gtest/test/gtest-port_test.cc

   1 // Copyright 2008, Google Inc.
   2 // All rights reserved.
   3 //
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   5 // modification, are permitted provided that the following conditions are
   6 // met:
   7 //
   8 //     * Redistributions of source code must retain the above copyright
   9 // notice, this list of conditions and the following disclaimer.
  10 //     * Redistributions in binary form must reproduce the above
  11 // copyright notice, this list of conditions and the following disclaimer
  12 // in the documentation and/or other materials provided with the
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  15 // contributors may be used to endorse or promote products derived from
  16 // this software without specific prior written permission.
  17 //
  18 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  19 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  20 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  21 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  22 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  23 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  24 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  25 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  26 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  27 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  28 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  29 //
  30 // Authors: vladl@google.com (Vlad Losev), wan@google.com (Zhanyong Wan)
  31 //
  32 // This file tests the internal cross-platform support utilities.
  33
  34 #include "gtest/internal/gtest-port.h"
  35
  36 #include <stdio.h>
  37
  38 #if GTEST_OS_MAC
  39 # include <time.h>
  40 #endif  // GTEST_OS_MAC
  41
  42 #include <list>
  43 #include <utility>  // For std::pair and std::make_pair.
  44 #include <vector>
  45
  46 #include "gtest/gtest.h"
  47 #include "gtest/gtest-spi.h"
  48
  49 // Indicates that this translation unit is part of Google Test's
  50 // implementation.  It must come before gtest-internal-inl.h is
  51 // included, or there will be a compiler error.  This trick is to
  52 // prevent a user from accidentally including gtest-internal-inl.h in
  53 // his code.
  54 #define GTEST_IMPLEMENTATION_ 1
  55 #include "src/gtest-internal-inl.h"
  56 #undef GTEST_IMPLEMENTATION_
  57
  58 using std::make_pair;
  59 using std::pair;
  60
  61 namespace testing {
  62 namespace internal {
  63
  64 TEST(IsXDigitTest, WorksForNarrowAscii) {
  65   EXPECT_TRUE(IsXDigit('0'));
  66   EXPECT_TRUE(IsXDigit('9'));
  67   EXPECT_TRUE(IsXDigit('A'));
  68   EXPECT_TRUE(IsXDigit('F'));
  69   EXPECT_TRUE(IsXDigit('a'));
  70   EXPECT_TRUE(IsXDigit('f'));
  71
  72   EXPECT_FALSE(IsXDigit('-'));
  73   EXPECT_FALSE(IsXDigit('g'));
  74   EXPECT_FALSE(IsXDigit('G'));
  75 }
  76
  77 TEST(IsXDigitTest, ReturnsFalseForNarrowNonAscii) {
  78   EXPECT_FALSE(IsXDigit(static_cast<char>(0x80)));
  79   EXPECT_FALSE(IsXDigit(static_cast<char>('0' | 0x80)));
  80 }
  81
  82 TEST(IsXDigitTest, WorksForWideAscii) {
  83   EXPECT_TRUE(IsXDigit(L'0'));
  84   EXPECT_TRUE(IsXDigit(L'9'));
  85   EXPECT_TRUE(IsXDigit(L'A'));
  86   EXPECT_TRUE(IsXDigit(L'F'));
  87   EXPECT_TRUE(IsXDigit(L'a'));
  88   EXPECT_TRUE(IsXDigit(L'f'));
  89
  90   EXPECT_FALSE(IsXDigit(L'-'));
  91   EXPECT_FALSE(IsXDigit(L'g'));
  92   EXPECT_FALSE(IsXDigit(L'G'));
  93 }
  94
  95 TEST(IsXDigitTest, ReturnsFalseForWideNonAscii) {
  96   EXPECT_FALSE(IsXDigit(static_cast<wchar_t>(0x80)));
  97   EXPECT_FALSE(IsXDigit(static_cast<wchar_t>(L'0' | 0x80)));
  98   EXPECT_FALSE(IsXDigit(static_cast<wchar_t>(L'0' | 0x100)));
  99 }
 100
 101 class Base {
 102  public:
 103   // Copy constructor and assignment operator do exactly what we need, so we
 104   // use them.
 105   Base() : member_(0) {}
 106   explicit Base(int n) : member_(n) {}
 107   virtual ~Base() {}
 108   int member() { return member_; }
 109
 110  private:
 111   int member_;
 112 };
 113
 114 class Derived : public Base {
 115  public:
 116   explicit Derived(int n) : Base(n) {}
 117 };
 118
 119 TEST(ImplicitCastTest, ConvertsPointers) {
 120   Derived derived(0);
 121   EXPECT_TRUE(&derived == ::testing::internal::ImplicitCast_<Base*>(&derived));
 122 }
 123
 124 TEST(ImplicitCastTest, CanUseInheritance) {
 125   Derived derived(1);
 126   Base base = ::testing::internal::ImplicitCast_<Base>(derived);
 127   EXPECT_EQ(derived.member(), base.member());
 128 }
 129
 130 class Castable {
 131  public:
 132   explicit Castable(bool* converted) : converted_(converted) {}
 133   operator Base() {
 134     *converted_ = true;
 135     return Base();
 136   }
 137
 138  private:
 139   bool* converted_;
 140 };
 141
 142 TEST(ImplicitCastTest, CanUseNonConstCastOperator) {
 143   bool converted = false;
 144   Castable castable(&converted);
 145   Base base = ::testing::internal::ImplicitCast_<Base>(castable);
 146   EXPECT_TRUE(converted);
 147 }
 148
 149 class ConstCastable {
 150  public:
 151   explicit ConstCastable(bool* converted) : converted_(converted) {}
 152   operator Base() const {
 153     *converted_ = true;
 154     return Base();
 155   }
 156
 157  private:
 158   bool* converted_;
 159 };
 160
 161 TEST(ImplicitCastTest, CanUseConstCastOperatorOnConstValues) {
 162   bool converted = false;
 163   const ConstCastable const_castable(&converted);
 164   Base base = ::testing::internal::ImplicitCast_<Base>(const_castable);
 165   EXPECT_TRUE(converted);
 166 }
 167
 168 class ConstAndNonConstCastable {
 169  public:
 170   ConstAndNonConstCastable(bool* converted, bool* const_converted)
 171       : converted_(converted), const_converted_(const_converted) {}
 172   operator Base() {
 173     *converted_ = true;
 174     return Base();
 175   }
 176   operator Base() const {
 177     *const_converted_ = true;
 178     return Base();
 179   }
 180
 181  private:
 182   bool* converted_;
 183   bool* const_converted_;
 184 };
 185
 186 TEST(ImplicitCastTest, CanSelectBetweenConstAndNonConstCasrAppropriately) {
 187   bool converted = false;
 188   bool const_converted = false;
 189   ConstAndNonConstCastable castable(&converted, &const_converted);
 190   Base base = ::testing::internal::ImplicitCast_<Base>(castable);
 191   EXPECT_TRUE(converted);
 192   EXPECT_FALSE(const_converted);
 193
 194   converted = false;
 195   const_converted = false;
 196   const ConstAndNonConstCastable const_castable(&converted, &const_converted);
 197   base = ::testing::internal::ImplicitCast_<Base>(const_castable);
 198   EXPECT_FALSE(converted);
 199   EXPECT_TRUE(const_converted);
 200 }
 201
 202 class To {
 203  public:
 204   To(bool* converted) { *converted = true; }  // NOLINT
 205 };
 206
 207 TEST(ImplicitCastTest, CanUseImplicitConstructor) {
 208   bool converted = false;
 209   To to = ::testing::internal::ImplicitCast_<To>(&converted);
 210   (void)to;
 211   EXPECT_TRUE(converted);
 212 }
 213
 214 TEST(IteratorTraitsTest, WorksForSTLContainerIterators) {
 215   StaticAssertTypeEq<int,
 216       IteratorTraits< ::std::vector<int>::const_iterator>::value_type>();
 217   StaticAssertTypeEq<bool,
 218       IteratorTraits< ::std::list<bool>::iterator>::value_type>();
 219 }
 220
 221 TEST(IteratorTraitsTest, WorksForPointerToNonConst) {
 222   StaticAssertTypeEq<char, IteratorTraits<char*>::value_type>();
 223   StaticAssertTypeEq<const void*, IteratorTraits<const void**>::value_type>();
 224 }
 225
 226 TEST(IteratorTraitsTest, WorksForPointerToConst) {
 227   StaticAssertTypeEq<char, IteratorTraits<const char*>::value_type>();
 228   StaticAssertTypeEq<const void*,
 229       IteratorTraits<const void* const*>::value_type>();
 230 }
 231
 232 // Tests that the element_type typedef is available in scoped_ptr and refers
 233 // to the parameter type.
