATION_DESKTOP,
                                         ShellUtil::CURRENT_USER, chrome_exe_));
  ASSERT_FALSE(base::PathExists(shortcut_path));
  ASSERT_TRUE(base::PathExists(shortcut_path.DirName()));
}

TEST_F(ShellUtilShortcutTest, RemoveSystemLevelChromeShortcut) {
  test_properties_.level = ShellUtil::SYSTEM_LEVEL;
  ASSERT_TRUE(ShellUtil::CreateOrUpdateShortcut(
      ShellUtil::SHORTCUT_LOCATION_DESKTOP, test_properties_,
      ShellUtil::SHELL_SHORTCUT_CREATE_ALWAYS));
  base::FilePath shortcut_path = GetExpectedShortcutPath(
      ShellUtil::SHORTCUT_LOCATION_DESKTOP, test_properties_);
  ASSERT_TRUE(base::PathExists(shortcut_path));

  ASSERT_TRUE(ShellUtil::RemoveShortcuts(ShellUtil::SHORTCUT_LOCATION_DESKTOP,
                                         ShellUtil::SYSTEM_LEVEL, chrome_exe_));
  ASSERT_FALSE(base::PathExists(shortcut_path));
  ASSERT_TRUE(base::PathExists(shortcut_path.DirName()));
}

TEST_F(ShellUtilShortcutTest, RemoveMultipleChromeShortcuts) {
  // Shortcut 1: targets "chrome.exe"; no arguments.
  test_properties_.set_shortcut_name(L"Chrome 1");
  test_properties_.set_arguments(L"");
  ASSERT_TRUE(ShellUtil::CreateOrUpdateShortcut(
      ShellUtil::SHORTCUT_LOCATION_DESKTOP, test_properties_,
      ShellUtil::SHELL_SHORTCUT_CREATE_ALWAYS));
  base::FilePath shortcut1_path = GetExpectedShortcutPath(
      ShellUtil::SHORTCUT_LOCATION_DESKTOP, test_properties_);
  ASSERT_TRUE(base::PathExists(shortcut1_path));

  // Shortcut 2: targets "chrome.exe"; has arguments; icon set to "other.ico".
  test_properties_.set_shortcut_name(L"Chrome 2");
  test_properties_.set_arguments(L"--profile-directory=\"Profile 2\"");
  test_properties_.set_icon(other_ico_, 0);
  ASSERT_TRUE(ShellUtil::CreateOrUpdateShortcut(
      ShellUtil::SHORTCUT_LOCATION_DESKTOP, test_properties_,
      ShellUtil::SHELL_SHORTCUT_CREATE_ALWAYS));
  base::FilePath shortcut2_path = GetExpectedShortcutPath(
      ShellUtil::SHORTCUT_LOCATION_DESKTOP, test_properties_);
  ASSERT_TRUE(base::PathExists(shortcut2_path));

  // Shortcut 3: targets "iron.exe"; has arguments; icon set to "chrome.exe".
  test_properties_.set_shortcut_name(L"Iron 3");
  test_properties_.set_target(iron_exe_);
  test_properties_.set_icon(chrome_exe_, 3);
  ASSERT_TRUE(ShellUtil::CreateOrUpdateShortcut(
      ShellUtil::SHORTCUT_LOCATION_DESKTOP, test_properties_,
      ShellUtil::SHELL_SHORTCUT_CREATE_ALWAYS));
  base::FilePath shortcut3_path = GetExpectedShortcutPath(
      ShellUtil::SHORTCUT_LOCATION_DESKTOP, test_properties_);
  ASSERT_TRUE(base::PathExists(shortcut3_path));

  // Remove shortcuts that target "chrome.exe".
  ASSERT_TRUE(ShellUtil::RemoveShortcuts(ShellUtil::SHORTCUT_LOCATION_DESKTOP,
                                         ShellUtil::CURRENT_USER, chrome_exe_));
  ASSERT_FALSE(base::PathExists(shortcut1_path));
  ASSERT_FALSE(base::PathExists(shortcut2_path));
  ASSERT_TRUE(base::PathExists(shortcut3_path));
  ASSERT_TRUE(base::PathExists(shortcut1_path.DirName()));
}

