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/Errc.h"
  12 #include "llvm/Support/ErrorHandling.h"
  13 #include "llvm/Support/FileSystem.h"
  14 #include "llvm/Support/MemoryBuffer.h"
  15 #include "llvm/Support/raw_ostream.h"
  16 #include "gtest/gtest.h"
  17
  18 #ifdef LLVM_ON_WIN32
  19 #include <winerror.h>
  20 #endif
  21
  22 using namespace llvm;
  23 using namespace llvm::sys;
  24
  25 #define ASSERT_NO_ERROR(x)                                                     \
  26   if (std::error_code ASSERT_NO_ERROR_ec = x) {                                \
  27     SmallString<128> MessageStorage;                                           \
  28     raw_svector_ostream Message(MessageStorage);                               \
  29     Message << #x ": did not return errc::success.\n"                          \
  30             << "error number: " << ASSERT_NO_ERROR_ec.value() << "\n"          \
  31             << "error message: " << ASSERT_NO_ERROR_ec.message() << "\n";      \
  32     GTEST_FATAL_FAILURE_(MessageStorage.c_str());                              \
  33   } else {                                                                     \
  34   }
  35
  36 namespace {
  37
  38 TEST(is_separator, Works) {
  39   EXPECT_TRUE(path::is_separator('/'));
  40   EXPECT_FALSE(path::is_separator('\0'));
  41   EXPECT_FALSE(path::is_separator('-'));
  42   EXPECT_FALSE(path::is_separator(' '));
  43
  44 #ifdef LLVM_ON_WIN32
  45   EXPECT_TRUE(path::is_separator('\\'));
  46 #else
  47   EXPECT_FALSE(path::is_separator('\\'));
  48 #endif
  49 }
  50
  51 TEST(Support, Path) {
  52   SmallVector<StringRef, 40> paths;
  53   paths.push_back("");
  54   paths.push_back(".");
  55   paths.push_back("..");
  56   paths.push_back("foo");
  57   paths.push_back("/");
  58   paths.push_back("/foo");
  59   paths.push_back("foo/");
  60   paths.push_back("/foo/");
  61   paths.push_back("foo/bar");
  62   paths.push_back("/foo/bar");
  63   paths.push_back("//net");
  64   paths.push_back("//net/foo");
  65   paths.push_back("///foo///");
  66   paths.push_back("///foo///bar");
  67   paths.push_back("/.");
  68   paths.push_back("./");
  69   paths.push_back("/..");
  70   paths.push_back("../");
  71   paths.push_back("foo/.");
  72   paths.push_back("foo/..");
  73   paths.push_back("foo/./");
  74   paths.push_back("foo/./bar");
  75   paths.push_back("foo/..");
  76   paths.push_back("foo/../");
  77   paths.push_back("foo/../bar");
  78   paths.push_back("c:");
  79   paths.push_back("c:/");
  80   paths.push_back("c:foo");
  81   paths.push_back("c:/foo");
  82   paths.push_back("c:foo/");
  83   paths.push_back("c:/foo/");
  84   paths.push_back("c:/foo/bar");
  85   paths.push_back("prn:");
  86   paths.push_back("c:\\");
  87   paths.push_back("c:foo");
  88   paths.push_back("c:\\foo");
  89   paths.push_back("c:foo\\");
  90   paths.push_back("c:\\foo\\");
  91   paths.push_back("c:\\foo/");
  92   paths.push_back("c:/foo\\bar");
  93
  94   SmallVector<StringRef, 5> ComponentStack;
  95   for (SmallVector<StringRef, 40>::const_iterator i = paths.begin(),
  96                                                   e = paths.end();
  97                                                   i != e;
  98                                                   ++i) {
  99     for (sys::path::const_iterator ci = sys::path::begin(*i),
 100                                    ce = sys::path::end(*i);
 101                                    ci != ce;
 102                                    ++ci) {
 103       ASSERT_FALSE(ci->empty());
