// 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 "base/file_util.h"
#include "base/sys_info.h"
#include "base/threading/platform_thread.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "testing/platform_test.h"

typedef PlatformTest SysInfoTest;
using base::FilePath;

#if defined(OS_POSIX) && !defined(OS_MACOSX) && !defined(OS_ANDROID)
TEST_F(SysInfoTest, MaxSharedMemorySize) {
  // We aren't actually testing that it's correct, just that it's sane.
  EXPECT_GT(base::SysInfo::MaxSharedMemorySize(), 0u);
}
#endif

TEST_F(SysInfoTest, NumProcs) {
  // We aren't actually testing that it's correct, just that it's sane.
  EXPECT_GE(base::SysInfo::NumberOfProcessors(), 1);
}

TEST_F(SysInfoTest, AmountOfMem) {
  // We aren't actually testing that it's correct, just that it's sane.
  EXPECT_GT(base::SysInfo::AmountOfPhysicalMemory(), 0);
  EXPECT_GT(base::SysInfo::AmountOfPhysicalMemoryMB(), 0);
}

TEST_F(SysInfoTest, AmountOfFreeDiskSpace) {
  // We aren't actually testing that it's correct, just that it's sane.
  FilePath tmp_path;
  ASSERT_TRUE(file_util::GetTempDir(&tmp_path));
  EXPECT_GT(base::SysInfo::AmountOfFreeDiskSpace(tmp_path), 0)
            << tmp_path.value();
}

#if defined(OS_WIN) || defined(OS_MACOSX) || defined(OS_CHROMEOS)
TEST_F(SysInfoTest, OperatingSystemVersionNumbers) {
  int32 os_major_version = -1;
  int32 os_minor_version = -1;
  int32 os_bugfix_version = -1;
  base::SysInfo::OperatingSystemVersionNumbers(&os_major_version,
                                               &os_minor_version,
                                               &os_bugfix_version);
  EXPECT_GT(os_major_version, -1);
  EXPECT_GT(os_minor_version, -1);
  EXPECT_GT(os_bugfix_version, -1);
}
#endif

TEST_F(SysInfoTest, Uptime) {
  int64 up_time_1 = base::SysInfo::Uptime();
  // UpTime() is implemented internally using TimeTicks::Now(), which documents
  // system resolution as being 1-15ms. Sleep a little longer than that.
  base::PlatformThread::Sleep(base::TimeDelta::FromMilliseconds(20));
  int64 up_time_2 = base::SysInfo::Uptime();
  EXPECT_GT(up_time_1, 0);
  EXPECT_GT(up_time_2, up_time_1);
}

#if defined(OS_CHROMEOS)
TEST_F(SysInfoTest, GoogleChromeOSVersionNumbers) {
  int32 os_major_version = -1;
  int32 os_minor_version = -1;
  int32 os_bugfix_version = -1;
  std::string lsb_release("FOO=1234123.34.5\n");
  lsb_release.append(base::SysInfo::GetLinuxStandardBaseVersionKey());
  lsb_release.append("=1.2.3.4\n");
  base::SysInfo::ParseLsbRelease(lsb_release,
                                 &os_major_version,
                                 &os_minor_version,
                                 &os_bugfix_version);
  EXPECT_EQ(1, os_major_version);
  EXPECT_EQ(2, os_minor_version);
  EXPECT_EQ(3, os_bugfix_version);
}

TEST_F(SysInfoTest, GoogleChromeOSVersionNumbersFirst) {
  int32 os_major_version = -1;
  int32 os_minor_version = -1;
  int32 os_bugfix_version = -1;
  std::string lsb_release(base::SysInfo::GetLinuxStandardBaseVersionKey());
  lsb_release.append("=1.2.3.4\n");
  lsb_release.append("FOO=1234123.34.5\n");
  base::SysInfo::ParseLsbRelease(lsb_release,
                                 &os_major_version,
                                 &os_minor_version,
                                 &os_bugfix_version);
  EXPECT_EQ(1, os_major_version);
  EXPECT_EQ(2, os_minor_version);
  EXPECT_EQ(3, os_bugfix_version);
}

TEST_F(SysInfoTest, GoogleChromeOSNoVersionNumbers) {
  int32 os_major_version = -1;
  int32 os_minor_version = -1;
  int32 os_bugfix_version = -1;
  std::string lsb_release("FOO=1234123.34.5\n");
  base::SysInfo::ParseLsbRelease(lsb_release,
                                 &os_major_version,
                                 &os_minor_version,
                                 &os_bugfix_version);
  EXPECT_EQ(-1, os_major_version);
  EXPECT_EQ(-1, os_minor_version);
  EXPECT_EQ(-1, os_bugfix_version);
}

#endif  // OS_CHROMEOS