base/path_service_unittest.cc

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "base/path_service.h"
   6
   7 #include "base/basictypes.h"
   8 #include "base/file_util.h"
   9 #include "base/files/file_path.h"
  10 #include "base/files/scoped_temp_dir.h"
  11 #include "base/strings/string_util.h"
  12 #include "build/build_config.h"
  13 #include "testing/gtest/include/gtest/gtest-spi.h"
  14 #include "testing/gtest/include/gtest/gtest.h"
  15 #include "testing/platform_test.h"
  16
  17 #if defined(OS_WIN)
  18 #include <userenv.h>
  19 #include "base/win/windows_version.h"
  20 // userenv.dll is required for GetDefaultUserProfileDirectory().
  21 #pragma comment(lib, "userenv.lib")
  22 #endif
  23
  24 namespace {
  25
  26 // Returns true if PathService::Get returns true and sets the path parameter
  27 // to non-empty for the given PathService::DirType enumeration value.
  28 bool ReturnsValidPath(int dir_type) {
  29   base::FilePath path;
  30   bool result = PathService::Get(dir_type, &path);
  31
  32   // Some paths might not exist on some platforms in which case confirming
  33   // |result| is true and !path.empty() is the best we can do.
  34   bool check_path_exists = true;
  35 #if defined(OS_POSIX)
  36   // If chromium has never been started on this account, the cache path may not
  37   // exist.
  38   if (dir_type == base::DIR_CACHE)
  39     check_path_exists = false;
  40 #endif
  41 #if defined(OS_LINUX)
  42   // On the linux try-bots: a path is returned (e.g. /home/chrome-bot/Desktop),
  43   // but it doesn't exist.
  44   if (dir_type == base::DIR_USER_DESKTOP)
  45     check_path_exists = false;
  46 #endif
  47 #if defined(OS_WIN)
  48   if (dir_type == base::DIR_DEFAULT_USER_QUICK_LAUNCH) {
  49     // On Windows XP, the Quick Launch folder for the "Default User" doesn't
  50     // exist by default. At least confirm that the path returned begins with the
  51     // Default User's profile path.
  52     if (base::win::GetVersion() < base::win::VERSION_VISTA) {
  53       wchar_t default_profile_path[MAX_PATH];
  54       DWORD size = arraysize(default_profile_path);
  55       return (result &&
  56               ::GetDefaultUserProfileDirectory(default_profile_path, &size) &&
  57               StartsWith(path.value(), default_profile_path, false));
  58     }
  59   } else if (dir_type == base::DIR_TASKBAR_PINS) {
  60     // There is no pinned-to-taskbar shortcuts prior to Win7.
  61     if (base::win::GetVersion() < base::win::VERSION_WIN7)
  62       check_path_exists = false;
  63   }
  64 #endif
  65 #if defined(OS_MACOSX)
  66   if (dir_type != base::DIR_EXE && dir_type != base::DIR_MODULE &&
  67       dir_type != base::FILE_EXE && dir_type != base::FILE_MODULE) {
  68     if (path.ReferencesParent())
  69       return false;
  70   }
  71 #else
  72   if (path.ReferencesParent())
  73     return false;
  74 #endif
  75   return result && !path.empty() && (!check_path_exists ||
  76                                      file_util::PathExists(path));
  77 }
  78
  79 #if defined(OS_WIN)
  80 // Function to test any directory keys that are not supported on some versions
  81 // of Windows. Checks that the function fails and that the returned path is
  82 // empty.
  83 bool ReturnsInvalidPath(int dir_type) {
  84   base::FilePath path;
  85   bool result = PathService::Get(dir_type, &path);
  86   return !result && path.empty();
  87 }
  88 #endif
  89
  90 }  // namespace
  91
  92 // On the Mac this winds up using some autoreleased objects, so we need to
  93 // be a PlatformTest.
  94 typedef PlatformTest PathServiceTest;
  95
  96 // Test that all PathService::Get calls return a value and a true result
  97 // in the development environment.  (This test was created because a few
  98 // later changes to Get broke the semantics of the function and yielded the
  99 // correct value while returning false.)
 100 TEST_F(PathServiceTest, Get) {
 101   for (int key = base::PATH_START + 1; key < base::PATH_END; ++key) {
 102 #if defined(OS_ANDROID)
 103     if (key == base::FILE_MODULE || key == base::DIR_USER_DESKTOP)
 104       continue;  // Android doesn't implement FILE_MODULE and DIR_USER_DESKTOP;
 105 #elif defined(OS_IOS)
 106     if (key == base::DIR_USER_DESKTOP)
 107       continue;  // iOS doesn't implement DIR_USER_DESKTOP;
 108 #endif
 109     EXPECT_PRED1(ReturnsValidPath, key);
 110   }
 111 #if defined(OS_WIN)
 112   for (int key = base::PATH_WIN_START + 1; key < base::PATH_WIN_END; ++key) {
 113     bool valid = true;
 114     switch(key) {
 115       case base::DIR_LOCAL_APP_DATA_LOW:
 116         // DIR_LOCAL_APP_DATA_LOW is not supported prior Vista and is expected
 117         // to fail.
 118         valid = base::win::GetVersion() >= base::win::VERSION_VISTA;
 119         break;
 120       case base::DIR_APP_SHORTCUTS:
 121         // DIR_APP_SHORTCUTS is not supported prior Windows 8 and is expected to
 122         // fail.