 234 TEST(ScopedPtrTest, DefinesElementType) {
 235   StaticAssertTypeEq<int, ::testing::internal::scoped_ptr<int>::element_type>();
 236 }
 237
 238 // TODO(vladl@google.com): Implement THE REST of scoped_ptr tests.
 239
 240 TEST(GtestCheckSyntaxTest, BehavesLikeASingleStatement) {
 241   if (AlwaysFalse())
 242     GTEST_CHECK_(false) << "This should never be executed; "
 243                            "It's a compilation test only.";
 244
 245   if (AlwaysTrue())
 246     GTEST_CHECK_(true);
 247   else
 248     ;  // NOLINT
 249
 250   if (AlwaysFalse())
 251     ;  // NOLINT
 252   else
 253     GTEST_CHECK_(true) << "";
 254 }
 255
 256 TEST(GtestCheckSyntaxTest, WorksWithSwitch) {
 257   switch (0) {
 258     case 1:
 259       break;
 260     default:
 261       GTEST_CHECK_(true);
 262   }
 263
 264   switch (0)
 265     case 0:
 266       GTEST_CHECK_(true) << "Check failed in switch case";
 267 }
 268
 269 // Verifies behavior of FormatFileLocation.
 270 TEST(FormatFileLocationTest, FormatsFileLocation) {
 271   EXPECT_PRED_FORMAT2(IsSubstring, "foo.cc", FormatFileLocation("foo.cc", 42));
 272   EXPECT_PRED_FORMAT2(IsSubstring, "42", FormatFileLocation("foo.cc", 42));
 273 }
 274
 275 TEST(FormatFileLocationTest, FormatsUnknownFile) {
 276   EXPECT_PRED_FORMAT2(
 277       IsSubstring, "unknown file", FormatFileLocation(NULL, 42));
 278   EXPECT_PRED_FORMAT2(IsSubstring, "42", FormatFileLocation(NULL, 42));
 279 }
 280
 281 TEST(FormatFileLocationTest, FormatsUknownLine) {
 282   EXPECT_EQ("foo.cc:", FormatFileLocation("foo.cc", -1));
 283 }
 284
 285 TEST(FormatFileLocationTest, FormatsUknownFileAndLine) {
 286   EXPECT_EQ("unknown file:", FormatFileLocation(NULL, -1));
 287 }
 288
 289 // Verifies behavior of FormatCompilerIndependentFileLocation.
 290 TEST(FormatCompilerIndependentFileLocationTest, FormatsFileLocation) {
 291   EXPECT_EQ("foo.cc:42", FormatCompilerIndependentFileLocation("foo.cc", 42));
 292 }
 293
 294 TEST(FormatCompilerIndependentFileLocationTest, FormatsUknownFile) {
 295   EXPECT_EQ("unknown file:42",
 296             FormatCompilerIndependentFileLocation(NULL, 42));
 297 }
 298
 299 TEST(FormatCompilerIndependentFileLocationTest, FormatsUknownLine) {
 300   EXPECT_EQ("foo.cc", FormatCompilerIndependentFileLocation("foo.cc", -1));
 301 }
 302
 303 TEST(FormatCompilerIndependentFileLocationTest, FormatsUknownFileAndLine) {
 304   EXPECT_EQ("unknown file", FormatCompilerIndependentFileLocation(NULL, -1));
 305 }
 306
 307 #if GTEST_OS_MAC || GTEST_OS_QNX
 308 void* ThreadFunc(void* data) {
 309   pthread_mutex_t* mutex = static_cast<pthread_mutex_t*>(data);
 310   pthread_mutex_lock(mutex);
 311   pthread_mutex_unlock(mutex);
 312   return NULL;
 313 }
 314
 315 TEST(GetThreadCountTest, ReturnsCorrectValue) {
 316   EXPECT_EQ(1U, GetThreadCount());
 317   pthread_mutex_t mutex;
 318   pthread_attr_t  attr;
 319   pthread_t       thread_id;
 320
 321   // TODO(vladl@google.com): turn mutex into internal::Mutex for automatic
 322   // destruction.
 323   pthread_mutex_init(&mutex, NULL);
 324   pthread_mutex_lock(&mutex);
 325   ASSERT_EQ(0, pthread_attr_init(&attr));
 326   ASSERT_EQ(0, pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_JOINABLE));
 327
 328   const int status = pthread_create(&thread_id, &attr, &ThreadFunc, &mutex);
 329   ASSERT_EQ(0, pthread_attr_destroy(&attr));
 330   ASSERT_EQ(0, status);
 331   EXPECT_EQ(2U, GetThreadCount());
 332   pthread_mutex_unlock(&mutex);
 333
 334   void* dummy;
 335   ASSERT_EQ(0, pthread_join(thread_id, &dummy));
 336
 337 # if GTEST_OS_MAC
 338
 339   // MacOS X may not immediately report the updated thread count after
 340   // joining a thread, causing flakiness in this test. To counter that, we
 341   // wait for up to .5 seconds for the OS to report the correct value.
 342   for (int i = 0; i < 5; ++i) {
 343     if (GetThreadCount() == 1)
 344       break;
 345
 346     SleepMilliseconds(100);
 347   }
 348
 349 # endif  // GTEST_OS_MAC
 350
 351   EXPECT_EQ(1U, GetThreadCount());
 352   pthread_mutex_destroy(&mutex);
 353 }
 354 #else
 355 TEST(GetThreadCountTest, ReturnsZeroWhenUnableToCountThreads) {
 356   EXPECT_EQ(0U, GetThreadCount());
 357 }
 358 #endif  // GTEST_OS_MAC || GTEST_OS_QNX
 359
 360 TEST(GtestCheckDeathTest, DiesWithCorrectOutputOnFailure) {
 361   const bool a_false_condition = false;
 362   const char regex[] =
 363 #ifdef _MSC_VER
 364      "gtest-port_test\\.cc\\(\\d+\\):"
 365 #elif GTEST_USES_POSIX_RE
 366      "gtest-port_test\\.cc:[0-9]+"
 367 #else
 368      "gtest-port_test\\.cc:\\d+"
 369 #endif  // _MSC_VER
 370      ".*a_false_condition.*Extra info.*";
 371
 372   EXPECT_DEATH_IF_SUPPORTED(GTEST_CHECK_(a_false_condition) << "Extra info",
 373                             regex);
 374 }
 375
 376 #if GTEST_HAS_DEATH_TEST
 377
 378 TEST(GtestCheckDeathTest, LivesSilentlyOnSuccess) {
 379   EXPECT_EXIT({
 380       GTEST_CHECK_(true) << "Extra info";
 381       ::std::cerr << "Success\n";
 382       exit(0); },
 383       ::testing::ExitedWithCode(0), "Success");
 384 }
 385
 386 #endif  // GTEST_HAS_DEATH_TEST
 387
 388 // Verifies that Google Test choose regular expression engine appropriate to
 389 // the platform. The test will produce compiler errors in case of failure.
