2 files changed, 17 insertions, 0 deletions

diff --git a/tests/qemu-iotests/051 b/tests/qemu-iotests/051
index 8b51de3f3..8039e23ab 100755
--- a/tests/qemu-iotests/051
+++ b/tests/qemu-iotests/051
@@ -142,6 +142,13 @@ run_qemu -drive media=cdrom,cache=writethrough
 run_qemu -drive media=cdrom,cache=unsafe
 run_qemu -drive media=cdrom,cache=invalid_value
 
+echo
+echo === Specifying the protocol layer ===
+echo
+
+run_qemu -drive file=$TEST_IMG,file.driver=file
+run_qemu -drive file=$TEST_IMG,file.driver=qcow2
+
 # success, all done
 echo "*** done"
 rm -f $seq.full
diff --git a/tests/qemu-iotests/051.out b/tests/qemu-iotests/051.out
index 48456d5b0..3d1ac7b7d 100644
--- a/tests/qemu-iotests/051.out
+++ b/tests/qemu-iotests/051.out
@@ -159,4 +159,14 @@ qququiquit
 Testing: -drive media=cdrom,cache=invalid_value
 QEMU_PROG: -drive media=cdrom,cache=invalid_value: invalid cache option
 
+
+=== Specifying the protocol layer ===
+
+Testing: -drive file=TEST_DIR/t.qcow2,file.driver=file
+qququiquit

+
+Testing: -drive file=TEST_DIR/t.qcow2,file.driver=qcow2
+QEMU_PROG: -drive file=TEST_DIR/t.qcow2,file.driver=qcow2: Can't use 'qcow2' as a block driver for the protocol level
+QEMU_PROG: -drive file=TEST_DIR/t.qcow2,file.driver=qcow2: could not open disk image TEST_DIR/t.qcow2: Invalid argument
+
 *** done