1 files changed, 49 insertions, 0 deletions
diff --git a/tests/t0200-gpt.sh b/tests/t0200-gpt.sh
new file mode 100755
index 0000000..cc0daaa
--- /dev/null
+++ b/tests/t0200-gpt.sh
@@ -0,0 +1,49 @@
+#!/bin/sh
+# Ensure that printing a GPT partition table does not modify it.
+
+# Copyright (C) 2009-2014, 2019-2023 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 3 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, see <http://www.gnu.org/licenses/>.
+
+. "${srcdir=.}/init.sh"; path_prepend_ ../parted
+
+N=2M
+dev=loop-file
+# create a file large enough to hold a GPT partition table
+dd if=/dev/null of=$dev bs=1 seek=$N || framework_failure
+
+# create a GPT partition table
+parted -s $dev mklabel gpt > out 2>&1 || fail=1
+# expect no output
+compare /dev/null out || fail=1
+
+# save a copy of the original primary GPT table
+dd if=$dev of=before count=1 skip=1 || fail=1
+
+# extend the backing file by 1 byte
+printf x >> $dev || fail=1
+
+# use parted simply to print the partition table
+parted -m -s $dev u s p > out 2> err || fail=1
+# don't bother comparing stdout
+# expect no stderr
+compare /dev/null err || fail=1
+
+# extract the primary GPT table again
+dd if=$dev of=after count=1 skip=1 || fail=1
+
+# compare partition tables (they had better be identical)
+compare before after || fail=1
+
+Exit $fail