xref: /src/tests/bin/expr/t_expr.sh

# $NetBSD: t_expr.sh,v 1.8 2025/03/14 22:12:00 rillig Exp $
#
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# The first arg will get eval'd so escape any meta characters
# The 2nd arg is an expected string/response from expr for that op.
test_expr() {
	echo "Expression '${1}', expecting '${2}'"
	res=`eval expr $1 2>&1`
	if [ "$res" != "$2" ]; then
		atf_fail "Expected $2, got $res from expression: " \
		         "`eval echo $1`"
	fi
}

atf_test_case lang
lang_head() {
	atf_set "descr" "Test that expr(1) works with non-C LANG (PR bin/2486)"
}
lang_body() {

	export LANG=nonexistent
	atf_check -s exit:0 -o inline:"21\n" -e empty -x "expr 10 + 11"

	export LANG=ru_RU.KOI8-R
	atf_check -s exit:0 -o inline:"21\n" -e empty -x "expr 10 + 11"
}

atf_test_case overflow
overflow_head() {
	atf_set "descr" "Test overflow cases"
}
overflow_body() {
	test_expr '4611686018427387904 + 4611686018427387903' \
	          '9223372036854775807'
	test_expr '4611686018427387904 + 4611686018427387904' \
	          "expr: integer overflow or underflow occurred for operation '4611686018427387904 + 4611686018427387904'"
	test_expr '4611686018427387904 - -4611686018427387904' \
	          "expr: integer overflow or underflow occurred for operation '4611686018427387904 - -4611686018427387904'"
	test_expr '-4611686018427387904 - 4611686018427387903' \
	          '-9223372036854775807'
	test_expr '-4611686018427387904 - 4611686018427387905' \
	          "expr: integer overflow or underflow occurred for operation '-4611686018427387904 - 4611686018427387905'"
	test_expr '-4611686018427387904 \* 1' '-4611686018427387904'
	test_expr '-4611686018427387904 \* -1' '4611686018427387904'
	test_expr '-4611686018427387904 \* 2' '-9223372036854775808'
	test_expr '-4611686018427387904 \* 3' \
	          "expr: integer overflow or underflow occurred for operation '-4611686018427387904 * 3'"
	test_expr '-4611686018427387904 \* -2' \
	          "expr: integer overflow or underflow occurred for operation '-4611686018427387904 * -2'"
	test_expr '4611686018427387904 \* 1' '4611686018427387904'
	test_expr '4611686018427387904 \* 2' \
	          "expr: integer overflow or underflow occurred for operation '4611686018427387904 * 2'"
	test_expr '4611686018427387904 \* 3' \
	          "expr: integer overflow or underflow occurred for operation '4611686018427387904 * 3'"
	test_expr '-9223372036854775808 % -1' \
	          "expr: integer overflow or underflow occurred for operation '-9223372036854775808 % -1'"
	test_expr '-9223372036854775808 / -1' \
	          "expr: integer overflow or underflow occurred for operation '-9223372036854775808 / -1'"
	test_expr '0 + -9223372036854775808' '-9223372036854775808'
	test_expr '0 + -1' '-1'
	test_expr '0 + 0' '0'
	test_expr '0 + 1' '1'
	test_expr '0 + 9223372036854775807' '9223372036854775807'
	test_expr '-9223372036854775808 + 0' '-9223372036854775808'
	test_expr '9223372036854775807 + 0' '9223372036854775807'
	test_expr '4611686018427387904 \* -1' '-4611686018427387904'
	test_expr '4611686018427387904 \* -2' '-9223372036854775808'
	test_expr '4611686018427387904 \* -3' \
	          "expr: integer overflow or underflow occurred for operation '4611686018427387904 * -3'"
	test_expr '-4611686018427387904 \* -1' '4611686018427387904'
	test_expr '-4611686018427387904 \* -2' \
	          "expr: integer overflow or underflow occurred for operation '-4611686018427387904 * -2'"
	test_expr '-4611686018427387904 \* -3' \
	          "expr: integer overflow or underflow occurred for operation '-4611686018427387904 * -3'"
	test_expr '0 \* -1' '0'
	test_expr '0 \* 0' '0'
	test_expr '0 \* 1' '0'
}

atf_test_case gtkmm
gtkmm_head() {
	atf_set "descr" "Tests from gtk-- configure that cause problems on old expr"
}
gtkmm_body() {
	test_expr '3 \> 3 \| 3 = 3 \& 4 \> 4 \| 3 = 3 \& 4 = 4 \& 5 \>= 5' '1'
	test_expr '3 \> 3 \| 3 = 3 \& 4 \> 4 \| 3 = 3 \& 4 = 4 \& 5 \>= 6' '0'
	test_expr '3 \> 3 \| 3 = 3 \& 4 \> 4 \| 3 = 3 \& 4 = 3 \& 5 \>= 5' '0'
	test_expr '3 \> 3 \| 3 = 3 \& 4 \> 4 \| 3 = 2 \& 4 = 4 \& 5 \>= 5' '0'
	test_expr '3 \> 2 \| 3 = 3 \& 4 \> 4 \| 3 = 3 \& 4 = 4 \& 5 \>= 6' '1'
	test_expr '3 \> 3 \| 3 = 3 \& 4 \> 3 \| 3 = 3 \& 4 = 4 \& 5 \>= 5' '1'
}

