qemu-iotests: Add qemu-img compare test

Simple test for qemu-img compare to check it's working correctly.

Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

1 files changed, 78 insertions, 0 deletions

diff --git a/tests/qemu-iotests/048 b/tests/qemu-iotests/048
new file mode 100755
index 0000000..7cce049
--- /dev/null
+++ b/tests/qemu-iotests/048
@@ -0,0 +1,78 @@
+#!/bin/bash
+##
+## qemu-img compare test
+##
+##
+## Copyright (C) 2013 Red Hat, 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, see <http://www.gnu.org/licenses/>.
+##
+#
+# creator
+owner=mrezanin@redhat.com
+
+seq=`basename $0`
+echo "QA output created by $seq"
+
+status=1        # failure is the default!
+
+_cleanup()
+{
+    echo "Cleanup"
+    _cleanup_test_img
+    rm ${TEST_IMG2}
+}
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+_compare()
+{
+    $QEMU_IMG compare "$@" $TEST_IMG ${TEST_IMG2}
+    echo $?
+}
+
+# get standard environment, filters and checks
+. ./common.rc
+. ./common.filter
+. ./common.pattern
+
+_supported_fmt raw qcow qcow2 qed
+_supported_proto file
+_supported_os Linux
+
+# Setup test basic parameters
+TEST_IMG2=$TEST_IMG.2
+CLUSTER_SIZE=4096
+size=1024M
+
+_make_test_img $size
+io_pattern write 524288 $CLUSTER_SIZE $CLUSTER_SIZE 4 45
+
+# Compare identical images
+cp $TEST_IMG ${TEST_IMG2}
+_compare
+_compare -q
+
+# Compare images with different size
+$QEMU_IMG resize $TEST_IMG +512M
+_compare
+_compare -s
+
+# Compare images with different content
+io_pattern write 1228800 $CLUSTER_SIZE 0 1 67
+_compare
+io_pattern write 0 $CLUSTER_SIZE 0 1 123
+_compare
+
+# Cleanup
+status=0