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// test.h -- simplistic test framework for gold unittests -*- C++ -*-

// Copyright 2006, 2007, 2008 Free Software Foundation, Inc.

// Written by Ian Lance Taylor <iant@google.com>.

// This file is part of gold.

// This program is free software; you can redistribute it and/or modify

// it under the terms of the GNU General Public License as published by

// the Free Software Foundation; either version 3 of the License, or

// (at your option) any later version.

// This program is distributed in the hope that it will be useful,

// but WITHOUT ANY WARRANTY; without even the implied warranty of

// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

// GNU General Public License for more details.

// You should have received a copy of the GNU General Public License

// along with this program; if not, write to the Free Software

// Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,

// MA 02110-1301, USA.

#ifndef GOLD_TESTSUITE_TEST_H

#define GOLD_TESTSUITE_TEST_H

namespace gold_testsuite

{

class Test_report;

// This class handles basic test framework functionality.

class Test_framework

{

 public:

  Test_framework()

    : testname_(NULL), current_fail_(0), passes_(0), failures_(0)

  { }

  // Return number of failures.

  unsigned int

  failures() const

  { return this->failures_; }

  // Run a test.

  void

  run(const char* name, bool (*pfn)(Test_report*));

  // Get the current Test_report.  This is used by the test support

  // macros.

  static Test_report*

  report()

  { return Test_framework::current_report; }

 private:

  friend class Test_report;

  // Cause the current test to fail.

  void

  fail(const char* filename, int lineno);

  // Report an error from the current test.

  void

  error(const char* message);

  // Current Test_report.  This is a static variable valid while a

  // test is being run.

  static Test_report* current_report;

  // Current test being run.

  const char* testname_;

  // Whether the current test is failing.

  bool current_fail_;

  // Total number of passeed tests.

  unsigned int passes_;

  // Total number of failed tests.

  unsigned int failures_;

};

// An instance of this class is passed to each test function.

class Test_report

{

public:

  Test_report(Test_framework* tf)

    : tf_(tf)

  { }

  // Mark the test as failing.

  void

  fail(const char* filename, int lineno)

  { this->tf_->fail(filename, lineno); }

  // Report an error.

  void

  error(const char* message)

  { this->tf_->error(message); }

private:

  Test_framework* tf_;

};

// This class registers a test function so that the testsuite runs it.

class Register_test

{

 public:

  Register_test(const char* name, bool (*pfn)(Test_report*));

  // Run all registered tests.

  static void

  run_tests(Test_framework*);

 private:

  // Linked list of all tests.

  static Register_test* all_tests;

  // Test name.

  const char* name_;

  // Function to call.  It should return true if the test passes,

  // false if it fails.

  bool (*pfn_)(Test_report*);

  // Next test in linked list.

  Register_test* next_;

};

} // End namespace gold_testsuite.

// These macros are for convenient use in tests.

// Check that a condition is true.  If it is false, report a failure.

#define CHECK(cond)                                                     \

  ((void)                                                               \

   ((cond)                                                              \

    ? 0                                                                  \

    : (::gold_testsuite::Test_framework::report()->fail(__FILE__,       \

                                                        __LINE__),      \

       0)))

// Report an error during a test.

#define ERROR(msg) (::gold_testsuite::Test_framework::report()->error(msg))

#endif // !defined(GOLD_TESTSUITE_TEST_H)