stderr results from the CPAN

Alien-cares

//   GTEST_HAS_DEATH_TEST   - death tests
//   GTEST_HAS_PARAM_TEST   - value-parameterized tests
//   GTEST_HAS_TYPED_TEST   - typed tests
//   GTEST_HAS_TYPED_TEST_P - type-parameterized tests
//   GTEST_IS_THREADSAFE    - Google Test is thread-safe.
//   GTEST_USES_POSIX_RE    - enhanced POSIX regex is used. Do not confuse with
//                            GTEST_HAS_POSIX_RE (see above) which users can
//                            define themselves.
//   GTEST_USES_SIMPLE_RE   - our own simple regex is used;
//                            the above two are mutually exclusive.
//   GTEST_CAN_COMPARE_NULL - accepts untyped NULL in EXPECT_EQ().

// Misc public macros
// ------------------
//
//   GTEST_FLAG(flag_name)  - references the variable corresponding to
//                            the given Google Test flag.

// Internal utilities
// ------------------
//
// The following macros and utilities are for Google Test's INTERNAL
// use only.  Code outside Google Test MUST NOT USE THEM DIRECTLY.
//
// Macros for basic C++ coding:
//   GTEST_AMBIGUOUS_ELSE_BLOCKER_ - for disabling a gcc warning.
//   GTEST_ATTRIBUTE_UNUSED_  - declares that a class' instances or a
//                              variable don't have to be used.
//   GTEST_DISALLOW_ASSIGN_   - disables operator=.
//   GTEST_DISALLOW_COPY_AND_ASSIGN_ - disables copy ctor and operator=.
//   GTEST_MUST_USE_RESULT_   - declares that a function's result must be used.
//   GTEST_INTENTIONAL_CONST_COND_PUSH_ - start code section where MSVC C4127 is
//                                        suppressed (constant conditional).
//   GTEST_INTENTIONAL_CONST_COND_POP_  - finish code section where MSVC C4127
//                                        is suppressed.
//
// C++11 feature wrappers:
//
//   testing::internal::move  - portability wrapper for std::move.
//
// Synchronization:
//   Mutex, MutexLock, ThreadLocal, GetThreadCount()
//                            - synchronization primitives.
//
// Template meta programming:
//   is_pointer     - as in TR1; needed on Symbian and IBM XL C/C++ only.
//   IteratorTraits - partial implementation of std::iterator_traits, which
//                    is not available in libCstd when compiled with Sun C++.
//
// Smart pointers:
//   scoped_ptr     - as in TR2.
//
// Regular expressions:
//   RE             - a simple regular expression class using the POSIX
//                    Extended Regular Expression syntax on UNIX-like
//                    platforms, or a reduced regular exception syntax on
//                    other platforms, including Windows.
//
// Logging:
//   GTEST_LOG_()   - logs messages at the specified severity level.
//   LogToStderr()  - directs all log messages to stderr.
//   FlushInfoLog() - flushes informational log messages.
//
// Stdout and stderr capturing:
//   CaptureStdout()     - starts capturing stdout.
//   GetCapturedStdout() - stops capturing stdout and returns the captured
//                         string.
//   CaptureStderr()     - starts capturing stderr.
//   GetCapturedStderr() - stops capturing stderr and returns the captured
//                         string.
//
// Integer types:
//   TypeWithSize   - maps an integer to a int type.
//   Int32, UInt32, Int64, UInt64, TimeInMillis
//                  - integers of known sizes.
//   BiggestInt     - the biggest signed integer type.
//
// Command-line utilities:
//   GTEST_DECLARE_*()  - declares a flag.
//   GTEST_DEFINE_*()   - defines a flag.
//   GetInjectableArgvs() - returns the command line as a vector of strings.
//
// Environment variable utilities:
//   GetEnv()             - gets the value of an environment variable.
//   BoolFromGTestEnv()   - parses a bool environment variable.
//   Int32FromGTestEnv()  - parses an Int32 environment variable.
//   StringFromGTestEnv() - parses a string environment variable.