TEST_F(ShellUtilShortcutTest, RetargetShortcutsWithArgs) {
  ASSERT_TRUE(ShellUtil::CreateOrUpdateShortcut(
      ShellUtil::SHORTCUT_LOCATION_DESKTOP, test_properties_,
      ShellUtil::SHELL_SHORTCUT_CREATE_ALWAYS));
  ASSERT_TRUE(base::PathExists(GetExpectedShortcutPath(
      ShellUtil::SHORTCUT_LOCATION_DESKTOP, test_properties_)));

  base::FilePath new_exe = manganese_exe_;
  // Relies on the fact that |test_properties_| has non-empty arguments.
  ASSERT_TRUE(ShellUtil::RetargetShortcutsWithArgs(
      ShellUtil::SHORTCUT_LOCATION_DESKTOP, ShellUtil::CURRENT_USER,
      chrome_exe_, new_exe));

  ShellUtil::ShortcutProperties expected_properties(test_properties_);
  expected_properties.set_target(new_exe);
  ValidateChromeShortcut(ShellUtil::SHORTCUT_LOCATION_DESKTOP,
                         expected_properties);
}

TEST_F(ShellUtilShortcutTest, RetargetSystemLevelChromeShortcutsWithArgs) {
  test_properties_.level = ShellUtil::SYSTEM_LEVEL;
  ASSERT_TRUE(ShellUtil::CreateOrUpdateShortcut(
      ShellUtil::SHORTCUT_LOCATION_DESKTOP, test_properties_,
      ShellUtil::SHELL_SHORTCUT_CREATE_ALWAYS));
  ASSERT_TRUE(base::PathExists(GetExpectedShortcutPath(
      ShellUtil::SHORTCUT_LOCATION_DESKTOP, test_properties_)));

  base::FilePath new_exe = manganese_exe_;
  // Relies on the fact that |test_properties_| has non-empty arguments.
  ASSERT_TRUE(ShellUtil::RetargetShortcutsWithArgs(
      ShellUtil::SHORTCUT_LOCATION_DESKTOP, ShellUtil::SYSTEM_LEVEL,
      chrome_exe_, new_exe));

  ShellUtil::ShortcutProperties expected_properties(test_properties_);
  expected_properties.set_target(new_exe);
  ValidateChromeShortcut(ShellUtil::SHORTCUT_LOCATION_DESKTOP,
                         expected_properties);
}

TEST_F(ShellUtilShortcutTest, RetargetChromeShortcutsWithArgsEmpty) {
  // Shortcut 1: targets "chrome.exe"; no arguments.
  test_properties_.set_shortcut_name(L"Chrome 1");
  test_properties_.set_arguments(L"");
  ASSERT_TRUE(ShellUtil::CreateOrUpdateShortcut(
      ShellUtil::SHORTCUT_LOCATION_DESKTOP, test_properties_,
      ShellUtil::SHELL_SHORTCUT_CREATE_ALWAYS));
  ASSERT_TRUE(base::PathExists(GetExpectedShortcutPath(
      ShellUtil::SHORTCUT_LOCATION_DESKTOP, test_properties_)));
  ShellUtil::ShortcutProperties expected_properties1(test_properties_);

  // Shortcut 2: targets "chrome.exe"; has arguments.
  test_properties_.set_shortcut_name(L"Chrome 2");
  test_properties_.set_arguments(L"--profile-directory=\"Profile 2\"");
  ASSERT_TRUE(ShellUtil::CreateOrUpdateShortcut(
      ShellUtil::SHORTCUT_LOCATION_DESKTOP, test_properties_,
      ShellUtil::SHELL_SHORTCUT_CREATE_ALWAYS));
  ASSERT_TRUE(base::PathExists(GetExpectedShortcutPath(
      ShellUtil::SHORTCUT_LOCATION_DESKTOP, test_properties_)));
  ShellUtil::ShortcutProperties expected_properties2(test_properties_);

  // Retarget shortcuts: replace "chrome.exe" with "manganese.exe". Only
  // shortcuts with non-empty arguments (i.e., shortcut 2) gets updated.
  base::FilePath new_exe = manganese_exe_;
  ASSERT_TRUE(ShellUtil::RetargetShortcutsWithArgs(
      ShellUtil::SHORTCUT_LOCATION_DESKTOP, ShellUtil::CURRENT_USER,
      chrome_exe_, new_exe));

