# $NetBSD: t_gcov.sh,v 1.1 2025/01/18 22:31:22 rillig Exp $
#
# Copyright (c) 2025 The NetBSD Foundation, Inc.
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer in the
#    documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
# ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
# TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
# PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
#

after_exec_head()
{
}
after_exec_body()
{
       atf_require_prog cat
       atf_require_prog gcc
       atf_require_prog gcov
       atf_require_prog grep

       cat <<EOF >prog.c
#include <unistd.h>

int
main(void)
{
       pid_t pid = vfork();
       switch (pid) {
       case 0:
               execl("/bin/sh", "sh", "-c", ":", (const char *)0);
               /* FALLTHROUGH */
       case -1:
               write(2, "error\n", 6);
               _exit(1);
       }

       write(1, "reached\n", 8);
       return 0;
}
EOF

       cat <<EOF >prog.c.gcov.expected
       -:    0:Source:prog.c
       -:    0:Graph:prog.gcno
       -:    0:Data:prog.gcda
       -:    0:Runs:1
       -:    1:#include <unistd.h>
       -:    2:
       -:    3:int
       1:    4:main(void)
       -:    5:{
       1:    6:        pid_t pid = vfork();
       1:    7:        switch (pid) {
       1:    8:        case 0:
       1:    9:                execl("/bin/sh", "sh", "-c", ":", (const char *)0);
       -:   10:                /* FALLTHROUGH */
   #####:   11:        case -1:
   #####:   12:                write(2, "error\n", 6);
   #####:   13:                _exit(1);
       -:   14:        }
       -:   15:
   #####:   16:        write(1, "reached\n", 8);
   #####:   17:        return 0;
       -:   18:}
EOF

       atf_check \
           gcc --coverage -c prog.c
       atf_check \
           gcc --coverage -o prog prog.o
       atf_check -o inline:'reached\n' \
           ./prog
       atf_check -o ignore \
           gcov prog.c

       atf_check -o file:prog.c.gcov.expected \
           cat prog.c.gcov

       # FIXME: The code was reached once but is reported as unreached.
       atf_check -o ignore \
           grep "#####.*reached" prog.c.gcov
}

atf_init_test_cases()
{
       atf_add_test_case after_exec
}