#include <ctype.h>   // for isspace, etc
#include <stddef.h>  // for ptrdiff_t
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#ifndef _WIN32_WCE
# include <sys/types.h>
# include <sys/stat.h>
#endif  // !_WIN32_WCE

#if defined __APPLE__
# include <AvailabilityMacros.h>
# include <TargetConditionals.h>
#endif

#include <algorithm>  // NOLINT
#include <iostream>  // NOLINT
#include <sstream>  // NOLINT
#include <string>  // NOLINT
#include <utility>
#include <vector>  // NOLINT

// Copyright 2015, 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

libcares/test/gmock-1.8.0/gtest/gtest.h view on Meta::CPAN

  //
  // TODO(wan@google.com): make FullMatch() and PartialMatch() work
  // when str contains NUL characters.
  static bool FullMatch(const ::std::string& str, const RE& re) {
    return FullMatch(str.c_str(), re);
  }
  static bool PartialMatch(const ::std::string& str, const RE& re) {
    return PartialMatch(str.c_str(), re);
  }

#if GTEST_HAS_GLOBAL_STRING

  static bool FullMatch(const ::string& str, const RE& re) {
    return FullMatch(str.c_str(), re);
  }
  static bool PartialMatch(const ::string& str, const RE& re) {
    return PartialMatch(str.c_str(), re);
  }

#endif  // GTEST_HAS_GLOBAL_STRING

  static bool FullMatch(const char* str, const RE& re);
  static bool PartialMatch(const char* str, const RE& re);

 private:
  void Init(const char* regex);

  // We use a const char* instead of an std::string, as Google Test used to be
  // used where std::string is not available.  TODO(wan@google.com): change to
  // std::string.
  const char* pattern_;
  bool is_valid_;

#if GTEST_USES_POSIX_RE

  regex_t full_regex_;     // For FullMatch().
  regex_t partial_regex_;  // For PartialMatch().

#else  // GTEST_USES_SIMPLE_RE

  const char* full_pattern_;  // For FullMatch();

#endif

  GTEST_DISALLOW_ASSIGN_(RE);
};

// Formats a source file path and a line number as they would appear
// in an error message from the compiler used to compile this code.
GTEST_API_ ::std::string FormatFileLocation(const char* file, int line);

// Formats a file location for compiler-independent XML output.
// Although this function is not platform dependent, we put it next to
// FormatFileLocation in order to contrast the two functions.
GTEST_API_ ::std::string FormatCompilerIndependentFileLocation(const char* file,
                                                               int line);

// Defines logging utilities:
//   GTEST_LOG_(severity) - logs messages at the specified severity level. The
//                          message itself is streamed into the macro.
//   LogToStderr()  - directs all log messages to stderr.
//   FlushInfoLog() - flushes informational log messages.

enum GTestLogSeverity {
  GTEST_INFO,
  GTEST_WARNING,
  GTEST_ERROR,
  GTEST_FATAL
};

// Formats log entry severity, provides a stream object for streaming the
// log message, and terminates the message with a newline when going out of
// scope.
class GTEST_API_ GTestLog {
 public:
  GTestLog(GTestLogSeverity severity, const char* file, int line);

  // Flushes the buffers and, if severity is GTEST_FATAL, aborts the program.
  ~GTestLog();

  ::std::ostream& GetStream() { return ::std::cerr; }

 private:
  const GTestLogSeverity severity_;

  GTEST_DISALLOW_COPY_AND_ASSIGN_(GTestLog);
};

#if !defined(GTEST_LOG_)

# define GTEST_LOG_(severity) \
    ::testing::internal::GTestLog(::testing::internal::GTEST_##severity, \
                                  __FILE__, __LINE__).GetStream()

inline void LogToStderr() {}
inline void FlushInfoLog() { fflush(NULL); }

#endif  // !defined(GTEST_LOG_)

