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      1 # $NetBSD: t_varquote.sh,v 1.6 2024/04/28 07:27:40 rillig Exp $
      2 #
      3 # Copyright (c) 2007 The NetBSD Foundation, Inc.
      4 # All rights reserved.
      5 #
      6 # Redistribution and use in source and binary forms, with or without
      7 # modification, are permitted provided that the following conditions
      8 # are met:
      9 # 1. Redistributions of source code must retain the above copyright
     10 #    notice, this list of conditions and the following disclaimer.
     11 # 2. Redistributions in binary form must reproduce the above copyright
     12 #    notice, this list of conditions and the following disclaimer in the
     13 #    documentation and/or other materials provided with the distribution.
     14 #
     15 # THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     16 # ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     17 # TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     18 # PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     19 # BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     20 # CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     21 # SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     22 # INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     23 # CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     24 # ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     25 # POSSIBILITY OF SUCH DAMAGE.
     26 #
     27 # the implementation of "sh" to test
     28 : ${TEST_SH:="/bin/sh"}
     29 
     30 # Variable quoting test.
     31 
     32 check() {
     33 	if [ "$1" != "$2" ]
     34 	then
     35 		atf_fail "expected [$2], found [$1]" 1>&2
     36 	fi
     37 }
     38 
     39 atf_test_case all
     40 all_head() {
     41 	atf_set "descr" "Basic checks for variable quoting"
     42 }
     43 all_body() {
     44 
     45 	cat <<-'EOF' > script.sh
     46 		T=0
     47 		check() {
     48 			T=$((${T} + 1))
     49 
     50 			if [ "$1" != "$2" ]
     51 			then
     52 				printf '%s\n' "T${T}: expected [$2], found [$1]"
     53 				exit 1
     54 			fi
     55 		}
     56 
     57 								#1
     58 		foo='${a:-foo}'
     59 		check "$foo" '${a:-foo}'
     60 								#2
     61 		foo="${a:-foo}"
     62 		check "$foo" "foo"
     63 								#3
     64 		foo=${a:-"'{}'"}	
     65 		check "$foo" "'{}'"
     66 								#4
     67 		foo=${a:-${b:-"'{}'"}}
     68 		check "$foo" "'{}'"
     69 								#5
     70 		#    ${   }   The ' are inside ".." so are literal (not quotes).
     71 		foo="${a-'}'}"
     72 		check "$foo" "''}"
     73 								#6
     74 		# The rules for quoting in ${var-word} expressions are somewhat
     75 		# weird, in the following there is not one quoted string being
     76 		# assigned to foo (with internally quoted sub-strings), rather
     77 		# it is a mixed quoted/unquoted string, with parts that are
     78 		# quoted, separated by 2 unquoted sections...
     79 		#    qqqqqqqqqq uuuuuuuuuu qq uuuu qqqq
     80 		foo="${a:-${b:-"${c:-${d:-"x}"}}y}"}}z}"
     81 		#   "                                z*"
     82 		#    ${a:-                          }
     83 		#         ${b:-                    }
     84 		#              "                y*"
     85 		#               ${c:-          }
     86 		#                    ${d:-    }
     87 		#                         "x*"
     88 		check "$foo" "x}y}z}"
     89 								#7
     90 		# And believe it or not, this is the one that gives
     91 		# most problems, with 3 different observed outputs...
     92 		#    qqqqq  qq  q		is one interpretation
     93 		#    qqqqq QQQQ q		is another (most common)
     94 		#			(the third is syntax error...)
     95 		foo="${a:-"'{}'"}"
     96 		check "$foo" "'{}'"
     97 
     98 	EOF
     99 
    100 	OUT=$( ${TEST_SH} script.sh 2>&1 )
    101 	if  [ $? -ne 0 ]
    102 	then
    103 		atf_fail "${OUT}"
    104 	elif [ -n "${OUT}" ]
    105 	then
    106 		atf_fail "script.sh unexpectedly said: ${OUT}"
    107 	fi
    108 }
    109 
    110 atf_test_case nested_quotes_multiword
    111 nested_quotes_multiword_head() {
    112 	atf_set "descr" "Tests that having nested quoting in a multi-word" \
    113 	    "string works (PR bin/43597)"
    114 }
    115 nested_quotes_multiword_body() {
    116 	atf_check -s exit:0 -o match:"first-word second-word" -e empty \
    117 	    ${TEST_SH} -c 'echo "${foo:="first-word"} second-word"'
    118 }
    119 
    120 atf_test_case default_assignment_with_arith
    121 default_assignment_with_arith_head() {
    122 	atf_set "descr" "Tests default variable assignment with arithmetic" \
    123 	    "string works (PR bin/50827)"
    124 }
    125 default_assignment_with_arith_body() {
    126 	atf_check -s exit:0 -o empty -e empty ${TEST_SH} -c ': "${x=$((1))}"'
    127 	atf_check -s exit:0 -o match:1 -e empty ${TEST_SH} -c 'echo "${x=$((1))}"'
    128 }
    129 
    130 atf_init_test_cases() {
    131 	atf_add_test_case all
    132 	atf_add_test_case nested_quotes_multiword
    133 	atf_add_test_case default_assignment_with_arith
    134 }
    135