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// Parses the environment variable var as an Int32. If it is unset,
// returns default_val. If it is not an Int32, prints an error and
// and aborts.
GTEST_API_ Int32 Int32FromEnvOrDie(const char* env_var, Int32 default_val);

// Given the total number of shards, the shard index, and the test id,
// returns true iff the test should be run on this shard. The test id is
// some arbitrary but unique non-negative integer assigned to each test
// method. Assumes that 0 <= shard_index < total_shards.
GTEST_API_ bool ShouldRunTestOnShard(
    int total_shards, int shard_index, int test_id);

// STL container utilities.

// Returns the number of elements in the given container that satisfy
// the given predicate.
template <class Container, typename Predicate>
inline int CountIf(const Container& c, Predicate predicate) {
  // Implemented as an explicit loop since std::count_if() in libCstd on
  // Solaris has a non-standard signature.
  int count = 0;
  for (typename Container::const_iterator it = c.begin(); it != c.end(); ++it) {
    if (predicate(*it))
      ++count;
  }
  return count;
}

// Applies a function/functor to each element in the container.
template <class Container, typename Functor>
void ForEach(const Container& c, Functor functor) {
  std::for_each(c.begin(), c.end(), functor);
}

// Returns the i-th element of the vector, or default_value if i is not
// in range [0, v.size()).
template <typename E>
inline E GetElementOr(const std::vector<E>& v, int i, E default_value) {
  return (i < 0 || i >= static_cast<int>(v.size())) ? default_value : v[i];
}

// Performs an in-place shuffle of a range of the vector's elements.
// 'begin' and 'end' are element indices as an STL-style range;
// i.e. [begin, end) are shuffled, where 'end' == size() means to
// shuffle to the end of the vector.
template <typename E>
void ShuffleRange(internal::Random* random, int begin, int end,
                  std::vector<E>* v) {
  const int size = static_cast<int>(v->size());
  GTEST_CHECK_(0 <= begin && begin <= size)
      << "Invalid shuffle range start " << begin << ": must be in range [0, "
      << size << "].";
  GTEST_CHECK_(begin <= end && end <= size)
      << "Invalid shuffle range finish " << end << ": must be in range ["
      << begin << ", " << size << "].";

  // Fisher-Yates shuffle, from
  // http://en.wikipedia.org/wiki/Fisher-Yates_shuffle
  for (int range_width = end - begin; range_width >= 2; range_width--) {
    const int last_in_range = begin + range_width - 1;
    const int selected = begin + random->Generate(range_width);
    std::swap((*v)[selected], (*v)[last_in_range]);
  }
}

// Performs an in-place shuffle of the vector's elements.
template <typename E>
inline void Shuffle(internal::Random* random, std::vector<E>* v) {
  ShuffleRange(random, 0, static_cast<int>(v->size()), v);
}

// A function for deleting an object.  Handy for being used as a
// functor.
template <typename T>
static void Delete(T* x) {
  delete x;
}

// A predicate that checks the key of a TestProperty against a known key.
//
// TestPropertyKeyIs is copyable.
class TestPropertyKeyIs {
 public:
  // Constructor.
  //
  // TestPropertyKeyIs has NO default constructor.
  explicit TestPropertyKeyIs(const std::string& key) : key_(key) {}

  // Returns true iff the test name of test property matches on key_.
  bool operator()(const TestProperty& test_property) const {
    return test_property.key() == key_;
  }

 private:
  std::string key_;
};

// Class UnitTestOptions.
//
// This class contains functions for processing options the user
// specifies when running the tests.  It has only static members.
//
// In most cases, the user can specify an option using either an
// environment variable or a command line flag.  E.g. you can set the
// test filter using either GTEST_FILTER or --gtest_filter.  If both
// the variable and the flag are present, the latter overrides the
// former.
class GTEST_API_ UnitTestOptions {
 public:
  // Functions for processing the gtest_output flag.

  // Returns the output format, or "" for normal printed output.
  static std::string GetOutputFormat();

  // Returns the absolute path of the requested output file, or the
  // default (test_detail.xml in the original working directory) if
  // none was explicitly specified.
  static std::string GetAbsolutePathToOutputFile();

  // Functions for processing the gtest_filter flag.

