File: test.h

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/*
 * Copyright 2010 The Native Client Authors. All rights reserved.
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */

#ifndef TESTS_SYSCALLS_TEST_H_
#define TESTS_SYSCALLS_TEST_H_

//  Some simple functions to help with testing.  See below for some macros that
//  make for a very simple test framework.

namespace test {
  // Print a failure message and return false, including a file name and line
  // number in the message that is printed.
  bool Failed(const char *testname,
              const char *msg,
              const char* file,
              int line);
  // Print a failure message and return false.
  bool Failed(const char *testname, const char *msg);


  // Call this to print a message and return true.  Note that this message
  // should not contain data specific to an instance of a test run, so that
  // golden output can be used if desired.
  bool Passed(const char *testname, const char *msg);
}

// Simple test framework macros, as a poor man's gtest for untrusted NaCl code.
//
// A test program looks like this:
//
// int TestFoo() {
//   START_TEST("Test Foo");
//   EXPECT(Foo::ReturnTrue());
//   EXPECT(Foo::ReturnFive == 5);
//   END_TEST();
// }
//
// int TestBar() {
//   START_TEST("Test Bar");
//   EXPECT(!Bar::ReturnFalse());
//   END_TEST();
// }
//
// int main() {
//   int fail_count = 0;
//   fail_count += TestFoo();
//   fail_count += TestBar();
//   std::exit(fail_count);
// }
#define START_TEST(TESTNAME) \
    int _fail_count = 0; \
    const char* const _test_name = TESTNAME;

#define EXPECT(COND) \
{\
  if (COND) { \
    ::test::Passed(_test_name, #COND); \
  } else { \
    ::test::Failed(_test_name, #COND, __FILE__, __LINE__); \
    ++_fail_count; \
  } \
}

#define END_TEST() \
{ return _fail_count; }

#endif  // TESTS_SYSCALLS_TEST_H_