unittests/Support/Path.cpp

   1 //===- llvm/unittest/Support/Path.cpp - Path tests ------------------------===//
   2 //
   3 //                     The LLVM Compiler Infrastructure
   4 //
   5 // This file is distributed under the University of Illinois Open Source
   6 // License. See LICENSE.TXT for details.
   7 //
   8 //===----------------------------------------------------------------------===//
   9
  10 #include "llvm/Support/Path.h"
  11 #include "llvm/Support/ErrorHandling.h"
  12 #include "llvm/Support/FileSystem.h"
  13 #include "llvm/Support/MemoryBuffer.h"
  14 #include "llvm/Support/raw_ostream.h"
  15 #include "gtest/gtest.h"
  16
  17 using namespace llvm;
  18 using namespace llvm::sys;
  19
  20 #define ASSERT_NO_ERROR(x) \
  21   if (error_code ASSERT_NO_ERROR_ec = x) { \
  22     SmallString<128> MessageStorage; \
  23     raw_svector_ostream Message(MessageStorage); \
  24     Message << #x ": did not return errc::success.\n" \
  25             << "error number: " << ASSERT_NO_ERROR_ec.value() << "\n" \
  26             << "error message: " << ASSERT_NO_ERROR_ec.message() << "\n"; \
  27     GTEST_FATAL_FAILURE_(MessageStorage.c_str()); \
  28   } else {}
  29
  30 namespace {
  31
  32 TEST(is_separator, Works) {
  33   EXPECT_TRUE(path::is_separator('/'));
  34   EXPECT_FALSE(path::is_separator('\0'));
  35   EXPECT_FALSE(path::is_separator('-'));
  36   EXPECT_FALSE(path::is_separator(' '));
  37
  38 #ifdef LLVM_ON_WIN32
  39   EXPECT_TRUE(path::is_separator('\\'));
  40 #else
  41   EXPECT_FALSE(path::is_separator('\\'));
  42 #endif
  43 }
  44
  45 TEST(Support, Path) {
  46   SmallVector<StringRef, 40> paths;
  47   paths.push_back("");
  48   paths.push_back(".");
  49   paths.push_back("..");
  50   paths.push_back("foo");
  51   paths.push_back("/");
  52   paths.push_back("/foo");
  53   paths.push_back("foo/");
  54   paths.push_back("/foo/");
  55   paths.push_back("foo/bar");
  56   paths.push_back("/foo/bar");
  57   paths.push_back("//net");
  58   paths.push_back("//net/foo");
  59   paths.push_back("///foo///");
  60   paths.push_back("///foo///bar");
  61   paths.push_back("/.");
  62   paths.push_back("./");
  63   paths.push_back("/..");
  64   paths.push_back("../");
  65   paths.push_back("foo/.");
  66   paths.push_back("foo/..");
  67   paths.push_back("foo/./");
  68   paths.push_back("foo/./bar");
  69   paths.push_back("foo/..");
  70   paths.push_back("foo/../");
  71   paths.push_back("foo/../bar");
  72   paths.push_back("c:");
  73   paths.push_back("c:/");
  74   paths.push_back("c:foo");
  75   paths.push_back("c:/foo");
  76   paths.push_back("c:foo/");
  77   paths.push_back("c:/foo/");
  78   paths.push_back("c:/foo/bar");
  79   paths.push_back("prn:");
  80   paths.push_back("c:\\");
  81   paths.push_back("c:foo");
  82   paths.push_back("c:\\foo");
  83   paths.push_back("c:foo\\");
  84   paths.push_back("c:\\foo\\");
  85   paths.push_back("c:\\foo/");
  86   paths.push_back("c:/foo\\bar");
  87
  88   for (SmallVector<StringRef, 40>::const_iterator i = paths.begin(),
  89                                                   e = paths.end();
  90                                                   i != e;
  91                                                   ++i) {
  92     for (sys::path::const_iterator ci = sys::path::begin(*i),
  93                                    ce = sys::path::end(*i);
  94                                    ci != ce;
  95                                    ++ci) {
  96       ASSERT_FALSE(ci->empty());
  97     }
  98
  99 #if 0 // Valgrind is whining about this.