 104       ComponentStack.push_back(*ci);
 105     }
 106
 107     for (sys::path::reverse_iterator ci = sys::path::rbegin(*i),
 108                                      ce = sys::path::rend(*i);
 109                                      ci != ce;
 110                                      ++ci) {
 111       ASSERT_TRUE(*ci == ComponentStack.back());
 112       ComponentStack.pop_back();
 113     }
 114     ASSERT_TRUE(ComponentStack.empty());
 115
 116     path::has_root_path(*i);
 117     path::root_path(*i);
 118     path::has_root_name(*i);
 119     path::root_name(*i);
 120     path::has_root_directory(*i);
 121     path::root_directory(*i);
 122     path::has_parent_path(*i);
 123     path::parent_path(*i);
 124     path::has_filename(*i);
 125     path::filename(*i);
 126     path::has_stem(*i);
 127     path::stem(*i);
 128     path::has_extension(*i);
 129     path::extension(*i);
 130     path::is_absolute(*i);
 131     path::is_relative(*i);
 132
 133     SmallString<128> temp_store;
 134     temp_store = *i;
 135     ASSERT_NO_ERROR(fs::make_absolute(temp_store));
 136     temp_store = *i;
 137     path::remove_filename(temp_store);
 138
 139     temp_store = *i;
 140     path::replace_extension(temp_store, "ext");
 141     StringRef filename(temp_store.begin(), temp_store.size()), stem, ext;
 142     stem = path::stem(filename);
 143     ext  = path::extension(filename);
 144     EXPECT_EQ(*sys::path::rbegin(filename), (stem + ext).str());
 145
 146     path::native(*i, temp_store);
 147   }
 148 }
 149
 150 TEST(Support, RelativePathIterator) {
 151   SmallString<64> Path(StringRef("c/d/e/foo.txt"));
 152   typedef SmallVector<StringRef, 4> PathComponents;
 153   PathComponents ExpectedPathComponents;
 154   PathComponents ActualPathComponents;
 155
 156   StringRef(Path).split(ExpectedPathComponents, "/");
 157
 158   for (path::const_iterator I = path::begin(Path), E = path::end(Path); I != E;
 159        ++I) {
 160     ActualPathComponents.push_back(*I);
 161   }
 162
 163   ASSERT_EQ(ExpectedPathComponents.size(), ActualPathComponents.size());
 164
 165   for (size_t i = 0; i <ExpectedPathComponents.size(); ++i) {
 166     EXPECT_EQ(ExpectedPathComponents[i].str(), ActualPathComponents[i].str());
 167   }
 168 }
 169
 170 TEST(Support, AbsolutePathIterator) {
 171   SmallString<64> Path(StringRef("/c/d/e/foo.txt"));
 172   typedef SmallVector<StringRef, 4> PathComponents;
 173   PathComponents ExpectedPathComponents;
 174   PathComponents ActualPathComponents;
 175
 176   StringRef(Path).split(ExpectedPathComponents, "/");
 177
 178   // The root path will also be a component when iterating
 179   ExpectedPathComponents[0] = "/";
 180
 181   for (path::const_iterator I = path::begin(Path), E = path::end(Path); I != E;
 182        ++I) {
 183     ActualPathComponents.push_back(*I);
 184   }
 185
 186   ASSERT_EQ(ExpectedPathComponents.size(), ActualPathComponents.size());
 187
 188   for (size_t i = 0; i <ExpectedPathComponents.size(); ++i) {
 189     EXPECT_EQ(ExpectedPathComponents[i].str(), ActualPathComponents[i].str());
 190   }
 191 }
 192
 193 #ifdef LLVM_ON_WIN32
 194 TEST(Support, AbsolutePathIteratorWin32) {
 195   SmallString<64> Path(StringRef("c:\\c\\e\\foo.txt"));
 196   typedef SmallVector<StringRef, 4> PathComponents;
 197   PathComponents ExpectedPathComponents;
 198   PathComponents ActualPathComponents;
 199
 200   StringRef(Path).split(ExpectedPathComponents, "\\");
 201
 202   // The root path (which comes after the drive name) will also be a component
 203   // when iterating.
