src/tools/gn/filesystem_utils_unittest.cc

   1 // Copyright (c) 2013 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/strings/string_util.h"
   6 #include "base/strings/utf_string_conversions.h"
   7 #include "build/build_config.h"
   8 #include "testing/gtest/include/gtest/gtest.h"
   9 #include "tools/gn/filesystem_utils.h"
  10
  11 TEST(FilesystemUtils, FileExtensionOffset) {
  12   EXPECT_EQ(std::string::npos, FindExtensionOffset(""));
  13   EXPECT_EQ(std::string::npos, FindExtensionOffset("foo/bar/baz"));
  14   EXPECT_EQ(4u, FindExtensionOffset("foo."));
  15   EXPECT_EQ(4u, FindExtensionOffset("f.o.bar"));
  16   EXPECT_EQ(std::string::npos, FindExtensionOffset("foo.bar/"));
  17   EXPECT_EQ(std::string::npos, FindExtensionOffset("foo.bar/baz"));
  18 }
  19
  20 TEST(FilesystemUtils, FindExtension) {
  21   std::string input;
  22   EXPECT_EQ("", FindExtension(&input).as_string());
  23   input = "foo/bar/baz";
  24   EXPECT_EQ("", FindExtension(&input).as_string());
  25   input = "foo.";
  26   EXPECT_EQ("", FindExtension(&input).as_string());
  27   input = "f.o.bar";
  28   EXPECT_EQ("bar", FindExtension(&input).as_string());
  29   input = "foo.bar/";
  30   EXPECT_EQ("", FindExtension(&input).as_string());
  31   input = "foo.bar/baz";
  32   EXPECT_EQ("", FindExtension(&input).as_string());
  33 }
  34
  35 TEST(FilesystemUtils, FindFilenameOffset) {
  36   EXPECT_EQ(0u, FindFilenameOffset(""));
  37   EXPECT_EQ(0u, FindFilenameOffset("foo"));
  38   EXPECT_EQ(4u, FindFilenameOffset("foo/"));
  39   EXPECT_EQ(4u, FindFilenameOffset("foo/bar"));
  40 }
  41
  42 TEST(FilesystemUtils, RemoveFilename) {
  43   std::string s;
  44
  45   RemoveFilename(&s);
  46   EXPECT_STREQ("", s.c_str());
  47
  48   s = "foo";
  49   RemoveFilename(&s);
  50   EXPECT_STREQ("", s.c_str());
  51
  52   s = "/";
  53   RemoveFilename(&s);
  54   EXPECT_STREQ("/", s.c_str());
  55
  56   s = "foo/bar";
  57   RemoveFilename(&s);
  58   EXPECT_STREQ("foo/", s.c_str());
  59
  60   s = "foo/bar/baz.cc";
  61   RemoveFilename(&s);
  62   EXPECT_STREQ("foo/bar/", s.c_str());
  63 }
  64
  65 TEST(FilesystemUtils, FindDir) {
  66   std::string input;
  67   EXPECT_EQ("", FindDir(&input));
  68   input = "/";
  69   EXPECT_EQ("/", FindDir(&input));
  70   input = "foo/";
  71   EXPECT_EQ("foo/", FindDir(&input));
  72   input = "foo/bar/baz";
  73   EXPECT_EQ("foo/bar/", FindDir(&input));
  74 }
  75
  76 TEST(FilesystemUtils, IsPathAbsolute) {
  77   EXPECT_TRUE(IsPathAbsolute("/foo/bar"));
  78   EXPECT_TRUE(IsPathAbsolute("/"));
  79   EXPECT_FALSE(IsPathAbsolute(""));
  80   EXPECT_FALSE(IsPathAbsolute("//"));
  81   EXPECT_FALSE(IsPathAbsolute("//foo/bar"));
  82
  83 #if defined(OS_WIN)
  84   EXPECT_TRUE(IsPathAbsolute("C:/foo"));
  85   EXPECT_TRUE(IsPathAbsolute("C:/"));
  86   EXPECT_TRUE(IsPathAbsolute("C:\\foo"));
  87   EXPECT_TRUE(IsPathAbsolute("C:\\"));
  88   EXPECT_TRUE(IsPathAbsolute("/C:/foo"));
