The Tor Browser: media/webrtc/trunk/testing/gtest/test/gtest-port

media/webrtc/trunk/testing/gtest/test/gtest-port_test.cc@6474c204b198 (annotated)

media/webrtc/trunk/testing/gtest/test/gtest-port_test.cc

Wed, 31 Dec 2014 06:09:35 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Wed, 31 Dec 2014 06:09:35 +0100
changeset 0: 6474c204b198
permissions: -rw-r--r--

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

 // Copyright 2008, Google Inc.
 // All rights reserved.
 //
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 // notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 // copyright notice, this list of conditions and the following disclaimer
 // in the documentation and/or other materials provided with the
 // distribution.
 //     * Neither the name of Google Inc. nor the names of its
 // contributors may be used to endorse or promote products derived from
 // this software without specific prior written permission.
 //
 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 //
 // Authors: vladl@google.com (Vlad Losev), wan@google.com (Zhanyong Wan)
 //
 // This file tests the internal cross-platform support utilities.
 #include "gtest/internal/gtest-port.h"
 #include <stdio.h>
 #if GTEST_OS_MAC
 # include <time.h>
 #endif  // GTEST_OS_MAC
 #include <list>
 #include <utility>  // For std::pair and std::make_pair.
 #include <vector>
 #include "gtest/gtest.h"
 #include "gtest/gtest-spi.h"
 // Indicates that this translation unit is part of Google Test's
 // implementation.  It must come before gtest-internal-inl.h is
 // included, or there will be a compiler error.  This trick is to
 // prevent a user from accidentally including gtest-internal-inl.h in
 // his code.
 #define GTEST_IMPLEMENTATION_ 1
 #include "src/gtest-internal-inl.h"
 #undef GTEST_IMPLEMENTATION_
 using std::make_pair;
 using std::pair;
 namespace testing {
 namespace internal {
 TEST(IsXDigitTest, WorksForNarrowAscii) {
   EXPECT_TRUE(IsXDigit('0'));
   EXPECT_TRUE(IsXDigit('9'));
   EXPECT_TRUE(IsXDigit('A'));
   EXPECT_TRUE(IsXDigit('F'));
   EXPECT_TRUE(IsXDigit('a'));
   EXPECT_TRUE(IsXDigit('f'));
   EXPECT_FALSE(IsXDigit('-'));
   EXPECT_FALSE(IsXDigit('g'));
   EXPECT_FALSE(IsXDigit('G'));
 }
 TEST(IsXDigitTest, ReturnsFalseForNarrowNonAscii) {
   EXPECT_FALSE(IsXDigit(static_cast<char>(0x80)));
   EXPECT_FALSE(IsXDigit(static_cast<char>('0' | 0x80)));
 }
 TEST(IsXDigitTest, WorksForWideAscii) {
   EXPECT_TRUE(IsXDigit(L'0'));
   EXPECT_TRUE(IsXDigit(L'9'));
   EXPECT_TRUE(IsXDigit(L'A'));
   EXPECT_TRUE(IsXDigit(L'F'));
   EXPECT_TRUE(IsXDigit(L'a'));
   EXPECT_TRUE(IsXDigit(L'f'));
   EXPECT_FALSE(IsXDigit(L'-'));
   EXPECT_FALSE(IsXDigit(L'g'));
   EXPECT_FALSE(IsXDigit(L'G'));
 }
 TEST(IsXDigitTest, ReturnsFalseForWideNonAscii) {
   EXPECT_FALSE(IsXDigit(static_cast<wchar_t>(0x80)));
   EXPECT_FALSE(IsXDigit(static_cast<wchar_t>(L'0' | 0x80)));
   EXPECT_FALSE(IsXDigit(static_cast<wchar_t>(L'0' | 0x100)));
 }
 class Base {
  public:
   // Copy constructor and assignment operator do exactly what we need, so we
   // use them.
   Base() : member_(0) {}
   explicit Base(int n) : member_(n) {}
   virtual ~Base() {}
   int member() { return member_; }
  private:
   int member_;
 };
 class Derived : public Base {
  public:
   explicit Derived(int n) : Base(n) {}
 };
 TEST(ImplicitCastTest, ConvertsPointers) {
   Derived derived(0);
   EXPECT_TRUE(&derived == ::testing::internal::ImplicitCast_<Base*>(&derived));
 }
 TEST(ImplicitCastTest, CanUseInheritance) {
   Derived derived(1);
   Base base = ::testing::internal::ImplicitCast_<Base>(derived);
   EXPECT_EQ(derived.member(), base.member());
 }
 class Castable {
  public:
   explicit Castable(bool* converted) : converted_(converted) {}
   operator Base() {
     *converted_ = true;
     return Base();
   }
  private:
   bool* converted_;
 };
 TEST(ImplicitCastTest, CanUseNonConstCastOperator) {
   bool converted = false;
   Castable castable(&converted);
   Base base = ::testing::internal::ImplicitCast_<Base>(castable);
   EXPECT_TRUE(converted);
 }
 class ConstCastable {
  public:
   explicit ConstCastable(bool* converted) : converted_(converted) {}
   operator Base() const {
     *converted_ = true;
     return Base();
   }
  private:
   bool* converted_;
 };
 TEST(ImplicitCastTest, CanUseConstCastOperatorOnConstValues) {
   bool converted = false;
   const ConstCastable const_castable(&converted);
   Base base = ::testing::internal::ImplicitCast_<Base>(const_castable);
   EXPECT_TRUE(converted);
 }
 class ConstAndNonConstCastable {
  public:
   ConstAndNonConstCastable(bool* converted, bool* const_converted)
       : converted_(converted), const_converted_(const_converted) {}
   operator Base() {
     *converted_ = true;
     return Base();
   }
   operator Base() const {
     *const_converted_ = true;
     return Base();
   }
  private:
   bool* converted_;
   bool* const_converted_;
 };
 TEST(ImplicitCastTest, CanSelectBetweenConstAndNonConstCasrAppropriately) {
   bool converted = false;
   bool const_converted = false;
   ConstAndNonConstCastable castable(&converted, &const_converted);
   Base base = ::testing::internal::ImplicitCast_<Base>(castable);
   EXPECT_TRUE(converted);
   EXPECT_FALSE(const_converted);
   converted = false;
   const_converted = false;
   const ConstAndNonConstCastable const_castable(&converted, &const_converted);
   base = ::testing::internal::ImplicitCast_<Base>(const_castable);
   EXPECT_FALSE(converted);
   EXPECT_TRUE(const_converted);
 }
 class To {
  public:
   To(bool* converted) { *converted = true; }  // NOLINT
 };
 TEST(ImplicitCastTest, CanUseImplicitConstructor) {
   bool converted = false;
   To to = ::testing::internal::ImplicitCast_<To>(&converted);
   (void)to;
   EXPECT_TRUE(converted);
 }
 TEST(IteratorTraitsTest, WorksForSTLContainerIterators) {
   StaticAssertTypeEq<int,
       IteratorTraits< ::std::vector<int>::const_iterator>::value_type>();
   StaticAssertTypeEq<bool,
       IteratorTraits< ::std::list<bool>::iterator>::value_type>();
 }
 TEST(IteratorTraitsTest, WorksForPointerToNonConst) {
   StaticAssertTypeEq<char, IteratorTraits<char*>::value_type>();
   StaticAssertTypeEq<const void*, IteratorTraits<const void**>::value_type>();
 }
 TEST(IteratorTraitsTest, WorksForPointerToConst) {
   StaticAssertTypeEq<char, IteratorTraits<const char*>::value_type>();
   StaticAssertTypeEq<const void*,
       IteratorTraits<const void* const*>::value_type>();
 }
 // Tests that the element_type typedef is available in scoped_ptr and refers
 // to the parameter type.