  // Verify shortcut 1: no change.
  ValidateChromeShortcut(ShellUtil::SHORTCUT_LOCATION_DESKTOP,
                         expected_properties1);

  // Verify shortcut 2: target => "manganese.exe".
  expected_properties2.set_target(new_exe);
  ValidateChromeShortcut(ShellUtil::SHORTCUT_LOCATION_DESKTOP,
                         expected_properties2);
}

TEST_F(ShellUtilShortcutTest, RetargetChromeShortcutsWithArgsIcon) {
  const int kTestIconIndex1 = 3;
  const int kTestIconIndex2 = 5;
  const int kTestIconIndex3 = 8;

  // Shortcut 1: targets "chrome.exe"; icon same as target.
  test_properties_.set_shortcut_name(L"Chrome 1");
  test_properties_.set_icon(test_properties_.target, kTestIconIndex1);
  ASSERT_TRUE(ShellUtil::CreateOrUpdateShortcut(
      ShellUtil::SHORTCUT_LOCATION_DESKTOP, test_properties_,
      ShellUtil::SHELL_SHORTCUT_CREATE_ALWAYS));
  ASSERT_TRUE(base::PathExists(GetExpectedShortcutPath(
      ShellUtil::SHORTCUT_LOCATION_DESKTOP, test_properties_)));
  ShellUtil::ShortcutProperties expected_properties1(test_properties_);

  // Shortcut 2: targets "chrome.exe"; icon set to "other.ico".
  test_properties_.set_shortcut_name(L"Chrome 2");
  test_properties_.set_icon(other_ico_, kTestIconIndex2);
  ASSERT_TRUE(ShellUtil::CreateOrUpdateShortcut(
      ShellUtil::SHORTCUT_LOCATION_DESKTOP, test_properties_,
      ShellUtil::SHELL_SHORTCUT_CREATE_ALWAYS));
  ASSERT_TRUE(base::PathExists(GetExpectedShortcutPath(
      ShellUtil::SHORTCUT_LOCATION_DESKTOP, test_properties_)));
  ShellUtil::ShortcutProperties expected_properties2(test_properties_);

  // Shortcut 3: targets "iron.exe"; icon set to "chrome.exe".
  test_properties_.set_target(iron_exe_);
  test_properties_.set_shortcut_name(L"Iron 3");
  test_properties_.set_icon(chrome_exe_, kTestIconIndex3);
  ASSERT_TRUE(ShellUtil::CreateOrUpdateShortcut(
      ShellUtil::SHORTCUT_LOCATION_DESKTOP, test_properties_,
      ShellUtil::SHELL_SHORTCUT_CREATE_ALWAYS));
  ASSERT_TRUE(base::PathExists(GetExpectedShortcutPath(
      ShellUtil::SHORTCUT_LOCATION_DESKTOP, test_properties_)));
  ShellUtil::ShortcutProperties expected_properties3(test_properties_);

  // Retarget shortcuts: replace "chrome.exe" with "manganese.exe".
  // Relies on the fact that |test_properties_| has non-empty arguments.
  base::FilePath new_exe = manganese_exe_;
  ASSERT_TRUE(ShellUtil::RetargetShortcutsWithArgs(
      ShellUtil::SHORTCUT_LOCATION_DESKTOP, ShellUtil::CURRENT_USER,
      chrome_exe_, new_exe));

  // Verify shortcut 1: target & icon => "manganese.exe", kept same icon index.
  expected_properties1.set_target(new_exe);
  expected_properties1.set_icon(new_exe, kTestIconIndex1);
  ValidateChromeShortcut(ShellUtil::SHORTCUT_LOCATION_DESKTOP,
                         expected_properties1);

  // Verify shortcut 2: target => "manganese.exe", kept icon.
  expected_properties2.set_target(new_exe);
  ValidateChromeShortcut(ShellUtil::SHORTCUT_LOCATION_DESKTOP,
                         expected_properties2);

