Improve checks for incompatible options.

[chaz/tar] / tests / opcomp04.at

diff --git a/tests/opcomp04.at b/tests/opcomp04.at
new file mode 100644 (file)
index 0000000..67f94b5
--- /dev/null
+++ b/tests/opcomp04.at
@@ -0,0 +1,38 @@
+# Process this file with autom4te to create testsuite. -*- Autotest -*-
+
+# Test suite for GNU tar.
+# Copyright 2013 Free Software Foundation, Inc.
+
+# This file is part of GNU tar.
+
+# GNU tar 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 3 of the License, or
+# (at your option) any later version.
+
+# GNU tar 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, see <http://www.gnu.org/licenses/>.
+
+AT_SETUP([compress option compatibility])
+AT_KEYWORDS([opcomp opcomp04])
+
+AT_CHECK([
+AT_GZIP_PREREQ
+genfile --file file
+tar czf test.tar file
+genfile --file newfile
+tar rzf test.tar newfile
+],
+[2],
+[],
+[tar: Cannot update compressed archives
+Try 'tar --help' or 'tar --usage' for more information.
+])
+
+AT_CLEANUP
+