#if !defined(GTEST_CHECK_)
// INTERNAL IMPLEMENTATION - DO NOT USE.
//
// GTEST_CHECK_ is an all-mode assert. It aborts the program if the condition
// is not satisfied.
//  Synopsys:
//    GTEST_CHECK_(boolean_condition);
//     or
//    GTEST_CHECK_(boolean_condition) << "Additional message";
//
//    This checks the condition and if the condition is not satisfied
//    it prints message about the condition violation, including the
//    condition itself, plus additional message streamed into it, if any,
//    and then it aborts the program. It aborts the program irrespective of
//    whether it is built in the debug mode or not.
# define GTEST_CHECK_(condition) \
    GTEST_AMBIGUOUS_ELSE_BLOCKER_ \
    if (::testing::internal::IsTrue(condition)) \
      ; \
    else \
      GTEST_LOG_(FATAL) << "Condition " #condition " failed. "
#endif  // !defined(GTEST_CHECK_)

libcares/test/gmock-1.8.0/gtest/gtest.h view on Meta::CPAN

// type Foo to type SubclassOfFoo), static_cast<> isn't safe, because
// how do you know the pointer is really of type SubclassOfFoo?  It
// could be a bare Foo, or of type DifferentSubclassOfFoo.  Thus,
// when you downcast, you should use this macro.  In debug mode, we
// use dynamic_cast<> to double-check the downcast is legal (we die
// if it's not).  In normal mode, we do the efficient static_cast<>
// instead.  Thus, it's important to test in debug mode to make sure
// the cast is legal!
//    This is the only place in the code we should use dynamic_cast<>.
// In particular, you SHOULDN'T be using dynamic_cast<> in order to
// do RTTI (eg code like this:
//    if (dynamic_cast<Subclass1>(foo)) HandleASubclass1Object(foo);
//    if (dynamic_cast<Subclass2>(foo)) HandleASubclass2Object(foo);
// You should design the code some other way not to need this.
//
// This relatively ugly name is intentional. It prevents clashes with
// similar functions users may have (e.g., down_cast). The internal
// namespace alone is not enough because the function can be found by ADL.
template<typename To, typename From>  // use like this: DownCast_<T*>(foo);
inline To DownCast_(From* f) {  // so we only accept pointers
  // Ensures that To is a sub-type of From *.  This test is here only
  // for compile-time type checking, and has no overhead in an
  // optimized build at run-time, as it will be optimized away
  // completely.
  GTEST_INTENTIONAL_CONST_COND_PUSH_()
  if (false) {
  GTEST_INTENTIONAL_CONST_COND_POP_()
    const To to = NULL;
    ::testing::internal::ImplicitCast_<From*>(to);
  }

#if GTEST_HAS_RTTI
  // RTTI: debug mode only!
  GTEST_CHECK_(f == NULL || dynamic_cast<To>(f) != NULL);
#endif
  return static_cast<To>(f);
}

// Downcasts the pointer of type Base to Derived.
// Derived must be a subclass of Base. The parameter MUST
// point to a class of type Derived, not any subclass of it.
// When RTTI is available, the function performs a runtime
// check to enforce this.
template <class Derived, class Base>
Derived* CheckedDowncastToActualType(Base* base) {
#if GTEST_HAS_RTTI
  GTEST_CHECK_(typeid(*base) == typeid(Derived));
#endif

#if GTEST_HAS_DOWNCAST_
  return ::down_cast<Derived*>(base);
#elif GTEST_HAS_RTTI
  return dynamic_cast<Derived*>(base);  // NOLINT
#else
  return static_cast<Derived*>(base);  // Poor man's downcast.
#endif
}