  // Verify shortcut 3: no change, since target doesn't match.
  ValidateChromeShortcut(ShellUtil::SHORTCUT_LOCATION_DESKTOP,
                         expected_properties3);
}

TEST_F(ShellUtilShortcutTest, ClearShortcutArguments) {
  // Shortcut 1: targets "chrome.exe"; no arguments.
  test_properties_.set_shortcut_name(L"Chrome 1");
  test_properties_.set_arguments(L"");
  ASSERT_TRUE(ShellUtil::CreateOrUpdateShortcut(
      ShellUtil::SHORTCUT_LOCATION_DESKTOP, test_properties_,
      ShellUtil::SHELL_SHORTCUT_CREATE_ALWAYS));
  base::FilePath shortcut1_path = GetExpectedShortcutPath(
      ShellUtil::SHORTCUT_LOCATION_DESKTOP, test_properties_);
  ASSERT_TRUE(base::PathExists(shortcut1_path));
  ShellUtil::ShortcutProperties expected_properties1(test_properties_);

  // Shortcut 2: targets "chrome.exe"; has 1 whitelisted argument.
  test_properties_.set_shortcut_name(L"Chrome 2");
  test_properties_.set_arguments(L"--profile-directory=\"Profile 2\"");
  ASSERT_TRUE(ShellUtil::CreateOrUpdateShortcut(
      ShellUtil::SHORTCUT_LOCATION_DESKTOP, test_properties_,
      ShellUtil::SHELL_SHORTCUT_CREATE_ALWAYS));
  base::FilePath shortcut2_path = GetExpectedShortcutPath(
      ShellUtil::SHORTCUT_LOCATION_DESKTOP, test_properties_);
  ASSERT_TRUE(base::PathExists(shortcut2_path));
  ShellUtil::ShortcutProperties expected_properties2(test_properties_);

  // Shortcut 3: targets "chrome.exe"; has an unknown argument.
  test_properties_.set_shortcut_name(L"Chrome 3");
  test_properties_.set_arguments(L"foo.com");
  ASSERT_TRUE(ShellUtil::CreateOrUpdateShortcut(
      ShellUtil::SHORTCUT_LOCATION_DESKTOP, test_properties_,
      ShellUtil::SHELL_SHORTCUT_CREATE_ALWAYS));
  base::FilePath shortcut3_path = GetExpectedShortcutPath(
      ShellUtil::SHORTCUT_LOCATION_DESKTOP, test_properties_);
  ASSERT_TRUE(base::PathExists(shortcut3_path));
  ShellUtil::ShortcutProperties expected_properties3(test_properties_);

  // Shortcut 4: targets "chrome.exe"; has both unknown and known arguments.
  test_properties_.set_shortcut_name(L"Chrome 4");
  test_properties_.set_arguments(L"foo.com --show-app-list");
  ASSERT_TRUE(ShellUtil::CreateOrUpdateShortcut(
      ShellUtil::SHORTCUT_LOCATION_DESKTOP, test_properties_,
      ShellUtil::SHELL_SHORTCUT_CREATE_ALWAYS));
  base::FilePath shortcut4_path = GetExpectedShortcutPath(
      ShellUtil::SHORTCUT_LOCATION_DESKTOP, test_properties_);
  ASSERT_TRUE(base::PathExists(shortcut4_path));
  ShellUtil::ShortcutProperties expected_properties4(test_properties_);

  // List the shortcuts.
  std::vector<std::pair<base::FilePath, base::string16> > shortcuts;
  EXPECT_TRUE(ShellUtil::ShortcutListMaybeRemoveUnknownArgs(
      ShellUtil::SHORTCUT_LOCATION_DESKTOP,
      ShellUtil::CURRENT_USER,
      chrome_exe_,
      false,
      NULL,
      &shortcuts));
  ASSERT_EQ(2u, shortcuts.size());
  std::pair<base::FilePath, base::string16> shortcut3 =
      shortcuts[0].first == shortcut3_path ? shortcuts[0] : shortcuts[1];
  std::pair<base::FilePath, base::string16> shortcut4 =
      shortcuts[0].first == shortcut4_path ? shortcuts[0] : shortcuts[1];
  EXPECT_EQ(shortcut3_path, shortcut3.first);
  EXPECT_EQ(L"foo.com", shortcut3.second);
  EXPECT_EQ(shortcut4_path, shortcut4.first);
  EXPECT_EQ(L"foo.com --show-app-list", shortcut4.second);