 204   ExpectedPathComponents.insert(ExpectedPathComponents.begin()+1, "\\");
 205
 206   for (path::const_iterator I = path::begin(Path), E = path::end(Path); I != E;
 207        ++I) {
 208     ActualPathComponents.push_back(*I);
 209   }
 210
 211   ASSERT_EQ(ExpectedPathComponents.size(), ActualPathComponents.size());
 212
 213   for (size_t i = 0; i <ExpectedPathComponents.size(); ++i) {
 214     EXPECT_EQ(ExpectedPathComponents[i].str(), ActualPathComponents[i].str());
 215   }
 216 }
 217 #endif // LLVM_ON_WIN32
 218
 219 TEST(Support, AbsolutePathIteratorEnd) {
 220   // Trailing slashes are converted to '.' unless they are part of the root path.
 221   SmallVector<StringRef, 4> Paths;
 222   Paths.push_back("/foo/");
 223   Paths.push_back("/foo//");
 224   Paths.push_back("//net//");
 225 #ifdef LLVM_ON_WIN32
 226   Paths.push_back("c:\\\\");
 227 #endif
 228
 229   for (StringRef Path : Paths) {
 230     StringRef LastComponent = *path::rbegin(Path);
 231     EXPECT_EQ(".", LastComponent);
 232   }
 233
 234   SmallVector<StringRef, 3> RootPaths;
 235   RootPaths.push_back("/");
 236   RootPaths.push_back("//net/");
 237 #ifdef LLVM_ON_WIN32
 238   RootPaths.push_back("c:\\");
 239 #endif
 240
 241   for (StringRef Path : RootPaths) {
 242     StringRef LastComponent = *path::rbegin(Path);
 243     EXPECT_EQ(1u, LastComponent.size());
 244     EXPECT_TRUE(path::is_separator(LastComponent[0]));
 245   }
 246 }
 247
 248 TEST(Support, HomeDirectory) {
 249 #ifdef LLVM_ON_UNIX
 250   // This test only makes sense on Unix if $HOME is set.
 251   if (::getenv("HOME")) {
 252 #endif
 253     SmallString<128> HomeDir;
 254     EXPECT_TRUE(path::home_directory(HomeDir));
 255     EXPECT_FALSE(HomeDir.empty());
 256 #ifdef LLVM_ON_UNIX
 257   }
 258 #endif
 259 }
 260
 261 class FileSystemTest : public testing::Test {
 262 protected:
 263   /// Unique temporary directory in which all created filesystem entities must
 264   /// be placed. It is recursively removed at the end of each test.
 265   SmallString<128> TestDirectory;
 266
 267   virtual void SetUp() {
 268     ASSERT_NO_ERROR(
 269         fs::createUniqueDirectory("file-system-test", TestDirectory));
 270     // We don't care about this specific file.
 271     errs() << "Test Directory: " << TestDirectory << '\n';
 272     errs().flush();
 273   }
 274
 275   virtual void TearDown() {
 276     ASSERT_NO_ERROR(fs::remove(TestDirectory.str()));
 277   }
 278 };
 279
 280 TEST_F(FileSystemTest, Unique) {
 281   // Create a temp file.
 282   int FileDescriptor;
 283   SmallString<64> TempPath;
 284   ASSERT_NO_ERROR(
 285       fs::createTemporaryFile("prefix", "temp", FileDescriptor, TempPath));
 286
 287   // The same file should return an identical unique id.