  89   EXPECT_TRUE(IsPathAbsolute("/C:\\foo"));
  90 #endif
  91 }
  92
  93 TEST(FilesystemUtils, MakeAbsolutePathRelativeIfPossible) {
  94   std::string dest;
  95
  96 #if defined(OS_WIN)
  97   EXPECT_TRUE(MakeAbsolutePathRelativeIfPossible("C:\\base", "C:\\base\\foo",
  98                                                  &dest));
  99   EXPECT_EQ("//foo", dest);
 100   EXPECT_TRUE(MakeAbsolutePathRelativeIfPossible("C:\\base", "/C:/base/foo",
 101                                                  &dest));
 102   EXPECT_EQ("//foo", dest);
 103   EXPECT_TRUE(MakeAbsolutePathRelativeIfPossible("c:\\base", "C:\\base\\foo\\",
 104                                                  &dest));
 105   EXPECT_EQ("//foo\\", dest);
 106
 107   EXPECT_FALSE(MakeAbsolutePathRelativeIfPossible("C:\\base", "C:\\ba", &dest));
 108   EXPECT_FALSE(MakeAbsolutePathRelativeIfPossible("C:\\base",
 109                                                   "C:\\/notbase/foo",
 110                                                   &dest));
 111 #else
 112
 113   EXPECT_TRUE(MakeAbsolutePathRelativeIfPossible("/base", "/base/foo/", &dest));
 114   EXPECT_EQ("//foo/", dest);
 115   EXPECT_TRUE(MakeAbsolutePathRelativeIfPossible("/base", "/base/foo", &dest));
 116   EXPECT_EQ("//foo", dest);
 117   EXPECT_TRUE(MakeAbsolutePathRelativeIfPossible("/base/", "/base/foo/",
 118                                                  &dest));
 119   EXPECT_EQ("//foo/", dest);
 120
 121   EXPECT_FALSE(MakeAbsolutePathRelativeIfPossible("/base", "/ba", &dest));
 122   EXPECT_FALSE(MakeAbsolutePathRelativeIfPossible("/base", "/notbase/foo",
 123                                                   &dest));
 124 #endif
 125 }
 126
 127 TEST(FilesystemUtils, InvertDir) {
 128   EXPECT_TRUE(InvertDir(SourceDir()) == "");
 129   EXPECT_TRUE(InvertDir(SourceDir("/")) == "");
 130   EXPECT_TRUE(InvertDir(SourceDir("//")) == "");
 131
 132   EXPECT_TRUE(InvertDir(SourceDir("//foo/bar")) == "../../");
 133   EXPECT_TRUE(InvertDir(SourceDir("/foo/bar/")) == "../../");
 134 }
 135
 136 TEST(FilesystemUtils, NormalizePath) {
 137   std::string input;
 138
 139   NormalizePath(&input);
 140   EXPECT_EQ("", input);
 141
 142   input = "foo/bar.txt";
 143   NormalizePath(&input);
 144   EXPECT_EQ("foo/bar.txt", input);
 145
 146   input = ".";
 147   NormalizePath(&input);
 148   EXPECT_EQ("", input);
 149
 150   input = "..";
 151   NormalizePath(&input);
 152   EXPECT_EQ("..", input);
 153
 154   input = "foo//bar";
 155   NormalizePath(&input);
 156   EXPECT_EQ("foo/bar", input);
 157
 158   input = "//foo";
 159   NormalizePath(&input);
 160   EXPECT_EQ("//foo", input);
 161
 162   input = "foo/..//bar";
 163   NormalizePath(&input);
 164   EXPECT_EQ("bar", input);
 165
 166   input = "foo/../../bar";
 167   NormalizePath(&input);
 168   EXPECT_EQ("../bar", input);
 169
 170   input = "/../foo";  // Don't go aboe the root dir.