#if GTEST_HAS_STREAM_REDIRECTION

// Defines the stderr capturer:
//   CaptureStdout     - starts capturing stdout.
//   GetCapturedStdout - stops capturing stdout and returns the captured string.
//   CaptureStderr     - starts capturing stderr.
//   GetCapturedStderr - stops capturing stderr and returns the captured string.
//
GTEST_API_ void CaptureStdout();
GTEST_API_ std::string GetCapturedStdout();
GTEST_API_ void CaptureStderr();
GTEST_API_ std::string GetCapturedStderr();

#endif  // GTEST_HAS_STREAM_REDIRECTION

// Returns a path to temporary directory.
GTEST_API_ std::string TempDir();

// Returns the size (in bytes) of a file.
GTEST_API_ size_t GetFileSize(FILE* file);

// Reads the entire content of a file as a string.
GTEST_API_ std::string ReadEntireFile(FILE* file);

// All command line arguments.
GTEST_API_ const ::std::vector<testing::internal::string>& GetArgvs();

#if GTEST_HAS_DEATH_TEST

const ::std::vector<testing::internal::string>& GetInjectableArgvs();
void SetInjectableArgvs(const ::std::vector<testing::internal::string>*
                             new_argvs);


#endif  // GTEST_HAS_DEATH_TEST

// Defines synchronization primitives.
#if GTEST_IS_THREADSAFE
# if GTEST_HAS_PTHREAD
// Sleeps for (roughly) n milliseconds.  This function is only for testing
// Google Test's own constructs.  Don't use it in user tests, either
// directly or indirectly.
inline void SleepMilliseconds(int n) {
  const timespec time = {
    0,                  // 0 seconds.
    n * 1000L * 1000L,  // And n ms.
  };
  nanosleep(&time, NULL);
}
# endif  // GTEST_HAS_PTHREAD

# if GTEST_HAS_NOTIFICATION_
// Notification has already been imported into the namespace.
// Nothing to do here.

# elif GTEST_HAS_PTHREAD
// Allows a controller thread to pause execution of newly created
// threads until notified.  Instances of this class must be created
// and destroyed in the controller thread.
//
// This class is only for testing Google Test's own constructs. Do not
// use it in user tests, either directly or indirectly.
class Notification {
 public:
  Notification() : notified_(false) {
    GTEST_CHECK_POSIX_SUCCESS_(pthread_mutex_init(&mutex_, NULL));
  }

libcares/test/gmock-1.8.0/gtest/gtest.h view on Meta::CPAN

#endif  // GTEST_OS_WINDOWS

// Types of SetUpTestCase() and TearDownTestCase() functions.
typedef void (*SetUpTestCaseFunc)();
typedef void (*TearDownTestCaseFunc)();

struct CodeLocation {
  CodeLocation(const string& a_file, int a_line) : file(a_file), line(a_line) {}

  string file;
  int line;
};

// Creates a new TestInfo object and registers it with Google Test;
// returns the created object.
//
// Arguments:
//
//   test_case_name:   name of the test case
//   name:             name of the test
//   type_param        the name of the test's type parameter, or NULL if
//                     this is not a typed or a type-parameterized test.
//   value_param       text representation of the test's value parameter,
//                     or NULL if this is not a type-parameterized test.
//   code_location:    code location where the test is defined
//   fixture_class_id: ID of the test fixture class
//   set_up_tc:        pointer to the function that sets up the test case
//   tear_down_tc:     pointer to the function that tears down the test case
//   factory:          pointer to the factory that creates a test object.
//                     The newly created TestInfo instance will assume
//                     ownership of the factory object.
GTEST_API_ TestInfo* MakeAndRegisterTestInfo(
    const char* test_case_name,
    const char* name,
    const char* type_param,
    const char* value_param,
    CodeLocation code_location,
    TypeId fixture_class_id,
    SetUpTestCaseFunc set_up_tc,
    TearDownTestCaseFunc tear_down_tc,
    TestFactoryBase* factory);

// If *pstr starts with the given prefix, modifies *pstr to be right
// past the prefix and returns true; otherwise leaves *pstr unchanged
// and returns false.  None of pstr, *pstr, and prefix can be NULL.
GTEST_API_ bool SkipPrefix(const char* prefix, const char** pstr);