 100     outs() << "    Reverse Iteration: [";
 101     for (sys::path::reverse_iterator ci = sys::path::rbegin(*i),
 102                                      ce = sys::path::rend(*i);
 103                                      ci != ce;
 104                                      ++ci) {
 105       outs() << *ci << ',';
 106     }
 107     outs() << "]\n";
 108 #endif
 109
 110     path::has_root_path(*i);
 111     path::root_path(*i);
 112     path::has_root_name(*i);
 113     path::root_name(*i);
 114     path::has_root_directory(*i);
 115     path::root_directory(*i);
 116     path::has_parent_path(*i);
 117     path::parent_path(*i);
 118     path::has_filename(*i);
 119     path::filename(*i);
 120     path::has_stem(*i);
 121     path::stem(*i);
 122     path::has_extension(*i);
 123     path::extension(*i);
 124     path::is_absolute(*i);
 125     path::is_relative(*i);
 126
 127     SmallString<128> temp_store;
 128     temp_store = *i;
 129     ASSERT_NO_ERROR(fs::make_absolute(temp_store));
 130     temp_store = *i;
 131     path::remove_filename(temp_store);
 132
 133     temp_store = *i;
 134     path::replace_extension(temp_store, "ext");
 135     StringRef filename(temp_store.begin(), temp_store.size()), stem, ext;
 136     stem = path::stem(filename);
 137     ext  = path::extension(filename);
 138     EXPECT_EQ(*(--sys::path::end(filename)), (stem + ext).str());
 139
 140     path::native(*i, temp_store);
 141   }
 142 }
 143
 144 TEST(Support, RelativePathIterator) {
 145   SmallString<64> Path(StringRef("c/d/e/foo.txt"));
 146   typedef SmallVector<StringRef, 4> PathComponents;
 147   PathComponents ExpectedPathComponents;
 148   PathComponents ActualPathComponents;
 149
 150   StringRef(Path).split(ExpectedPathComponents, "/");
 151
 152   for (path::const_iterator I = path::begin(Path), E = path::end(Path); I != E;
 153        ++I) {
 154     ActualPathComponents.push_back(*I);
 155   }
 156
 157   ASSERT_EQ(ExpectedPathComponents.size(), ActualPathComponents.size());
 158
 159   for (size_t i = 0; i <ExpectedPathComponents.size(); ++i) {
 160     EXPECT_EQ(ExpectedPathComponents[i].str(), ActualPathComponents[i].str());
 161   }
 162 }
 163
 164 TEST(Support, AbsolutePathIterator) {
 165   SmallString<64> Path(StringRef("/c/d/e/foo.txt"));
 166   typedef SmallVector<StringRef, 4> PathComponents;
 167   PathComponents ExpectedPathComponents;
 168   PathComponents ActualPathComponents;
 169
 170   StringRef(Path).split(ExpectedPathComponents, "/");
 171
 172   // The root path will also be a component when iterating
 173   ExpectedPathComponents[0] = "/";
 174
 175   for (path::const_iterator I = path::begin(Path), E = path::end(Path); I != E;
 176        ++I) {
 177     ActualPathComponents.push_back(*I);
 178   }
 179
 180   ASSERT_EQ(ExpectedPathComponents.size(), ActualPathComponents.size());
 181
 182   for (size_t i = 0; i <ExpectedPathComponents.size(); ++i) {
 183     EXPECT_EQ(ExpectedPathComponents[i].str(), ActualPathComponents[i].str());
 184   }
 185 }
 186
 187 #ifdef LLVM_ON_WIN32
 188 TEST(Support, AbsolutePathIteratorWin32) {
 189   SmallString<64> Path(StringRef("c:\\c\\e\\foo.txt"));
 190   typedef SmallVector<StringRef, 4> PathComponents;
 191   PathComponents ExpectedPathComponents;
 192   PathComponents ActualPathComponents;
 193
 194   StringRef(Path).split(ExpectedPathComponents, "\\");
 195
 196   // The root path (which comes after the drive name) will also be a component
 197   // when iterating.
