busybox/shell/ash_test/ash-arith/arith1.sub
Denis Vlasenko 1c660b4bd2 small ash testsuite, adapted from bash
(only a small part of it, actually)
2007-03-05 00:27:50 +00:00

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# test of redone post-increment and post-decrement code
( echo $(( 4-- )) )
( echo $(( 4++ )) )
( echo $(( 4 -- )) )
( echo $(( 4 ++ )) )
#ash# (( array[0]++ ))
#ash# echo ${array}
#ash# (( array[0] ++ ))
#ash# echo ${array}
#ash# (( a++ ))
#ash# echo $a
#ash# (( a ++ ))
#ash# echo $a
a=2
echo 6 $(( a ++ + 4 ))
echo 3 $a
echo 7 $(( a+++4 ))
echo 4 $a
echo 0 $(( a---4 ))
echo 3 $a
echo 7 $(( a -- + 4 ))
echo 2 $a
echo -2 $(( a -- - 4 ))
echo 1 $a
#ash# (( ++ + 7 ))
#ash# (( ++ ))
( echo $(( +++7 )) )
# bash 3.2 apparently thinks that ++ +7 is 7
#ash# echo $(( ++ + 7 ))
#ash# (( -- ))