#if GTEST_HAS_TYPED_TEST || GTEST_HAS_TYPED_TEST_P

// State of the definition of a type-parameterized test case.
class GTEST_API_ TypedTestCasePState {
 public:
  TypedTestCasePState() : registered_(false) {}

  // Adds the given test name to defined_test_names_ and return true
  // if the test case hasn't been registered; otherwise aborts the
  // program.
  bool AddTestName(const char* file, int line, const char* case_name,
                   const char* test_name) {
    if (registered_) {
      fprintf(stderr, "%s Test %s must be defined before "
              "REGISTER_TYPED_TEST_CASE_P(%s, ...).\n",
              FormatFileLocation(file, line).c_str(), test_name, case_name);
      fflush(stderr);
      posix::Abort();
    }
    registered_tests_.insert(
        ::std::make_pair(test_name, CodeLocation(file, line)));
    return true;
  }

  bool TestExists(const std::string& test_name) const {
    return registered_tests_.count(test_name) > 0;
  }

  const CodeLocation& GetCodeLocation(const std::string& test_name) const {
    RegisteredTestsMap::const_iterator it = registered_tests_.find(test_name);
    GTEST_CHECK_(it != registered_tests_.end());
    return it->second;
  }

  // Verifies that registered_tests match the test names in
  // defined_test_names_; returns registered_tests if successful, or
  // aborts the program otherwise.
  const char* VerifyRegisteredTestNames(
      const char* file, int line, const char* registered_tests);

 private:
  typedef ::std::map<std::string, CodeLocation> RegisteredTestsMap;

  bool registered_;
  RegisteredTestsMap registered_tests_;
};

// Skips to the first non-space char after the first comma in 'str';
// returns NULL if no comma is found in 'str'.
inline const char* SkipComma(const char* str) {
  const char* comma = strchr(str, ',');
  if (comma == NULL) {
    return NULL;
  }
  while (IsSpace(*(++comma))) {}
  return comma;
}

// Returns the prefix of 'str' before the first comma in it; returns
// the entire string if it contains no comma.
inline std::string GetPrefixUntilComma(const char* str) {
  const char* comma = strchr(str, ',');
  return comma == NULL ? str : std::string(str, comma);
}

// Splits a given string on a given delimiter, populating a given
// vector with the fields.
void SplitString(const ::std::string& str, char delimiter,
                 ::std::vector< ::std::string>* dest);

// TypeParameterizedTest<Fixture, TestSel, Types>::Register()
// registers a list of type-parameterized tests with Google Test.  The
// return value is insignificant - we just need to return something
// such that we can call this function in a namespace scope.
//
// Implementation note: The GTEST_TEMPLATE_ macro declares a template
// template parameter.  It's defined in gtest-type-util.h.
template <GTEST_TEMPLATE_ Fixture, class TestSel, typename Types>
class TypeParameterizedTest {
 public:
  // 'index' is the index of the test in the type list 'Types'
  // specified in INSTANTIATE_TYPED_TEST_CASE_P(Prefix, TestCase,
  // Types).  Valid values for 'index' are [0, N - 1] where N is the
  // length of Types.
  static bool Register(const char* prefix,
                       CodeLocation code_location,
                       const char* case_name, const char* test_names,
                       int index) {
    typedef typename Types::Head Type;
    typedef Fixture<Type> FixtureClass;
    typedef typename GTEST_BIND_(TestSel, Type) TestClass;

    // First, registers the first type-parameterized test in the type
    // list.
    MakeAndRegisterTestInfo(
        (std::string(prefix) + (prefix[0] == '\0' ? "" : "/") + case_name + "/"
         + StreamableToString(index)).c_str(),
        StripTrailingSpaces(GetPrefixUntilComma(test_names)).c_str(),
        GetTypeName<Type>().c_str(),
        NULL,  // No value parameter.
        code_location,
        GetTypeId<FixtureClass>(),
        TestClass::SetUpTestCase,
        TestClass::TearDownTestCase,
        new TestFactoryImpl<TestClass>);

