bin/cash/tests/expansion/cmdsubst6.0


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# $FreeBSD: releng/12.0/bin/sh/tests/expansion/cmdsubst6.0 216763 2010-12-28 14:58:08Z jilles $
# This tests if the cmdsubst optimization is still used if possible.

failures=''
ok=''

testcase() {
	code="$1"

	unset v
	eval "pid=\$(dummy=$code echo \$(\$SH -c echo\ \\\$PPID))"

	if [ "$pid" = "$$" ]; then
		ok=x$ok
	else
		failures=x$failures
		echo "Failure for $code"
	fi
}

unset v
w=1
testcase '$w'
testcase '1${w+1}'
testcase '1${w-1}'
testcase '1${v+1}'
testcase '1${v-1}'
testcase '1${w:+1}'
testcase '1${w:-1}'
testcase '1${v:+1}'
testcase '1${v:-1}'
testcase '${w?}'
testcase '${w:?}'
testcase '${w#x}'
testcase '${w##x}'
testcase '${w%x}'
testcase '${w%%x}'

testcase '$((w))'
testcase '$(((w+4)*2/3))'
testcase '$((w==1))'
testcase '$((w>=0 && w<=5 && w!=2))'
testcase '$((${#w}))'
testcase '$((${#IFS}))'
testcase '$((${#w}>=1))'
testcase '$(($$))'
testcase '$(($#))'
testcase '$(($?))'

testcase '$(: $((w=4)))'
testcase '$(: ${v=2})'

test "x$failures" = x