[src/trunk]: src/tests/bin/sh Tests for the shift builtin (from kre)

[christos <christos%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/ee83b554156e
branches:  trunk
changeset: 814136:ee83b554156e
user:      christos <christos%NetBSD.org@localhost>
date:      Tue Mar 08 14:26:26 2016 +0000

description:
Tests for the shift builtin (from kre)

diffstat:

 tests/bin/sh/t_shift.sh |  181 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 files changed, 181 insertions(+), 0 deletions(-)

diffs (185 lines):

diff -r e033c130f71f -r ee83b554156e tests/bin/sh/t_shift.sh
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/bin/sh/t_shift.sh   Tue Mar 08 14:26:26 2016 +0000
@@ -0,0 +1,181 @@
+# $NetBSD: t_shift.sh,v 1.1 2016/03/08 14:26:26 christos Exp $
+#
+# Copyright (c) 2016 The NetBSD Foundation, Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in the
+#    documentation and/or other materials provided with the distribution.
+#
+# THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+# ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+# TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+# PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
+# BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+#
+# the implementation of "sh" to test
+: ${TEST_SH:="/bin/sh"}
+
+atf_test_case basic_shift_test
+basic_shift_test_head() {
+       atf_set "descr" "Test correct operation of valid shifts"
+}
+basic_shift_test_body() {
+
+       for a in                        \
+         "one-arg::0:one-arg"          \
+         "one-arg:1:0:one-arg"         \
+         "one-arg:0:1 one-arg"         \
+         "a b c::2 b c:a"              \
+         "a b c:1:2 b c:a"             \
+         "a b c:2:1 c:a:b"             \
+         "a b c:3:0:a:b:c"             \
+         "a b c:0:3 a b c"             \
+         "a b c d e f g h i j k l m n o p:1:15 b c d e f g h i j k l m n o p"\
+         "a b c d e f g h i j k l m n o p:9:7 j k l m n o p:a:b:c:g:h:i"     \
+         "a b c d e f g h i j k l m n o p:13:3 n o p:a:b:c:d:k:l:m"          \
+         "a b c d e f g h i j k l m n o p:16:0:a:b:c:d:e:f:g:h:i:j:k:l:m:n:o:p"
+       do
+               oIFS="${IFS}"
+               IFS=:; set -- $a
+               IFS="${oIFS}"
+
+               init="$1"; n="$2"; res="$3"; shift 3
+
+               not=
+               for b
+               do
+                       not="${not} -o not-match:$b"
+               done
+
+               atf_check -s exit:0 -o "match:${res}" ${not} -e empty \
+                       ${TEST_SH} -c "set -- ${init}; shift $n;"' echo "$# $*"'
+       done
+
+       atf_check -s exit:0 -o match:complete -o not-match:ERR -e empty \
+               ${TEST_SH} -c \
+    'set -- a b c d e;while [ $# -gt 0 ];do shift||echo ERR;done;echo complete'
+}
+
+atf_test_case excessive_shift
+excessive_shift_head() {
+       atf_set "descr" "Test acceptable operation of shift too many"
+}
+# In:
+#
+#      http://pubs.opengroup.org/onlinepubs/9699919799
+#              /utilities/V3_chap02.html#tag_18_26_01
+#
+# (that URL should be one line, with the /util... immediately after ...9799)
+#
+# POSIX says of shift (in the "EXIT STATUS" paragraph):
+#
+#  If the n operand is invalid or is greater than "$#", this may be considered
+#  a syntax error and a non-interactive shell may exit; if the shell does not
+#  exit in this case, a non-zero exit status shall be returned.
+#  Otherwise, zero shall be returned.
+#
+# NetBSD's sh treats it as an error and exits (if non-interactive, as here),
+# other shells do not.
+#
+# Either behaviour is acceptable - so the test allows for both
+# (and checks that if the shell does not exit, "shift" returns status != 0)
+
+excessive_shift_body() {
+       for a in                                \
+               "one-arg:2"                     \
+               "one-arg:4"                     \
+               "one-arg:13"                    \
+               "one two:3"                     \
+               "one two:7"                     \
+               "one two three four five:6"     \
+               "I II III IV V VI VII VIII IX X XI XII XIII XIV XV:16"  \
+               "I II III IV V VI VII VIII IX X XI XII XIII XIV XV:17"  \
+               "I II III IV V VI VII VIII IX X XI XII XIII XIV XV:30"  \
+               "I II III IV V VI VII VIII IX X XI XII XIII XIV XV:9999"
+       do
+               oIFS="${IFS}"
+               IFS=:; set -- $a
+               IFS="${oIFS}"
+
+               atf_check -s not-exit:0 -o match:OK -o not-match:ERR \
+                       -e ignore ${TEST_SH} -c \
+                       "set -- $1 ;"'echo OK:$#-'"$2;shift $2 && echo ERR"
+       done
+}
+
+atf_test_case function_shift
+function_shift_head() {
+       atf_set "descr" "Test that shift in a function does not affect outside"
+}
+function_shift_body() {
+       # later...
+}
+
+atf_test_case non_numeric_shift
+non_numeric_shift_head() {
+       atf_set "descr" "Test that non-numeric args to shift are detected"
+}
+
+# from the DESCRIPTION section at the URL mentioned with the excessive_shift
+# test:
+#
+#      The value n shall be an unsigned decimal integer ...
+#
+# That is not hex (octal will be treated as if it were decimal, a leading 0
+# will simply be ignored - we test for this by giving an "octal" value that
+# would be OK if parsed as octal, but not if parsed (correctly) as decimal)
+#
+# Obviously total trash like roman numerals or alphabetic strings are out.
+#
+# Also no signed values (no + or -) and not a string that looks kind of like
+# a number,  but only if you're generous
+#
+# But as the EXIT STATUS section quoted above says, with an invalid 'n'
+# the shell has the option of exiting, or returning status != 0, so
+# again this test allows both.
+
+non_numeric_shift_body() {
+
+       # there are 9 args set, 010 is 8 if parsed octal, 10 decimal
+       for a in a I 0x12 010 5V -1 ' ' '' +1 ' 1'
+       do
+               atf_check -s not-exit:0 -o empty -e ignore ${TEST_SH} -c \
+                       "set -- a b c d e f g h i; shift '$a' && echo ERROR"
+       done
+}
+
+atf_test_case too_many_args
+too_many_args_head() {
+       # See PR bin/50896
+       atf_set "descr" "Test that sh detects invalid extraneous args to shift"
+}
+# This is a syntax error, a non-interactive shell (us) must exit $? != 0
+too_many_args_body() {
+       # This tests the bug in PR bin/50896 is fixed
+
+       for a in "1 1" "1 0" "1 2 3" "1 foo" "1 --" "-- 1"
+       do
+               atf_check -s not-exit:0 -o empty -e not-empty ${TEST_SH} -c \
+                       " set -- a b c d; shift ${a} ; echo FAILED "
+       done
+}
+
+atf_init_test_cases() {
+       atf_add_test_case basic_shift_test
+       atf_add_test_case excessive_shift
+       atf_add_test_case function_shift
+       atf_add_test_case non_numeric_shift
+       atf_add_test_case too_many_args
+}