 TEST(ScopedPtrTest, DefinesElementType) {
   StaticAssertTypeEq<int, ::testing::internal::scoped_ptr<int>::element_type>();
 }
 // TODO(vladl@google.com): Implement THE REST of scoped_ptr tests.
 TEST(GtestCheckSyntaxTest, BehavesLikeASingleStatement) {
   if (AlwaysFalse())
     GTEST_CHECK_(false) << "This should never be executed; "
                            "It's a compilation test only.";
   if (AlwaysTrue())
     GTEST_CHECK_(true);
   else
     ;  // NOLINT
   if (AlwaysFalse())
     ;  // NOLINT
   else
     GTEST_CHECK_(true) << "";
 }
 TEST(GtestCheckSyntaxTest, WorksWithSwitch) {
   switch (0) {
     case 1:
       break;
     default:
       GTEST_CHECK_(true);
   }
   switch (0)
     case 0:
       GTEST_CHECK_(true) << "Check failed in switch case";
 }
 // Verifies behavior of FormatFileLocation.
 TEST(FormatFileLocationTest, FormatsFileLocation) {
   EXPECT_PRED_FORMAT2(IsSubstring, "foo.cc", FormatFileLocation("foo.cc", 42));
   EXPECT_PRED_FORMAT2(IsSubstring, "42", FormatFileLocation("foo.cc", 42));
 }
 TEST(FormatFileLocationTest, FormatsUnknownFile) {
   EXPECT_PRED_FORMAT2(
       IsSubstring, "unknown file", FormatFileLocation(NULL, 42));
   EXPECT_PRED_FORMAT2(IsSubstring, "42", FormatFileLocation(NULL, 42));
 }
 TEST(FormatFileLocationTest, FormatsUknownLine) {
   EXPECT_EQ("foo.cc:", FormatFileLocation("foo.cc", -1));
 }
 TEST(FormatFileLocationTest, FormatsUknownFileAndLine) {
   EXPECT_EQ("unknown file:", FormatFileLocation(NULL, -1));
 }
 // Verifies behavior of FormatCompilerIndependentFileLocation.
 TEST(FormatCompilerIndependentFileLocationTest, FormatsFileLocation) {
   EXPECT_EQ("foo.cc:42", FormatCompilerIndependentFileLocation("foo.cc", 42));
 }
 TEST(FormatCompilerIndependentFileLocationTest, FormatsUknownFile) {
   EXPECT_EQ("unknown file:42",
             FormatCompilerIndependentFileLocation(NULL, 42));
 }
 TEST(FormatCompilerIndependentFileLocationTest, FormatsUknownLine) {
   EXPECT_EQ("foo.cc", FormatCompilerIndependentFileLocation("foo.cc", -1));
 }
 TEST(FormatCompilerIndependentFileLocationTest, FormatsUknownFileAndLine) {
   EXPECT_EQ("unknown file", FormatCompilerIndependentFileLocation(NULL, -1));
 }
 #if GTEST_OS_MAC || GTEST_OS_QNX
 void* ThreadFunc(void* data) {
   pthread_mutex_t* mutex = static_cast<pthread_mutex_t*>(data);
   pthread_mutex_lock(mutex);
   pthread_mutex_unlock(mutex);
   return NULL;
 }
 TEST(GetThreadCountTest, ReturnsCorrectValue) {
   EXPECT_EQ(1U, GetThreadCount());
   pthread_mutex_t mutex;
   pthread_attr_t  attr;
   pthread_t       thread_id;
   // TODO(vladl@google.com): turn mutex into internal::Mutex for automatic
   // destruction.
   pthread_mutex_init(&mutex, NULL);
   pthread_mutex_lock(&mutex);
   ASSERT_EQ(0, pthread_attr_init(&attr));
   ASSERT_EQ(0, pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_JOINABLE));
   const int status = pthread_create(&thread_id, &attr, &ThreadFunc, &mutex);
   ASSERT_EQ(0, pthread_attr_destroy(&attr));
   ASSERT_EQ(0, status);
   EXPECT_EQ(2U, GetThreadCount());
   pthread_mutex_unlock(&mutex);
   void* dummy;
   ASSERT_EQ(0, pthread_join(thread_id, &dummy));
 # if GTEST_OS_MAC
   // MacOS X may not immediately report the updated thread count after
   // joining a thread, causing flakiness in this test. To counter that, we
   // wait for up to .5 seconds for the OS to report the correct value.
   for (int i = 0; i < 5; ++i) {
     if (GetThreadCount() == 1)
       break;
     SleepMilliseconds(100);
   }
 # endif  // GTEST_OS_MAC
   EXPECT_EQ(1U, GetThreadCount());
   pthread_mutex_destroy(&mutex);
 }
 #else
 TEST(GetThreadCountTest, ReturnsZeroWhenUnableToCountThreads) {
   EXPECT_EQ(0U, GetThreadCount());
 }
 #endif  // GTEST_OS_MAC || GTEST_OS_QNX
 TEST(GtestCheckDeathTest, DiesWithCorrectOutputOnFailure) {
   const bool a_false_condition = false;
   const char regex[] =
 #ifdef _MSC_VER
      "gtest-port_test\\.cc\\(\\d+\\):"
 #elif GTEST_USES_POSIX_RE
      "gtest-port_test\\.cc:[0-9]+"
 #else
      "gtest-port_test\\.cc:\\d+"
 #endif  // _MSC_VER
      ".*a_false_condition.*Extra info.*";
   EXPECT_DEATH_IF_SUPPORTED(GTEST_CHECK_(a_false_condition) << "Extra info",
                             regex);
 }
 #if GTEST_HAS_DEATH_TEST
 TEST(GtestCheckDeathTest, LivesSilentlyOnSuccess) {
   EXPECT_EXIT({
       GTEST_CHECK_(true) << "Extra info";
       ::std::cerr << "Success\n";
       exit(0); },
       ::testing::ExitedWithCode(0), "Success");
 }
 #endif  // GTEST_HAS_DEATH_TEST
 // Verifies that Google Test choose regular expression engine appropriate to
 // the platform. The test will produce compiler errors in case of failure.