  // Clear shortcuts.
  shortcuts.clear();
  EXPECT_TRUE(ShellUtil::ShortcutListMaybeRemoveUnknownArgs(
      ShellUtil::SHORTCUT_LOCATION_DESKTOP,
      ShellUtil::CURRENT_USER,
      chrome_exe_,
      true,
      NULL,
      &shortcuts));
  ASSERT_EQ(2u, shortcuts.size());
  shortcut3 = shortcuts[0].first == shortcut3_path ? shortcuts[0] :
                                                     shortcuts[1];
  shortcut4 = shortcuts[0].first == shortcut4_path ? shortcuts[0] :
                                                     shortcuts[1];
  EXPECT_EQ(shortcut3_path, shortcut3.first);
  EXPECT_EQ(L"foo.com", shortcut3.second);
  EXPECT_EQ(shortcut4_path, shortcut4.first);
  EXPECT_EQ(L"foo.com --show-app-list", shortcut4.second);

  ValidateChromeShortcut(ShellUtil::SHORTCUT_LOCATION_DESKTOP,
                         expected_properties1);
  ValidateChromeShortcut(ShellUtil::SHORTCUT_LOCATION_DESKTOP,
                         expected_properties2);
  expected_properties3.set_arguments(base::string16());
  ValidateChromeShortcut(ShellUtil::SHORTCUT_LOCATION_DESKTOP,
                         expected_properties3);
  expected_properties4.set_arguments(L"--show-app-list");
  ValidateChromeShortcut(ShellUtil::SHORTCUT_LOCATION_DESKTOP,
                         expected_properties4);
}

TEST_F(ShellUtilShortcutTest, CreateMultipleStartMenuShortcutsAndRemoveFolder) {
  ASSERT_TRUE(ShellUtil::CreateOrUpdateShortcut(
      ShellUtil::SHORTCUT_LOCATION_START_MENU_CHROME_DIR_DEPRECATED,
      test_properties_, ShellUtil::SHELL_SHORTCUT_CREATE_ALWAYS));
  ASSERT_TRUE(ShellUtil::CreateOrUpdateShortcut(
      ShellUtil::SHORTCUT_LOCATION_START_MENU_CHROME_APPS_DIR, test_properties_,
      ShellUtil::SHELL_SHORTCUT_CREATE_ALWAYS));
  test_properties_.set_shortcut_name(L"A second shortcut");
  ASSERT_TRUE(ShellUtil::CreateOrUpdateShortcut(
      ShellUtil::SHORTCUT_LOCATION_START_MENU_CHROME_DIR_DEPRECATED,
      test_properties_, ShellUtil::SHELL_SHORTCUT_CREATE_ALWAYS));
  ASSERT_TRUE(ShellUtil::CreateOrUpdateShortcut(
      ShellUtil::SHORTCUT_LOCATION_START_MENU_CHROME_APPS_DIR, test_properties_,
      ShellUtil::SHELL_SHORTCUT_CREATE_ALWAYS));

  base::FilePath chrome_shortcut_folder(fake_start_menu_.GetPath().Append(
      InstallUtil::GetChromeShortcutDirNameDeprecated()));
  base::FilePath chrome_apps_shortcut_folder(fake_start_menu_.GetPath().Append(
      InstallUtil::GetChromeAppsShortcutDirName()));

  base::FileEnumerator chrome_file_counter(chrome_shortcut_folder, false,
                                           base::FileEnumerator::FILES);
  int count = 0;
  while (!chrome_file_counter.Next().empty())
    ++count;
  EXPECT_EQ(2, count);

  base::FileEnumerator chrome_apps_file_counter(chrome_apps_shortcut_folder,
                                                false,
                                                base::FileEnumerator::FILES);
  count = 0;
  while (!chrome_apps_file_counter.Next().empty())
    ++count;
  EXPECT_EQ(2, count);

