Sprite 1984 - 1993/Sprite 1984 - 1993.iso/src/cmds/bash-1.12/dist/test-suite/precedence

Text File | 1991-08-04 | 1.2 KB | 80 lines

# @(#)precedence_test 1.0 91/07/24 Maarten Litmaath
# test of relative precedences for `&&' and `||' operators

echo "\`Say' echos its argument. Its return value is of no interest."
case `echo -n` in
  '') function Say () { echo -n "$*" ; } ;;
   *) function Say () { echo "$*\c" ; } ;;
esac

echo "\`Truth' echos its argument and returns a TRUE result."
function Truth () {
  Say $1;
  return 0;
}

echo "\`False' echos its argument and returns a FALSE result."
function False () {
  Say $1;
  return 1;
}

echo ""

cmd1='$open $test1 && $test2 $close || $test3'
cmd2='$test1 || $open $test2 && $test3 $close'

grouping_sh=
grouping_C='( )'

test3='Say 3'

for i in 1 2
do
    eval proto=\$cmd$i

    for test1 in 'Truth 1' 'False 1'
    do
        for test2 in 'Truth 2' 'False 2'
        do
            for precedence in sh C
            do
                eval set x \$grouping_$precedence
                shift
                open=${1-' '}
                close=${2-' '}
                eval cmd=\""$proto"\"
                Say "$cmd   output="
                output=`eval "$cmd"`
                Say "$output"
                read correct || {
                    echo 'Input fubar.  Abort.' >&2
                    exit 1
                }
                test "X$output" = "X$correct" ||
                    echo "   correct=$correct"
                echo ''
            done

            echo ''
        done
    done
done << EOF
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EOF