 390 // For simplicity, we only cover the most important platforms here.
 391 TEST(RegexEngineSelectionTest, SelectsCorrectRegexEngine) {
 392 #if GTEST_HAS_POSIX_RE
 393
 394   EXPECT_TRUE(GTEST_USES_POSIX_RE);
 395
 396 #else
 397
 398   EXPECT_TRUE(GTEST_USES_SIMPLE_RE);
 399
 400 #endif
 401 }
 402
 403 #if GTEST_USES_POSIX_RE
 404
 405 # if GTEST_HAS_TYPED_TEST
 406
 407 template <typename Str>
 408 class RETest : public ::testing::Test {};
 409
 410 // Defines StringTypes as the list of all string types that class RE
 411 // supports.
 412 typedef testing::Types<
 413     ::std::string,
 414 #  if GTEST_HAS_GLOBAL_STRING
 415     ::string,
 416 #  endif  // GTEST_HAS_GLOBAL_STRING
 417     const char*> StringTypes;
 418
 419 TYPED_TEST_CASE(RETest, StringTypes);
 420
 421 // Tests RE's implicit constructors.
 422 TYPED_TEST(RETest, ImplicitConstructorWorks) {
 423   const RE empty(TypeParam(""));
 424   EXPECT_STREQ("", empty.pattern());
 425
 426   const RE simple(TypeParam("hello"));
 427   EXPECT_STREQ("hello", simple.pattern());
 428
 429   const RE normal(TypeParam(".*(\\w+)"));
 430   EXPECT_STREQ(".*(\\w+)", normal.pattern());
 431 }
 432
 433 // Tests that RE's constructors reject invalid regular expressions.
 434 TYPED_TEST(RETest, RejectsInvalidRegex) {
 435   EXPECT_NONFATAL_FAILURE({
 436     const RE invalid(TypeParam("?"));
 437   }, "\"?\" is not a valid POSIX Extended regular expression.");
 438 }
 439
 440 // Tests RE::FullMatch().
 441 TYPED_TEST(RETest, FullMatchWorks) {
 442   const RE empty(TypeParam(""));
 443   EXPECT_TRUE(RE::FullMatch(TypeParam(""), empty));
 444   EXPECT_FALSE(RE::FullMatch(TypeParam("a"), empty));
 445
 446   const RE re(TypeParam("a.*z"));
 447   EXPECT_TRUE(RE::FullMatch(TypeParam("az"), re));
 448   EXPECT_TRUE(RE::FullMatch(TypeParam("axyz"), re));
 449   EXPECT_FALSE(RE::FullMatch(TypeParam("baz"), re));
 450   EXPECT_FALSE(RE::FullMatch(TypeParam("azy"), re));
 451 }
 452
 453 // Tests RE::PartialMatch().
 454 TYPED_TEST(RETest, PartialMatchWorks) {
 455   const RE empty(TypeParam(""));
 456   EXPECT_TRUE(RE::PartialMatch(TypeParam(""), empty));
 457   EXPECT_TRUE(RE::PartialMatch(TypeParam("a"), empty));
 458
 459   const RE re(TypeParam("a.*z"));
 460   EXPECT_TRUE(RE::PartialMatch(TypeParam("az"), re));
 461   EXPECT_TRUE(RE::PartialMatch(TypeParam("axyz"), re));
 462   EXPECT_TRUE(RE::PartialMatch(TypeParam("baz"), re));
 463   EXPECT_TRUE(RE::PartialMatch(TypeParam("azy"), re));
 464   EXPECT_FALSE(RE::PartialMatch(TypeParam("zza"), re));
 465 }
 466
 467 # endif  // GTEST_HAS_TYPED_TEST
 468
 469 #elif GTEST_USES_SIMPLE_RE
 470
 471 TEST(IsInSetTest, NulCharIsNotInAnySet) {
 472   EXPECT_FALSE(IsInSet('\0', ""));
 473   EXPECT_FALSE(IsInSet('\0', "\0"));
 474   EXPECT_FALSE(IsInSet('\0', "a"));
 475 }
 476
 477 TEST(IsInSetTest, WorksForNonNulChars) {
 478   EXPECT_FALSE(IsInSet('a', "Ab"));
 479   EXPECT_FALSE(IsInSet('c', ""));
 480
 481   EXPECT_TRUE(IsInSet('b', "bcd"));
 482   EXPECT_TRUE(IsInSet('b', "ab"));
 483 }
 484
 485 TEST(IsAsciiDigitTest, IsFalseForNonDigit) {
 486   EXPECT_FALSE(IsAsciiDigit('\0'));
 487   EXPECT_FALSE(IsAsciiDigit(' '));
 488   EXPECT_FALSE(IsAsciiDigit('+'));
 489   EXPECT_FALSE(IsAsciiDigit('-'));
 490   EXPECT_FALSE(IsAsciiDigit('.'));
 491   EXPECT_FALSE(IsAsciiDigit('a'));
 492 }
 493
 494 TEST(IsAsciiDigitTest, IsTrueForDigit) {
 495   EXPECT_TRUE(IsAsciiDigit('0'));
 496   EXPECT_TRUE(IsAsciiDigit('1'));
 497   EXPECT_TRUE(IsAsciiDigit('5'));
 498   EXPECT_TRUE(IsAsciiDigit('9'));
 499 }
 500
 501 TEST(IsAsciiPunctTest, IsFalseForNonPunct) {
 502   EXPECT_FALSE(IsAsciiPunct('\0'));
 503   EXPECT_FALSE(IsAsciiPunct(' '));
 504   EXPECT_FALSE(IsAsciiPunct('\n'));
 505   EXPECT_FALSE(IsAsciiPunct('a'));
 506   EXPECT_FALSE(IsAsciiPunct('0'));
 507 }
 508
 509 TEST(IsAsciiPunctTest, IsTrueForPunct) {
 510   for (const char* p = "^-!\"#$%&'()*+,./:;<=>?@[\\]_`{|}~"; *p; p++) {
 511     EXPECT_PRED1(IsAsciiPunct, *p);
 512   }
 513 }
 514
 515 TEST(IsRepeatTest, IsFalseForNonRepeatChar) {
 516   EXPECT_FALSE(IsRepeat('\0'));
 517   EXPECT_FALSE(IsRepeat(' '));
 518   EXPECT_FALSE(IsRepeat('a'));
 519   EXPECT_FALSE(IsRepeat('1'));
 520   EXPECT_FALSE(IsRepeat('-'));
 521 }
 522
 523 TEST(IsRepeatTest, IsTrueForRepeatChar) {
 524   EXPECT_TRUE(IsRepeat('?'));
 525   EXPECT_TRUE(IsRepeat('*'));
 526   EXPECT_TRUE(IsRepeat('+'));
 527 }
 528
 529 TEST(IsAsciiWhiteSpaceTest, IsFalseForNonWhiteSpace) {
 530   EXPECT_FALSE(IsAsciiWhiteSpace('\0'));
 531   EXPECT_FALSE(IsAsciiWhiteSpace('a'));
 532   EXPECT_FALSE(IsAsciiWhiteSpace('1'));
 533   EXPECT_FALSE(IsAsciiWhiteSpace('+'));
 534   EXPECT_FALSE(IsAsciiWhiteSpace('_'));
 535 }
 536
 537 TEST(IsAsciiWhiteSpaceTest, IsTrueForWhiteSpace) {
 538   EXPECT_TRUE(IsAsciiWhiteSpace(' '));
