ceph/src/googletest/googlemock/src/gmock-internal-utils.cc

   1 // Copyright 2007, Google Inc.
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  28 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  29
  30
  31 // Google Mock - a framework for writing C++ mock classes.
  32 //
  33 // This file defines some utilities useful for implementing Google
  34 // Mock.  They are subject to change without notice, so please DO NOT
  35 // USE THEM IN USER CODE.
  36
  37 #include "gmock/internal/gmock-internal-utils.h"
  38
  39 #include <ctype.h>
  40 #include <ostream>  // NOLINT
  41 #include <string>
  42 #include "gmock/gmock.h"
  43 #include "gmock/internal/gmock-port.h"
  44 #include "gtest/gtest.h"
  45
  46 namespace testing {
  47 namespace internal {
  48
  49 // Joins a vector of strings as if they are fields of a tuple; returns
  50 // the joined string.
  51 GTEST_API_ std::string JoinAsTuple(const Strings& fields) {
  52   switch (fields.size()) {
  53     case 0:
  54       return "";
  55     case 1:
  56       return fields[0];
  57     default:
  58       std::string result = "(" + fields[0];
  59       for (size_t i = 1; i < fields.size(); i++) {
  60         result += ", ";
  61         result += fields[i];
  62       }
  63       result += ")";
  64       return result;
  65   }
  66 }
  67
  68 // Converts an identifier name to a space-separated list of lower-case
  69 // words.  Each maximum substring of the form [A-Za-z][a-z]*|\d+ is
  70 // treated as one word.  For example, both "FooBar123" and
  71 // "foo_bar_123" are converted to "foo bar 123".
  72 GTEST_API_ std::string ConvertIdentifierNameToWords(const char* id_name) {
  73   std::string result;
  74   char prev_char = '\0';
  75   for (const char* p = id_name; *p != '\0'; prev_char = *(p++)) {
  76     // We don't care about the current locale as the input is
  77     // guaranteed to be a valid C++ identifier name.
  78     const bool starts_new_word = IsUpper(*p) ||
  79         (!IsAlpha(prev_char) && IsLower(*p)) ||
  80         (!IsDigit(prev_char) && IsDigit(*p));
  81
  82     if (IsAlNum(*p)) {
  83       if (starts_new_word && result != "")
  84         result += ' ';
  85       result += ToLower(*p);
  86     }
  87   }
  88   return result;
  89 }
  90
  91 // This class reports Google Mock failures as Google Test failures.  A
  92 // user can define another class in a similar fashion if they intend to
  93 // use Google Mock with a testing framework other than Google Test.
  94 class GoogleTestFailureReporter : public FailureReporterInterface {
  95  public:
  96   void ReportFailure(FailureType type, const char* file, int line,
  97                      const std::string& message) override {
  98     AssertHelper(type == kFatal ?
  99                  TestPartResult::kFatalFailure :
 100                  TestPartResult::kNonFatalFailure,
 101                  file,
 102                  line,
 103                  message.c_str()) = Message();
 104     if (type == kFatal) {
 105       posix::Abort();
 106     }
 107   }
 108 };
 109
 110 // Returns the global failure reporter.  Will create a
 111 // GoogleTestFailureReporter and return it the first time called.
 112 GTEST_API_ FailureReporterInterface* GetFailureReporter() {
 113   // Points to the global failure reporter used by Google Mock.  gcc
 114   // guarantees that the following use of failure_reporter is
 115   // thread-safe.  We may need to add additional synchronization to
 116   // protect failure_reporter if we port Google Mock to other
 117   // compilers.
 118   static FailureReporterInterface* const failure_reporter =
 119       new GoogleTestFailureReporter();
 120   return failure_reporter;
 121 }
 122
 123 // Protects global resources (stdout in particular) used by Log().
 124 static GTEST_DEFINE_STATIC_MUTEX_(g_log_mutex);
 125
 126 // Returns true if and only if a log with the given severity is visible
 127 // according to the --gmock_verbose flag.
 128 GTEST_API_ bool LogIsVisible(LogSeverity severity) {
 129   if (GMOCK_FLAG(verbose) == kInfoVerbosity) {
 130     // Always show the log if --gmock_verbose=info.
 131     return true;
 132   } else if (GMOCK_FLAG(verbose) == kErrorVerbosity) {
 133     // Always hide it if --gmock_verbose=error.
 134     return false;
 135   } else {
 136     // If --gmock_verbose is neither "info" nor "error", we treat it
 137     // as "warning" (its default value).
 138     return severity == kWarning;
 139   }
 140 }
 141
 142 // Prints the given message to stdout if and only if 'severity' >= the level
 143 // specified by the --gmock_verbose flag.  If stack_frames_to_skip >=
 144 // 0, also prints the stack trace excluding the top
 145 // stack_frames_to_skip frames.  In opt mode, any positive
 146 // stack_frames_to_skip is treated as 0, since we don't know which
 147 // function calls will be inlined by the compiler and need to be
 148 // conservative.
 149 GTEST_API_ void Log(LogSeverity severity, const std::string& message,
 150                     int stack_frames_to_skip) {
 151   if (!LogIsVisible(severity))
 152     return;
 153
 154   // Ensures that logs from different threads don't interleave.
 155   MutexLock l(&g_log_mutex);
 156
 157   if (severity == kWarning) {
 158     // Prints a GMOCK WARNING marker to make the warnings easily searchable.
 159     std::cout << "\nGMOCK WARNING:";
 160   }
 161   // Pre-pends a new-line to message if it doesn't start with one.
 162   if (message.empty() || message[0] != '\n') {
 163     std::cout << "\n";
 164   }
 165   std::cout << message;
 166   if (stack_frames_to_skip >= 0) {
 167 #ifdef NDEBUG
 168     // In opt mode, we have to be conservative and skip no stack frame.
 169     const int actual_to_skip = 0;
 170 #else
 171     // In dbg mode, we can do what the caller tell us to do (plus one
 172     // for skipping this function's stack frame).
 173     const int actual_to_skip = stack_frames_to_skip + 1;
 174 #endif  // NDEBUG
 175
 176     // Appends a new-line to message if it doesn't end with one.
 177     if (!message.empty() && *message.rbegin() != '\n') {
 178       std::cout << "\n";
 179     }
 180     std::cout << "Stack trace:\n"
 181          << ::testing::internal::GetCurrentOsStackTraceExceptTop(
 182              ::testing::UnitTest::GetInstance(), actual_to_skip);
 183   }
 184   std::cout << ::std::flush;
 185 }
 186
 187 GTEST_API_ WithoutMatchers GetWithoutMatchers() { return WithoutMatchers(); }
 188
 189 GTEST_API_ void IllegalDoDefault(const char* file, int line) {
 190   internal::Assert(
 191       false, file, line,
 192       "You are using DoDefault() inside a composite action like "
 193       "DoAll() or WithArgs().  This is not supported for technical "
 194       "reasons.  Please instead spell out the default action, or "
 195       "assign the default action to an Action variable and use "
 196       "the variable in various places.");
 197 }
 198
 199 }  // namespace internal
 200 }  // namespace testing