 // For simplicity, we only cover the most important platforms here.
 TEST(RegexEngineSelectionTest, SelectsCorrectRegexEngine) {
 #if GTEST_HAS_POSIX_RE
   EXPECT_TRUE(GTEST_USES_POSIX_RE);
 #else
   EXPECT_TRUE(GTEST_USES_SIMPLE_RE);
 #endif
 }
 #if GTEST_USES_POSIX_RE
 # if GTEST_HAS_TYPED_TEST
 template <typename Str>
 class RETest : public ::testing::Test {};
 // Defines StringTypes as the list of all string types that class RE
 // supports.
 typedef testing::Types<
     ::std::string,
 #  if GTEST_HAS_GLOBAL_STRING
     ::string,
 #  endif  // GTEST_HAS_GLOBAL_STRING
     const char*> StringTypes;
 TYPED_TEST_CASE(RETest, StringTypes);
 // Tests RE's implicit constructors.
 TYPED_TEST(RETest, ImplicitConstructorWorks) {
   const RE empty(TypeParam(""));
   EXPECT_STREQ("", empty.pattern());
   const RE simple(TypeParam("hello"));
   EXPECT_STREQ("hello", simple.pattern());
   const RE normal(TypeParam(".*(\\w+)"));
   EXPECT_STREQ(".*(\\w+)", normal.pattern());
 }
 // Tests that RE's constructors reject invalid regular expressions.
 TYPED_TEST(RETest, RejectsInvalidRegex) {
   EXPECT_NONFATAL_FAILURE({
     const RE invalid(TypeParam("?"));
   }, "\"?\" is not a valid POSIX Extended regular expression.");
 }
 // Tests RE::FullMatch().
 TYPED_TEST(RETest, FullMatchWorks) {
   const RE empty(TypeParam(""));
   EXPECT_TRUE(RE::FullMatch(TypeParam(""), empty));
   EXPECT_FALSE(RE::FullMatch(TypeParam("a"), empty));
   const RE re(TypeParam("a.*z"));
   EXPECT_TRUE(RE::FullMatch(TypeParam("az"), re));
   EXPECT_TRUE(RE::FullMatch(TypeParam("axyz"), re));
   EXPECT_FALSE(RE::FullMatch(TypeParam("baz"), re));
   EXPECT_FALSE(RE::FullMatch(TypeParam("azy"), re));
 }
 // Tests RE::PartialMatch().
 TYPED_TEST(RETest, PartialMatchWorks) {
   const RE empty(TypeParam(""));
   EXPECT_TRUE(RE::PartialMatch(TypeParam(""), empty));
   EXPECT_TRUE(RE::PartialMatch(TypeParam("a"), empty));
   const RE re(TypeParam("a.*z"));
   EXPECT_TRUE(RE::PartialMatch(TypeParam("az"), re));
   EXPECT_TRUE(RE::PartialMatch(TypeParam("axyz"), re));
   EXPECT_TRUE(RE::PartialMatch(TypeParam("baz"), re));
   EXPECT_TRUE(RE::PartialMatch(TypeParam("azy"), re));
   EXPECT_FALSE(RE::PartialMatch(TypeParam("zza"), re));
 }
 # endif  // GTEST_HAS_TYPED_TEST
 #elif GTEST_USES_SIMPLE_RE
 TEST(IsInSetTest, NulCharIsNotInAnySet) {
   EXPECT_FALSE(IsInSet('\0', ""));
   EXPECT_FALSE(IsInSet('\0', "\0"));
   EXPECT_FALSE(IsInSet('\0', "a"));
 }
 TEST(IsInSetTest, WorksForNonNulChars) {
   EXPECT_FALSE(IsInSet('a', "Ab"));
   EXPECT_FALSE(IsInSet('c', ""));
   EXPECT_TRUE(IsInSet('b', "bcd"));
   EXPECT_TRUE(IsInSet('b', "ab"));
 }
 TEST(IsAsciiDigitTest, IsFalseForNonDigit) {
   EXPECT_FALSE(IsAsciiDigit('\0'));
   EXPECT_FALSE(IsAsciiDigit(' '));
   EXPECT_FALSE(IsAsciiDigit('+'));
   EXPECT_FALSE(IsAsciiDigit('-'));
   EXPECT_FALSE(IsAsciiDigit('.'));
   EXPECT_FALSE(IsAsciiDigit('a'));
 }
 TEST(IsAsciiDigitTest, IsTrueForDigit) {
   EXPECT_TRUE(IsAsciiDigit('0'));
   EXPECT_TRUE(IsAsciiDigit('1'));
   EXPECT_TRUE(IsAsciiDigit('5'));
   EXPECT_TRUE(IsAsciiDigit('9'));
 }
 TEST(IsAsciiPunctTest, IsFalseForNonPunct) {
   EXPECT_FALSE(IsAsciiPunct('\0'));
   EXPECT_FALSE(IsAsciiPunct(' '));
   EXPECT_FALSE(IsAsciiPunct('\n'));
   EXPECT_FALSE(IsAsciiPunct('a'));
   EXPECT_FALSE(IsAsciiPunct('0'));
 }
 TEST(IsAsciiPunctTest, IsTrueForPunct) {
   for (const char* p = "^-!\"#$%&'()*+,./:;<=>?@[\\]_`{|}~"; *p; p++) {
     EXPECT_PRED1(IsAsciiPunct, *p);
   }
 }
 TEST(IsRepeatTest, IsFalseForNonRepeatChar) {
   EXPECT_FALSE(IsRepeat('\0'));
   EXPECT_FALSE(IsRepeat(' '));
   EXPECT_FALSE(IsRepeat('a'));
   EXPECT_FALSE(IsRepeat('1'));
   EXPECT_FALSE(IsRepeat('-'));
 }
 TEST(IsRepeatTest, IsTrueForRepeatChar) {
   EXPECT_TRUE(IsRepeat('?'));
   EXPECT_TRUE(IsRepeat('*'));
   EXPECT_TRUE(IsRepeat('+'));
 }
 TEST(IsAsciiWhiteSpaceTest, IsFalseForNonWhiteSpace) {
   EXPECT_FALSE(IsAsciiWhiteSpace('\0'));
   EXPECT_FALSE(IsAsciiWhiteSpace('a'));
   EXPECT_FALSE(IsAsciiWhiteSpace('1'));
   EXPECT_FALSE(IsAsciiWhiteSpace('+'));
   EXPECT_FALSE(IsAsciiWhiteSpace('_'));
 }
 TEST(IsAsciiWhiteSpaceTest, IsTrueForWhiteSpace) {
   EXPECT_TRUE(IsAsciiWhiteSpace(' '));
   EXPECT_TRUE(IsAsciiWhiteSpace('\n'));
   EXPECT_TRUE(IsAsciiWhiteSpace('\r'));
   EXPECT_TRUE(IsAsciiWhiteSpace('\t'));