 123         valid = base::win::GetVersion() >= base::win::VERSION_WIN8;
 124         break;
 125     }
 126
 127     if (valid)
 128       EXPECT_TRUE(ReturnsValidPath(key)) << key;
 129     else
 130       EXPECT_TRUE(ReturnsInvalidPath(key)) << key;
 131   }
 132 #elif defined(OS_MACOSX)
 133   for (int key = base::PATH_MAC_START + 1; key < base::PATH_MAC_END; ++key) {
 134     EXPECT_PRED1(ReturnsValidPath, key);
 135   }
 136 #elif defined(OS_ANDROID)
 137   for (int key = base::PATH_ANDROID_START + 1; key < base::PATH_ANDROID_END;
 138        ++key) {
 139     EXPECT_PRED1(ReturnsValidPath, key);
 140   }
 141 #elif defined(OS_POSIX)
 142   for (int key = base::PATH_POSIX_START + 1; key < base::PATH_POSIX_END;
 143        ++key) {
 144     EXPECT_PRED1(ReturnsValidPath, key);
 145   }
 146 #endif
 147 }
 148
 149 // test that all versions of the Override function of PathService do what they
 150 // are supposed to do.
 151 TEST_F(PathServiceTest, Override) {
 152   int my_special_key = 666;
 153   base::ScopedTempDir temp_dir;
 154   ASSERT_TRUE(temp_dir.CreateUniqueTempDir());
 155   base::FilePath fake_cache_dir(temp_dir.path().AppendASCII("cache"));
 156   // PathService::Override should always create the path provided if it doesn't
 157   // exist.
 158   EXPECT_TRUE(PathService::Override(my_special_key, fake_cache_dir));
 159   EXPECT_TRUE(file_util::PathExists(fake_cache_dir));
 160
 161   base::FilePath fake_cache_dir2(temp_dir.path().AppendASCII("cache2"));
 162   // PathService::OverrideAndCreateIfNeeded should obey the |create| parameter.
 163   PathService::OverrideAndCreateIfNeeded(my_special_key,
 164                                          fake_cache_dir2,
 165                                          false);
 166   EXPECT_FALSE(file_util::PathExists(fake_cache_dir2));
 167   EXPECT_TRUE(PathService::OverrideAndCreateIfNeeded(my_special_key,
 168                                                      fake_cache_dir2,
 169                                                      true));
 170   EXPECT_TRUE(file_util::PathExists(fake_cache_dir2));
 171 }
 172
 173 // Check if multiple overrides can co-exist.
 174 TEST_F(PathServiceTest, OverrideMultiple) {
 175   int my_special_key = 666;
 176   base::ScopedTempDir temp_dir;
 177   ASSERT_TRUE(temp_dir.CreateUniqueTempDir());
 178   base::FilePath fake_cache_dir1(temp_dir.path().AppendASCII("1"));
 179   EXPECT_TRUE(PathService::Override(my_special_key, fake_cache_dir1));
 180   EXPECT_TRUE(file_util::PathExists(fake_cache_dir1));
 181   ASSERT_EQ(1, file_util::WriteFile(fake_cache_dir1.AppendASCII("t1"), ".", 1));
 182
 183   base::FilePath fake_cache_dir2(temp_dir.path().AppendASCII("2"));
 184   EXPECT_TRUE(PathService::Override(my_special_key + 1, fake_cache_dir2));
 185   EXPECT_TRUE(file_util::PathExists(fake_cache_dir2));
 186   ASSERT_EQ(1, file_util::WriteFile(fake_cache_dir2.AppendASCII("t2"), ".", 1));
 187
 188   base::FilePath result;
 189   EXPECT_TRUE(PathService::Get(my_special_key, &result));
 190   // Override might have changed the path representation but our test file
 191   // should be still there.
 192   EXPECT_TRUE(file_util::PathExists(result.AppendASCII("t1")));
 193   EXPECT_TRUE(PathService::Get(my_special_key + 1, &result));
 194   EXPECT_TRUE(file_util::PathExists(result.AppendASCII("t2")));
 195 }
 196
 197 TEST_F(PathServiceTest, RemoveOverride) {
 198   // Before we start the test we have to call RemoveOverride at least once to
 199   // clear any overrides that might have been left from other tests.
 200   PathService::RemoveOverride(base::DIR_TEMP);
 201
 202   base::FilePath original_user_data_dir;
 203   EXPECT_TRUE(PathService::Get(base::DIR_TEMP, &original_user_data_dir));
 204   EXPECT_FALSE(PathService::RemoveOverride(base::DIR_TEMP));
 205
 206   base::ScopedTempDir temp_dir;
 207   ASSERT_TRUE(temp_dir.CreateUniqueTempDir());
 208   EXPECT_TRUE(PathService::Override(base::DIR_TEMP, temp_dir.path()));
 209   base::FilePath new_user_data_dir;
 210   EXPECT_TRUE(PathService::Get(base::DIR_TEMP, &new_user_data_dir));
 211   EXPECT_NE(original_user_data_dir, new_user_data_dir);
 212
 213   EXPECT_TRUE(PathService::RemoveOverride(base::DIR_TEMP));
 214   EXPECT_TRUE(PathService::Get(base::DIR_TEMP, &new_user_data_dir));
 215   EXPECT_EQ(original_user_data_dir, new_user_data_dir);
 216 }