  ASSERT_TRUE(base::PathExists(chrome_shortcut_folder));
  ASSERT_TRUE(ShellUtil::RemoveShortcuts(
      ShellUtil::SHORTCUT_LOCATION_START_MENU_CHROME_DIR_DEPRECATED,
      ShellUtil::CURRENT_USER, chrome_exe_));
  ASSERT_FALSE(base::PathExists(chrome_shortcut_folder));

  ASSERT_TRUE(base::PathExists(chrome_apps_shortcut_folder));
  ASSERT_TRUE(ShellUtil::RemoveShortcuts(
      ShellUtil::SHORTCUT_LOCATION_START_MENU_CHROME_APPS_DIR,
      ShellUtil::CURRENT_USER, chrome_exe_));
  ASSERT_FALSE(base::PathExists(chrome_apps_shortcut_folder));
}

TEST_F(ShellUtilShortcutTest,
       DeleteStartMenuRootShortcutWithoutRemovingFolder) {
  ASSERT_TRUE(ShellUtil::CreateOrUpdateShortcut(
      ShellUtil::SHORTCUT_LOCATION_START_MENU_ROOT, test_properties_,
      ShellUtil::SHELL_SHORTCUT_CREATE_ALWAYS));

  base::string16 shortcut_name(InstallUtil::GetShortcutName() +
                               installer::kLnkExt);
  base::FilePath shortcut_path(
      fake_start_menu_.GetPath().Append(shortcut_name));

  ASSERT_TRUE(base::PathExists(fake_start_menu_.GetPath()));
  ASSERT_TRUE(base::PathExists(shortcut_path));
  ASSERT_TRUE(
      ShellUtil::RemoveShortcuts(ShellUtil::SHORTCUT_LOCATION_START_MENU_ROOT,
                                 ShellUtil::CURRENT_USER, chrome_exe_));
  // The shortcut should be removed but the "Start Menu" root directory should
  // remain.
  ASSERT_TRUE(base::PathExists(fake_start_menu_.GetPath()));
  ASSERT_FALSE(base::PathExists(shortcut_path));
}

TEST_F(ShellUtilShortcutTest, DontRemoveChromeShortcutIfPointsToAnotherChrome) {
  base::ScopedTempDir other_exe_dir;
  ASSERT_TRUE(other_exe_dir.CreateUniqueTempDir());
  base::FilePath other_chrome_exe =
      other_exe_dir.GetPath().Append(installer::kChromeExe);
  EXPECT_EQ(0, base::WriteFile(other_chrome_exe, "", 0));

  test_properties_.set_target(other_chrome_exe);
  ASSERT_TRUE(ShellUtil::CreateOrUpdateShortcut(
      ShellUtil::SHORTCUT_LOCATION_DESKTOP, test_properties_,
      ShellUtil::SHELL_SHORTCUT_CREATE_ALWAYS));

  base::string16 shortcut_name(InstallUtil::GetShortcutName() +
                               installer::kLnkExt);
  base::FilePath shortcut_path(
      fake_user_desktop_.GetPath().Append(shortcut_name));
  ASSERT_TRUE(base::PathExists(shortcut_path));

  // The shortcut shouldn't be removed as it was installed pointing to
  // |other_chrome_exe| and RemoveChromeShortcut() is being told that the
  // removed shortcut should point to |chrome_exe_|.
  ASSERT_TRUE(ShellUtil::RemoveShortcuts(ShellUtil::SHORTCUT_LOCATION_DESKTOP,
                                         ShellUtil::CURRENT_USER, chrome_exe_));
  ASSERT_TRUE(base::PathExists(shortcut_path));
  ASSERT_TRUE(base::PathExists(shortcut_path.DirName()));
}

class ShellUtilRegistryTest : public testing::Test {
 public:
  ShellUtilRegistryTest() {}

 protected:
  void SetUp() override {
    ASSERT_NO_FATAL_FAILURE(
        registry_overrides_.OverrideRegistry(HKEY_CURRENT_USER));

