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[/] [openrisc/] [trunk/] [rtos/] [ecos-2.0/] [tools/] [src/] [infra/] [testsuite/] [cyginfra/] [tassert3.cxx] - Blame information for rev 196

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//==========================================================================
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//
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//      tassert3.cxx
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//
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//      Assertion test case                                                                
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//
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//==========================================================================
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//####COPYRIGHTBEGIN####
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//                                                                          
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// ----------------------------------------------------------------------------
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// Copyright (C) 1998, 1999, 2000 Red Hat, Inc.
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//
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// This file is part of the eCos host tools.
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//
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// This program is free software; you can redistribute it and/or modify it 
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// under the terms of the GNU General Public License as published by the Free 
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// Software Foundation; either version 2 of the License, or (at your option) 
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// any later version.
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// 
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// This program is distributed in the hope that it will be useful, but WITHOUT 
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// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 
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// FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for 
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// more details.
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// 
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// You should have received a copy of the GNU General Public License along with
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// this program; if not, write to the Free Software Foundation, Inc., 
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// 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
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//
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// ----------------------------------------------------------------------------
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//                                                                          
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//####COPYRIGHTEND####
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//==========================================================================
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//#####DESCRIPTIONBEGIN####                                             
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//
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// Author(s):           bartv
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// Contributors:        bartv
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// Date:                1998-12-21
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// Purpose:
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// Description:         Check the host extensions.
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//
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//####DESCRIPTIONEND####
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//==========================================================================
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// -------------------------------------------------------------------------
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// The host-side assertion support has three extensions to the generic
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// assertion support:
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//
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// 1) cyg_assert_install_failure_handler()
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//    Provide an alternative handler that gets invoked when an
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//    assertion fails.
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//
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// 2) cyg_assert_install_failure_callback()
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//    Provide an additional callback that should get invoked when an
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//    assertion triggers to provide additional information.
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//
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// 3) cyg_assert_failure_invoke_callbacks()
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//    Used by (1) to call the functions installed via (2).
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//
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// The tests make use of setjmp()/longjmp() buffer to avoid having to
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// do lots of output parsing in the DejaGnu driver.
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#define CYG_DECLARE_HOST_ASSERTION_SUPPORT
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#define CYGDBG_USE_ASSERTS
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#define CYGDBG_INFRA_DEBUG_PRECONDITIONS
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#define CYGDBG_INFRA_DEBUG_POSTCONDITIONS
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#define CYGDBG_INFRA_DEBUG_LOOP_INVARIANTS
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#define CYGDBG_INFRA_DEBUG_INVARIANTS
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#include <cyg/infra/testcase.h>
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#include <cyg/infra/cyg_ass.h>
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#include <cstdlib>
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#include <csetjmp>
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#include <cstring>
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// Forward declarations of some integers to allow the line number to be
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// checked.
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extern cyg_uint32 main_start, main_end;
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// This is used to "recover" from an assertion failure
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static jmp_buf setjmp_buffer;
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// A constant string useful for comparisons.
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static const char message[] = "fail";
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// Some state information to make sure that the world is in the expected
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// state
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bool expecting_failure1         = false;
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bool expecting_failure2         = false;
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bool expecting_failure3         = false;
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// -------------------------------------------------------------------------
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// The first assertion handler. This is used to check that the arguments
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// make sense.
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extern "C"
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bool
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failure_handler1(const char* fn, const char* file, cyg_uint32 line, const char* msg)
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{
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    if (!expecting_failure1) {
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        CYG_TEST_FAIL("assertion failure handler1 invoked unexpectedly");
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    }
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    expecting_failure1 = false;
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    // The function should be 0 or contain main
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    if (0 != fn) {
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        if (0 == strstr(fn, "main")) {
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            CYG_TEST_FAIL("invalid function name passed to assertion failure handler");
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        }
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    }
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    // The file name should always be valid and contain tassert3.cxx.
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    // It may contain path information as well.
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    if ( (0 == file) || (0 == strstr(file, "tassert3.cxx"))) {
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        CYG_TEST_FAIL("invalid file name passed to assertion failure handler");
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    }
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    // The line number can be validated against some globals.
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    if ((line <= main_start) || (line >= main_end)) {
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        CYG_TEST_FAIL("invalid line number passed to assertion failure handler");
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    }
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    // The message passed is known.
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    if (0 != strcmp(msg, message)) {
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        CYG_TEST_FAIL("invalid message passed to assertion failure handler");
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    }
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    CYG_TEST_PASS("application-specific assertion failure handler");
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    // Everything OK, back to main()
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    longjmp(setjmp_buffer, 1);
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    CYG_TEST_FAIL_FINISH("longjmp() is not functional");
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    return false;
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}
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130
// -------------------------------------------------------------------------
131
// A second assertion handler. This is used to make sure that assertion
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// failure handlers can be overwritten.
133
 