 539   EXPECT_TRUE(IsAsciiWhiteSpace('\n'));
 540   EXPECT_TRUE(IsAsciiWhiteSpace('\r'));
 541   EXPECT_TRUE(IsAsciiWhiteSpace('\t'));
 542   EXPECT_TRUE(IsAsciiWhiteSpace('\v'));
 543   EXPECT_TRUE(IsAsciiWhiteSpace('\f'));
 544 }
 545
 546 TEST(IsAsciiWordCharTest, IsFalseForNonWordChar) {
 547   EXPECT_FALSE(IsAsciiWordChar('\0'));
 548   EXPECT_FALSE(IsAsciiWordChar('+'));
 549   EXPECT_FALSE(IsAsciiWordChar('.'));
 550   EXPECT_FALSE(IsAsciiWordChar(' '));
 551   EXPECT_FALSE(IsAsciiWordChar('\n'));
 552 }
 553
 554 TEST(IsAsciiWordCharTest, IsTrueForLetter) {
 555   EXPECT_TRUE(IsAsciiWordChar('a'));
 556   EXPECT_TRUE(IsAsciiWordChar('b'));
 557   EXPECT_TRUE(IsAsciiWordChar('A'));
 558   EXPECT_TRUE(IsAsciiWordChar('Z'));
 559 }
 560
 561 TEST(IsAsciiWordCharTest, IsTrueForDigit) {
 562   EXPECT_TRUE(IsAsciiWordChar('0'));
 563   EXPECT_TRUE(IsAsciiWordChar('1'));
 564   EXPECT_TRUE(IsAsciiWordChar('7'));
 565   EXPECT_TRUE(IsAsciiWordChar('9'));
 566 }
 567
 568 TEST(IsAsciiWordCharTest, IsTrueForUnderscore) {
 569   EXPECT_TRUE(IsAsciiWordChar('_'));
 570 }
 571
 572 TEST(IsValidEscapeTest, IsFalseForNonPrintable) {
 573   EXPECT_FALSE(IsValidEscape('\0'));
 574   EXPECT_FALSE(IsValidEscape('\007'));
 575 }
 576
 577 TEST(IsValidEscapeTest, IsFalseForDigit) {
 578   EXPECT_FALSE(IsValidEscape('0'));
 579   EXPECT_FALSE(IsValidEscape('9'));
 580 }
 581
 582 TEST(IsValidEscapeTest, IsFalseForWhiteSpace) {
 583   EXPECT_FALSE(IsValidEscape(' '));
 584   EXPECT_FALSE(IsValidEscape('\n'));
 585 }
 586
 587 TEST(IsValidEscapeTest, IsFalseForSomeLetter) {
 588   EXPECT_FALSE(IsValidEscape('a'));
 589   EXPECT_FALSE(IsValidEscape('Z'));
 590 }
 591
 592 TEST(IsValidEscapeTest, IsTrueForPunct) {
 593   EXPECT_TRUE(IsValidEscape('.'));
 594   EXPECT_TRUE(IsValidEscape('-'));
 595   EXPECT_TRUE(IsValidEscape('^'));
 596   EXPECT_TRUE(IsValidEscape('$'));
 597   EXPECT_TRUE(IsValidEscape('('));
 598   EXPECT_TRUE(IsValidEscape(']'));
 599   EXPECT_TRUE(IsValidEscape('{'));
 600   EXPECT_TRUE(IsValidEscape('|'));
 601 }
 602
 603 TEST(IsValidEscapeTest, IsTrueForSomeLetter) {
 604   EXPECT_TRUE(IsValidEscape('d'));
 605   EXPECT_TRUE(IsValidEscape('D'));
 606   EXPECT_TRUE(IsValidEscape('s'));
 607   EXPECT_TRUE(IsValidEscape('S'));
 608   EXPECT_TRUE(IsValidEscape('w'));
 609   EXPECT_TRUE(IsValidEscape('W'));
 610 }
 611
 612 TEST(AtomMatchesCharTest, EscapedPunct) {
 613   EXPECT_FALSE(AtomMatchesChar(true, '\\', '\0'));
 614   EXPECT_FALSE(AtomMatchesChar(true, '\\', ' '));
 615   EXPECT_FALSE(AtomMatchesChar(true, '_', '.'));
 616   EXPECT_FALSE(AtomMatchesChar(true, '.', 'a'));
 617
 618   EXPECT_TRUE(AtomMatchesChar(true, '\\', '\\'));
 619   EXPECT_TRUE(AtomMatchesChar(true, '_', '_'));
 620   EXPECT_TRUE(AtomMatchesChar(true, '+', '+'));
 621   EXPECT_TRUE(AtomMatchesChar(true, '.', '.'));
 622 }
 623
 624 TEST(AtomMatchesCharTest, Escaped_d) {
 625   EXPECT_FALSE(AtomMatchesChar(true, 'd', '\0'));
 626   EXPECT_FALSE(AtomMatchesChar(true, 'd', 'a'));
 627   EXPECT_FALSE(AtomMatchesChar(true, 'd', '.'));
 628
 629   EXPECT_TRUE(AtomMatchesChar(true, 'd', '0'));
 630   EXPECT_TRUE(AtomMatchesChar(true, 'd', '9'));
 631 }
 632
 633 TEST(AtomMatchesCharTest, Escaped_D) {
 634   EXPECT_FALSE(AtomMatchesChar(true, 'D', '0'));
 635   EXPECT_FALSE(AtomMatchesChar(true, 'D', '9'));
 636
 637   EXPECT_TRUE(AtomMatchesChar(true, 'D', '\0'));
 638   EXPECT_TRUE(AtomMatchesChar(true, 'D', 'a'));
 639   EXPECT_TRUE(AtomMatchesChar(true, 'D', '-'));
 640 }
 641
 642 TEST(AtomMatchesCharTest, Escaped_s) {
 643   EXPECT_FALSE(AtomMatchesChar(true, 's', '\0'));
 644   EXPECT_FALSE(AtomMatchesChar(true, 's', 'a'));
 645   EXPECT_FALSE(AtomMatchesChar(true, 's', '.'));
 646   EXPECT_FALSE(AtomMatchesChar(true, 's', '9'));
 647
 648   EXPECT_TRUE(AtomMatchesChar(true, 's', ' '));
 649   EXPECT_TRUE(AtomMatchesChar(true, 's', '\n'));
 650   EXPECT_TRUE(AtomMatchesChar(true, 's', '\t'));
 651 }
 652
 653 TEST(AtomMatchesCharTest, Escaped_S) {
 654   EXPECT_FALSE(AtomMatchesChar(true, 'S', ' '));
 655   EXPECT_FALSE(AtomMatchesChar(true, 'S', '\r'));
 656
 657   EXPECT_TRUE(AtomMatchesChar(true, 'S', '\0'));
 658   EXPECT_TRUE(AtomMatchesChar(true, 'S', 'a'));
 659   EXPECT_TRUE(AtomMatchesChar(true, 'S', '9'));
 660 }
 661
 662 TEST(AtomMatchesCharTest, Escaped_w) {
 663   EXPECT_FALSE(AtomMatchesChar(true, 'w', '\0'));
 664   EXPECT_FALSE(AtomMatchesChar(true, 'w', '+'));
 665   EXPECT_FALSE(AtomMatchesChar(true, 'w', ' '));
 666   EXPECT_FALSE(AtomMatchesChar(true, 'w', '\n'));
 667
 668   EXPECT_TRUE(AtomMatchesChar(true, 'w', '0'));
 669   EXPECT_TRUE(AtomMatchesChar(true, 'w', 'b'));
 670   EXPECT_TRUE(AtomMatchesChar(true, 'w', 'C'));
 671   EXPECT_TRUE(AtomMatchesChar(true, 'w', '_'));
 672 }
 673
 674 TEST(AtomMatchesCharTest, Escaped_W) {
 675   EXPECT_FALSE(AtomMatchesChar(true, 'W', 'A'));