    // Next, recurses (at compile time) with the tail of the type list.
    return TypeParameterizedTest<Fixture, TestSel, typename Types::Tail>
        ::Register(prefix, code_location, case_name, test_names, index + 1);
  }
};

// The base case for the compile time recursion.
template <GTEST_TEMPLATE_ Fixture, class TestSel>
class TypeParameterizedTest<Fixture, TestSel, Types0> {
 public:
  static bool Register(const char* /*prefix*/, CodeLocation,
                       const char* /*case_name*/, const char* /*test_names*/,
                       int /*index*/) {
    return true;
  }
};

// TypeParameterizedTestCase<Fixture, Tests, Types>::Register()
// registers *all combinations* of 'Tests' and 'Types' with Google
// Test.  The return value is insignificant - we just need to return
// something such that we can call this function in a namespace scope.
template <GTEST_TEMPLATE_ Fixture, typename Tests, typename Types>
class TypeParameterizedTestCase {
 public:
  static bool Register(const char* prefix, CodeLocation code_location,
                       const TypedTestCasePState* state,
                       const char* case_name, const char* test_names) {
    std::string test_name = StripTrailingSpaces(
        GetPrefixUntilComma(test_names));
    if (!state->TestExists(test_name)) {
      fprintf(stderr, "Failed to get code location for test %s.%s at %s.",
              case_name, test_name.c_str(),
              FormatFileLocation(code_location.file.c_str(),
                                 code_location.line).c_str());
      fflush(stderr);
      posix::Abort();
    }
    const CodeLocation& test_location = state->GetCodeLocation(test_name);

    typedef typename Tests::Head Head;

    // First, register the first test in 'Test' for each type in 'Types'.
    TypeParameterizedTest<Fixture, Head, Types>::Register(
        prefix, test_location, case_name, test_names, 0);

    // Next, recurses (at compile time) with the tail of the test list.
    return TypeParameterizedTestCase<Fixture, typename Tests::Tail, Types>
        ::Register(prefix, code_location, state,
                   case_name, SkipComma(test_names));
  }
};

// The base case for the compile time recursion.
template <GTEST_TEMPLATE_ Fixture, typename Types>
class TypeParameterizedTestCase<Fixture, Templates0, Types> {
 public:
  static bool Register(const char* /*prefix*/, CodeLocation,
                       const TypedTestCasePState* /*state*/,
                       const char* /*case_name*/, const char* /*test_names*/) {
    return true;
  }
};

#endif  // GTEST_HAS_TYPED_TEST || GTEST_HAS_TYPED_TEST_P

// Returns the current OS stack trace as an std::string.
//
// The maximum number of stack frames to be included is specified by
// the gtest_stack_trace_depth flag.  The skip_count parameter
// specifies the number of top frames to be skipped, which doesn't
// count against the number of frames to be included.
//
// For example, if Foo() calls Bar(), which in turn calls
// GetCurrentOsStackTraceExceptTop(..., 1), Foo() will be included in
// the trace but Bar() and GetCurrentOsStackTraceExceptTop() won't.
GTEST_API_ std::string GetCurrentOsStackTraceExceptTop(
    UnitTest* unit_test, int skip_count);

// Helpers for suppressing warnings on unreachable code or constant
// condition.

// Always returns true.
GTEST_API_ bool AlwaysTrue();

// Always returns false.
inline bool AlwaysFalse() { return !AlwaysTrue(); }

// Helper for suppressing false warning from Clang on a const char*
// variable declared in a conditional expression always being NULL in
// the else branch.
struct GTEST_API_ ConstCharPtr {
  ConstCharPtr(const char* str) : value(str) {}
  operator bool() const { return true; }
  const char* value;
};

libcares/test/gmock-1.8.0/gtest/gtest.h view on Meta::CPAN

// DeathTest is a class that hides much of the complexity of the
// GTEST_DEATH_TEST_ macro.  It is abstract; its static Create method
// returns a concrete class that depends on the prevailing death test
// style, as defined by the --gtest_death_test_style and/or
// --gtest_internal_run_death_test flags.