   EXPECT_TRUE(IsAsciiWhiteSpace('\v'));
   EXPECT_TRUE(IsAsciiWhiteSpace('\f'));
 }
 TEST(IsAsciiWordCharTest, IsFalseForNonWordChar) {
   EXPECT_FALSE(IsAsciiWordChar('\0'));
   EXPECT_FALSE(IsAsciiWordChar('+'));
   EXPECT_FALSE(IsAsciiWordChar('.'));
   EXPECT_FALSE(IsAsciiWordChar(' '));
   EXPECT_FALSE(IsAsciiWordChar('\n'));
 }
 TEST(IsAsciiWordCharTest, IsTrueForLetter) {
   EXPECT_TRUE(IsAsciiWordChar('a'));
   EXPECT_TRUE(IsAsciiWordChar('b'));
   EXPECT_TRUE(IsAsciiWordChar('A'));
   EXPECT_TRUE(IsAsciiWordChar('Z'));
 }
 TEST(IsAsciiWordCharTest, IsTrueForDigit) {
   EXPECT_TRUE(IsAsciiWordChar('0'));
   EXPECT_TRUE(IsAsciiWordChar('1'));
   EXPECT_TRUE(IsAsciiWordChar('7'));
   EXPECT_TRUE(IsAsciiWordChar('9'));
 }
 TEST(IsAsciiWordCharTest, IsTrueForUnderscore) {
   EXPECT_TRUE(IsAsciiWordChar('_'));
 }
 TEST(IsValidEscapeTest, IsFalseForNonPrintable) {
   EXPECT_FALSE(IsValidEscape('\0'));
   EXPECT_FALSE(IsValidEscape('\007'));
 }
 TEST(IsValidEscapeTest, IsFalseForDigit) {
   EXPECT_FALSE(IsValidEscape('0'));
   EXPECT_FALSE(IsValidEscape('9'));
 }
 TEST(IsValidEscapeTest, IsFalseForWhiteSpace) {
   EXPECT_FALSE(IsValidEscape(' '));
   EXPECT_FALSE(IsValidEscape('\n'));
 }
 TEST(IsValidEscapeTest, IsFalseForSomeLetter) {
   EXPECT_FALSE(IsValidEscape('a'));
   EXPECT_FALSE(IsValidEscape('Z'));
 }
 TEST(IsValidEscapeTest, IsTrueForPunct) {
   EXPECT_TRUE(IsValidEscape('.'));
   EXPECT_TRUE(IsValidEscape('-'));
   EXPECT_TRUE(IsValidEscape('^'));
   EXPECT_TRUE(IsValidEscape('$'));
   EXPECT_TRUE(IsValidEscape('('));
   EXPECT_TRUE(IsValidEscape(']'));
   EXPECT_TRUE(IsValidEscape('{'));
   EXPECT_TRUE(IsValidEscape('|'));
 }
 TEST(IsValidEscapeTest, IsTrueForSomeLetter) {
   EXPECT_TRUE(IsValidEscape('d'));
   EXPECT_TRUE(IsValidEscape('D'));
   EXPECT_TRUE(IsValidEscape('s'));
   EXPECT_TRUE(IsValidEscape('S'));
   EXPECT_TRUE(IsValidEscape('w'));
   EXPECT_TRUE(IsValidEscape('W'));
 }
 TEST(AtomMatchesCharTest, EscapedPunct) {
   EXPECT_FALSE(AtomMatchesChar(true, '\\', '\0'));
   EXPECT_FALSE(AtomMatchesChar(true, '\\', ' '));
   EXPECT_FALSE(AtomMatchesChar(true, '_', '.'));
   EXPECT_FALSE(AtomMatchesChar(true, '.', 'a'));
   EXPECT_TRUE(AtomMatchesChar(true, '\\', '\\'));
   EXPECT_TRUE(AtomMatchesChar(true, '_', '_'));
   EXPECT_TRUE(AtomMatchesChar(true, '+', '+'));
   EXPECT_TRUE(AtomMatchesChar(true, '.', '.'));
 }
 TEST(AtomMatchesCharTest, Escaped_d) {
   EXPECT_FALSE(AtomMatchesChar(true, 'd', '\0'));
   EXPECT_FALSE(AtomMatchesChar(true, 'd', 'a'));
   EXPECT_FALSE(AtomMatchesChar(true, 'd', '.'));
   EXPECT_TRUE(AtomMatchesChar(true, 'd', '0'));
   EXPECT_TRUE(AtomMatchesChar(true, 'd', '9'));
 }
 TEST(AtomMatchesCharTest, Escaped_D) {
   EXPECT_FALSE(AtomMatchesChar(true, 'D', '0'));
   EXPECT_FALSE(AtomMatchesChar(true, 'D', '9'));
   EXPECT_TRUE(AtomMatchesChar(true, 'D', '\0'));
   EXPECT_TRUE(AtomMatchesChar(true, 'D', 'a'));
   EXPECT_TRUE(AtomMatchesChar(true, 'D', '-'));
 }
 TEST(AtomMatchesCharTest, Escaped_s) {
   EXPECT_FALSE(AtomMatchesChar(true, 's', '\0'));
   EXPECT_FALSE(AtomMatchesChar(true, 's', 'a'));
   EXPECT_FALSE(AtomMatchesChar(true, 's', '.'));
   EXPECT_FALSE(AtomMatchesChar(true, 's', '9'));
   EXPECT_TRUE(AtomMatchesChar(true, 's', ' '));
   EXPECT_TRUE(AtomMatchesChar(true, 's', '\n'));
   EXPECT_TRUE(AtomMatchesChar(true, 's', '\t'));
 }
 TEST(AtomMatchesCharTest, Escaped_S) {
   EXPECT_FALSE(AtomMatchesChar(true, 'S', ' '));
   EXPECT_FALSE(AtomMatchesChar(true, 'S', '\r'));
   EXPECT_TRUE(AtomMatchesChar(true, 'S', '\0'));
   EXPECT_TRUE(AtomMatchesChar(true, 'S', 'a'));
   EXPECT_TRUE(AtomMatchesChar(true, 'S', '9'));
 }
 TEST(AtomMatchesCharTest, Escaped_w) {
   EXPECT_FALSE(AtomMatchesChar(true, 'w', '\0'));
   EXPECT_FALSE(AtomMatchesChar(true, 'w', '+'));
   EXPECT_FALSE(AtomMatchesChar(true, 'w', ' '));
   EXPECT_FALSE(AtomMatchesChar(true, 'w', '\n'));
   EXPECT_TRUE(AtomMatchesChar(true, 'w', '0'));
   EXPECT_TRUE(AtomMatchesChar(true, 'w', 'b'));
   EXPECT_TRUE(AtomMatchesChar(true, 'w', 'C'));
   EXPECT_TRUE(AtomMatchesChar(true, 'w', '_'));
 }
 TEST(AtomMatchesCharTest, Escaped_W) {
   EXPECT_FALSE(AtomMatchesChar(true, 'W', 'A'));
   EXPECT_FALSE(AtomMatchesChar(true, 'W', 'b'));
   EXPECT_FALSE(AtomMatchesChar(true, 'W', '9'));