134
extern "C"
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bool
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failure_handler2(const char* fn, const char* file, cyg_uint32 line, const char* msg)
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{
138
    if (!expecting_failure2) {
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        CYG_TEST_FAIL("assertion failure handler2 invoked incorrectly");
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    }
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    expecting_failure2 = false;
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    CYG_TEST_PASS("assertion failure handlers can be replaced");
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    longjmp(setjmp_buffer, 1);
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    CYG_TEST_FAIL_FINISH("longjmp() is not functional");
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    return false;
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}
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// -------------------------------------------------------------------------
148
// The third assertion handler. This time a couple of output callbacks are
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// installed and the main failure handler has to invoke the output callbacks.
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// A number of statics are used to make sure everything works ok.
151
 
152
static const char callback1_title[] = "callback1_header";
153
static const char callback2_title[] = "callback2_header";
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static const char callback2_data[]  = "callback2 data\n";
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static bool seen_callback1_title    = false;
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static bool seen_callback2_title    = false;
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static bool callback1_done          = false;
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static bool callback2_done          = false;
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static int  number_of_headers       = 0;
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static bool callback1_invoked       = false;
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static bool callback2_invoked       = false;
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static int  number_of_lines_seen    = 0;
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const  int  callback2_lines         = 16;
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static int  callback2_lines_seen    = 0;
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static int  number_of_trailers      = 0;
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167
extern "C"
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void
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callback1(void (*outputfn)(const char*))
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{
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    if (callback1_invoked) {
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        CYG_TEST_FAIL("callback1 invoked multiple times");
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    }
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    callback1_invoked = true;
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176
    // This callback does nothing.
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}
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extern "C"
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void
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callback2(void (*outputfn)(const char*))
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{
183
    if (callback2_invoked) {
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        CYG_TEST_FAIL("callback2 invoked multiple times");
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    }
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    callback2_invoked = true;
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    for (int i = 0; i < callback2_lines; i++) {
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        (*outputfn)(callback2_data);
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    }
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}
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// handle_callback_header() should be invoked at least twice,
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// once with callback1_header and once with callback2_header
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extern "C"
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void
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handle_callback_header(const char* name)
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{
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    number_of_headers++;
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    if (0 == strcmp(name, callback1_title)) {
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        if (seen_callback1_title) {
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            CYG_TEST_FAIL("callback1 title seen multiple times");
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        } else {
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            seen_callback1_title = true;
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        }
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    }
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    if (0 == strcmp(name, callback2_title)) {
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        if (seen_callback2_title) {
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            CYG_TEST_FAIL("callback2 title seen multiple times");
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        } else {
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            seen_callback2_title = true;
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        }
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    }
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}
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// The body output function should be invoked zero times for
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// callback1 and a fixed number of times for callback2.
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extern "C"
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void
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handle_callback_body(const char* data)
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{
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    number_of_lines_seen++;
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    if (seen_callback1_title && !callback1_done) {
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        CYG_TEST_FAIL("callback1 should not perform any output");
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    }
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    if (seen_callback2_title && !callback2_done) {
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        callback2_lines_seen++;
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        if (0 != strcmp(data, callback2_data)) {
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            CYG_TEST_FAIL("callback2 has generated incorrect data");
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        }
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    }
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}
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// The trailer output function should be invoked at least twice, once
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// for each callback.
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extern "C"
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void
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handle_callback_trailer(void)
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{
240
    if (0 == number_of_headers) {
241
        CYG_TEST_FAIL("callback trailer seen before header");
242
    }
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    number_of_trailers++;
244
    if (seen_callback1_title && !callback1_done) {
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        callback1_done = true;
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    }
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    if (seen_callback2_title && !callback2_done) {
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        callback2_done = true;
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    }
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}
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// This is the failure handler. It causes the various callbacks to run, then
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// checks the resulting values of the statics.
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extern "C"
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bool
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failure_handler3(const char* fn, const char* file, cyg_uint32 line, const char* msg)
257
{
258
    if (!expecting_failure3) {
259
        CYG_TEST_FAIL("assertion failure handler3 invoked incorrectly");
260
    }
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    expecting_failure3 = false;
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263
    cyg_assert_failure_invoke_callbacks(
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        &handle_callback_header,
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        &handle_callback_body,
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        &handle_callback_trailer);
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268
    bool all_ok = true;
269
    if (!seen_callback1_title) {
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        CYG_TEST_FAIL("callback1's title not seen");
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        all_ok = false;
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    }
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    if (!seen_callback2_title) {
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        CYG_TEST_FAIL("callback2's title not seen");
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        all_ok = false;
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    }
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    if (number_of_headers != number_of_trailers) {
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        CYG_TEST_FAIL("headers and trailers do not match up");
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        all_ok = false;
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    }
281
    if (!callback1_done) {
282
        CYG_TEST_FAIL("callback1 did not finish");
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        all_ok = false;
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    }
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    if (!callback2_done) {
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        CYG_TEST_FAIL("callback2 did not finish");
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        all_ok = false;
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    }
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    if (number_of_lines_seen < callback2_lines) {
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        CYG_TEST_FAIL("total number of output lines is less than expected");
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        all_ok = false;
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    }
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    if (callback2_lines_seen != callback2_lines) {
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        CYG_TEST_FAIL("callback2 generated the wrong number of lines");
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        all_ok = false;
296
    }
297
 
