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-rw-r--r--tests/envvar-check20
1 files changed, 20 insertions, 0 deletions
diff --git a/tests/envvar-check b/tests/envvar-check
index 8d1d3b903..357a6176a 100644
--- a/tests/envvar-check
+++ b/tests/envvar-check
@@ -1,4 +1,24 @@
# -*- sh -*-
+# Check environment variables for sane values while testing.
+
+# Copyright (C) 2000, 2001, 2003, 2004, 2006 Free Software Foundation,
+# Inc.
+
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+# 02110-1301, USA.
+
if (FOO=FOO; unset FOO) >/dev/null 2>&1; then
as_unset=unset
else