 288   fs::UniqueID F1, F2;
 289   ASSERT_NO_ERROR(fs::getUniqueID(Twine(TempPath), F1));
 290   ASSERT_NO_ERROR(fs::getUniqueID(Twine(TempPath), F2));
 291   ASSERT_EQ(F1, F2);
 292
 293   // Different files should return different unique ids.
 294   int FileDescriptor2;
 295   SmallString<64> TempPath2;
 296   ASSERT_NO_ERROR(
 297       fs::createTemporaryFile("prefix", "temp", FileDescriptor2, TempPath2));
 298
 299   fs::UniqueID D;
 300   ASSERT_NO_ERROR(fs::getUniqueID(Twine(TempPath2), D));
 301   ASSERT_NE(D, F1);
 302   ::close(FileDescriptor2);
 303
 304   ASSERT_NO_ERROR(fs::remove(Twine(TempPath2)));
 305
 306   // Two paths representing the same file on disk should still provide the
 307   // same unique id.  We can test this by making a hard link.
 308   ASSERT_NO_ERROR(fs::create_link(Twine(TempPath), Twine(TempPath2)));
 309   fs::UniqueID D2;
 310   ASSERT_NO_ERROR(fs::getUniqueID(Twine(TempPath2), D2));
 311   ASSERT_EQ(D2, F1);
 312
 313   ::close(FileDescriptor);
 314
 315   SmallString<128> Dir1;
 316   ASSERT_NO_ERROR(
 317      fs::createUniqueDirectory("dir1", Dir1));
 318   ASSERT_NO_ERROR(fs::getUniqueID(Dir1.c_str(), F1));
 319   ASSERT_NO_ERROR(fs::getUniqueID(Dir1.c_str(), F2));
 320   ASSERT_EQ(F1, F2);
 321
 322   SmallString<128> Dir2;
 323   ASSERT_NO_ERROR(
 324      fs::createUniqueDirectory("dir2", Dir2));
 325   ASSERT_NO_ERROR(fs::getUniqueID(Dir2.c_str(), F2));
 326   ASSERT_NE(F1, F2);
 327 }
 328
 329 TEST_F(FileSystemTest, TempFiles) {
 330   // Create a temp file.
 331   int FileDescriptor;
 332   SmallString<64> TempPath;
 333   ASSERT_NO_ERROR(
 334       fs::createTemporaryFile("prefix", "temp", FileDescriptor, TempPath));
 335
 336   // Make sure it exists.
 337   ASSERT_TRUE(sys::fs::exists(Twine(TempPath)));
 338
 339   // Create another temp tile.
 340   int FD2;
 341   SmallString<64> TempPath2;
 342   ASSERT_NO_ERROR(fs::createTemporaryFile("prefix", "temp", FD2, TempPath2));
 343   ASSERT_TRUE(TempPath2.endswith(".temp"));
 344   ASSERT_NE(TempPath.str(), TempPath2.str());
 345
 346   fs::file_status A, B;
 347   ASSERT_NO_ERROR(fs::status(Twine(TempPath), A));
 348   ASSERT_NO_ERROR(fs::status(Twine(TempPath2), B));
 349   EXPECT_FALSE(fs::equivalent(A, B));
 350
 351   ::close(FD2);
 352
 353   // Remove Temp2.
 354   ASSERT_NO_ERROR(fs::remove(Twine(TempPath2)));
 355   ASSERT_NO_ERROR(fs::remove(Twine(TempPath2)));
 356   ASSERT_EQ(fs::remove(Twine(TempPath2), false),
 357             errc::no_such_file_or_directory);
 358
 359   std::error_code EC = fs::status(TempPath2.c_str(), B);
 360   EXPECT_EQ(EC, errc::no_such_file_or_directory);
 361   EXPECT_EQ(B.type(), fs::file_type::file_not_found);
 362
 363   // Make sure Temp2 doesn't exist.
