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// Copyright 2009, Google Inc.

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//

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// Author: wan@google.com (Zhanyong Wan)

// Tests Google Test's throw-on-failure mode with exceptions enabled.

#include "gtest/gtest.h"

#include <stdlib.h>

#include <stdio.h>

#include <string.h>

#include <stdexcept>

// Prints the given failure message and exits the program with

// non-zero.  We use this instead of a Google Test assertion to

// indicate a failure, as the latter is been tested and cannot be

// relied on.

void Fail(const char* msg) {

  printf("FAILURE: %s\n", msg);

  fflush(stdout);

  exit(1);

}

// Tests that an assertion failure throws a subclass of

// std::runtime_error.

void TestFailureThrowsRuntimeError() {

  testing::GTEST_FLAG(throw_on_failure) = true;

  // A successful assertion shouldn't throw.

  try {

    EXPECT_EQ(3, 3);

  } catch(...) {

    Fail("A successful assertion wrongfully threw.");

  }

  // A failed assertion should throw a subclass of std::runtime_error.

  try {

    EXPECT_EQ(2, 3) << "Expected failure";

  } catch(const std::runtime_error& e) {

    if (strstr(e.what(), "Expected failure") != NULL)

      return;

    printf("%s",

           "A failed assertion did throw an exception of the right type, "

           "but the message is incorrect.  Instead of containing \"Expected "

           "failure\", it is:\n");

    Fail(e.what());

  } catch(...) {

    Fail("A failed assertion threw the wrong type of exception.");

  }

  Fail("A failed assertion should've thrown but didn't.");

}

int main(int argc, char** argv) {

  testing::InitGoogleTest(&argc, argv);

  // We want to ensure that people can use Google Test assertions in

  // other testing frameworks, as long as they initialize Google Test

  // properly and set the thrown-on-failure mode.  Therefore, we don't

  // use Google Test's constructs for defining and running tests

  // (e.g. TEST and RUN_ALL_TESTS) here.

  TestFailureThrowsRuntimeError();

  return 0;

}