New test case

tests/append02.at

@@ -0,0 +1,72 @@
+# Process this file with autom4te to create testsuite. -*- Autotest -*-
+
+# Test suite for GNU tar.
+# Copyright (C) 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, 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.
+
+# Using tar 1.15.x the following equivalent command sets:
+#
+#   1. tar cf archive file1 file2 
+# and
+#   2. tar cfT archive /dev/null
+#      tar rf archive file1
+#      tar rt archive file2
+#
+# produced different archives (GNU format is assumed).  Namely, in the
+# second case the mode field of all members, except the first, was truncated
+# to lower 3 octets (& 0777).
+#
+# References:
+#   <200607210526.AA03440@tamuki.linet.gr.jp>
+#   http://lists.gnu.org/archive/html/bug-tar/2006-07/msg00029.html
+
+# The test case below verifies that the equivalent create and append commands
+# produce binary equivalent archives for all formats.
+
+AT_SETUP([append vs. create])
+AT_KEYWORDS([append append02 append-gnu])
+
+AT_TAR_CHECK([
+genfile --file file1
+genfile --file file2
+
+# For PAX archives, we need to make sure extended header names are
+# reproducible.
+if test $[]TEST_TAR_FORMAT = posix; then
+  TAR_OPTIONS="$TAR_OPTIONS --pax-option=exthdr.name=%d/PaxHeaders/%f"
+fi
+
+echo Creating archive.1
+tar cf archive.1 file1 file2
+
+echo Creating archive.2
+tar cfT archive.2 /dev/null
+tar rf archive.2 file1
+tar rf archive.2 file2
+
+echo Comparing archives
+cmp archive.1 archive.2
+],
+[0],
+[Creating archive.1
+Creating archive.2
+Comparing archives
+])
+
+AT_CLEANUP
+
+# End of append02.at