   EXPECT_FALSE(AtomMatchesChar(true, 'W', '_'));
   EXPECT_TRUE(AtomMatchesChar(true, 'W', '\0'));
   EXPECT_TRUE(AtomMatchesChar(true, 'W', '*'));
   EXPECT_TRUE(AtomMatchesChar(true, 'W', '\n'));
 }
 TEST(AtomMatchesCharTest, EscapedWhiteSpace) {
   EXPECT_FALSE(AtomMatchesChar(true, 'f', '\0'));
   EXPECT_FALSE(AtomMatchesChar(true, 'f', '\n'));
   EXPECT_FALSE(AtomMatchesChar(true, 'n', '\0'));
   EXPECT_FALSE(AtomMatchesChar(true, 'n', '\r'));
   EXPECT_FALSE(AtomMatchesChar(true, 'r', '\0'));
   EXPECT_FALSE(AtomMatchesChar(true, 'r', 'a'));
   EXPECT_FALSE(AtomMatchesChar(true, 't', '\0'));
   EXPECT_FALSE(AtomMatchesChar(true, 't', 't'));
   EXPECT_FALSE(AtomMatchesChar(true, 'v', '\0'));
   EXPECT_FALSE(AtomMatchesChar(true, 'v', '\f'));
   EXPECT_TRUE(AtomMatchesChar(true, 'f', '\f'));
   EXPECT_TRUE(AtomMatchesChar(true, 'n', '\n'));
   EXPECT_TRUE(AtomMatchesChar(true, 'r', '\r'));
   EXPECT_TRUE(AtomMatchesChar(true, 't', '\t'));
   EXPECT_TRUE(AtomMatchesChar(true, 'v', '\v'));
 }
 TEST(AtomMatchesCharTest, UnescapedDot) {
   EXPECT_FALSE(AtomMatchesChar(false, '.', '\n'));
   EXPECT_TRUE(AtomMatchesChar(false, '.', '\0'));
   EXPECT_TRUE(AtomMatchesChar(false, '.', '.'));
   EXPECT_TRUE(AtomMatchesChar(false, '.', 'a'));
   EXPECT_TRUE(AtomMatchesChar(false, '.', ' '));
 }
 TEST(AtomMatchesCharTest, UnescapedChar) {
   EXPECT_FALSE(AtomMatchesChar(false, 'a', '\0'));
   EXPECT_FALSE(AtomMatchesChar(false, 'a', 'b'));
   EXPECT_FALSE(AtomMatchesChar(false, '$', 'a'));
   EXPECT_TRUE(AtomMatchesChar(false, '$', '$'));
   EXPECT_TRUE(AtomMatchesChar(false, '5', '5'));
   EXPECT_TRUE(AtomMatchesChar(false, 'Z', 'Z'));
 }
 TEST(ValidateRegexTest, GeneratesFailureAndReturnsFalseForInvalid) {
   EXPECT_NONFATAL_FAILURE(ASSERT_FALSE(ValidateRegex(NULL)),
                           "NULL is not a valid simple regular expression");
   EXPECT_NONFATAL_FAILURE(
       ASSERT_FALSE(ValidateRegex("a\\")),
       "Syntax error at index 1 in simple regular expression \"a\\\": ");
   EXPECT_NONFATAL_FAILURE(ASSERT_FALSE(ValidateRegex("a\\")),
                           "'\\' cannot appear at the end");
   EXPECT_NONFATAL_FAILURE(ASSERT_FALSE(ValidateRegex("\\n\\")),
                           "'\\' cannot appear at the end");
   EXPECT_NONFATAL_FAILURE(ASSERT_FALSE(ValidateRegex("\\s\\hb")),
                           "invalid escape sequence \"\\h\"");
   EXPECT_NONFATAL_FAILURE(ASSERT_FALSE(ValidateRegex("^^")),
                           "'^' can only appear at the beginning");
   EXPECT_NONFATAL_FAILURE(ASSERT_FALSE(ValidateRegex(".*^b")),
                           "'^' can only appear at the beginning");
   EXPECT_NONFATAL_FAILURE(ASSERT_FALSE(ValidateRegex("$$")),
                           "'$' can only appear at the end");
   EXPECT_NONFATAL_FAILURE(ASSERT_FALSE(ValidateRegex("^$a")),
                           "'$' can only appear at the end");
   EXPECT_NONFATAL_FAILURE(ASSERT_FALSE(ValidateRegex("a(b")),
                           "'(' is unsupported");
   EXPECT_NONFATAL_FAILURE(ASSERT_FALSE(ValidateRegex("ab)")),
                           "')' is unsupported");
   EXPECT_NONFATAL_FAILURE(ASSERT_FALSE(ValidateRegex("[ab")),
                           "'[' is unsupported");
   EXPECT_NONFATAL_FAILURE(ASSERT_FALSE(ValidateRegex("a{2")),
                           "'{' is unsupported");
   EXPECT_NONFATAL_FAILURE(ASSERT_FALSE(ValidateRegex("?")),
                           "'?' can only follow a repeatable token");
   EXPECT_NONFATAL_FAILURE(ASSERT_FALSE(ValidateRegex("^*")),
                           "'*' can only follow a repeatable token");
   EXPECT_NONFATAL_FAILURE(ASSERT_FALSE(ValidateRegex("5*+")),
                           "'+' can only follow a repeatable token");
 }
 TEST(ValidateRegexTest, ReturnsTrueForValid) {
   EXPECT_TRUE(ValidateRegex(""));
   EXPECT_TRUE(ValidateRegex("a"));
   EXPECT_TRUE(ValidateRegex(".*"));
   EXPECT_TRUE(ValidateRegex("^a_+"));
   EXPECT_TRUE(ValidateRegex("^a\\t\\&?"));
   EXPECT_TRUE(ValidateRegex("09*$"));
   EXPECT_TRUE(ValidateRegex("^Z$"));
   EXPECT_TRUE(ValidateRegex("a\\^Z\\$\\(\\)\\|\\[\\]\\{\\}"));
 }
 TEST(MatchRepetitionAndRegexAtHeadTest, WorksForZeroOrOne) {
   EXPECT_FALSE(MatchRepetitionAndRegexAtHead(false, 'a', '?', "a", "ba"));
   // Repeating more than once.
