[src/trunk]: src/tests/bin/sh Add a test case for PR bin/53201

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

details:   https://anonhg.NetBSD.org/src/rev/08da558fda42
branches:  trunk
changeset: 318410:08da558fda42
user:      kre <kre%NetBSD.org@localhost>
date:      Sat Apr 21 21:28:35 2018 +0000
description:
Add a test case for PR bin/53201

Currently this test case will fail, a fix is coming soon (not worth
marking this as an expected failure.)

This test case and the initial bug report comes from
Martijn Dekker's modernish (shell/test set).

diffstat:

 tests/bin/sh/t_expand.sh |  55 +++++++++++++++++++++++++++++++++++++++++++++++-
 1 files changed, 54 insertions(+), 1 deletions(-)

diffs (76 lines):

diff -r 2015e5676188 -r 08da558fda42 tests/bin/sh/t_expand.sh
--- a/tests/bin/sh/t_expand.sh  Sat Apr 21 18:34:08 2018 +0000
+++ b/tests/bin/sh/t_expand.sh  Sat Apr 21 21:28:35 2018 +0000
@@ -1,4 +1,4 @@
-# $NetBSD: t_expand.sh,v 1.18 2017/10/06 17:05:05 kre Exp $
+# $NetBSD: t_expand.sh,v 1.19 2018/04/21 21:28:35 kre Exp $
 #
 # Copyright (c) 2007, 2009 The NetBSD Foundation, Inc.
 # All rights reserved.
@@ -997,6 +997,58 @@
        results   # FIXED: 'PR bin/52090 - 2 of 26 subtests expected to fail'
 }
 
+atf_test_case embedded_nl
+embedded_nl_head() {
+       atf_set "descr" 'Test literal \n in xxx string in ${var-xxx}'
+}
+embedded_nl_body() {
+
+       atf_check -s exit:0 -o inline:'a\nb\n' -e empty ${TEST_SH} <<- 'EOF'
+               unset V
+               X="${V-a
+               b}"
+               printf '%s\n' "${X}"
+               EOF
+
+       atf_check -s exit:0 -o inline:'a\nb\n' -e empty ${TEST_SH} <<- 'EOF'
+               unset V
+               X=${V-"a
+               b"}
+               printf '%s\n' "${X}"
+               EOF
+
+       # This should not generate a syntax error, see PR bin/53201
+       atf_check -s exit:0 -o inline:'abc\n' -e empty ${TEST_SH} <<- 'EOF'
+               V=abc
+               X=${V-a
+               b}
+               printf '%s\n' "${X}"
+               EOF
+
+       # Nor should any of these...
+       atf_check -s exit:0 -o inline:'a\nb\n' -e empty ${TEST_SH} <<- 'EOF'
+               unset V
+               X=${V-a
+               b}
+               printf '%s\n' "${X}"
+               EOF
+
+       atf_check -s exit:0 -o inline:'a\nb\n' -e empty ${TEST_SH} <<- 'EOF'
+               unset V
+               X=${V:=a
+               b}
+               printf '%s\n' "${X}"
+               EOF
+
+       atf_check -s exit:0 -o inline:'xa\nby\na\nb\n' -e empty \
+           ${TEST_SH} <<- 'EOF'
+               unset V
+               X=x${V:=a
+               b}y
+               printf '%s\n' "${X}" "${V}"
+               EOF
+}
+
 atf_init_test_cases() {
        # Listed here in the order ATF runs them, not the order from above
 
@@ -1009,6 +1061,7 @@
        atf_add_test_case dollar_star_in_word
        atf_add_test_case dollar_star_in_word_empty_ifs
        atf_add_test_case dollar_star_with_empty_ifs
+       atf_add_test_case embedded_nl
        atf_add_test_case iteration_on_null_parameter
        atf_add_test_case iteration_on_quoted_null_parameter
        atf_add_test_case iteration_on_null_or_null_parameter