 198   ExpectedPathComponents.insert(ExpectedPathComponents.begin()+1, "\\");
 199
 200   for (path::const_iterator I = path::begin(Path), E = path::end(Path); I != E;
 201        ++I) {
 202     ActualPathComponents.push_back(*I);
 203   }
 204
 205   ASSERT_EQ(ExpectedPathComponents.size(), ActualPathComponents.size());
 206
 207   for (size_t i = 0; i <ExpectedPathComponents.size(); ++i) {
 208     EXPECT_EQ(ExpectedPathComponents[i].str(), ActualPathComponents[i].str());
 209   }
 210 }
 211 #endif // LLVM_ON_WIN32
 212
 213 TEST(Support, AbsolutePathIteratorEnd) {
 214   // Trailing slashes are converted to '.' unless they are part of the root path.
 215   SmallVector<StringRef, 4> Paths;
 216   Paths.push_back("/foo/");
 217   Paths.push_back("/foo//");
 218   Paths.push_back("//net//");
 219 #ifdef LLVM_ON_WIN32
 220   Paths.push_back("c:\\\\");
 221 #endif
 222
 223   for (StringRef Path : Paths) {
 224     StringRef LastComponent = *--path::end(Path);
 225     EXPECT_EQ(".", LastComponent);
 226   }
 227
 228   SmallVector<StringRef, 3> RootPaths;
 229   RootPaths.push_back("/");
 230   RootPaths.push_back("//net/");
 231 #ifdef LLVM_ON_WIN32
 232   RootPaths.push_back("c:\\");
 233 #endif
 234
 235   for (StringRef Path : RootPaths) {
 236     StringRef LastComponent = *--path::end(Path);
 237     EXPECT_EQ(1u, LastComponent.size());
 238     EXPECT_TRUE(path::is_separator(LastComponent[0]));
 239   }
 240 }
 241
 242 TEST(Support, HomeDirectory) {
 243 #ifdef LLVM_ON_UNIX
 244   // This test only makes sense on Unix if $HOME is set.
 245   if (::getenv("HOME")) {
 246 #endif
 247     SmallString<128> HomeDir;
 248     EXPECT_TRUE(path::home_directory(HomeDir));
 249     EXPECT_FALSE(HomeDir.empty());
 250 #ifdef LLVM_ON_UNIX
 251   }
 252 #endif
 253 }
 254
 255 class FileSystemTest : public testing::Test {
 256 protected:
 257   /// Unique temporary directory in which all created filesystem entities must
 258   /// be placed. It is recursively removed at the end of each test.
 259   SmallString<128> TestDirectory;
 260
 261   virtual void SetUp() {
 262     ASSERT_NO_ERROR(
 263         fs::createUniqueDirectory("file-system-test", TestDirectory));
 264     // We don't care about this specific file.
 265     errs() << "Test Directory: " << TestDirectory << '\n';
 266     errs().flush();
 267   }
 268
 269   virtual void TearDown() {
 270     ASSERT_NO_ERROR(fs::remove(TestDirectory.str()));
 271   }
 272 };
 273
 274 TEST_F(FileSystemTest, Unique) {
 275   // Create a temp file.
 276   int FileDescriptor;
 277   SmallString<64> TempPath;
 278   ASSERT_NO_ERROR(
 279       fs::createTemporaryFile("prefix", "temp", FileDescriptor, TempPath));
 280
 281   // The same file should return an identical unique id.
 282   fs::UniqueID F1, F2;
 283   ASSERT_NO_ERROR(fs::getUniqueID(Twine(TempPath), F1));
 284   ASSERT_NO_ERROR(fs::getUniqueID(Twine(TempPath), F2));
 285   ASSERT_EQ(F1, F2);
 286
 287   // Different files should return different unique ids.
 288   int FileDescriptor2;
 289   SmallString<64> TempPath2;
 290   ASSERT_NO_ERROR(
 291       fs::createTemporaryFile("prefix", "temp", FileDescriptor2, TempPath2));
 292
 293   fs::UniqueID D;
 294   ASSERT_NO_ERROR(fs::getUniqueID(Twine(TempPath2), D));
 295   ASSERT_NE(D, F1);
 296   ::close(FileDescriptor2);
 297
 298   ASSERT_NO_ERROR(fs::remove(Twine(TempPath2)));
 299
 300   // Two paths representing the same file on disk should still provide the
 301   // same unique id.  We can test this by making a hard link.