   EXPECT_FALSE(MatchRepetitionAndRegexAtHead(false, 'a', '?', "b", "aab"));
   // Repeating zero times.
   EXPECT_TRUE(MatchRepetitionAndRegexAtHead(false, 'a', '?', "b", "ba"));
   // Repeating once.
   EXPECT_TRUE(MatchRepetitionAndRegexAtHead(false, 'a', '?', "b", "ab"));
   EXPECT_TRUE(MatchRepetitionAndRegexAtHead(false, '#', '?', ".", "##"));
 }
 TEST(MatchRepetitionAndRegexAtHeadTest, WorksForZeroOrMany) {
   EXPECT_FALSE(MatchRepetitionAndRegexAtHead(false, '.', '*', "a$", "baab"));
   // Repeating zero times.
   EXPECT_TRUE(MatchRepetitionAndRegexAtHead(false, '.', '*', "b", "bc"));
   // Repeating once.
   EXPECT_TRUE(MatchRepetitionAndRegexAtHead(false, '.', '*', "b", "abc"));
   // Repeating more than once.
   EXPECT_TRUE(MatchRepetitionAndRegexAtHead(true, 'w', '*', "-", "ab_1-g"));
 }
 TEST(MatchRepetitionAndRegexAtHeadTest, WorksForOneOrMany) {
   EXPECT_FALSE(MatchRepetitionAndRegexAtHead(false, '.', '+', "a$", "baab"));
   // Repeating zero times.
   EXPECT_FALSE(MatchRepetitionAndRegexAtHead(false, '.', '+', "b", "bc"));
   // Repeating once.
   EXPECT_TRUE(MatchRepetitionAndRegexAtHead(false, '.', '+', "b", "abc"));
   // Repeating more than once.
   EXPECT_TRUE(MatchRepetitionAndRegexAtHead(true, 'w', '+', "-", "ab_1-g"));
 }
 TEST(MatchRegexAtHeadTest, ReturnsTrueForEmptyRegex) {
   EXPECT_TRUE(MatchRegexAtHead("", ""));
   EXPECT_TRUE(MatchRegexAtHead("", "ab"));
 }
 TEST(MatchRegexAtHeadTest, WorksWhenDollarIsInRegex) {
   EXPECT_FALSE(MatchRegexAtHead("$", "a"));
   EXPECT_TRUE(MatchRegexAtHead("$", ""));
   EXPECT_TRUE(MatchRegexAtHead("a$", "a"));
 }
 TEST(MatchRegexAtHeadTest, WorksWhenRegexStartsWithEscapeSequence) {
   EXPECT_FALSE(MatchRegexAtHead("\\w", "+"));
   EXPECT_FALSE(MatchRegexAtHead("\\W", "ab"));
   EXPECT_TRUE(MatchRegexAtHead("\\sa", "\nab"));
   EXPECT_TRUE(MatchRegexAtHead("\\d", "1a"));
 }
 TEST(MatchRegexAtHeadTest, WorksWhenRegexStartsWithRepetition) {
   EXPECT_FALSE(MatchRegexAtHead(".+a", "abc"));
   EXPECT_FALSE(MatchRegexAtHead("a?b", "aab"));
   EXPECT_TRUE(MatchRegexAtHead(".*a", "bc12-ab"));
   EXPECT_TRUE(MatchRegexAtHead("a?b", "b"));
   EXPECT_TRUE(MatchRegexAtHead("a?b", "ab"));
 }
 TEST(MatchRegexAtHeadTest,
      WorksWhenRegexStartsWithRepetionOfEscapeSequence) {
   EXPECT_FALSE(MatchRegexAtHead("\\.+a", "abc"));
   EXPECT_FALSE(MatchRegexAtHead("\\s?b", "  b"));
   EXPECT_TRUE(MatchRegexAtHead("\\(*a", "((((ab"));
   EXPECT_TRUE(MatchRegexAtHead("\\^?b", "^b"));
   EXPECT_TRUE(MatchRegexAtHead("\\\\?b", "b"));
   EXPECT_TRUE(MatchRegexAtHead("\\\\?b", "\\b"));
 }
 TEST(MatchRegexAtHeadTest, MatchesSequentially) {
   EXPECT_FALSE(MatchRegexAtHead("ab.*c", "acabc"));
   EXPECT_TRUE(MatchRegexAtHead("ab.*c", "ab-fsc"));
 }
 TEST(MatchRegexAnywhereTest, ReturnsFalseWhenStringIsNull) {
   EXPECT_FALSE(MatchRegexAnywhere("", NULL));
 }
 TEST(MatchRegexAnywhereTest, WorksWhenRegexStartsWithCaret) {
   EXPECT_FALSE(MatchRegexAnywhere("^a", "ba"));
   EXPECT_FALSE(MatchRegexAnywhere("^$", "a"));
   EXPECT_TRUE(MatchRegexAnywhere("^a", "ab"));
   EXPECT_TRUE(MatchRegexAnywhere("^", "ab"));
   EXPECT_TRUE(MatchRegexAnywhere("^$", ""));
 }
 TEST(MatchRegexAnywhereTest, ReturnsFalseWhenNoMatch) {
   EXPECT_FALSE(MatchRegexAnywhere("a", "bcde123"));
   EXPECT_FALSE(MatchRegexAnywhere("a.+a", "--aa88888888"));
 }
 TEST(MatchRegexAnywhereTest, ReturnsTrueWhenMatchingPrefix) {
   EXPECT_TRUE(MatchRegexAnywhere("\\w+", "ab1_ - 5"));
   EXPECT_TRUE(MatchRegexAnywhere(".*=", "="));
   EXPECT_TRUE(MatchRegexAnywhere("x.*ab?.*bc", "xaaabc"));
 }
 TEST(MatchRegexAnywhereTest, ReturnsTrueWhenMatchingNonPrefix) {
   EXPECT_TRUE(MatchRegexAnywhere("\\w+", "$$$ ab1_ - 5"));
   EXPECT_TRUE(MatchRegexAnywhere("\\.+=", "=  ...="));
 }
 // Tests RE's implicit constructors.
 TEST(RETest, ImplicitConstructorWorks) {
   const RE empty("");
   EXPECT_STREQ("", empty.pattern());
   const RE simple("hello");
   EXPECT_STREQ("hello", simple.pattern());
 }
 // Tests that RE's constructors reject invalid regular expressions.