    // .test2 files already have a default application.
    base::win::RegKey key;
    ASSERT_EQ(
        ERROR_SUCCESS,
        key.Create(
            HKEY_CURRENT_USER, L"Software\\Classes\\.test2", KEY_ALL_ACCESS));
    EXPECT_EQ(ERROR_SUCCESS, key.WriteValue(L"", L"SomeOtherApp"));
  }

  static base::CommandLine OpenCommand() {
    base::FilePath open_command_path(kTestOpenCommand);
    base::CommandLine open_command(open_command_path);
    // The "%1" should automatically be quoted.
    open_command.AppendArg("%1");
    return open_command;
  }

  static std::set<base::string16> FileExtensions() {
    std::set<base::string16> file_extensions;
    for (size_t i = 0; i < base::size(kTestFileExtensions); ++i)
      file_extensions.insert(kTestFileExtensions[i]);
    return file_extensions;
  }

 private:
  registry_util::RegistryOverrideManager registry_overrides_;

  DISALLOW_COPY_AND_ASSIGN(ShellUtilRegistryTest);
};

TEST_F(ShellUtilRegistryTest, AddFileAssociations) {
  // Create file associations.
  EXPECT_TRUE(ShellUtil::AddFileAssociations(kTestProgid,
                                             OpenCommand(),
                                             kTestFileTypeName,
                                             base::FilePath(kTestIconPath),
                                             FileExtensions()));

  // Ensure that the registry keys have been correctly set.
  base::win::RegKey key;
  std::wstring value;
  ASSERT_EQ(
      ERROR_SUCCESS,
      key.Open(HKEY_CURRENT_USER, L"Software\\Classes\\TestApp", KEY_READ));
  EXPECT_EQ(ERROR_SUCCESS, key.ReadValue(L"", &value));
  EXPECT_EQ(L"Test File Type", value);
  ASSERT_EQ(ERROR_SUCCESS,
            key.Open(HKEY_CURRENT_USER,
                     L"Software\\Classes\\TestApp\\DefaultIcon",
                     KEY_READ));
  EXPECT_EQ(ERROR_SUCCESS, key.ReadValue(L"", &value));
  EXPECT_EQ(L"D:\\test.ico,0", value);
  ASSERT_EQ(ERROR_SUCCESS,
            key.Open(HKEY_CURRENT_USER,
                     L"Software\\Classes\\TestApp\\shell\\open\\command",
                     KEY_READ));
  EXPECT_EQ(ERROR_SUCCESS, key.ReadValue(L"", &value));
  EXPECT_EQ(L"\"C:\\test.exe\" \"%1\"", value);

  // .test1 should be default-associated with our test app.
  ASSERT_EQ(
      ERROR_SUCCESS,
      key.Open(HKEY_CURRENT_USER, L"Software\\Classes\\.test1", KEY_READ));
  EXPECT_EQ(ERROR_SUCCESS, key.ReadValue(L"", &value));
  EXPECT_EQ(L"TestApp", value);
  ASSERT_EQ(ERROR_SUCCESS,
            key.Open(HKEY_CURRENT_USER,
                     L"Software\\Classes\\.test1\\OpenWithProgids",
                     KEY_READ));
  EXPECT_TRUE(key.HasValue(L"TestApp"));
  EXPECT_EQ(ERROR_SUCCESS, key.ReadValue(L"TestApp", &value));
  EXPECT_EQ(L"", value);

  // .test2 should still be associated with the other app (should not have been
  // overridden). But it should have our app in its Open With list.
  ASSERT_EQ(
      ERROR_SUCCESS,
      key.Open(HKEY_CURRENT_USER, L"Software\\Classes\\.test2", KEY_READ));
  EXPECT_EQ(ERROR_SUCCESS, key.ReadValue(L"", &value));
  EXPECT_EQ(L"SomeOtherApp", value);
  ASSERT_EQ(ERROR_SUCCESS,
            key.Open(HKEY_CURRENT_USER,
                     L"Software\\Classes\\.test2\\OpenWithProgids",
                     KEY_READ));
  EXPECT_TRUE(key.HasValue(L"TestApp"));
  EXPECT_EQ(ERROR_SUCCESS, key.ReadValue(L"TestApp", &value));
  EXPECT_EQ(L"", value);
}

TEST_F(ShellUtilRegistryTest, DeleteFileAssociations) {
  // Create file associations.
  EXPECT_TRUE(ShellUtil::AddFileAssociations(kTestProgid,
                                             OpenCommand(),
                                             kTestFileTypeName,
                                             base::FilePath(kTestIconPath),
                                             FileExtensions()));