 364   ASSERT_EQ(fs::access(Twine(TempPath2), sys::fs::AccessMode::Exist),
 365             errc::no_such_file_or_directory);
 366
 367   SmallString<64> TempPath3;
 368   ASSERT_NO_ERROR(fs::createTemporaryFile("prefix", "", TempPath3));
 369   ASSERT_FALSE(TempPath3.endswith("."));
 370
 371   // Create a hard link to Temp1.
 372   ASSERT_NO_ERROR(fs::create_link(Twine(TempPath), Twine(TempPath2)));
 373   bool equal;
 374   ASSERT_NO_ERROR(fs::equivalent(Twine(TempPath), Twine(TempPath2), equal));
 375   EXPECT_TRUE(equal);
 376   ASSERT_NO_ERROR(fs::status(Twine(TempPath), A));
 377   ASSERT_NO_ERROR(fs::status(Twine(TempPath2), B));
 378   EXPECT_TRUE(fs::equivalent(A, B));
 379
 380   // Remove Temp1.
 381   ::close(FileDescriptor);
 382   ASSERT_NO_ERROR(fs::remove(Twine(TempPath)));
 383
 384   // Remove the hard link.
 385   ASSERT_NO_ERROR(fs::remove(Twine(TempPath2)));
 386
 387   // Make sure Temp1 doesn't exist.
 388   ASSERT_EQ(fs::access(Twine(TempPath), sys::fs::AccessMode::Exist),
 389             errc::no_such_file_or_directory);
 390
 391 #ifdef LLVM_ON_WIN32
 392   // Path name > 260 chars should get an error.
 393   const char *Path270 =
 394     "abcdefghijklmnopqrstuvwxyz9abcdefghijklmnopqrstuvwxyz8"
 395     "abcdefghijklmnopqrstuvwxyz7abcdefghijklmnopqrstuvwxyz6"
 396     "abcdefghijklmnopqrstuvwxyz5abcdefghijklmnopqrstuvwxyz4"
 397     "abcdefghijklmnopqrstuvwxyz3abcdefghijklmnopqrstuvwxyz2"
 398     "abcdefghijklmnopqrstuvwxyz1abcdefghijklmnopqrstuvwxyz0";
 399   EXPECT_EQ(fs::createUniqueFile(Twine(Path270), FileDescriptor, TempPath),
 400             errc::no_such_file_or_directory);
 401 #endif
 402 }
 403
 404 TEST_F(FileSystemTest, CreateDir) {
 405   ASSERT_NO_ERROR(fs::create_directory(Twine(TestDirectory) + "foo"));
 406   ASSERT_NO_ERROR(fs::create_directory(Twine(TestDirectory) + "foo"));
 407   ASSERT_EQ(fs::create_directory(Twine(TestDirectory) + "foo", false),
 408             errc::file_exists);
 409   ASSERT_NO_ERROR(fs::remove(Twine(TestDirectory) + "foo"));
 410 }
 411
 412 TEST_F(FileSystemTest, DirectoryIteration) {
 413   std::error_code ec;
 414   for (fs::directory_iterator i(".", ec), e; i != e; i.increment(ec))
 415     ASSERT_NO_ERROR(ec);
 416
 417   // Create a known hierarchy to recurse over.
 418   ASSERT_NO_ERROR(
 419       fs::create_directories(Twine(TestDirectory) + "/recursive/a0/aa1"));
 420   ASSERT_NO_ERROR(
 421       fs::create_directories(Twine(TestDirectory) + "/recursive/a0/ab1"));
 422   ASSERT_NO_ERROR(fs::create_directories(Twine(TestDirectory) +
 423                                          "/recursive/dontlookhere/da1"));
 424   ASSERT_NO_ERROR(
 425       fs::create_directories(Twine(TestDirectory) + "/recursive/z0/za1"));
 426   ASSERT_NO_ERROR(
 427       fs::create_directories(Twine(TestDirectory) + "/recursive/pop/p1"));
 428   typedef std::vector<std::string> v_t;
 429   v_t visited;
 430   for (fs::recursive_directory_iterator i(Twine(TestDirectory)
 431          + "/recursive", ec), e; i != e; i.increment(ec)){
 432     ASSERT_NO_ERROR(ec);
 433     if (path::filename(i->path()) == "p1") {
 434       i.pop();
 435       // FIXME: recursive_directory_iterator should be more robust.