 TEST(RETest, RejectsInvalidRegex) {
   EXPECT_NONFATAL_FAILURE({
     const RE normal(NULL);
   }, "NULL is not a valid simple regular expression");
   EXPECT_NONFATAL_FAILURE({
     const RE normal(".*(\\w+");
   }, "'(' is unsupported");
   EXPECT_NONFATAL_FAILURE({
     const RE invalid("^?");
   }, "'?' can only follow a repeatable token");
 }
 // Tests RE::FullMatch().
 TEST(RETest, FullMatchWorks) {
   const RE empty("");
   EXPECT_TRUE(RE::FullMatch("", empty));
   EXPECT_FALSE(RE::FullMatch("a", empty));
   const RE re1("a");
   EXPECT_TRUE(RE::FullMatch("a", re1));
   const RE re("a.*z");
   EXPECT_TRUE(RE::FullMatch("az", re));
   EXPECT_TRUE(RE::FullMatch("axyz", re));
   EXPECT_FALSE(RE::FullMatch("baz", re));
   EXPECT_FALSE(RE::FullMatch("azy", re));
 }
 // Tests RE::PartialMatch().
 TEST(RETest, PartialMatchWorks) {
   const RE empty("");
   EXPECT_TRUE(RE::PartialMatch("", empty));
   EXPECT_TRUE(RE::PartialMatch("a", empty));
   const RE re("a.*z");
   EXPECT_TRUE(RE::PartialMatch("az", re));
   EXPECT_TRUE(RE::PartialMatch("axyz", re));
   EXPECT_TRUE(RE::PartialMatch("baz", re));
   EXPECT_TRUE(RE::PartialMatch("azy", re));
   EXPECT_FALSE(RE::PartialMatch("zza", re));
 }
 #endif  // GTEST_USES_POSIX_RE
 #if !GTEST_OS_WINDOWS_MOBILE
 TEST(CaptureTest, CapturesStdout) {
   CaptureStdout();
   fprintf(stdout, "abc");
   EXPECT_STREQ("abc", GetCapturedStdout().c_str());
   CaptureStdout();
   fprintf(stdout, "def%cghi", '\0');
   EXPECT_EQ(::std::string("def\0ghi", 7), ::std::string(GetCapturedStdout()));
 }
 TEST(CaptureTest, CapturesStderr) {
   CaptureStderr();
   fprintf(stderr, "jkl");
   EXPECT_STREQ("jkl", GetCapturedStderr().c_str());
   CaptureStderr();
   fprintf(stderr, "jkl%cmno", '\0');
   EXPECT_EQ(::std::string("jkl\0mno", 7), ::std::string(GetCapturedStderr()));
 }
 // Tests that stdout and stderr capture don't interfere with each other.
 TEST(CaptureTest, CapturesStdoutAndStderr) {
   CaptureStdout();
   CaptureStderr();
   fprintf(stdout, "pqr");
   fprintf(stderr, "stu");
   EXPECT_STREQ("pqr", GetCapturedStdout().c_str());
   EXPECT_STREQ("stu", GetCapturedStderr().c_str());
 }
 TEST(CaptureDeathTest, CannotReenterStdoutCapture) {
   CaptureStdout();
   EXPECT_DEATH_IF_SUPPORTED(CaptureStdout(),
                             "Only one stdout capturer can exist at a time");
   GetCapturedStdout();
   // We cannot test stderr capturing using death tests as they use it
   // themselves.
 }
 #endif  // !GTEST_OS_WINDOWS_MOBILE
 TEST(ThreadLocalTest, DefaultConstructorInitializesToDefaultValues) {
   ThreadLocal<int> t1;
   EXPECT_EQ(0, t1.get());
   ThreadLocal<void*> t2;
   EXPECT_TRUE(t2.get() == NULL);
 }
 TEST(ThreadLocalTest, SingleParamConstructorInitializesToParam) {
   ThreadLocal<int> t1(123);
   EXPECT_EQ(123, t1.get());
   int i = 0;
   ThreadLocal<int*> t2(&i);
   EXPECT_EQ(&i, t2.get());
 }
 class NoDefaultContructor {
  public:
   explicit NoDefaultContructor(const char*) {}
   NoDefaultContructor(const NoDefaultContructor&) {}
 };
 TEST(ThreadLocalTest, ValueDefaultContructorIsNotRequiredForParamVersion) {
   ThreadLocal<NoDefaultContructor> bar(NoDefaultContructor("foo"));
   bar.pointer();
 }
 TEST(ThreadLocalTest, GetAndPointerReturnSameValue) {
   ThreadLocal<String> thread_local_string;
   EXPECT_EQ(thread_local_string.pointer(), &(thread_local_string.get()));
   // Verifies the condition still holds after calling set.
   thread_local_string.set("foo");
   EXPECT_EQ(thread_local_string.pointer(), &(thread_local_string.get()));
 }
 TEST(ThreadLocalTest, PointerAndConstPointerReturnSameValue) {
   ThreadLocal<String> thread_local_string;
   const ThreadLocal<String>& const_thread_local_string = thread_local_string;
   EXPECT_EQ(thread_local_string.pointer(), const_thread_local_string.pointer());
   thread_local_string.set("foo");
   EXPECT_EQ(thread_local_string.pointer(), const_thread_local_string.pointer());
 }
 #if GTEST_IS_THREADSAFE
 void AddTwo(int* param) { *param += 2; }
 TEST(ThreadWithParamTest, ConstructorExecutesThreadFunc) {
   int i = 40;
   ThreadWithParam<int*> thread(&AddTwo, &i, NULL);
   thread.Join();
   EXPECT_EQ(42, i);
 }
 TEST(MutexDeathTest, AssertHeldShouldAssertWhenNotLocked) {
   // AssertHeld() is flaky only in the presence of multiple threads accessing
   // the lock. In this case, the test is robust.
   EXPECT_DEATH_IF_SUPPORTED({
     Mutex m;
     { MutexLock lock(&m); }
     m.AssertHeld();
   },
   "thread .*hold");
 }
 TEST(MutexTest, AssertHeldShouldNotAssertWhenLocked) {
   Mutex m;
   MutexLock lock(&m);
   m.AssertHeld();
 }
 class AtomicCounterWithMutex {
  public:
   explicit AtomicCounterWithMutex(Mutex* mutex) :
     value_(0), mutex_(mutex), random_(42) {}
   void Increment() {
     MutexLock lock(mutex_);
     int temp = value_;
     {
       // Locking a mutex puts up a memory barrier, preventing reads and
       // writes to value_ rearranged when observed from other threads.