 302   ASSERT_NO_ERROR(fs::create_link(Twine(TempPath), Twine(TempPath2)));
 303   fs::UniqueID D2;
 304   ASSERT_NO_ERROR(fs::getUniqueID(Twine(TempPath2), D2));
 305   ASSERT_EQ(D2, F1);
 306
 307   ::close(FileDescriptor);
 308
 309   SmallString<128> Dir1;
 310   ASSERT_NO_ERROR(
 311      fs::createUniqueDirectory("dir1", Dir1));
 312   ASSERT_NO_ERROR(fs::getUniqueID(Dir1.c_str(), F1));
 313   ASSERT_NO_ERROR(fs::getUniqueID(Dir1.c_str(), F2));
 314   ASSERT_EQ(F1, F2);
 315
 316   SmallString<128> Dir2;
 317   ASSERT_NO_ERROR(
 318      fs::createUniqueDirectory("dir2", Dir2));
 319   ASSERT_NO_ERROR(fs::getUniqueID(Dir2.c_str(), F2));
 320   ASSERT_NE(F1, F2);
 321 }
 322
 323 TEST_F(FileSystemTest, TempFiles) {
 324   // Create a temp file.
 325   int FileDescriptor;
 326   SmallString<64> TempPath;
 327   ASSERT_NO_ERROR(
 328       fs::createTemporaryFile("prefix", "temp", FileDescriptor, TempPath));
 329
 330   // Make sure it exists.
 331   bool TempFileExists;
 332   ASSERT_NO_ERROR(sys::fs::exists(Twine(TempPath), TempFileExists));
 333   EXPECT_TRUE(TempFileExists);
 334
 335   // Create another temp tile.
 336   int FD2;
 337   SmallString<64> TempPath2;
 338   ASSERT_NO_ERROR(fs::createTemporaryFile("prefix", "temp", FD2, TempPath2));
 339   ASSERT_TRUE(TempPath2.endswith(".temp"));
 340   ASSERT_NE(TempPath.str(), TempPath2.str());
 341
 342   fs::file_status A, B;
 343   ASSERT_NO_ERROR(fs::status(Twine(TempPath), A));
 344   ASSERT_NO_ERROR(fs::status(Twine(TempPath2), B));
 345   EXPECT_FALSE(fs::equivalent(A, B));
 346
 347   ::close(FD2);
 348
 349   // Remove Temp2.
 350   ASSERT_NO_ERROR(fs::remove(Twine(TempPath2)));
 351   ASSERT_NO_ERROR(fs::remove(Twine(TempPath2)));
 352   ASSERT_EQ(fs::remove(Twine(TempPath2), false),
 353             errc::no_such_file_or_directory);
 354
 355   error_code EC = fs::status(TempPath2.c_str(), B);
 356   EXPECT_EQ(EC, errc::no_such_file_or_directory);
 357   EXPECT_EQ(B.type(), fs::file_type::file_not_found);
 358
 359   // Make sure Temp2 doesn't exist.
 360   ASSERT_NO_ERROR(fs::exists(Twine(TempPath2), TempFileExists));
 361   EXPECT_FALSE(TempFileExists);
 362
 363   SmallString<64> TempPath3;
 364   ASSERT_NO_ERROR(fs::createTemporaryFile("prefix", "", TempPath3));
 365   ASSERT_FALSE(TempPath3.endswith("."));
 366
 367   // Create a hard link to Temp1.
 368   ASSERT_NO_ERROR(fs::create_link(Twine(TempPath), Twine(TempPath2)));
 369   bool equal;
 370   ASSERT_NO_ERROR(fs::equivalent(Twine(TempPath), Twine(TempPath2), equal));
 371   EXPECT_TRUE(equal);
 372   ASSERT_NO_ERROR(fs::status(Twine(TempPath), A));
 373   ASSERT_NO_ERROR(fs::status(Twine(TempPath2), B));
 374   EXPECT_TRUE(fs::equivalent(A, B));
 375
 376   // Remove Temp1.
 377   ::close(FileDescriptor);
 378   ASSERT_NO_ERROR(fs::remove(Twine(TempPath)));
 379
 380   // Remove the hard link.
 381   ASSERT_NO_ERROR(fs::remove(Twine(TempPath2)));
 382
 383   // Make sure Temp1 doesn't exist.
 384   ASSERT_NO_ERROR(fs::exists(Twine(TempPath), TempFileExists));
 385   EXPECT_FALSE(TempFileExists);
 386
 387 #ifdef LLVM_ON_WIN32
 388   // Path name > 260 chars should get an error.