 436       if (i == e) break;
 437     }
 438     if (path::filename(i->path()) == "dontlookhere")
 439       i.no_push();
 440     visited.push_back(path::filename(i->path()));
 441   }
 442   v_t::const_iterator a0 = std::find(visited.begin(), visited.end(), "a0");
 443   v_t::const_iterator aa1 = std::find(visited.begin(), visited.end(), "aa1");
 444   v_t::const_iterator ab1 = std::find(visited.begin(), visited.end(), "ab1");
 445   v_t::const_iterator dontlookhere = std::find(visited.begin(), visited.end(),
 446                                                "dontlookhere");
 447   v_t::const_iterator da1 = std::find(visited.begin(), visited.end(), "da1");
 448   v_t::const_iterator z0 = std::find(visited.begin(), visited.end(), "z0");
 449   v_t::const_iterator za1 = std::find(visited.begin(), visited.end(), "za1");
 450   v_t::const_iterator pop = std::find(visited.begin(), visited.end(), "pop");
 451   v_t::const_iterator p1 = std::find(visited.begin(), visited.end(), "p1");
 452
 453   // Make sure that each path was visited correctly.
 454   ASSERT_NE(a0, visited.end());
 455   ASSERT_NE(aa1, visited.end());
 456   ASSERT_NE(ab1, visited.end());
 457   ASSERT_NE(dontlookhere, visited.end());
 458   ASSERT_EQ(da1, visited.end()); // Not visited.
 459   ASSERT_NE(z0, visited.end());
 460   ASSERT_NE(za1, visited.end());
 461   ASSERT_NE(pop, visited.end());
 462   ASSERT_EQ(p1, visited.end()); // Not visited.
 463
 464   // Make sure that parents were visited before children. No other ordering
 465   // guarantees can be made across siblings.
 466   ASSERT_LT(a0, aa1);
 467   ASSERT_LT(a0, ab1);
 468   ASSERT_LT(z0, za1);
 469
 470   ASSERT_NO_ERROR(fs::remove(Twine(TestDirectory) + "/recursive/a0/aa1"));
 471   ASSERT_NO_ERROR(fs::remove(Twine(TestDirectory) + "/recursive/a0/ab1"));
 472   ASSERT_NO_ERROR(fs::remove(Twine(TestDirectory) + "/recursive/a0"));
 473   ASSERT_NO_ERROR(
 474       fs::remove(Twine(TestDirectory) + "/recursive/dontlookhere/da1"));
 475   ASSERT_NO_ERROR(fs::remove(Twine(TestDirectory) + "/recursive/dontlookhere"));
 476   ASSERT_NO_ERROR(fs::remove(Twine(TestDirectory) + "/recursive/pop/p1"));
 477   ASSERT_NO_ERROR(fs::remove(Twine(TestDirectory) + "/recursive/pop"));
 478   ASSERT_NO_ERROR(fs::remove(Twine(TestDirectory) + "/recursive/z0/za1"));
 479   ASSERT_NO_ERROR(fs::remove(Twine(TestDirectory) + "/recursive/z0"));
 480   ASSERT_NO_ERROR(fs::remove(Twine(TestDirectory) + "/recursive"));
 481 }
 482
 483 const char archive[] = "!<arch>\x0A";
 484 const char bitcode[] = "\xde\xc0\x17\x0b";
 485 const char coff_object[] = "\x00\x00......";
 486 const char coff_import_library[] = "\x00\x00\xff\xff....";
 487 const char elf_relocatable[] = { 0x7f, 'E', 'L', 'F', 1, 2, 1, 0, 0,
 488                                  0,    0,   0,   0,   0, 0, 0, 0, 1 };
 489 const char macho_universal_binary[] = "\xca\xfe\xba\xbe...\0x00";
 490 const char macho_object[] = "\xfe\xed\xfa\xce..........\x00\x01";
 491 const char macho_executable[] = "\xfe\xed\xfa\xce..........\x00\x02";
 492 const char macho_fixed_virtual_memory_shared_lib[] =
 493     "\xfe\xed\xfa\xce..........\x00\x03";