       //
       // We cannot use Mutex and MutexLock here or rely on their memory
       // barrier functionality as we are testing them here.
       pthread_mutex_t memory_barrier_mutex;
       GTEST_CHECK_POSIX_SUCCESS_(
           pthread_mutex_init(&memory_barrier_mutex, NULL));
       GTEST_CHECK_POSIX_SUCCESS_(pthread_mutex_lock(&memory_barrier_mutex));
       SleepMilliseconds(random_.Generate(30));
       GTEST_CHECK_POSIX_SUCCESS_(pthread_mutex_unlock(&memory_barrier_mutex));
       GTEST_CHECK_POSIX_SUCCESS_(pthread_mutex_destroy(&memory_barrier_mutex));
     }
     value_ = temp + 1;
   }
   int value() const { return value_; }
  private:
   volatile int value_;
   Mutex* const mutex_;  // Protects value_.
   Random       random_;
 };
 void CountingThreadFunc(pair<AtomicCounterWithMutex*, int> param) {
   for (int i = 0; i < param.second; ++i)
       param.first->Increment();
 }
 // Tests that the mutex only lets one thread at a time to lock it.
 TEST(MutexTest, OnlyOneThreadCanLockAtATime) {
   Mutex mutex;
   AtomicCounterWithMutex locked_counter(&mutex);
   typedef ThreadWithParam<pair<AtomicCounterWithMutex*, int> > ThreadType;
   const int kCycleCount = 20;
   const int kThreadCount = 7;
   scoped_ptr<ThreadType> counting_threads[kThreadCount];
   Notification threads_can_start;
   // Creates and runs kThreadCount threads that increment locked_counter
   // kCycleCount times each.
   for (int i = 0; i < kThreadCount; ++i) {
     counting_threads[i].reset(new ThreadType(&CountingThreadFunc,
                                              make_pair(&locked_counter,
                                                        kCycleCount),
                                              &threads_can_start));
   }
   threads_can_start.Notify();
   for (int i = 0; i < kThreadCount; ++i)
     counting_threads[i]->Join();
   // If the mutex lets more than one thread to increment the counter at a
   // time, they are likely to encounter a race condition and have some
   // increments overwritten, resulting in the lower then expected counter
   // value.
   EXPECT_EQ(kCycleCount * kThreadCount, locked_counter.value());
 }
 template <typename T>
 void RunFromThread(void (func)(T), T param) {
   ThreadWithParam<T> thread(func, param, NULL);
   thread.Join();
 }
 void RetrieveThreadLocalValue(pair<ThreadLocal<String>*, String*> param) {
   *param.second = param.first->get();
 }
 TEST(ThreadLocalTest, ParameterizedConstructorSetsDefault) {
   ThreadLocal<String> thread_local_string("foo");
   EXPECT_STREQ("foo", thread_local_string.get().c_str());
   thread_local_string.set("bar");
   EXPECT_STREQ("bar", thread_local_string.get().c_str());
   String result;
   RunFromThread(&RetrieveThreadLocalValue,
                 make_pair(&thread_local_string, &result));
   EXPECT_STREQ("foo", result.c_str());
 }
 // DestructorTracker keeps track of whether its instances have been
 // destroyed.
 static std::vector<bool> g_destroyed;
 class DestructorTracker {
  public:
   DestructorTracker() : index_(GetNewIndex()) {}
   DestructorTracker(const DestructorTracker& /* rhs */)
       : index_(GetNewIndex()) {}
   ~DestructorTracker() {
     // We never access g_destroyed concurrently, so we don't need to
     // protect the write operation under a mutex.
     g_destroyed[index_] = true;
   }
  private:
   static int GetNewIndex() {
     g_destroyed.push_back(false);
     return g_destroyed.size() - 1;
   }
   const int index_;
 };
 typedef ThreadLocal<DestructorTracker>* ThreadParam;
 void CallThreadLocalGet(ThreadParam thread_local_param) {
   thread_local_param->get();
 }
 // Tests that when a ThreadLocal object dies in a thread, it destroys
 // the managed object for that thread.
 TEST(ThreadLocalTest, DestroysManagedObjectForOwnThreadWhenDying) {
   g_destroyed.clear();
   {
     // The next line default constructs a DestructorTracker object as
     // the default value of objects managed by thread_local_tracker.
     ThreadLocal<DestructorTracker> thread_local_tracker;
     ASSERT_EQ(1U, g_destroyed.size());
     ASSERT_FALSE(g_destroyed[0]);
     // This creates another DestructorTracker object for the main thread.
     thread_local_tracker.get();
     ASSERT_EQ(2U, g_destroyed.size());
     ASSERT_FALSE(g_destroyed[0]);
     ASSERT_FALSE(g_destroyed[1]);
   }
   // Now thread_local_tracker has died.  It should have destroyed both the
   // default value shared by all threads and the value for the main
   // thread.
   ASSERT_EQ(2U, g_destroyed.size());
   EXPECT_TRUE(g_destroyed[0]);
   EXPECT_TRUE(g_destroyed[1]);
   g_destroyed.clear();
 }
 // Tests that when a thread exits, the thread-local object for that
 // thread is destroyed.
 TEST(ThreadLocalTest, DestroysManagedObjectAtThreadExit) {
   g_destroyed.clear();
   {
     // The next line default constructs a DestructorTracker object as
     // the default value of objects managed by thread_local_tracker.
     ThreadLocal<DestructorTracker> thread_local_tracker;
     ASSERT_EQ(1U, g_destroyed.size());
     ASSERT_FALSE(g_destroyed[0]);
     // This creates another DestructorTracker object in the new thread.
     ThreadWithParam<ThreadParam> thread(
         &CallThreadLocalGet, &thread_local_tracker, NULL);
     thread.Join();
     // Now the new thread has exited.  The per-thread object for it
     // should have been destroyed.
     ASSERT_EQ(2U, g_destroyed.size());
     ASSERT_FALSE(g_destroyed[0]);
     ASSERT_TRUE(g_destroyed[1]);
   }
   // Now thread_local_tracker has died.  The default value should have been
   // destroyed too.
   ASSERT_EQ(2U, g_destroyed.size());
   EXPECT_TRUE(g_destroyed[0]);
   EXPECT_TRUE(g_destroyed[1]);
   g_destroyed.clear();
 }
 TEST(ThreadLocalTest, ThreadLocalMutationsAffectOnlyCurrentThread) {
   ThreadLocal<String> thread_local_string;
   thread_local_string.set("Foo");
   EXPECT_STREQ("Foo", thread_local_string.get().c_str());
   String result;
   RunFromThread(&RetrieveThreadLocalValue,
                 make_pair(&thread_local_string, &result));
   EXPECT_TRUE(result.c_str() == NULL);
 }
 #endif  // GTEST_IS_THREADSAFE
 }  // namespace internal
 }  // namespace testing

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