 676   EXPECT_FALSE(AtomMatchesChar(true, 'W', 'b'));
 677   EXPECT_FALSE(AtomMatchesChar(true, 'W', '9'));
 678   EXPECT_FALSE(AtomMatchesChar(true, 'W', '_'));
 679
 680   EXPECT_TRUE(AtomMatchesChar(true, 'W', '\0'));
 681   EXPECT_TRUE(AtomMatchesChar(true, 'W', '*'));
 682   EXPECT_TRUE(AtomMatchesChar(true, 'W', '\n'));
 683 }
 684
 685 TEST(AtomMatchesCharTest, EscapedWhiteSpace) {
 686   EXPECT_FALSE(AtomMatchesChar(true, 'f', '\0'));
 687   EXPECT_FALSE(AtomMatchesChar(true, 'f', '\n'));
 688   EXPECT_FALSE(AtomMatchesChar(true, 'n', '\0'));
 689   EXPECT_FALSE(AtomMatchesChar(true, 'n', '\r'));
 690   EXPECT_FALSE(AtomMatchesChar(true, 'r', '\0'));
 691   EXPECT_FALSE(AtomMatchesChar(true, 'r', 'a'));
 692   EXPECT_FALSE(AtomMatchesChar(true, 't', '\0'));
 693   EXPECT_FALSE(AtomMatchesChar(true, 't', 't'));
 694   EXPECT_FALSE(AtomMatchesChar(true, 'v', '\0'));
 695   EXPECT_FALSE(AtomMatchesChar(true, 'v', '\f'));
 696
 697   EXPECT_TRUE(AtomMatchesChar(true, 'f', '\f'));
 698   EXPECT_TRUE(AtomMatchesChar(true, 'n', '\n'));
 699   EXPECT_TRUE(AtomMatchesChar(true, 'r', '\r'));
 700   EXPECT_TRUE(AtomMatchesChar(true, 't', '\t'));
 701   EXPECT_TRUE(AtomMatchesChar(true, 'v', '\v'));
 702 }
 703
 704 TEST(AtomMatchesCharTest, UnescapedDot) {
 705   EXPECT_FALSE(AtomMatchesChar(false, '.', '\n'));
 706
 707   EXPECT_TRUE(AtomMatchesChar(false, '.', '\0'));
 708   EXPECT_TRUE(AtomMatchesChar(false, '.', '.'));
 709   EXPECT_TRUE(AtomMatchesChar(false, '.', 'a'));
 710   EXPECT_TRUE(AtomMatchesChar(false, '.', ' '));
 711 }
 712
 713 TEST(AtomMatchesCharTest, UnescapedChar) {
 714   EXPECT_FALSE(AtomMatchesChar(false, 'a', '\0'));
 715   EXPECT_FALSE(AtomMatchesChar(false, 'a', 'b'));
 716   EXPECT_FALSE(AtomMatchesChar(false, '$', 'a'));
 717
 718   EXPECT_TRUE(AtomMatchesChar(false, '$', '$'));
 719   EXPECT_TRUE(AtomMatchesChar(false, '5', '5'));
 720   EXPECT_TRUE(AtomMatchesChar(false, 'Z', 'Z'));
 721 }
 722
 723 TEST(ValidateRegexTest, GeneratesFailureAndReturnsFalseForInvalid) {
 724   EXPECT_NONFATAL_FAILURE(ASSERT_FALSE(ValidateRegex(NULL)),
 725                           "NULL is not a valid simple regular expression");
 726   EXPECT_NONFATAL_FAILURE(
 727       ASSERT_FALSE(ValidateRegex("a\\")),
 728       "Syntax error at index 1 in simple regular expression \"a\\\": ");
 729   EXPECT_NONFATAL_FAILURE(ASSERT_FALSE(ValidateRegex("a\\")),
 730                           "'\\' cannot appear at the end");
 731   EXPECT_NONFATAL_FAILURE(ASSERT_FALSE(ValidateRegex("\\n\\")),
 732                           "'\\' cannot appear at the end");
 733   EXPECT_NONFATAL_FAILURE(ASSERT_FALSE(ValidateRegex("\\s\\hb")),
 734                           "invalid escape sequence \"\\h\"");
 735   EXPECT_NONFATAL_FAILURE(ASSERT_FALSE(ValidateRegex("^^")),
 736                           "'^' can only appear at the beginning");
 737   EXPECT_NONFATAL_FAILURE(ASSERT_FALSE(ValidateRegex(".*^b")),
 738                           "'^' can only appear at the beginning");
 739   EXPECT_NONFATAL_FAILURE(ASSERT_FALSE(ValidateRegex("$$")),
 740                           "'$' can only appear at the end");
 741   EXPECT_NONFATAL_FAILURE(ASSERT_FALSE(ValidateRegex("^$a")),
 742                           "'$' can only appear at the end");
 743   EXPECT_NONFATAL_FAILURE(ASSERT_FALSE(ValidateRegex("a(b")),
 744                           "'(' is unsupported");
 745   EXPECT_NONFATAL_FAILURE(ASSERT_FALSE(ValidateRegex("ab)")),
 746                           "')' is unsupported");
 747   EXPECT_NONFATAL_FAILURE(ASSERT_FALSE(ValidateRegex("[ab")),
 748                           "'[' is unsupported");
 749   EXPECT_NONFATAL_FAILURE(ASSERT_FALSE(ValidateRegex("a{2")),
 750                           "'{' is unsupported");
 751   EXPECT_NONFATAL_FAILURE(ASSERT_FALSE(ValidateRegex("?")),
 752                           "'?' can only follow a repeatable token");
 753   EXPECT_NONFATAL_FAILURE(ASSERT_FALSE(ValidateRegex("^*")),
 754                           "'*' can only follow a repeatable token");
 755   EXPECT_NONFATAL_FAILURE(ASSERT_FALSE(ValidateRegex("5*+")),
 756                           "'+' can only follow a repeatable token");
 757 }
 758
 759 TEST(ValidateRegexTest, ReturnsTrueForValid) {
 760   EXPECT_TRUE(ValidateRegex(""));
 761   EXPECT_TRUE(ValidateRegex("a"));
 762   EXPECT_TRUE(ValidateRegex(".*"));
 763   EXPECT_TRUE(ValidateRegex("^a_+"));
 764   EXPECT_TRUE(ValidateRegex("^a\\t\\&?"));
 765   EXPECT_TRUE(ValidateRegex("09*$"));
 766   EXPECT_TRUE(ValidateRegex("^Z$"));
 767   EXPECT_TRUE(ValidateRegex("a\\^Z\\$\\(\\)\\|\\[\\]\\{\\}"));
 768 }
 769
 770 TEST(MatchRepetitionAndRegexAtHeadTest, WorksForZeroOrOne) {
 771   EXPECT_FALSE(MatchRepetitionAndRegexAtHead(false, 'a', '?', "a", "ba"));
 772   // Repeating more than once.