  // Returns true iff the wildcard pattern matches the string.  The

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

// Helper function for *_STRNE on wide strings.
AssertionResult CmpHelperSTRNE(const char* s1_expression,
                               const char* s2_expression,
                               const wchar_t* s1,
                               const wchar_t* s2) {
  if (!String::WideCStringEquals(s1, s2)) {
    return AssertionSuccess();
  }

  return AssertionFailure() << "Expected: (" << s1_expression << ") != ("
                            << s2_expression << "), actual: "
                            << PrintToString(s1)
                            << " vs " << PrintToString(s2);
}

// Compares two C strings, ignoring case.  Returns true iff they have
// the same content.
//
// Unlike strcasecmp(), this function can handle NULL argument(s).  A
// NULL C string is considered different to any non-NULL C string,
// including the empty string.
bool String::CaseInsensitiveCStringEquals(const char * lhs, const char * rhs) {
  if (lhs == NULL)
    return rhs == NULL;
  if (rhs == NULL)
    return false;
  return posix::StrCaseCmp(lhs, rhs) == 0;
}

  // Compares two wide C strings, ignoring case.  Returns true iff they
  // have the same content.
  //
  // Unlike wcscasecmp(), this function can handle NULL argument(s).
  // A NULL C string is considered different to any non-NULL wide C string,
  // including the empty string.
  // NB: The implementations on different platforms slightly differ.
  // On windows, this method uses _wcsicmp which compares according to LC_CTYPE
  // environment variable. On GNU platform this method uses wcscasecmp
  // which compares according to LC_CTYPE category of the current locale.
  // On MacOS X, it uses towlower, which also uses LC_CTYPE category of the
  // current locale.
bool String::CaseInsensitiveWideCStringEquals(const wchar_t* lhs,
                                              const wchar_t* rhs) {
  if (lhs == NULL) return rhs == NULL;

  if (rhs == NULL) return false;

#if GTEST_OS_WINDOWS
  return _wcsicmp(lhs, rhs) == 0;
#elif GTEST_OS_LINUX && !GTEST_OS_LINUX_ANDROID
  return wcscasecmp(lhs, rhs) == 0;
#else
  // Android, Mac OS X and Cygwin don't define wcscasecmp.
  // Other unknown OSes may not define it either.
  wint_t left, right;
  do {
    left = towlower(*lhs++);
    right = towlower(*rhs++);
  } while (left && left == right);
  return left == right;
#endif  // OS selector
}

// Returns true iff str ends with the given suffix, ignoring case.
// Any string is considered to end with an empty suffix.
bool String::EndsWithCaseInsensitive(
    const std::string& str, const std::string& suffix) {
  const size_t str_len = str.length();
  const size_t suffix_len = suffix.length();
  return (str_len >= suffix_len) &&
         CaseInsensitiveCStringEquals(str.c_str() + str_len - suffix_len,
                                      suffix.c_str());
}

// Formats an int value as "%02d".
std::string String::FormatIntWidth2(int value) {
  std::stringstream ss;
  ss << std::setfill('0') << std::setw(2) << value;
  return ss.str();
}

// Formats an int value as "%X".
std::string String::FormatHexInt(int value) {
  std::stringstream ss;
  ss << std::hex << std::uppercase << value;
  return ss.str();
}

// Formats a byte as "%02X".
std::string String::FormatByte(unsigned char value) {
  std::stringstream ss;
  ss << std::setfill('0') << std::setw(2) << std::hex << std::uppercase
     << static_cast<unsigned int>(value);
  return ss.str();
}

// Converts the buffer in a stringstream to an std::string, converting NUL
// bytes to "\\0" along the way.
std::string StringStreamToString(::std::stringstream* ss) {
  const ::std::string& str = ss->str();
  const char* const start = str.c_str();
  const char* const end = start + str.length();

  std::string result;
  result.reserve(2 * (end - start));
  for (const char* ch = start; ch != end; ++ch) {
    if (*ch == '\0') {
      result += "\\0";  // Replaces NUL with "\\0";
    } else {
      result += *ch;
    }
  }

  return result;
}

// Appends the user-supplied message to the Google-Test-generated message.
std::string AppendUserMessage(const std::string& gtest_msg,
                              const Message& user_msg) {
  // Appends the user message if it's non-empty.
  const std::string user_msg_string = user_msg.GetString();

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

      << "Invalid environment variables: you have "
      << kTestTotalShards << " = " << total_shards
      << ", but have left " << kTestShardIndex << " unset.\n";
    ColoredPrintf(COLOR_RED, msg.GetString().c_str());
    fflush(stdout);
    exit(EXIT_FAILURE);
  } else if (shard_index < 0 || shard_index >= total_shards) {
    const Message msg = Message()
      << "Invalid environment variables: we require 0 <= "
      << kTestShardIndex << " < " << kTestTotalShards
      << ", but you have " << kTestShardIndex << "=" << shard_index
      << ", " << kTestTotalShards << "=" << total_shards << ".\n";
    ColoredPrintf(COLOR_RED, msg.GetString().c_str());
    fflush(stdout);
    exit(EXIT_FAILURE);
  }

  return total_shards > 1;
}

// Parses the environment variable var as an Int32. If it is unset,
// returns default_val. If it is not an Int32, prints an error
// and aborts.
Int32 Int32FromEnvOrDie(const char* var, Int32 default_val) {
  const char* str_val = posix::GetEnv(var);
  if (str_val == NULL) {
    return default_val;
  }