atf_test_case colon_vs_math
colon_vs_math_head() {
	atf_set "descr" "Basic precendence test with the : operator vs. math"
}
colon_vs_math_body() {
	test_expr '2 : 4 / 2' '0'
	test_expr '4 : 4 % 3' '1'
}

atf_test_case arithmetic_ops
arithmetic_ops_head() {
	atf_set "descr" "Dangling arithmetic operator"
}
arithmetic_ops_body() {
	test_expr '.java_wrapper : /' '0'
	test_expr '4 : \*' '0'
	test_expr '4 : +' '0'
	test_expr '4 : -' '0'
	test_expr '4 : /' '0'
	test_expr '4 : %' '0'
}

atf_test_case basic_math
basic_math_head() {
	atf_set "descr" "Basic math test"
}
basic_math_body() {
	test_expr '2 + 4 \* 5' '22'
}

atf_test_case basic_functional
basic_functional_head() {
	atf_set "descr" "Basic functional tests"
}
basic_functional_body() {
	test_expr '2' '2'
	test_expr '-4' '-4'
	test_expr 'hello' 'hello'
}

atf_test_case compare_ops_precedence
compare_ops_precedence_head() {
	atf_set "descr" "Compare operator precendence test"
}
compare_ops_precedence_body() {
	test_expr '2 \> 1 \* 17' '0'
}

atf_test_case compare_ops
compare_ops_head() {
	atf_set "descr" "Compare operator tests"
}
compare_ops_body() {
	test_expr '2 \!= 5' '1'
	test_expr '2 \!= 2' '0'
	test_expr '2 \<= 3' '1'
	test_expr '2 \<= 2' '1'
	test_expr '2 \<= 1' '0'
	test_expr '2 \< 3' '1'
	test_expr '2 \< 2' '0'
	test_expr '2 = 2' '1'
	test_expr '2 = 4' '0'
	test_expr '2 \>= 1' '1'
	test_expr '2 \>= 2' '1'
	test_expr '2 \>= 3' '0'
	test_expr '2 \> 1' '1'
	test_expr '2 \> 2' '0'
}

atf_test_case multiply
multiply_head() {
	atf_set "descr" "Test the multiply operator (PR bin/12838)"
}
multiply_body() {
	test_expr '1 \* -1' '-1'
	test_expr '2 \> 1 \* 17' '0'
}

atf_test_case negative
negative_head() {
	atf_set "descr" "Test the additive inverse"
}
negative_body() {
	test_expr '-1 + 5' '4'
	test_expr '- 1 + 5' 'expr: syntax error'

	test_expr '5 + -1' '4'
	test_expr '5 + - 1' 'expr: syntax error'

	test_expr '1 - -5' '6'
}

atf_test_case math_precedence
math_precedence_head() {
	atf_set "descr" "More complex math test for precedence"
}
math_precedence_body() {
	test_expr '-3 + -1 \* 4 + 3 / -6' '-7'
}

atf_test_case precedence
precedence_head() {
	atf_set "descr" "Test precedence"
}
precedence_body() {
	# This is messy but the shell escapes cause that
	test_expr 'X1/2/3 : X\\\(.\*[^/]\\\)//\*[^/][^/]\*/\*$ \| . : \\\(.\\\)' '1/2'
}

atf_test_case regex
regex_head() {
	atf_set "descr" "Test proper () returning \1 from a regex"
}
regex_body() {
	# This is messy but the shell escapes cause that
	test_expr '1/2 : .\*/\\\(.\*\\\)' '2'
}

atf_test_case string_length
string_length_head() {
	atf_set "descr" "Test the string length operator"
}
string_length_body() {
	test_expr 'length ""' '0'
	test_expr 'length +' 'expr: syntax error'
	test_expr 'length \!' '1'
	test_expr 'length ++' '2'

	# POSIX says "unspecified results"
	test_expr 'length length' '6'
}

atf_init_test_cases()
{
	atf_add_test_case lang
	atf_add_test_case overflow
	atf_add_test_case gtkmm
	atf_add_test_case colon_vs_math
	atf_add_test_case arithmetic_ops
	atf_add_test_case basic_math
	atf_add_test_case basic_functional
	atf_add_test_case compare_ops_precedence
	atf_add_test_case compare_ops
	atf_add_test_case multiply
	atf_add_test_case negative
	atf_add_test_case math_precedence
	atf_add_test_case precedence
	atf_add_test_case regex
	atf_add_test_case string_length
}