 773   EXPECT_FALSE(MatchRepetitionAndRegexAtHead(false, 'a', '?', "b", "aab"));
 774
 775   // Repeating zero times.
 776   EXPECT_TRUE(MatchRepetitionAndRegexAtHead(false, 'a', '?', "b", "ba"));
 777   // Repeating once.
 778   EXPECT_TRUE(MatchRepetitionAndRegexAtHead(false, 'a', '?', "b", "ab"));
 779   EXPECT_TRUE(MatchRepetitionAndRegexAtHead(false, '#', '?', ".", "##"));
 780 }
 781
 782 TEST(MatchRepetitionAndRegexAtHeadTest, WorksForZeroOrMany) {
 783   EXPECT_FALSE(MatchRepetitionAndRegexAtHead(false, '.', '*', "a$", "baab"));
 784
 785   // Repeating zero times.
 786   EXPECT_TRUE(MatchRepetitionAndRegexAtHead(false, '.', '*', "b", "bc"));
 787   // Repeating once.
 788   EXPECT_TRUE(MatchRepetitionAndRegexAtHead(false, '.', '*', "b", "abc"));
 789   // Repeating more than once.
 790   EXPECT_TRUE(MatchRepetitionAndRegexAtHead(true, 'w', '*', "-", "ab_1-g"));
 791 }
 792
 793 TEST(MatchRepetitionAndRegexAtHeadTest, WorksForOneOrMany) {
 794   EXPECT_FALSE(MatchRepetitionAndRegexAtHead(false, '.', '+', "a$", "baab"));
 795   // Repeating zero times.
 796   EXPECT_FALSE(MatchRepetitionAndRegexAtHead(false, '.', '+', "b", "bc"));
 797
 798   // Repeating once.
 799   EXPECT_TRUE(MatchRepetitionAndRegexAtHead(false, '.', '+', "b", "abc"));
 800   // Repeating more than once.
 801   EXPECT_TRUE(MatchRepetitionAndRegexAtHead(true, 'w', '+', "-", "ab_1-g"));
 802 }
 803
 804 TEST(MatchRegexAtHeadTest, ReturnsTrueForEmptyRegex) {
 805   EXPECT_TRUE(MatchRegexAtHead("", ""));
 806   EXPECT_TRUE(MatchRegexAtHead("", "ab"));
 807 }
 808
 809 TEST(MatchRegexAtHeadTest, WorksWhenDollarIsInRegex) {
 810   EXPECT_FALSE(MatchRegexAtHead("$", "a"));
 811
 812   EXPECT_TRUE(MatchRegexAtHead("$", ""));
 813   EXPECT_TRUE(MatchRegexAtHead("a$", "a"));
 814 }
 815
 816 TEST(MatchRegexAtHeadTest, WorksWhenRegexStartsWithEscapeSequence) {
 817   EXPECT_FALSE(MatchRegexAtHead("\\w", "+"));
 818   EXPECT_FALSE(MatchRegexAtHead("\\W", "ab"));
 819
 820   EXPECT_TRUE(MatchRegexAtHead("\\sa", "\nab"));
 821   EXPECT_TRUE(MatchRegexAtHead("\\d", "1a"));
 822 }
 823
 824 TEST(MatchRegexAtHeadTest, WorksWhenRegexStartsWithRepetition) {
 825   EXPECT_FALSE(MatchRegexAtHead(".+a", "abc"));
 826   EXPECT_FALSE(MatchRegexAtHead("a?b", "aab"));
 827
 828   EXPECT_TRUE(MatchRegexAtHead(".*a", "bc12-ab"));
 829   EXPECT_TRUE(MatchRegexAtHead("a?b", "b"));
 830   EXPECT_TRUE(MatchRegexAtHead("a?b", "ab"));
 831 }
 832
 833 TEST(MatchRegexAtHeadTest,
 834      WorksWhenRegexStartsWithRepetionOfEscapeSequence) {
 835   EXPECT_FALSE(MatchRegexAtHead("\\.+a", "abc"));
 836   EXPECT_FALSE(MatchRegexAtHead("\\s?b", "  b"));
 837
 838   EXPECT_TRUE(MatchRegexAtHead("\\(*a", "((((ab"));
 839   EXPECT_TRUE(MatchRegexAtHead("\\^?b", "^b"));
 840   EXPECT_TRUE(MatchRegexAtHead("\\\\?b", "b"));
 841   EXPECT_TRUE(MatchRegexAtHead("\\\\?b", "\\b"));
 842 }
 843
 844 TEST(MatchRegexAtHeadTest, MatchesSequentially) {
 845   EXPECT_FALSE(MatchRegexAtHead("ab.*c", "acabc"));
 846
 847   EXPECT_TRUE(MatchRegexAtHead("ab.*c", "ab-fsc"));
 848 }
 849
 850 TEST(MatchRegexAnywhereTest, ReturnsFalseWhenStringIsNull) {
 851   EXPECT_FALSE(MatchRegexAnywhere("", NULL));
 852 }
 853
 854 TEST(MatchRegexAnywhereTest, WorksWhenRegexStartsWithCaret) {
 855   EXPECT_FALSE(MatchRegexAnywhere("^a", "ba"));
 856   EXPECT_FALSE(MatchRegexAnywhere("^$", "a"));
 857
 858   EXPECT_TRUE(MatchRegexAnywhere("^a", "ab"));
 859   EXPECT_TRUE(MatchRegexAnywhere("^", "ab"));
 860   EXPECT_TRUE(MatchRegexAnywhere("^$", ""));
 861 }
 862
 863 TEST(MatchRegexAnywhereTest, ReturnsFalseWhenNoMatch) {
 864   EXPECT_FALSE(MatchRegexAnywhere("a", "bcde123"));
 865   EXPECT_FALSE(MatchRegexAnywhere("a.+a", "--aa88888888"));
 866 }
 867
 868 TEST(MatchRegexAnywhereTest, ReturnsTrueWhenMatchingPrefix) {
 869   EXPECT_TRUE(MatchRegexAnywhere("\\w+", "ab1_ - 5"));
 870   EXPECT_TRUE(MatchRegexAnywhere(".*=", "="));
 871   EXPECT_TRUE(MatchRegexAnywhere("x.*ab?.*bc", "xaaabc"));
 872 }
 873
 874 TEST(MatchRegexAnywhereTest, ReturnsTrueWhenMatchingNonPrefix) {
 875   EXPECT_TRUE(MatchRegexAnywhere("\\w+", "$$$ ab1_ - 5"));
 876   EXPECT_TRUE(MatchRegexAnywhere("\\.+=", "=  ...="));
 877 }
 878
 879 // Tests RE's implicit constructors.
 880 TEST(RETest, ImplicitConstructorWorks) {
 881   const RE empty("");
 882   EXPECT_STREQ("", empty.pattern());
 883
 884   const RE simple("hello");
 885   EXPECT_STREQ("hello", simple.pattern());
 886 }
 887
 888 // Tests that RE's constructors reject invalid regular expressions.
 889 TEST(RETest, RejectsInvalidRegex) {
 890   EXPECT_NONFATAL_FAILURE({
 891     const RE normal(NULL);
 892   }, "NULL is not a valid simple regular expression");
 893
 894   EXPECT_NONFATAL_FAILURE({
 895     const RE normal(".*(\\w+");
 896   }, "'(' is unsupported");
 897
 898   EXPECT_NONFATAL_FAILURE({
 899     const RE invalid("^?");
 900   }, "'?' can only follow a repeatable token");
 901 }
 902
 903 // Tests RE::FullMatch().