  Int32 result;
  if (!ParseInt32(Message() << "The value of environment variable " << var,
                  str_val, &result)) {
    exit(EXIT_FAILURE);
  }
  return result;
}

// Given the total number of shards, the shard index, and the test id,
// returns true iff the test should be run on this shard. The test id is
// some arbitrary but unique non-negative integer assigned to each test
// method. Assumes that 0 <= shard_index < total_shards.
bool ShouldRunTestOnShard(int total_shards, int shard_index, int test_id) {
  return (test_id % total_shards) == shard_index;
}

// Compares the name of each test with the user-specified filter to
// decide whether the test should be run, then records the result in
// each TestCase and TestInfo object.
// If shard_tests == true, further filters tests based on sharding
// variables in the environment - see
// http://code.google.com/p/googletest/wiki/GoogleTestAdvancedGuide.
// Returns the number of tests that should run.
int UnitTestImpl::FilterTests(ReactionToSharding shard_tests) {
  const Int32 total_shards = shard_tests == HONOR_SHARDING_PROTOCOL ?
      Int32FromEnvOrDie(kTestTotalShards, -1) : -1;
  const Int32 shard_index = shard_tests == HONOR_SHARDING_PROTOCOL ?
      Int32FromEnvOrDie(kTestShardIndex, -1) : -1;

  // num_runnable_tests are the number of tests that will
  // run across all shards (i.e., match filter and are not disabled).
  // num_selected_tests are the number of tests to be run on
  // this shard.
  int num_runnable_tests = 0;
  int num_selected_tests = 0;
  for (size_t i = 0; i < test_cases_.size(); i++) {
    TestCase* const test_case = test_cases_[i];
    const std::string &test_case_name = test_case->name();
    test_case->set_should_run(false);

    for (size_t j = 0; j < test_case->test_info_list().size(); j++) {
      TestInfo* const test_info = test_case->test_info_list()[j];
      const std::string test_name(test_info->name());
      // A test is disabled if test case name or test name matches
      // kDisableTestFilter.
      const bool is_disabled =
          internal::UnitTestOptions::MatchesFilter(test_case_name,
                                                   kDisableTestFilter) ||
          internal::UnitTestOptions::MatchesFilter(test_name,
                                                   kDisableTestFilter);
      test_info->is_disabled_ = is_disabled;

      const bool matches_filter =
          internal::UnitTestOptions::FilterMatchesTest(test_case_name,
                                                       test_name);
      test_info->matches_filter_ = matches_filter;

      const bool is_runnable =
          (GTEST_FLAG(also_run_disabled_tests) || !is_disabled) &&
          matches_filter;

      const bool is_selected = is_runnable &&
          (shard_tests == IGNORE_SHARDING_PROTOCOL ||
           ShouldRunTestOnShard(total_shards, shard_index,
                                num_runnable_tests));

      num_runnable_tests += is_runnable;
      num_selected_tests += is_selected;

      test_info->should_run_ = is_selected;
      test_case->set_should_run(test_case->should_run() || is_selected);
    }
  }
  return num_selected_tests;
}

// Prints the given C-string on a single line by replacing all '\n'
// characters with string "\\n".  If the output takes more than
// max_length characters, only prints the first max_length characters
// and "...".
static void PrintOnOneLine(const char* str, int max_length) {
  if (str != NULL) {
    for (int i = 0; *str != '\0'; ++str) {
      if (i >= max_length) {
        printf("...");
        break;
      }
      if (*str == '\n') {
        printf("\\n");
        i += 2;
      } else {
        printf("%c", *str);
        ++i;
      }
    }
  }
}

// Prints the names of the tests matching the user-specified filter flag.
void UnitTestImpl::ListTestsMatchingFilter() {
  // Print at most this many characters for each type/value parameter.
  const int kMaxParamLength = 250;

  for (size_t i = 0; i < test_cases_.size(); i++) {
    const TestCase* const test_case = test_cases_[i];
    bool printed_test_case_name = false;

    for (size_t j = 0; j < test_case->test_info_list().size(); j++) {
      const TestInfo* const test_info =
          test_case->test_info_list()[j];
      if (test_info->matches_filter_) {
        if (!printed_test_case_name) {
          printed_test_case_name = true;
          printf("%s.", test_case->name());
          if (test_case->type_param() != NULL) {
            printf("  # %s = ", kTypeParamLabel);
            // We print the type parameter on a single line to make
            // the output easy to parse by a program.
            PrintOnOneLine(test_case->type_param(), kMaxParamLength);
          }
          printf("\n");
        }
        printf("  %s", test_info->name());
        if (test_info->value_param() != NULL) {
          printf("  # %s = ", kValueParamLabel);
          // We print the value parameter on a single line to make the
          // output easy to parse by a program.
          PrintOnOneLine(test_info->value_param(), kMaxParamLength);
        }
        printf("\n");
      }
    }
  }
  fflush(stdout);

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