#!/bin/sh

# Test 'cmp'.

# Copyright 2017 Free Software Foundation, Inc.

# 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/>.

. "${srcdir=.}/init.sh"; path_prepend_ ../src

fail=0

cat <<'EOF' > exp || fail=1

cmp a a

0

cmp a b

a b differ: char 1, line 1

1

cmp a c

cmp: EOF on c which is empty

1

cmp a d

cmp: d: No such file or directory

2

cmp b a

b a differ: char 1, line 1

1

cmp b b

0

cmp b c

cmp: EOF on c which is empty

1

cmp b d

cmp: d: No such file or directory

2

cmp c a

cmp: EOF on c which is empty

1

cmp c b

cmp: EOF on c which is empty

1

cmp c c

0

cmp c d

cmp: d: No such file or directory

2

cmp d a

cmp: d: No such file or directory

2

cmp d b

cmp: d: No such file or directory

2

cmp d c

cmp: d: No such file or directory

2

cmp d d

cmp: d: No such file or directory

2

cmp -l a a

0

cmp -l a b

1 141 142

1

cmp -l a c

cmp: EOF on c which is empty

1

cmp -l a d

cmp: d: No such file or directory

2

cmp -l b a

1 142 141

1

cmp -l b b

0

cmp -l b c

cmp: EOF on c which is empty

1

cmp -l b d

cmp: d: No such file or directory

2

cmp -l c a

cmp: EOF on c which is empty

1

cmp -l c b

cmp: EOF on c which is empty

1

cmp -l c c

0

cmp -l c d

cmp: d: No such file or directory

2

cmp -l d a

cmp: d: No such file or directory

2

cmp -l d b

cmp: d: No such file or directory

2

cmp -l d c

cmp: d: No such file or directory

2

cmp -l d d

cmp: d: No such file or directory

2

cmp -s a a

0

cmp -s a b

1

cmp -s a c

1

cmp -s a d

2

cmp -s b a

1

cmp -s b b

0

cmp -s b c

1

cmp -s b d

2

cmp -s c a

1

cmp -s c b

1

cmp -s c c

0

cmp -s c d

2

cmp -s d a

2

cmp -s d b

2

cmp -s d c

2

cmp -s d d

2

EOF

echo a >a

echo b >b

: >c

rm -f d

for option in '' -l -s; do

  for i in a b c d; do

    for j in a b c d; do

      echo cmp $option $i $j

      cmp $option $i $j >stdout 2>stderr

      status=$?

      cat stderr stdout

      echo $status

    done

  done

done >out

compare exp out || fail=1

cat <<'EOF' > exp1 || fail=1

cmp a0 a1

cmp: EOF on a0 which is empty

1

cmp a1 a2

cmp: EOF on a1 after byte 2, line 1

1

cmp a2 a3

cmp: EOF on a2 after byte 5, in line 2

1

cmp -l a0 a1

cmp: EOF on a0 which is empty

1

cmp -l a1 a2

cmp: EOF on a1 after byte 2

1

cmp -l a2 a3

cmp: EOF on a2 after byte 5

1

cmp -s a0 a1

1

cmp -s a1 a2

1

cmp -s a2 a3

1

EOF

printf '' >a0

printf '1\n' >a1

printf '1\nfoo' >a2

printf '1\nfoolery\n' >a3

for option in '' -l -s; do

  for files in 'a0 a1' 'a1 a2' 'a2 a3'; do

    echo cmp $option $files

    cmp $option $files >stdout 2>stderr

    status=$?

    cat stderr stdout

    echo $status

  done

done >out1

compare exp1 out1 || fail=1

printf 'bad\n' >bad

printf 'bug\n' >bug

echo LC_ALL=C cmp -b bad bug

LC_ALL=C cmp -b bad bug

test $? -eq 1 || fail=1

case `LC_ALL=C cmp -b bad bug` in

  'bad bug differ: byte 2, line 1 is '*' a '*' u') ;;

  *) echo 'expected cmp -b to report a and u'; fail=1;;

esac

Exit $fail