source: vendor/bash/3.1/tests/dstack.tests

export LC_ALL=C
export LANG=C

dirs -c
# error -- nonexistant directory
pushd /tmp/xxx-notthere

# errors -- empty stack
pushd
popd

# errors -- bad numeric arguments -- should not cause the script to exit
pushd -m
popd -m
dirs -m
dirs 7

MYDIR=$PWD
unalias cd 2>/dev/null

unalias -a

command cd -P /
command pwd -P  # better be `/'

case "$OLDPWD" in
$MYDIR) echo ok ;;
*)      echo oops -- bad \$OLDPWD ;;
esac

pushd /usr
echo $PWD $OLDPWD
dirs
echo ${DIRSTACK[@]}

# this should not change the directory stack at all
pushd -n +0
dirs

popd
pushd /usr

pushd /etc
dirs
dirs -l
dirs -v

# two consecutive `pushd's should swap the top two stack elements, then
# swap them back, leaving the stack intact
pushd
pushd

pushd /tmp
echo ${DIRSTACK[0]} ; dirs +0
echo ${DIRSTACK[2]} ; dirs +2

# these should be errors, but not affect the directory stack
dirs +9; dirs -9
pushd +9 ; pushd -9
popd +9 ; popd -9

popd -n +2
dirs
echo ${DIRSTACK[@]}

pushd -n /usr
echo $PWD
dirs
echo ${DIRSTACK[@]}

builtin pwd

DIRSTACK[1]=/bin
dirs

builtin pwd
popd +2
builtin pwd -L
pushd -1
dirs
echo ${DIRSTACK[0]}

dirs -c
dirs

# this is for the benefit of pure coverage
cd $MYDIR