 389   const char *Path270 =
 390     "abcdefghijklmnopqrstuvwxyz9abcdefghijklmnopqrstuvwxyz8"
 391     "abcdefghijklmnopqrstuvwxyz7abcdefghijklmnopqrstuvwxyz6"
 392     "abcdefghijklmnopqrstuvwxyz5abcdefghijklmnopqrstuvwxyz4"
 393     "abcdefghijklmnopqrstuvwxyz3abcdefghijklmnopqrstuvwxyz2"
 394     "abcdefghijklmnopqrstuvwxyz1abcdefghijklmnopqrstuvwxyz0";
 395   EXPECT_EQ(fs::createUniqueFile(Twine(Path270), FileDescriptor, TempPath),
 396             windows_error::path_not_found);
 397 #endif
 398 }
 399
 400 TEST_F(FileSystemTest, CreateDir) {
 401   ASSERT_NO_ERROR(fs::create_directory(Twine(TestDirectory) + "foo"));
 402   ASSERT_NO_ERROR(fs::create_directory(Twine(TestDirectory) + "foo"));
 403   ASSERT_EQ(fs::create_directory(Twine(TestDirectory) + "foo", false),
 404             errc::file_exists);
 405   ASSERT_NO_ERROR(fs::remove(Twine(TestDirectory) + "foo"));
 406 }
 407
 408 TEST_F(FileSystemTest, DirectoryIteration) {
 409   error_code ec;
 410   for (fs::directory_iterator i(".", ec), e; i != e; i.increment(ec))
 411     ASSERT_NO_ERROR(ec);
 412
 413   // Create a known hierarchy to recurse over.
 414   ASSERT_NO_ERROR(
 415       fs::create_directories(Twine(TestDirectory) + "/recursive/a0/aa1"));
 416   ASSERT_NO_ERROR(
 417       fs::create_directories(Twine(TestDirectory) + "/recursive/a0/ab1"));
 418   ASSERT_NO_ERROR(fs::create_directories(Twine(TestDirectory) +
 419                                          "/recursive/dontlookhere/da1"));
 420   ASSERT_NO_ERROR(
 421       fs::create_directories(Twine(TestDirectory) + "/recursive/z0/za1"));
 422   ASSERT_NO_ERROR(
 423       fs::create_directories(Twine(TestDirectory) + "/recursive/pop/p1"));
 424   typedef std::vector<std::string> v_t;
 425   v_t visited;
 426   for (fs::recursive_directory_iterator i(Twine(TestDirectory)
 427          + "/recursive", ec), e; i != e; i.increment(ec)){
 428     ASSERT_NO_ERROR(ec);
 429     if (path::filename(i->path()) == "p1") {
 430       i.pop();
 431       // FIXME: recursive_directory_iterator should be more robust.
 432       if (i == e) break;
 433     }
 434     if (path::filename(i->path()) == "dontlookhere")
 435       i.no_push();
 436     visited.push_back(path::filename(i->path()));
 437   }
 438   v_t::const_iterator a0 = std::find(visited.begin(), visited.end(), "a0");
 439   v_t::const_iterator aa1 = std::find(visited.begin(), visited.end(), "aa1");
 440   v_t::const_iterator ab1 = std::find(visited.begin(), visited.end(), "ab1");
 441   v_t::const_iterator dontlookhere = std::find(visited.begin(), visited.end(),
 442                                                "dontlookhere");
 443   v_t::const_iterator da1 = std::find(visited.begin(), visited.end(), "da1");
 444   v_t::const_iterator z0 = std::find(visited.begin(), visited.end(), "z0");
 445   v_t::const_iterator za1 = std::find(visited.begin(), visited.end(), "za1");
 446   v_t::const_iterator pop = std::find(visited.begin(), visited.end(), "pop");
 447   v_t::const_iterator p1 = std::find(visited.begin(), visited.end(), "p1");
 448
 449   // Make sure that each path was visited correctly.
