metrics/base: log whether drives have seek penalties.

base/sys_info_unittest.cc

 // 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/environment.h"
 #include "base/files/file_util.h"
 #include "base/sys_info.h"
 #include "base/threading/platform_thread.h"
 #include "base/time/time.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "testing/platform_test.h"
 
+#if defined(OS_WIN)
+#include "base/win/windows_version.h"
+#endif
+
 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
 
@@ skipping 11 matching lines @@
 }
 
 TEST_F(SysInfoTest, AmountOfFreeDiskSpace) {
   // We aren't actually testing that it's correct, just that it's sane.
   FilePath tmp_path;
   ASSERT_TRUE(base::GetTempDir(&tmp_path));
   EXPECT_GT(base::SysInfo::AmountOfFreeDiskSpace(tmp_path), 0)
             << tmp_path.value();
 }
 
+TEST_F(SysInfoTest, HasSeekPenalty) {
+  FilePath tmp_path;
+  ASSERT_TRUE(base::GetTempDir(&tmp_path));
+
+  bool unused;
+  bool success = base::SysInfo::HasSeekPenalty(tmp_path, &unused);
+#if defined(OS_WIN)
+  EXPECT_EQ(base::win::GetVersion() >= base::win::VERSION_WIN7, success);
+#else
+  EXPECT_FALSE(success) << "Update if this gets implemented elsewhere.";
+#endif
+}
+
 #if defined(OS_WIN) || defined(OS_MACOSX)
 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);
@@ skipping 92 matching lines @@
   base::SysInfo::SetChromeOSVersionInfoForTest(kLsbRelease2, base::Time());
   EXPECT_TRUE(base::SysInfo::IsRunningOnChromeOS());
 
   const char kLsbRelease3[] =
       "CHROMEOS_RELEASE_NAME=Chromium OS\n";
   base::SysInfo::SetChromeOSVersionInfoForTest(kLsbRelease3, base::Time());
   EXPECT_TRUE(base::SysInfo::IsRunningOnChromeOS());
 }
 
 #endif  // OS_CHROMEOS