 494 const char macho_core[] = "\xfe\xed\xfa\xce..........\x00\x04";
 495 const char macho_preload_executable[] = "\xfe\xed\xfa\xce..........\x00\x05";
 496 const char macho_dynamically_linked_shared_lib[] =
 497     "\xfe\xed\xfa\xce..........\x00\x06";
 498 const char macho_dynamic_linker[] = "\xfe\xed\xfa\xce..........\x00\x07";
 499 const char macho_bundle[] = "\xfe\xed\xfa\xce..........\x00\x08";
 500 const char macho_dsym_companion[] = "\xfe\xed\xfa\xce..........\x00\x0a";
 501 const char windows_resource[] = "\x00\x00\x00\x00\x020\x00\x00\x00\xff";
 502
 503 TEST_F(FileSystemTest, Magic) {
 504   struct type {
 505     const char *filename;
 506     const char *magic_str;
 507     size_t magic_str_len;
 508     fs::file_magic magic;
 509   } types[] = {
 510 #define DEFINE(magic)                                           \
 511     { #magic, magic, sizeof(magic), fs::file_magic::magic }
 512     DEFINE(archive),
 513     DEFINE(bitcode),
 514     DEFINE(coff_object),
 515     DEFINE(coff_import_library),
 516     DEFINE(elf_relocatable),
 517     DEFINE(macho_universal_binary),
 518     DEFINE(macho_object),
 519     DEFINE(macho_executable),
 520     DEFINE(macho_fixed_virtual_memory_shared_lib),
 521     DEFINE(macho_core),
 522     DEFINE(macho_preload_executable),
 523     DEFINE(macho_dynamically_linked_shared_lib),
 524     DEFINE(macho_dynamic_linker),
 525     DEFINE(macho_bundle),
 526     DEFINE(macho_dsym_companion),
 527     DEFINE(windows_resource)
 528 #undef DEFINE
 529     };
 530
 531   // Create some files filled with magic.
 532   for (type *i = types, *e = types + (sizeof(types) / sizeof(type)); i != e;
 533                                                                      ++i) {
 534     SmallString<128> file_pathname(TestDirectory);
 535     path::append(file_pathname, i->filename);
 536     std::error_code EC;
 537     raw_fd_ostream file(file_pathname, EC, sys::fs::F_None);
 538     ASSERT_FALSE(file.has_error());
 539     StringRef magic(i->magic_str, i->magic_str_len);
 540     file << magic;
 541     file.close();
 542     EXPECT_EQ(i->magic, fs::identify_magic(magic));
 543     ASSERT_NO_ERROR(fs::remove(Twine(file_pathname)));
 544   }
 545 }
 546
 547 #ifdef LLVM_ON_WIN32
 548 TEST_F(FileSystemTest, CarriageReturn) {
 549   SmallString<128> FilePathname(TestDirectory);
 550   std::error_code EC;
 551   path::append(FilePathname, "test");
 552
 553   {
 554     raw_fd_ostream File(FilePathname, EC, sys::fs::F_Text);
 555     ASSERT_NO_ERROR(EC);
 556     File << '\n';
 557   }
 558   {
 559     auto Buf = MemoryBuffer::getFile(FilePathname.str());
 560     EXPECT_TRUE((bool)Buf);
 561     EXPECT_EQ(Buf.get()->getBuffer(), "\r\n");
 562   }
 563
 564   {
 565     raw_fd_ostream File(FilePathname, EC, sys::fs::F_None);
 566     ASSERT_NO_ERROR(EC);
 567     File << '\n';
 568   }
 569   {
 570     auto Buf = MemoryBuffer::getFile(FilePathname.str());
 571     EXPECT_TRUE((bool)Buf);
 572     EXPECT_EQ(Buf.get()->getBuffer(), "\n");
 573   }
 574   ASSERT_NO_ERROR(fs::remove(Twine(FilePathname)));
 575 }
 576 #endif
 577
 578 TEST_F(FileSystemTest, FileMapping) {
 579   // Create a temp file.
