message: Added option to fail on missing testdata
diff: @@ -721,6 +721,7 @@ void checkIppStatus()
  }
  }
  +static bool checkTestData = false;
  bool skipUnstableTests = false;
  bool runBigDataTests = false;
  int testThreads = 0;
  @@ -733,6 +734,7 @@ void parseCustomOptions(int argc, char **argv)
  "{ test_threads |-1 |the number of worker threads, if parallel execution is enabled}"
  "{ skip_unstable |false |skip unstable tests }"
  "{ test_bigdata |false |run BigData tests (>=2Gb) }"
  + "{ test_require_data |false |fail on missing non-required test data instead of skip}"
  "{ h help |false |print help info }";
  cv::CommandLineParser parser(argc, argv, command_line_keys);
  @@ -756,6 +758,7 @@ void parseCustomOptions(int argc, char **argv)
  skipUnstableTests = parser.get<bool>("skip_unstable");
  runBigDataTests = parser.get<bool>("test_bigdata");
  + checkTestData = parser.get<bool>("test_require_data");
  }
  @@ -870,7 +873,7 @@ static std::string findData(const std::string& relative_path, bool required, boo
  #endif
  #endif
  const char* type = findDirectory ? "directory" : "data file";
  - if (required)
  + if (required || checkTestData)
  CV_Error(cv::Error::StsError, cv::format("OpenCV tests: Can't find required %s: %s", type, relative_path.c_str()));
  throw SkipTestException(cv::format("OpenCV tests: Can't find %s: %s", type, relative_path.c_str()));
  }
  