[src/trunk]: src/tests/bin/sh Guard against EVN being set, and possibly refer...

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

details:   https://anonhg.NetBSD.org/src/rev/f59713b0e10b
branches:  trunk
changeset: 824336:f59713b0e10b
user:      kre <kre%NetBSD.org@localhost>
date:      Fri Jun 02 01:38:44 2017 +0000

description:
Guard against EVN being set, and possibly referencing an unset
variable, when we are running tests with sh -u

diffstat:

 tests/bin/sh/t_option.sh |  4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)

diffs (18 lines):

diff -r 848c79ee74b5 -r f59713b0e10b tests/bin/sh/t_option.sh
--- a/tests/bin/sh/t_option.sh  Fri Jun 02 01:22:50 2017 +0000
+++ b/tests/bin/sh/t_option.sh  Fri Jun 02 01:38:44 2017 +0000
@@ -1,4 +1,4 @@
-# $NetBSD: t_option.sh,v 1.3 2016/03/08 14:19:28 christos Exp $
+# $NetBSD: t_option.sh,v 1.4 2017/06/02 01:38:44 kre Exp $
 #
 # Copyright (c) 2016 The NetBSD Foundation, Inc.
 # All rights reserved.
@@ -356,6 +356,8 @@
 set_u_body() {
        test_option_on_off u
 
+       unset ENV       # make sure there is nothing there to cause problems
+
        # first make sure it is OK to unset an unset variable
        atf_check -s exit:0 -o match:OK -e empty ${TEST_SH} -ce \
                'unset _UNSET_VARIABLE_; echo OK'