 580   int FileDescriptor;
 581   SmallString<64> TempPath;
 582   ASSERT_NO_ERROR(
 583       fs::createTemporaryFile("prefix", "temp", FileDescriptor, TempPath));
 584   // Map in temp file and add some content
 585   std::error_code EC;
 586   StringRef Val("hello there");
 587   {
 588     fs::mapped_file_region mfr(FileDescriptor,
 589                                true,
 590                                fs::mapped_file_region::readwrite,
 591                                4096,
 592                                0,
 593                                EC);
 594     ASSERT_NO_ERROR(EC);
 595     std::copy(Val.begin(), Val.end(), mfr.data());
 596     // Explicitly add a 0.
 597     mfr.data()[Val.size()] = 0;
 598     // Unmap temp file
 599   }
 600
 601   // Map it back in read-only
 602   fs::mapped_file_region mfr(Twine(TempPath),
 603                              fs::mapped_file_region::readonly,
 604                              0,
 605                              0,
 606                              EC);
 607   ASSERT_NO_ERROR(EC);
 608
 609   // Verify content
 610   EXPECT_EQ(StringRef(mfr.const_data()), Val);
 611
 612   // Unmap temp file
 613
 614   fs::mapped_file_region m(Twine(TempPath),
 615                              fs::mapped_file_region::readonly,
 616                              0,
 617                              0,
 618                              EC);
 619   ASSERT_NO_ERROR(EC);
 620   const char *Data = m.const_data();
 621   fs::mapped_file_region mfrrv(std::move(m));
 622   EXPECT_EQ(mfrrv.const_data(), Data);
 623 }
 624
 625 TEST(Support, NormalizePath) {
 626 #if defined(LLVM_ON_WIN32)
 627 #define EXPECT_PATH_IS(path__, windows__, not_windows__)                        \
 628   EXPECT_EQ(path__, windows__);
 629 #else
 630 #define EXPECT_PATH_IS(path__, windows__, not_windows__)                        \
 631   EXPECT_EQ(path__, not_windows__);
 632 #endif
 633
 634   SmallString<64> Path1("a");
 635   SmallString<64> Path2("a/b");
 636   SmallString<64> Path3("a\\b");
 637   SmallString<64> Path4("a\\\\b");
 638   SmallString<64> Path5("\\a");
 639   SmallString<64> Path6("a\\");
 640
 641   path::native(Path1);
 642   EXPECT_PATH_IS(Path1, "a", "a");
 643
 644   path::native(Path2);
 645   EXPECT_PATH_IS(Path2, "a\\b", "a/b");
 646
 647   path::native(Path3);
 648   EXPECT_PATH_IS(Path3, "a\\b", "a/b");
 649
 650   path::native(Path4);
 651   EXPECT_PATH_IS(Path4, "a\\\\b", "a\\\\b");
 652
 653   path::native(Path5);
 654   EXPECT_PATH_IS(Path5, "\\a", "/a");
 655
 656   path::native(Path6);
 657   EXPECT_PATH_IS(Path6, "a\\", "a/");
 658
 659 #undef EXPECT_PATH_IS
 660 }
 661 } // anonymous namespace