Function HasOneFailure

tests/gtest/gtest-all.cc:2139–2173

This predicate-formatter checks that 'results' contains a test part failure of the given type and that the failure message contains the given substring.

// failure of the given type and that the failure message contains the
// given substring.
static AssertionResult HasOneFailure(const char* /* results_expr */,
                                     const char* /* type_expr */,
                                     const char* /* substr_expr */,
                                     const TestPartResultArray& results,
                                     TestPartResult::Type type,
                                     const std::string& substr) {
  const std::string expected(type == TestPartResult::kFatalFailure ?
                        "1 fatal failure" :
                        "1 non-fatal failure");
  Message msg;
  if (results.size() != 1) {
    msg << "Expected: " << expected << "\n"
        << "  Actual: " << results.size() << " failures";
    for (int i = 0; i < results.size(); i++) {
      msg << "\n" << results.GetTestPartResult(i);
    }
    return AssertionFailure() << msg;
  }

  const TestPartResult& r = results.GetTestPartResult(0);
  if (r.type() != type) {
    return AssertionFailure() << "Expected: " << expected << "\n"
                              << "  Actual:\n"
                              << r;
  }

  if (strstr(r.message(), substr.c_str()) == nullptr) {
    return AssertionFailure() << "Expected: " << expected << " containing \""
                              << substr << "\"\n"
                              << "  Actual:\n"
                              << r;
  }

  return AssertionSuccess();
}

// The constructor of SingleFailureChecker remembers where to look up
// test part results, what type of failure we expect, and what