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  1. // Copyright 2007, Google Inc.
  2. // All rights reserved.
  3. //
  4. // Redistribution and use in source and binary forms, with or without
  5. // modification, are permitted provided that the following conditions are
  6. // met:
  7. //
  8. //     * Redistributions of source code must retain the above copyright
  9. // notice, this list of conditions and the following disclaimer.
  10. //     * Redistributions in binary form must reproduce the above
  11. // copyright notice, this list of conditions and the following disclaimer
  12. // in the documentation and/or other materials provided with the
  13. // distribution.
  14. //     * Neither the name of Google Inc. nor the names of its
  15. // contributors may be used to endorse or promote products derived from
  16. // this software without specific prior written permission.
  17. //
  18. // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  19. // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  20. // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  21. // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  22. // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  23. // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  24. // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  25. // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  26. // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  27. // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  28. // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  29.  
  30.  
  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.   virtual void ReportFailure(FailureType type, const char* file, int line,
  97.                              const std::string& message) {
  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 iff a log with the given severity is visible according
  127. // 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 iff '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.   // "using ::std::cout;" doesn't work with Symbian's STLport, where cout is a
  158.   // macro.
  159.  
  160.   if (severity == kWarning) {
  161.     // Prints a GMOCK WARNING marker to make the warnings easily searchable.
  162.     std::cout << "\nGMOCK WARNING:";
  163.   }
  164.   // Pre-pends a new-line to message if it doesn't start with one.
  165.   if (message.empty() || message[0] != '\n') {
  166.     std::cout << "\n";
  167.   }
  168.   std::cout << message;
  169.   if (stack_frames_to_skip >= 0) {
  170. #ifdef NDEBUG
  171.     // In opt mode, we have to be conservative and skip no stack frame.
  172.     const int actual_to_skip = 0;
  173. #else
  174.     // In dbg mode, we can do what the caller tell us to do (plus one
  175.     // for skipping this function's stack frame).
  176.     const int actual_to_skip = stack_frames_to_skip + 1;
  177. #endif  // NDEBUG
  178.  
  179.     // Appends a new-line to message if it doesn't end with one.
  180.     if (!message.empty() && *message.rbegin() != '\n') {
  181.       std::cout << "\n";
  182.     }
  183.     std::cout << "Stack trace:\n"
  184.          << ::testing::internal::GetCurrentOsStackTraceExceptTop(
  185.              ::testing::UnitTest::GetInstance(), actual_to_skip);
  186.   }
  187.   std::cout << ::std::flush;
  188. }
  189.  
  190. GTEST_API_ WithoutMatchers GetWithoutMatchers() { return WithoutMatchers(); }
  191.  
  192. GTEST_API_ void IllegalDoDefault(const char* file, int line) {
  193.   internal::Assert(
  194.       false, file, line,
  195.       "You are using DoDefault() inside a composite action like "
  196.       "DoAll() or WithArgs().  This is not supported for technical "
  197.       "reasons.  Please instead spell out the default action, or "
  198.       "assign the default action to an Action variable and use "
  199.       "the variable in various places.");
  200. }
  201.  
  202. }  // namespace internal
  203. }  // namespace testing
  204.