 171   NormalizePath(&input);
 172   EXPECT_EQ("/foo", input);
 173
 174   input = "//../foo";  // Don't go aboe the root dir.
 175   NormalizePath(&input);
 176   EXPECT_EQ("//foo", input);
 177
 178   input = "../foo";
 179   NormalizePath(&input);
 180   EXPECT_EQ("../foo", input);
 181
 182   input = "..";
 183   NormalizePath(&input);
 184   EXPECT_EQ("..", input);
 185
 186   input = "./././.";
 187   NormalizePath(&input);
 188   EXPECT_EQ("", input);
 189
 190   input = "../../..";
 191   NormalizePath(&input);
 192   EXPECT_EQ("../../..", input);
 193
 194   input = "../";
 195   NormalizePath(&input);
 196   EXPECT_EQ("../", input);
 197 }
 198
 199 TEST(FilesystemUtils, RebaseSourceAbsolutePath) {
 200   // Degenerate case.
 201   EXPECT_EQ(".", RebaseSourceAbsolutePath("//", SourceDir("//")));
 202   EXPECT_EQ(".",
 203             RebaseSourceAbsolutePath("//foo/bar/", SourceDir("//foo/bar/")));
 204
 205   // Going up the tree.
 206   EXPECT_EQ("../foo",
 207             RebaseSourceAbsolutePath("//foo", SourceDir("//bar/")));
 208   EXPECT_EQ("../foo/",
 209             RebaseSourceAbsolutePath("//foo/", SourceDir("//bar/")));
 210   EXPECT_EQ("../../foo",
 211             RebaseSourceAbsolutePath("//foo", SourceDir("//bar/moo")));
 212   EXPECT_EQ("../../foo/",
 213             RebaseSourceAbsolutePath("//foo/", SourceDir("//bar/moo")));
 214
 215   // Going down the tree.
 216   EXPECT_EQ("foo/bar",
 217             RebaseSourceAbsolutePath("//foo/bar", SourceDir("//")));
 218   EXPECT_EQ("foo/bar/",
 219             RebaseSourceAbsolutePath("//foo/bar/", SourceDir("//")));
 220
 221   // Going up and down the tree.
 222   EXPECT_EQ("../../foo/bar",
 223             RebaseSourceAbsolutePath("//foo/bar", SourceDir("//a/b/")));
 224   EXPECT_EQ("../../foo/bar/",
 225             RebaseSourceAbsolutePath("//foo/bar/", SourceDir("//a/b/")));
 226
 227   // Sharing prefix.
 228   EXPECT_EQ("foo",
 229             RebaseSourceAbsolutePath("//a/foo", SourceDir("//a/")));
 230   EXPECT_EQ("foo/",
 231             RebaseSourceAbsolutePath("//a/foo/", SourceDir("//a/")));
 232   EXPECT_EQ("foo",
 233             RebaseSourceAbsolutePath("//a/b/foo", SourceDir("//a/b/")));
 234   EXPECT_EQ("foo/",
 235             RebaseSourceAbsolutePath("//a/b/foo/", SourceDir("//a/b/")));
 236   EXPECT_EQ("foo/bar",
 237             RebaseSourceAbsolutePath("//a/b/foo/bar", SourceDir("//a/b/")));
 238   EXPECT_EQ("foo/bar/",
 239             RebaseSourceAbsolutePath("//a/b/foo/bar/", SourceDir("//a/b/")));
 240
 241   // One could argue about this case. Since the input doesn't have a slash it
 242   // would normally not be treated like a directory and we'd go up, which is
 243   // simpler. However, since it matches the output directory's name, we could
 244   // potentially infer that it's the same and return "." for this.
 245   EXPECT_EQ("../bar",
 246             RebaseSourceAbsolutePath("//foo/bar", SourceDir("//foo/bar/")));
 247 }