 450   ASSERT_NE(a0, visited.end());
 451   ASSERT_NE(aa1, visited.end());
 452   ASSERT_NE(ab1, visited.end());
 453   ASSERT_NE(dontlookhere, visited.end());
 454   ASSERT_EQ(da1, visited.end()); // Not visited.
 455   ASSERT_NE(z0, visited.end());
 456   ASSERT_NE(za1, visited.end());
 457   ASSERT_NE(pop, visited.end());
 458   ASSERT_EQ(p1, visited.end()); // Not visited.
 459
 460   // Make sure that parents were visited before children. No other ordering
 461   // guarantees can be made across siblings.
 462   ASSERT_LT(a0, aa1);
 463   ASSERT_LT(a0, ab1);
 464   ASSERT_LT(z0, za1);
 465
 466   ASSERT_NO_ERROR(fs::remove(Twine(TestDirectory) + "/recursive/a0/aa1"));
 467   ASSERT_NO_ERROR(fs::remove(Twine(TestDirectory) + "/recursive/a0/ab1"));
 468   ASSERT_NO_ERROR(fs::remove(Twine(TestDirectory) + "/recursive/a0"));
 469   ASSERT_NO_ERROR(
 470       fs::remove(Twine(TestDirectory) + "/recursive/dontlookhere/da1"));
 471   ASSERT_NO_ERROR(fs::remove(Twine(TestDirectory) + "/recursive/dontlookhere"));
 472   ASSERT_NO_ERROR(fs::remove(Twine(TestDirectory) + "/recursive/pop/p1"));
 473   ASSERT_NO_ERROR(fs::remove(Twine(TestDirectory) + "/recursive/pop"));
 474   ASSERT_NO_ERROR(fs::remove(Twine(TestDirectory) + "/recursive/z0/za1"));
 475   ASSERT_NO_ERROR(fs::remove(Twine(TestDirectory) + "/recursive/z0"));
 476   ASSERT_NO_ERROR(fs::remove(Twine(TestDirectory) + "/recursive"));
 477 }
 478
 479 const char archive[] = "!<arch>\x0A";
 480 const char bitcode[] = "\xde\xc0\x17\x0b";
 481 const char coff_object[] = "\x00\x00......";
 482 const char coff_import_library[] = "\x00\x00\xff\xff....";
 483 const char elf_relocatable[] = { 0x7f, 'E', 'L', 'F', 1, 2, 1, 0, 0,
 484                                  0,    0,   0,   0,   0, 0, 0, 0, 1 };
 485 const char macho_universal_binary[] = "\xca\xfe\xba\xbe...\0x00";
 486 const char macho_object[] = "\xfe\xed\xfa\xce..........\x00\x01";
 487 const char macho_executable[] = "\xfe\xed\xfa\xce..........\x00\x02";
 488 const char macho_fixed_virtual_memory_shared_lib[] =
 489     "\xfe\xed\xfa\xce..........\x00\x03";
 490 const char macho_core[] = "\xfe\xed\xfa\xce..........\x00\x04";
 491 const char macho_preload_executable[] = "\xfe\xed\xfa\xce..........\x00\x05";
 492 const char macho_dynamically_linked_shared_lib[] =
 493     "\xfe\xed\xfa\xce..........\x00\x06";
 494 const char macho_dynamic_linker[] = "\xfe\xed\xfa\xce..........\x00\x07";
 495 const char macho_bundle[] = "\xfe\xed\xfa\xce..........\x00\x08";
 496 const char macho_dsym_companion[] = "\xfe\xed\xfa\xce..........\x00\x0a";
 497 const char windows_resource[] = "\x00\x00\x00\x00\x020\x00\x00\x00\xff";
 498
 499 TEST_F(FileSystemTest, Magic) {
 500   struct type {
 501     const char *filename;
 502     const char *magic_str;
 503     size_t magic_str_len;
 504     fs::file_magic magic;
 505   } types[] = {
 506 #define DEFINE(magic)                                           \
 507     { #magic, magic, sizeof(magic), fs::file_magic::magic }
 508     DEFINE(archive),
 509     DEFINE(bitcode),
 510     DEFINE(coff_object),
 511     DEFINE(coff_import_library),
 512     DEFINE(elf_relocatable),
 513     DEFINE(macho_universal_binary),
 514     DEFINE(macho_object),
 515     DEFINE(macho_executable),
 516     DEFINE(macho_fixed_virtual_memory_shared_lib),
 517     DEFINE(macho_core),
 518     DEFINE(macho_preload_executable),
 519     DEFINE(macho_dynamically_linked_shared_lib),
 520     DEFINE(macho_dynamic_linker),
 521     DEFINE(macho_bundle),
 522     DEFINE(macho_dsym_companion),
 523     DEFINE(windows_resource)
 524 #undef DEFINE
 525     };
 526
 527   // Create some files filled with magic.