  // Delete them.
  EXPECT_TRUE(ShellUtil::DeleteFileAssociations(kTestProgid));

  // The class key should have been completely deleted.
  base::win::RegKey key;
  std::wstring value;
  ASSERT_NE(
      ERROR_SUCCESS,
      key.Open(HKEY_CURRENT_USER, L"Software\\Classes\\TestApp", KEY_READ));

  // We don't currently delete the associations with the particular extensions.
  // Still, ensure that .test2 is still associated with the other app.
  // TODO(mgiuca): Update this expectation when we delete the associations.
  ASSERT_EQ(
      ERROR_SUCCESS,
      key.Open(HKEY_CURRENT_USER, L"Software\\Classes\\.test2", KEY_READ));
  EXPECT_EQ(ERROR_SUCCESS, key.ReadValue(L"", &value));
  EXPECT_EQ(L"SomeOtherApp", value);
}

TEST(ShellUtilTest, BuildAppModelIdBasic) {
  std::vector<base::string16> components;
  const base::string16 base_app_id(install_static::GetBaseAppId());
  components.push_back(base_app_id);
  ASSERT_EQ(base_app_id, ShellUtil::BuildAppModelId(components));
}

TEST(ShellUtilTest, BuildAppModelIdManySmall) {
  std::vector<base::string16> components;
  const base::string16 suffixed_app_id(install_static::GetBaseAppId() +
                                       base::string16(L".gab"));
  components.push_back(suffixed_app_id);
  components.push_back(L"Default");
  components.push_back(L"Test");
  ASSERT_EQ(suffixed_app_id + L".Default.Test",
            ShellUtil::BuildAppModelId(components));
}

TEST(ShellUtilTest, BuildAppModelIdLongUsernameNormalProfile) {
  std::vector<base::string16> components;
  const base::string16 long_appname(
      L"Chrome.a_user_who_has_a_crazy_long_name_with_some_weird@symbols_in_it_"
      L"that_goes_over_64_characters");
  components.push_back(long_appname);
  components.push_back(L"Default");
  ASSERT_EQ(L"Chrome.a_user_wer_64_characters.Default",
            ShellUtil::BuildAppModelId(components));
}

TEST(ShellUtilTest, BuildAppModelIdLongEverything) {
  std::vector<base::string16> components;
  const base::string16 long_appname(L"Chrome.a_user_who_has_a_crazy_long_name_"
                                    L"with_some_weird@symbols_in_"
                                    L"it_" L"that_goes_over_64_characters");
  components.push_back(long_appname);
  components.push_back(
      L"A_crazy_profile_name_not_even_sure_whether_that_is_possible");
  const base::string16 constructed_app_id(
      ShellUtil::BuildAppModelId(components));
  ASSERT_LE(constructed_app_id.length(), installer::kMaxAppModelIdLength);
  ASSERT_EQ(L"Chrome.a_user_wer_64_characters.A_crazy_profilethat_is_possible",
            constructed_app_id);
}

TEST(ShellUtilTest, GetUserSpecificRegistrySuffix) {
  base::string16 suffix;
  ASSERT_TRUE(ShellUtil::GetUserSpecificRegistrySuffix(&suffix));
  ASSERT_TRUE(base::StartsWith(suffix, L".", base::CompareCase::SENSITIVE));
  ASSERT_EQ(27u, suffix.length());
  ASSERT_TRUE(base::ContainsOnlyChars(suffix.substr(1),
                                      L"ABCDEFGHIJKLMNOPQRSTUVWXYZ234567"));
}

TEST(ShellUtilTest, GetOldUserSpecificRegistrySuffix) {
  base::string16 suffix;
  ASSERT_TRUE(ShellUtil::GetOldUserSpecificRegistrySuffix(&suffix));
  ASSERT_TRUE(base::StartsWith(suffix, L".", base::CompareCase::SENSITIVE));

  wchar_t user_name[256];
  DWORD size = base::size(user_name);
  ASSERT_NE(0, ::GetUserName(user_name, &size));
  ASSERT_GE(size, 1U);
  ASSERT_STREQ(user_name, suffix.substr(1).c_str());
}