1#!/bin/ksh 2# $OpenBSD: expr.sh,v 1.2 2018/03/31 15:52:31 schwarze Exp $ 3 4: ${EXPR=expr} 5 6function test_expr { 7 #echo "Testing: `eval echo $1`" 8 res=`eval $EXPR $1 2>&1` 9 if [ "$res" != "$2" ]; then 10 echo "Expected $2, got $res from expression: `eval echo $1`" 11 exit 1 12 fi 13} 14 15# The first arg will get eval'd so escape any meta characters 16# The 2nd arg is an expected string/response from expr for that op. 17 18# Test overflow cases 19test_expr '4611686018427387904 + 4611686018427387903' '9223372036854775807' 20test_expr '4611686018427387904 + 4611686018427387904' "expr: overflow" 21test_expr '-4611686018427387904 + -4611686018427387904' '-9223372036854775808' 22test_expr '-4611686018427387904 + -4611686018427387905' 'expr: overflow' 23test_expr '4611686018427387904 - -4611686018427387903' '9223372036854775807' 24test_expr '4611686018427387904 - -4611686018427387904' "expr: overflow" 25test_expr '-4611686018427387904 - 4611686018427387903' '-9223372036854775807' 26test_expr '-4611686018427387904 - 4611686018427387904' '-9223372036854775808' 27test_expr '-4611686018427387904 - 4611686018427387905' "expr: overflow" 28test_expr '-4611686018427387904 \* 1' '-4611686018427387904' 29test_expr '-4611686018427387904 \* -1' '4611686018427387904' 30test_expr '-4611686018427387904 \* 2' '-9223372036854775808' 31test_expr '-4611686018427387904 \* 3' "expr: overflow" 32test_expr '-4611686018427387904 \* -2' "expr: overflow" 33test_expr '4611686018427387904 \* 1' '4611686018427387904' 34test_expr '4611686018427387904 \* 2' "expr: overflow" 35test_expr '4611686018427387904 \* 3' "expr: overflow" 36test_expr '4611686018427387903 \* 2' '9223372036854775806' 37test_expr '-4611686018427387905 \* 2' 'expr: overflow' 38test_expr '4611686018427387904 / 0' 'expr: division by zero' 39test_expr '-9223372036854775808 / -1' 'expr: overflow' 40test_expr '-9223372036854775808 % -1' '0' 41 42# Test from gtk-- configure that cause problems on old expr 43test_expr '3 \> 3 \| 3 = 3 \& 4 \> 4 \| 3 = 3 \& 4 = 4 \& 5 \>= 5' '1' 44test_expr '3 \> 3 \| 3 = 3 \& 4 \> 4 \| 3 = 3 \& 4 = 4 \& 5 \>= 6' '0' 45test_expr '3 \> 3 \| 3 = 3 \& 4 \> 4 \| 3 = 3 \& 4 = 3 \& 5 \>= 5' '0' 46test_expr '3 \> 3 \| 3 = 3 \& 4 \> 4 \| 3 = 2 \& 4 = 4 \& 5 \>= 5' '0' 47test_expr '3 \> 2 \| 3 = 3 \& 4 \> 4 \| 3 = 3 \& 4 = 4 \& 5 \>= 6' '1' 48test_expr '3 \> 3 \| 3 = 3 \& 4 \> 3 \| 3 = 3 \& 4 = 4 \& 5 \>= 5' '1' 49 50# Basic precendence test with the : operator vs. math 51test_expr '2 : 4 / 2' '0' 52test_expr '4 : 4 % 3' '1' 53 54# Dangling arithemtic operator 55test_expr '.java_wrapper : /' '0' 56test_expr '4 : \*' '0' 57test_expr '4 : +' '0' 58test_expr '4 : -' '0' 59test_expr '4 : /' '0' 60test_expr '4 : %' '0' 61 62# Basic math test 63test_expr '2 + 4 \* 5' '22' 64 65# Basic functional tests 66test_expr '2' '2' 67test_expr '-4' '-4' 68test_expr 'hello' 'hello' 69 70# Compare operator precendence test 71test_expr '2 \> 1 \* 17' '0' 72 73# Compare operator tests 74test_expr '2 \!= 5' '1' 75test_expr '2 \!= 2' '0' 76test_expr '2 \<= 3' '1' 77test_expr '2 \<= 2' '1' 78test_expr '2 \<= 1' '0' 79test_expr '2 \< 3' '1' 80test_expr '2 \< 2' '0' 81test_expr '2 = 2' '1' 82test_expr '2 = 4' '0' 83test_expr '2 \>= 1' '1' 84test_expr '2 \>= 2' '1' 85test_expr '2 \>= 3' '0' 86test_expr '2 \> 1' '1' 87test_expr '2 \> 2' '0' 88 89# Known failure once 90test_expr '1 \* -1' '-1' 91 92# Test a known case that should fail 93test_expr '- 1 + 5' 'expr: syntax error' 94 95# Double check negative numbers 96test_expr '1 - -5' '6' 97 98# More complex math test for precedence 99test_expr '-3 + -1 \* 4 + 3 / -6' '-7' 100 101# The next two are messy but the shell escapes cause that. 102# Test precendence 103test_expr 'X1/2/3 : X\\\(.\*[^/]\\\)//\*[^/][^/]\*/\*$ \| . : \\\(.\\\)' '1/2' 104 105# Test proper () returning \1 from a regex 106test_expr '1/2 : .\*/\\\(.\*\\\)' '2' 107 108# Test integer edge cases 109test_expr '9223372036854775806 + 0' '9223372036854775806' 110test_expr '9223372036854775806 + 1' '9223372036854775807' 111test_expr '9223372036854775807 + 0' '9223372036854775807' 112test_expr '9223372036854775806 + 2' 'expr: overflow' 113test_expr '9223372036854775807 + 1' 'expr: overflow' 114test_expr '9223372036854775808 + 0' \ 115 'expr: number "9223372036854775808" is too large' 116test_expr '-9223372036854775807 + 0' '-9223372036854775807' 117test_expr '-9223372036854775807 - 1' '-9223372036854775808' 118test_expr '-9223372036854775808 + 0' '-9223372036854775808' 119test_expr '-9223372036854775807 - 2' 'expr: overflow' 120test_expr '-9223372036854775808 - 1' 'expr: overflow' 121test_expr '-9223372036854775809 + 0' \ 122 'expr: number "-9223372036854775809" is too small' 123test_expr '0 - -9223372036854775807' '9223372036854775807' 124test_expr '1 - -9223372036854775806' '9223372036854775807' 125test_expr '0 - -9223372036854775808' 'expr: overflow' 126test_expr '1 - -9223372036854775807' 'expr: overflow' 127test_expr '-36854775808 - \( -9223372036854775807 - 1 \)' '9223372000000000000' 128 129exit 0 130