// 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/browser/chromeos/extensions/wallpaper_private_api.h"

#include <memory>

#include "base/macros.h"
#include "base/memory/ptr_util.h"
#include "chrome/browser/chromeos/login/users/fake_chrome_user_manager.h"
#include "chrome/browser/chromeos/settings/scoped_cros_settings_test_helper.h"
#include "chrome/browser/ui/ash/test_wallpaper_controller.h"
#include "chrome/browser/ui/ash/wallpaper_controller_client.h"
#include "chromeos/cryptohome/system_salt_getter.h"
#include "components/account_id/account_id.h"
#include "components/user_manager/scoped_user_manager.h"
#include "content/public/test/test_browser_thread_bundle.h"
#include "extensions/browser/api_test_utils.h"
#include "testing/gtest/include/gtest/gtest.h"

namespace {

constexpr char kTestAccount[] = "user@test.com";

}  // namespace

class WallpaperPrivateApiUnittest : public testing::Test {
 public:
  WallpaperPrivateApiUnittest()
      : thread_bundle_(std::make_unique<content::TestBrowserThreadBundle>()),
        fake_user_manager_(new chromeos::FakeChromeUserManager()),
        scoped_user_manager_(base::WrapUnique(fake_user_manager_)) {}

  ~WallpaperPrivateApiUnittest() override = default;

  void SetUp() override {
    // Required for WallpaperControllerClient.
    chromeos::SystemSaltGetter::Initialize();
  }

  void TearDown() override {
    chromeos::SystemSaltGetter::Shutdown();
  }

 protected:
  chromeos::FakeChromeUserManager* fake_user_manager() {
    return fake_user_manager_;
  }

 private:
  std::unique_ptr<content::TestBrowserThreadBundle> thread_bundle_;

  chromeos::ScopedCrosSettingsTestHelper cros_settings_test_helper_;

  chromeos::FakeChromeUserManager* fake_user_manager_;

  user_manager::ScopedUserManager scoped_user_manager_;

  DISALLOW_COPY_AND_ASSIGN(WallpaperPrivateApiUnittest);
};

// Test wallpaperPrivate.resetWallpaper() function. Regression test for
// https://crbug.com/830157.
TEST_F(WallpaperPrivateApiUnittest, ResetWallpaper) {
  chromeos::SystemSaltGetter::Get()->SetRawSaltForTesting(
      chromeos::SystemSaltGetter::RawSalt({1, 2, 3, 4, 5, 6, 7, 8}));

  WallpaperControllerClient client;
  TestWallpaperController test_controller;
  client.InitForTesting(test_controller.CreateInterfacePtr());
  fake_user_manager()->AddUser(AccountId::FromUserEmail(kTestAccount));

  {
    auto function =
        base::MakeRefCounted<WallpaperPrivateResetWallpaperFunction>();
    EXPECT_TRUE(
        extensions::api_test_utils::RunFunction(function.get(), "[]", nullptr));
  }

  client.FlushForTesting();
  // Expect SetDefaultWallpaper() to be called exactly once.
  EXPECT_EQ(1, test_controller.set_default_wallpaper_count());
}