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//==========================================================================

//

//      tassert7.cxx

//

//      Assertion test case                                                                

//

//==========================================================================

//####COPYRIGHTBEGIN####

//                                                                          

// ----------------------------------------------------------------------------

// Copyright (C) 1998, 1999, 2000 Red Hat, Inc.

//

// This file is part of the eCos host tools.

//

// 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 2 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., 

// 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.

//

// ----------------------------------------------------------------------------

//                                                                          

//####COPYRIGHTEND####

//==========================================================================

//#####DESCRIPTIONBEGIN####                                             

//

// Author(s):           bartv

// Contributors:        bartv

// Date:                1998-12-23

// Purpose:

// Description:         This routine checks the invariant assertions.

//                      The entry tests will have been taken care of by

//                      tassert6.cxx, but it is also necessary to check

//                      the exit tests.

//

//####DESCRIPTIONEND####

//==========================================================================

#define CYG_DECLARE_HOST_ASSERTION_SUPPORT

#define CYGDBG_USE_ASSERTS

#define CYGDBG_INFRA_DEBUG_PRECONDITIONS

#define CYGDBG_INFRA_DEBUG_POSTCONDITIONS

#define CYGDBG_INFRA_DEBUG_LOOP_INVARIANTS

#define CYGDBG_INFRA_DEBUG_INVARIANTS

#include <cyg/infra/testcase.h>

#include <cyg/infra/cyg_ass.h>

#include <cstdlib>

#include <csetjmp>

#include <cstring>

// This is used to "recover" from an assertion failure

static jmp_buf setjmp_buffer;

// The number of assertions that have triggered.

static int failed_assertions = 0;

// The number of assertions that have been triggered.

static int counter = 0;

// Are objects currently valid?

static bool check_this_should_fail = false;

static const char message[] = "so long and thanks for all the fish";

class dummy {

  private:

    int         random;

  public:

    dummy() {

        random = rand();

    }

    ~dummy() {

        random = 0;

    }

    void invariant1();

    void invariant2();

    static void invariant3(dummy&);

    static void invariant4(dummy&);

    static void invariant5(dummy*);

    static void invariant6(dummy*);

    bool check_this(cyg_assert_class_zeal) const;

};

bool

dummy::check_this(cyg_assert_class_zeal zeal) const

{

    // The default zeal should be cyg_quick.

    switch(zeal) {

    case cyg_quick:

        return !check_this_should_fail;

    case cyg_system_test:

    case cyg_extreme:

    case cyg_thorough:

    case cyg_trivial:

    case cyg_none:

        CYG_TEST_FAIL_FINISH("incorrect default zeal passed to check_this() member function");

        break;

    default:

        CYG_TEST_FAIL_FINISH("invalid zeal passed to check_this() member function");

        break;

    }

    return false;

}

void

dummy::invariant1(void)

{

    CYG_INVARIANT_THIS(dummy, message);

    check_this_should_fail = true;

}

void

dummy::invariant2(void)

{

    CYG_INVARIANT_THISC(dummy);

    check_this_should_fail = true;

}

void

dummy::invariant3(dummy& obj)

{

    CYG_INVARIANT_CLASSO(dummy, obj, message);

    check_this_should_fail = true;

}

void

dummy::invariant4(dummy& obj)

{

    CYG_INVARIANT_CLASSOC(dummy, obj);

    check_this_should_fail = true;

}

void

dummy::invariant5(dummy* obj)

{

    CYG_INVARIANT_CLASS(dummy, obj, message);

    check_this_should_fail = true;

}

void

dummy::invariant6(dummy* obj)

{

    CYG_INVARIANT_CLASSC(dummy, obj);

    check_this_should_fail = true;

}

extern "C"

bool

failure_handler(const char* fn, const char* file, cyg_uint32 line, const char* msg)

{

    if (false == check_this_should_fail) {

        CYG_TEST_FAIL("assertion triggered when everything should be ok");

    }

    failed_assertions++;

    counter++;

    longjmp(setjmp_buffer, 1);

    return true;

}

int

main(int argc, char **argv)

{

    dummy object;

    cyg_assert_install_failure_handler(&failure_handler);

    setjmp(setjmp_buffer);

    for ( bool done = false; !done; counter++ ) {

        check_this_should_fail = false;

        switch(counter) {

        case 0:

            object.invariant1();

            CYG_TEST_FAIL("CYG_INVARIANT_THIS() test should not have returned");

            break;

        case 1:

            object.invariant2();

            CYG_TEST_FAIL("CYG_INVARIANT_THISC() test should not have returned");

            break;

        case 2:

            dummy::invariant3(object);

            CYG_TEST_FAIL("CYG_INVARIANT_CLASSO() test should not have returned");

            break;

        case 3:

            dummy::invariant4(object);

            CYG_TEST_FAIL("CYG_INVARIANT_CLASSOC() test should not have returned");

            break;

        case 4:

            dummy::invariant5(&object);

            CYG_TEST_FAIL("CYG_INVARIANT_CLASS() test should not have returned");

            break;

        case 5:

            dummy::invariant6(&object);

            CYG_TEST_FAIL("CYG_INVARIANT_CLASSC() test should not have returned");

            break;

        default:

            done = true;

            counter--;  // About to get incremented again...

            break;

        }

    }

    if (failed_assertions != 6) {

        CYG_TEST_FAIL("Broken test case, not all assertions have been tried");

    }

    if (failed_assertions == counter) {

        CYG_TEST_PASS("All assertions trigger successfully");

    } else {

        CYG_TEST_FAIL("Not all assertions trigger");

    }

    return 0;

}