 904 TEST(RETest, FullMatchWorks) {
 905   const RE empty("");
 906   EXPECT_TRUE(RE::FullMatch("", empty));
 907   EXPECT_FALSE(RE::FullMatch("a", empty));
 908
 909   const RE re1("a");
 910   EXPECT_TRUE(RE::FullMatch("a", re1));
 911
 912   const RE re("a.*z");
 913   EXPECT_TRUE(RE::FullMatch("az", re));
 914   EXPECT_TRUE(RE::FullMatch("axyz", re));
 915   EXPECT_FALSE(RE::FullMatch("baz", re));
 916   EXPECT_FALSE(RE::FullMatch("azy", re));
 917 }
 918
 919 // Tests RE::PartialMatch().
 920 TEST(RETest, PartialMatchWorks) {
 921   const RE empty("");
 922   EXPECT_TRUE(RE::PartialMatch("", empty));
 923   EXPECT_TRUE(RE::PartialMatch("a", empty));
 924
 925   const RE re("a.*z");
 926   EXPECT_TRUE(RE::PartialMatch("az", re));
 927   EXPECT_TRUE(RE::PartialMatch("axyz", re));
 928   EXPECT_TRUE(RE::PartialMatch("baz", re));
 929   EXPECT_TRUE(RE::PartialMatch("azy", re));
 930   EXPECT_FALSE(RE::PartialMatch("zza", re));
 931 }
 932
 933 #endif  // GTEST_USES_POSIX_RE
 934
 935 #if !GTEST_OS_WINDOWS_MOBILE
 936
 937 TEST(CaptureTest, CapturesStdout) {
 938   CaptureStdout();
 939   fprintf(stdout, "abc");
 940   EXPECT_STREQ("abc", GetCapturedStdout().c_str());
 941
 942   CaptureStdout();
 943   fprintf(stdout, "def%cghi", '\0');
 944   EXPECT_EQ(::std::string("def\0ghi", 7), ::std::string(GetCapturedStdout()));
 945 }
 946
 947 TEST(CaptureTest, CapturesStderr) {
 948   CaptureStderr();
 949   fprintf(stderr, "jkl");
 950   EXPECT_STREQ("jkl", GetCapturedStderr().c_str());
 951
 952   CaptureStderr();
 953   fprintf(stderr, "jkl%cmno", '\0');
 954   EXPECT_EQ(::std::string("jkl\0mno", 7), ::std::string(GetCapturedStderr()));
 955 }
 956
 957 // Tests that stdout and stderr capture don't interfere with each other.
 958 TEST(CaptureTest, CapturesStdoutAndStderr) {
 959   CaptureStdout();
 960   CaptureStderr();
 961   fprintf(stdout, "pqr");
 962   fprintf(stderr, "stu");
 963   EXPECT_STREQ("pqr", GetCapturedStdout().c_str());
 964   EXPECT_STREQ("stu", GetCapturedStderr().c_str());
 965 }
 966
 967 TEST(CaptureDeathTest, CannotReenterStdoutCapture) {
 968   CaptureStdout();
 969   EXPECT_DEATH_IF_SUPPORTED(CaptureStdout(),
 970                             "Only one stdout capturer can exist at a time");
 971   GetCapturedStdout();
 972
 973   // We cannot test stderr capturing using death tests as they use it
 974   // themselves.
 975 }
 976
 977 #endif  // !GTEST_OS_WINDOWS_MOBILE
 978
 979 TEST(ThreadLocalTest, DefaultConstructorInitializesToDefaultValues) {
 980   ThreadLocal<int> t1;
 981   EXPECT_EQ(0, t1.get());
 982
 983   ThreadLocal<void*> t2;
 984   EXPECT_TRUE(t2.get() == NULL);
 985 }
 986
 987 TEST(ThreadLocalTest, SingleParamConstructorInitializesToParam) {
 988   ThreadLocal<int> t1(123);
 989   EXPECT_EQ(123, t1.get());
 990
 991   int i = 0;
 992   ThreadLocal<int*> t2(&i);
 993   EXPECT_EQ(&i, t2.get());
 994 }
 995
 996 class NoDefaultContructor {
 997  public:
 998   explicit NoDefaultContructor(const char*) {}
 999   NoDefaultContructor(const NoDefaultContructor&) {}
1000 };
1001
1002 TEST(ThreadLocalTest, ValueDefaultContructorIsNotRequiredForParamVersion) {
1003   ThreadLocal<NoDefaultContructor> bar(NoDefaultContructor("foo"));
1004   bar.pointer();
1005 }
1006
1007 TEST(ThreadLocalTest, GetAndPointerReturnSameValue) {
1008   ThreadLocal<std::string> thread_local_string;
1009
1010   EXPECT_EQ(thread_local_string.pointer(), &(thread_local_string.get()));
1011
1012   // Verifies the condition still holds after calling set.
1013   thread_local_string.set("foo");
1014   EXPECT_EQ(thread_local_string.pointer(), &(thread_local_string.get()));
1015 }
1016
1017 TEST(ThreadLocalTest, PointerAndConstPointerReturnSameValue) {
1018   ThreadLocal<std::string> thread_local_string;
1019   const ThreadLocal<std::string>& const_thread_local_string =
1020       thread_local_string;
1021
1022   EXPECT_EQ(thread_local_string.pointer(), const_thread_local_string.pointer());
1023
1024   thread_local_string.set("foo");
1025   EXPECT_EQ(thread_local_string.pointer(), const_thread_local_string.pointer());
1026 }
1027
1028 #if GTEST_IS_THREADSAFE
1029
1030 void AddTwo(int* param) { *param += 2; }
1031
1032 TEST(ThreadWithParamTest, ConstructorExecutesThreadFunc) {
1033   int i = 40;
1034   ThreadWithParam<int*> thread(&AddTwo, &i, NULL);
1035   thread.Join();
1036   EXPECT_EQ(42, i);
1037 }
1038
1039 TEST(MutexDeathTest, AssertHeldShouldAssertWhenNotLocked) {
1040   // AssertHeld() is flaky only in the presence of multiple threads accessing
1041   // the lock. In this case, the test is robust.
1042   EXPECT_DEATH_IF_SUPPORTED({
1043     Mutex m;
1044     { MutexLock lock(&m); }
1045     m.AssertHeld();
1046   },
1047   "thread .*hold");
1048 }
1049
1050 TEST(MutexTest, AssertHeldShouldNotAssertWhenLocked) {
1051   Mutex m;
1052   MutexLock lock(&m);
1053   m.AssertHeld();
1054 }
1055
1056 class AtomicCounterWithMutex {
1057  public:
1058   explicit AtomicCounterWithMutex(Mutex* mutex) :
1059     value_(0), mutex_(mutex), random_(42) {}
1060
1061   void Increment() {
1062     MutexLock lock(mutex_);
1063     int temp = value_;
1064     {
1065       // Locking a mutex puts up a memory barrier, preventing reads and
1066       // writes to value_ rearranged when observed from other threads.
1067       //
1068       // We cannot use Mutex and MutexLock here or rely on their memory
1069       // barrier functionality as we are testing them here.