 528   for (type *i = types, *e = types + (sizeof(types) / sizeof(type)); i != e;
 529                                                                      ++i) {
 530     SmallString<128> file_pathname(TestDirectory);
 531     path::append(file_pathname, i->filename);
 532     std::string ErrMsg;
 533     raw_fd_ostream file(file_pathname.c_str(), ErrMsg, sys::fs::F_None);
 534     ASSERT_FALSE(file.has_error());
 535     StringRef magic(i->magic_str, i->magic_str_len);
 536     file << magic;
 537     file.close();
 538     bool res = false;
 539     ASSERT_NO_ERROR(fs::has_magic(file_pathname.c_str(), magic, res));
 540     EXPECT_TRUE(res);
 541     EXPECT_EQ(i->magic, fs::identify_magic(magic));
 542     ASSERT_NO_ERROR(fs::remove(Twine(file_pathname)));
 543   }
 544 }
 545
 546 #ifdef LLVM_ON_WIN32
 547 TEST_F(FileSystemTest, CarriageReturn) {
 548   SmallString<128> FilePathname(TestDirectory);
 549   std::string ErrMsg;
 550   path::append(FilePathname, "test");
 551
 552   {
 553     raw_fd_ostream File(FilePathname.c_str(), ErrMsg, sys::fs::F_Text);
 554     EXPECT_EQ(ErrMsg, "");
 555     File << '\n';
 556   }
 557   {
 558     std::unique_ptr<MemoryBuffer> Buf;
 559     MemoryBuffer::getFile(FilePathname.c_str(), Buf);
 560     EXPECT_EQ(Buf->getBuffer(), "\r\n");
 561   }
 562
 563   {
 564     raw_fd_ostream File(FilePathname.c_str(), ErrMsg, sys::fs::F_None);
 565     EXPECT_EQ(ErrMsg, "");
 566     File << '\n';
 567   }
 568   {
 569     std::unique_ptr<MemoryBuffer> Buf;
 570     MemoryBuffer::getFile(FilePathname.c_str(), Buf);
 571     EXPECT_EQ(Buf->getBuffer(), "\n");
 572   }
 573   ASSERT_NO_ERROR(fs::remove(Twine(FilePathname)));
 574 }
 575 #endif
 576
 577 TEST_F(FileSystemTest, FileMapping) {
 578   // Create a temp file.
 579   int FileDescriptor;
 580   SmallString<64> TempPath;
 581   ASSERT_NO_ERROR(
 582       fs::createTemporaryFile("prefix", "temp", FileDescriptor, TempPath));
 583   // Map in temp file and add some content
 584   error_code EC;
 585   StringRef Val("hello there");
 586   {
 587     fs::mapped_file_region mfr(FileDescriptor,
 588                                true,
 589                                fs::mapped_file_region::readwrite,
 590                                4096,
 591                                0,
 592                                EC);
 593     ASSERT_NO_ERROR(EC);
 594     std::copy(Val.begin(), Val.end(), mfr.data());
 595     // Explicitly add a 0.
 596     mfr.data()[Val.size()] = 0;
 597     // Unmap temp file
 598   }
 599
 600   // Map it back in read-only
 601   fs::mapped_file_region mfr(Twine(TempPath),
 602                              fs::mapped_file_region::readonly,
 603                              0,
 604                              0,
 605                              EC);
 606   ASSERT_NO_ERROR(EC);
 607
 608   // Verify content
 609   EXPECT_EQ(StringRef(mfr.const_data()), Val);
 610
 611   // Unmap temp file
 612
 613   fs::mapped_file_region m(Twine(TempPath),
 614                              fs::mapped_file_region::readonly,
 615                              0,
 616                              0,
 617                              EC);
 618   ASSERT_NO_ERROR(EC);
 619   const char *Data = m.const_data();
 620   fs::mapped_file_region mfrrv(std::move(m));
 621   EXPECT_EQ(mfrrv.const_data(), Data);
 622 }
 623 } // anonymous namespace