// In describing the results of death tests, these terms are used with
// the corresponding definitions:
//
// exit status:  The integer exit information in the format specified
//               by wait(2)
// exit code:    The integer code passed to exit(3), _exit(2), or
//               returned from main()
class GTEST_API_ DeathTest {
 public:
  // Create returns false if there was an error determining the
  // appropriate action to take for the current death test; for example,
  // if the gtest_death_test_style flag is set to an invalid value.
  // The LastMessage method will return a more detailed message in that
  // case.  Otherwise, the DeathTest pointer pointed to by the "test"
  // argument is set.  If the death test should be skipped, the pointer
  // is set to NULL; otherwise, it is set to the address of a new concrete
  // DeathTest object that controls the execution of the current test.
  static bool Create(const char* statement, const RE* regex,
                     const char* file, int line, DeathTest** test);
  DeathTest();
  virtual ~DeathTest() { }

  // A helper class that aborts a death test when it's deleted.
  class ReturnSentinel {
   public:
    explicit ReturnSentinel(DeathTest* test) : test_(test) { }
    ~ReturnSentinel() { test_->Abort(TEST_ENCOUNTERED_RETURN_STATEMENT); }
   private:
    DeathTest* const test_;
    GTEST_DISALLOW_COPY_AND_ASSIGN_(ReturnSentinel);
  } GTEST_ATTRIBUTE_UNUSED_;

  // An enumeration of possible roles that may be taken when a death
  // test is encountered.  EXECUTE means that the death test logic should
  // be executed immediately.  OVERSEE means that the program should prepare
  // the appropriate environment for a child process to execute the death
  // test, then wait for it to complete.
  enum TestRole { OVERSEE_TEST, EXECUTE_TEST };

  // An enumeration of the three reasons that a test might be aborted.
  enum AbortReason {
    TEST_ENCOUNTERED_RETURN_STATEMENT,
    TEST_THREW_EXCEPTION,
    TEST_DID_NOT_DIE
  };

  // Assumes one of the above roles.
  virtual TestRole AssumeRole() = 0;

  // Waits for the death test to finish and returns its status.
  virtual int Wait() = 0;

  // Returns true if the death test passed; that is, the test process
  // exited during the test, its exit status matches a user-supplied
  // predicate, and its stderr output matches a user-supplied regular
  // expression.
  // The user-supplied predicate may be a macro expression rather
  // than a function pointer or functor, or else Wait and Passed could
  // be combined.
  virtual bool Passed(bool exit_status_ok) = 0;

  // Signals that the death test did not die as expected.
  virtual void Abort(AbortReason reason) = 0;

  // Returns a human-readable outcome message regarding the outcome of
  // the last death test.
  static const char* LastMessage();

  static void set_last_death_test_message(const std::string& message);

 private:
  // A string containing a description of the outcome of the last death test.
  static std::string last_death_test_message_;

  GTEST_DISALLOW_COPY_AND_ASSIGN_(DeathTest);
};

// Factory interface for death tests.  May be mocked out for testing.
class DeathTestFactory {
 public:
  virtual ~DeathTestFactory() { }
  virtual bool Create(const char* statement, const RE* regex,
                      const char* file, int line, DeathTest** test) = 0;
};

// A concrete DeathTestFactory implementation for normal use.
class DefaultDeathTestFactory : public DeathTestFactory {
 public:
  virtual bool Create(const char* statement, const RE* regex,
                      const char* file, int line, DeathTest** test);
};