298
    if (all_ok) {
299
        CYG_TEST_PASS("assertion callbacks");
300
    }
301
 
302
    longjmp(setjmp_buffer, 1);
303
    CYG_TEST_FAIL_FINISH("longjmp() is not functional");
304
    return false;
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}
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307
// ----------------------------------------------------------------------------
308
// main(). Perform the various assertion tests in order.
309
 
310
cyg_uint32 main_start = (cyg_uint32) __LINE__;
311
int
312
main(int argc, char** argv)
313
{
314
    expecting_failure1 = true;
315
    // First check, a very basic assertion invocation.
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    if (setjmp(setjmp_buffer) == 0) {
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        cyg_assert_install_failure_handler(&failure_handler1);
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        CYG_FAIL(message);
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        CYG_TEST_FAIL("assertion did not trigger");
320
    }
321
    expecting_failure1 = false;
322
    expecting_failure2 = true;
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324
    // Now try installing a different assertion handler.
325
    if (setjmp(setjmp_buffer) == 0) {
326
        cyg_assert_install_failure_handler(&failure_handler2);
327
        CYG_FAIL(message);
328
        CYG_TEST_FAIL("assertion did not trigger");
329
    }
330
    expecting_failure2 = false;
331
    expecting_failure3 = true;
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333
    if (setjmp(setjmp_buffer) == 0) {
334
        cyg_assert_install_failure_callback(callback1_title, &callback1);
335
        cyg_assert_install_failure_callback(callback2_title, &callback2);
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        cyg_assert_install_failure_handler(&failure_handler3);
337
        CYG_FAIL(message);
338
        CYG_TEST_FAIL("assertion did not trigger");
339
    }
340
    expecting_failure3 = false;
341
 
342
    return 0;
343
}
344
cyg_uint32 main_end = (cyg_uint32) __LINE__;
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