1070       pthread_mutex_t memory_barrier_mutex;
1071       GTEST_CHECK_POSIX_SUCCESS_(
1072           pthread_mutex_init(&memory_barrier_mutex, NULL));
1073       GTEST_CHECK_POSIX_SUCCESS_(pthread_mutex_lock(&memory_barrier_mutex));
1074
1075       SleepMilliseconds(random_.Generate(30));
1076
1077       GTEST_CHECK_POSIX_SUCCESS_(pthread_mutex_unlock(&memory_barrier_mutex));
1078       GTEST_CHECK_POSIX_SUCCESS_(pthread_mutex_destroy(&memory_barrier_mutex));
1079     }
1080     value_ = temp + 1;
1081   }
1082   int value() const { return value_; }
1083
1084  private:
1085   volatile int value_;
1086   Mutex* const mutex_;  // Protects value_.
1087   Random       random_;
1088 };
1089
1090 void CountingThreadFunc(pair<AtomicCounterWithMutex*, int> param) {
1091   for (int i = 0; i < param.second; ++i)
1092       param.first->Increment();
1093 }
1094
1095 // Tests that the mutex only lets one thread at a time to lock it.
1096 TEST(MutexTest, OnlyOneThreadCanLockAtATime) {
1097   Mutex mutex;
1098   AtomicCounterWithMutex locked_counter(&mutex);
1099
1100   typedef ThreadWithParam<pair<AtomicCounterWithMutex*, int> > ThreadType;
1101   const int kCycleCount = 20;
1102   const int kThreadCount = 7;
1103   scoped_ptr<ThreadType> counting_threads[kThreadCount];
1104   Notification threads_can_start;
1105   // Creates and runs kThreadCount threads that increment locked_counter
1106   // kCycleCount times each.
1107   for (int i = 0; i < kThreadCount; ++i) {
1108     counting_threads[i].reset(new ThreadType(&CountingThreadFunc,
1109                                              make_pair(&locked_counter,
1110                                                        kCycleCount),
1111                                              &threads_can_start));
1112   }
1113   threads_can_start.Notify();
1114   for (int i = 0; i < kThreadCount; ++i)
1115     counting_threads[i]->Join();
1116
1117   // If the mutex lets more than one thread to increment the counter at a
1118   // time, they are likely to encounter a race condition and have some
1119   // increments overwritten, resulting in the lower then expected counter
1120   // value.
1121   EXPECT_EQ(kCycleCount * kThreadCount, locked_counter.value());
1122 }
1123
1124 template <typename T>
1125 void RunFromThread(void (func)(T), T param) {
1126   ThreadWithParam<T> thread(func, param, NULL);
1127   thread.Join();
1128 }
1129
1130 void RetrieveThreadLocalValue(
1131     pair<ThreadLocal<std::string>*, std::string*> param) {
1132   *param.second = param.first->get();
1133 }
1134
1135 TEST(ThreadLocalTest, ParameterizedConstructorSetsDefault) {
1136   ThreadLocal<std::string> thread_local_string("foo");
1137   EXPECT_STREQ("foo", thread_local_string.get().c_str());
1138
1139   thread_local_string.set("bar");
1140   EXPECT_STREQ("bar", thread_local_string.get().c_str());
1141
1142   std::string result;
1143   RunFromThread(&RetrieveThreadLocalValue,
1144                 make_pair(&thread_local_string, &result));
1145   EXPECT_STREQ("foo", result.c_str());
1146 }
1147
1148 // DestructorTracker keeps track of whether its instances have been
1149 // destroyed.
1150 static std::vector<bool> g_destroyed;
1151
1152 class DestructorTracker {
1153  public:
1154   DestructorTracker() : index_(GetNewIndex()) {}
1155   DestructorTracker(const DestructorTracker& /* rhs */)
1156       : index_(GetNewIndex()) {}
1157   ~DestructorTracker() {
1158     // We never access g_destroyed concurrently, so we don't need to
1159     // protect the write operation under a mutex.
1160     g_destroyed[index_] = true;
1161   }
1162
1163  private:
1164   static int GetNewIndex() {
1165     g_destroyed.push_back(false);
1166     return g_destroyed.size() - 1;
1167   }
1168   const int index_;
1169 };
1170
1171 typedef ThreadLocal<DestructorTracker>* ThreadParam;
1172
1173 void CallThreadLocalGet(ThreadParam thread_local_param) {
1174   thread_local_param->get();
1175 }
1176
1177 // Tests that when a ThreadLocal object dies in a thread, it destroys
1178 // the managed object for that thread.
1179 TEST(ThreadLocalTest, DestroysManagedObjectForOwnThreadWhenDying) {
1180   g_destroyed.clear();
1181
1182   {
1183     // The next line default constructs a DestructorTracker object as
1184     // the default value of objects managed by thread_local_tracker.
1185     ThreadLocal<DestructorTracker> thread_local_tracker;
1186     ASSERT_EQ(1U, g_destroyed.size());
1187     ASSERT_FALSE(g_destroyed[0]);
1188
1189     // This creates another DestructorTracker object for the main thread.
1190     thread_local_tracker.get();
1191     ASSERT_EQ(2U, g_destroyed.size());
1192     ASSERT_FALSE(g_destroyed[0]);
1193     ASSERT_FALSE(g_destroyed[1]);
1194   }
1195
1196   // Now thread_local_tracker has died.  It should have destroyed both the
1197   // default value shared by all threads and the value for the main
1198   // thread.
1199   ASSERT_EQ(2U, g_destroyed.size());
1200   EXPECT_TRUE(g_destroyed[0]);
1201   EXPECT_TRUE(g_destroyed[1]);
1202
1203   g_destroyed.clear();
1204 }
1205
1206 // Tests that when a thread exits, the thread-local object for that
1207 // thread is destroyed.
1208 TEST(ThreadLocalTest, DestroysManagedObjectAtThreadExit) {
1209   g_destroyed.clear();
1210
1211   {
1212     // The next line default constructs a DestructorTracker object as
1213     // the default value of objects managed by thread_local_tracker.
1214     ThreadLocal<DestructorTracker> thread_local_tracker;
1215     ASSERT_EQ(1U, g_destroyed.size());
1216     ASSERT_FALSE(g_destroyed[0]);
1217
1218     // This creates another DestructorTracker object in the new thread.
1219     ThreadWithParam<ThreadParam> thread(
1220         &CallThreadLocalGet, &thread_local_tracker, NULL);
1221     thread.Join();
1222
1223     // Now the new thread has exited.  The per-thread object for it
1224     // should have been destroyed.
1225     ASSERT_EQ(2U, g_destroyed.size());
1226     ASSERT_FALSE(g_destroyed[0]);
1227     ASSERT_TRUE(g_destroyed[1]);
1228   }
1229
1230   // Now thread_local_tracker has died.  The default value should have been
1231   // destroyed too.
1232   ASSERT_EQ(2U, g_destroyed.size());
1233   EXPECT_TRUE(g_destroyed[0]);
1234   EXPECT_TRUE(g_destroyed[1]);
1235
1236   g_destroyed.clear();
1237 }
1238
1239 TEST(ThreadLocalTest, ThreadLocalMutationsAffectOnlyCurrentThread) {
1240   ThreadLocal<std::string> thread_local_string;
1241   thread_local_string.set("Foo");
1242   EXPECT_STREQ("Foo", thread_local_string.get().c_str());
1243
1244   std::string result;
1245   RunFromThread(&RetrieveThreadLocalValue,
1246                 make_pair(&thread_local_string, &result));
1247   EXPECT_TRUE(result.empty());
1248 }
1249
1250 #endif  // GTEST_IS_THREADSAFE
1251
1252 }  // namespace internal
1253 }  // namespace testing