// Returns true if exit_status describes a process that was terminated
// by a signal, or exited normally with a nonzero exit code.
GTEST_API_ bool ExitedUnsuccessfully(int exit_status);

// Traps C++ exceptions escaping statement and reports them as test
// failures. Note that trapping SEH exceptions is not implemented here.
# if GTEST_HAS_EXCEPTIONS
#  define GTEST_EXECUTE_DEATH_TEST_STATEMENT_(statement, death_test) \
  try { \
    GTEST_SUPPRESS_UNREACHABLE_CODE_WARNING_BELOW_(statement); \
  } catch (const ::std::exception& gtest_exception) { \
    fprintf(\
        stderr, \
        "\n%s: Caught std::exception-derived exception escaping the " \
        "death test statement. Exception message: %s\n", \
        ::testing::internal::FormatFileLocation(__FILE__, __LINE__).c_str(), \
        gtest_exception.what()); \
    fflush(stderr); \
    death_test->Abort(::testing::internal::DeathTest::TEST_THREW_EXCEPTION); \
  } catch (...) { \
    death_test->Abort(::testing::internal::DeathTest::TEST_THREW_EXCEPTION); \
  }

# else
#  define GTEST_EXECUTE_DEATH_TEST_STATEMENT_(statement, death_test) \
  GTEST_SUPPRESS_UNREACHABLE_CODE_WARNING_BELOW_(statement)

# endif

// This macro is for implementing ASSERT_DEATH*, EXPECT_DEATH*,
// ASSERT_EXIT*, and EXPECT_EXIT*.
# define GTEST_DEATH_TEST_(statement, predicate, regex, fail) \
  GTEST_AMBIGUOUS_ELSE_BLOCKER_ \
  if (::testing::internal::AlwaysTrue()) { \
    const ::testing::internal::RE& gtest_regex = (regex); \
    ::testing::internal::DeathTest* gtest_dt; \
    if (!::testing::internal::DeathTest::Create(#statement, &gtest_regex, \
        __FILE__, __LINE__, &gtest_dt)) { \
      goto GTEST_CONCAT_TOKEN_(gtest_label_, __LINE__); \
    } \
    if (gtest_dt != NULL) { \
      ::testing::internal::scoped_ptr< ::testing::internal::DeathTest> \
          gtest_dt_ptr(gtest_dt); \
      switch (gtest_dt->AssumeRole()) { \
        case ::testing::internal::DeathTest::OVERSEE_TEST: \
          if (!gtest_dt->Passed(predicate(gtest_dt->Wait()))) { \
            goto GTEST_CONCAT_TOKEN_(gtest_label_, __LINE__); \
          } \
          break; \
        case ::testing::internal::DeathTest::EXECUTE_TEST: { \
          ::testing::internal::DeathTest::ReturnSentinel \
              gtest_sentinel(gtest_dt); \
          GTEST_EXECUTE_DEATH_TEST_STATEMENT_(statement, gtest_dt); \
          gtest_dt->Abort(::testing::internal::DeathTest::TEST_DID_NOT_DIE); \
          break; \
        } \
        default: \
          break; \
      } \
    } \
  } else \
    GTEST_CONCAT_TOKEN_(gtest_label_, __LINE__): \
      fail(::testing::internal::DeathTest::LastMessage())
// The symbol "fail" here expands to something into which a message
// can be streamed.

// This macro is for implementing ASSERT/EXPECT_DEBUG_DEATH when compiled in
// NDEBUG mode. In this case we need the statements to be executed, the regex is
// ignored, and the macro must accept a streamed message even though the message
// is never printed.
# define GTEST_EXECUTE_STATEMENT_(statement, regex) \
  GTEST_AMBIGUOUS_ELSE_BLOCKER_ \
  if (::testing::internal::AlwaysTrue()) { \
     GTEST_SUPPRESS_UNREACHABLE_CODE_WARNING_BELOW_(statement); \
  } else \
    ::testing::Message()

// A class representing the parsed contents of the

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