#   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, see <http://www.gnu.org/licenses/>.
#

# posix-2.sh - Simple identification tests for POSIX.2 features
# commonly missing or incorrectly implemented.
# Time-stamp: <96/04/10 16:43:48 gildea>
# By Stephen Gildea <gildea@x.org> March 1995
#
# Copyright (c) 1995  Stephen Gildea
# Permission is hereby granted to deal in this Software without restriction.
# THIS SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND.
#
# MODIFIED BY chet@po.cwru.edu to make part of the bash test suite.
# last change: Wed Jun 19 12:24:24 EDT 1996
#
# some of the tests:
#
# shell functions (do we care?)
# var=${var:-val}
# unset
# set --
# IFS parsing
## not exiting with -e and failed "if", the way Ultrix does (Ultrix 4.2?)
# "$@" expands to zero arguments if passed zero arguments
# $SHELL -c 'echo $1' bad good
# test -x
# positional parameters greater than 9
# arithmetic expansion $(( ... ))
# getopts

# For some tests we must run a sub-shell; $TESTSHELL says what to use.
# If set, TESTSHELL must be an absolute pathname.
# For example, on HP-UX 9, /bin/posix/sh is the supposedly-compliant shell.
TESTSHELL=${THIS_SH:-$PWD/../bash}

# these tests create temp files with names $TMPDIR/conf*
: ${TMPDIR:=/tmp}

exitval=0
numtests=0

echo "Testing for POSIX.2 conformance"

newtest()
{
    numtests=$(($numtests + 1))
}

testfail()
{
    echo "$1 test failed"
    exitval=$(($exitval + 1))
}

newtest
empty=""
test "${empty:-ok}" = ok || testfail "empty var colon"
newtest
test "${empty-bad}" = "" || testfail "got \"${empty-bad}\": empty var nocolon"
newtest
test "${unsetvar-ok}" = ok || testfail "unset var"
newtest
unset empty
test "${empty-ok}" = ok || testfail "unset"

newtest
set -- -Z
test "x$1" = x-Z || testfail '\"set -- arg\"'
# this should empty the argument list
newtest
set --
test $# = 0 || testfail "still $# args: \"set --\""

# IFS parsing:
newtest
names=one/good/three
saved_ifs="$IFS"
IFS=/
set $names lose
test "$2" = good || testfail "got \"$2\": IFS parsing"
IFS="$saved_ifs"

# "$@" with 0 arguments should expand to 0 arguments
newtest
cat > $TMPDIR/conftest1 << EOF
$TMPDIR/conftest2 "\$@"
EOF
cat > $TMPDIR/conftest2 << "EOF"
#! /bin/sh
echo $#
EOF
chmod +x $TMPDIR/conftest1 $TMPDIR/conftest2
numargs=$($TESTSHELL $TMPDIR/conftest1)
if [ "$?" != 0 ]; then
    testfail 'running $@'
else
    test "$numargs" = 0 || testfail '"$@" got '"$numargs args: expansion w 0 args"
fi
rm -f $TMPDIR/conftest1 $TMPDIR/conftest2

newtest
val=$("$TESTSHELL" -c 'echo $1' csh good)
test "$val" = good || testfail "got \"$val\": sh -c"

newtest
# do these tests in a sub-shell because failure will exit
val=$("$TESTSHELL" -c 'echo ${10}' 0  1 2 3 4 5 6 7 8 9 ten 11 2> /dev/null)
test "$val" = ten || testfail "accessing more than 9 positional params"

a=abc_def_ghi
export a
newtest; val=`"$TESTSHELL" -c 'echo "${a%_*}"' 2> /dev/null`
test "$val" = abc_def || testfail "parameter % op"
newtest; val=`"$TESTSHELL" -c 'echo "${a%%_*}"' 2> /dev/null`
test "$val" = abc || testfail "parameter %% op"
newtest; val=`"$TESTSHELL" -c 'echo "${a#*_}"' 2> /dev/null`
test "$val" = def_ghi || testfail "parameter # op"
newtest; val=`"$TESTSHELL" -c 'echo "${a##*_}"' 2> /dev/null`
test "$val" = ghi || testfail "parameter ## op"

newtest
"$TESTSHELL" -c 'export a=value' 2> /dev/null || testfail "export with value"

newtest
a=5; test "$(( ($a+1)/2 ))" = 3 || testfail "arithmetic expansion"

# does "test" support the -x switch?
newtest
touch $TMPDIR/conftest
chmod -x $TMPDIR/conftest
test -x $TMPDIR/conftest && testfail "negative test -x"
chmod +x $TMPDIR/conftest
test -x $TMPDIR/conftest || testfail "positive test -x"
rm -f $TMPDIR/conftest

newtest
test "$OPTIND" = 1 || testfail "OPTIND initial value"

newtest
getopts a: store -a aoptval
if [ "$OPTIND" != 3 ] || [ "$store" != a ] || [ "$OPTARG" != aoptval ]; then
    testfail "getopts"
fi

# if I change the default quoting style for variable values, these
# next four must change

newtest
SQUOTE="'"
val1=$(set | sed -n 's:^SQUOTE=::p')
if [ "$val1" != "\'" ]; then
        testfail "variable quoting 1"
fi

newtest
VTILDE='~'
val1=$(set | sed -n 's:^VTILDE=::p')
if [ "$val1" != "'~'" ]; then
	testfail "variable quoting 2"
fi

newtest
VHASH=ab#cd
val1=$(set | sed -n 's:^VHASH=::p')
if [ "$val1" != "ab#cd" ]; then
	testfail "variable quoting 3"
fi

newtest
VHASH2=#abcd
val1=$(set | sed -n 's:^VHASH2=::p')
if [ "$val1" != "'#abcd'" ]; then
	testfail "variable quoting 4"
fi

# these are Posix.2 shell grammar rule 4, problems through bash-4.3
newtest
case esac in (foo|esac) ;; *) testfail "case esac test 1" ;; esac
newtest
case esac in foo|esac) ;; *) testfail "case esac test 2" ;; esac

# POSIX.2 grammar rule 4 problem through bash-5.1
newtest
eval 'case esac in (esac) ;; *) testfail "case esac test 3" ;; esac'

# these are supposed to be syntax errors
newtest
eval 'case esac in esac) ;; *) echo "case esac test 4";; esac' && testfail 'case esac test 4'

if [ $exitval = 0 ]; then
    echo "All tests passed"
else
    echo "$exitval of $numtests tests failed"
fi
exit $exitval