This patch updates test_stream_partial() to test that the block-stream
operation never copies data from the image specified as base.
Signed-off-by: Alberto Garcia <be...@igalia.com>
---
tests/qemu-iotests/030 | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/tests/qemu-iotests/030 b/tests/qemu-iotests/030
index 6e6cb5a..a395a03 100755
--- a/tests/qemu-iotests/030
+++ b/tests/qemu-iotests/030
@@ -94,6 +94,19 @@ class TestSingleDrive(iotests.QMPTestCase):
def test_stream_partial(self):
self.assert_no_active_block_jobs()
+ # This is a no-op: no data should ever be copied from the base image
+ result = self.vm.qmp('block-stream', device='drive0', base=mid_img)
+ self.assert_qmp(result, 'return', {})
+
+ self.wait_until_completed()
+
+ self.assert_no_active_block_jobs()
+
+ self.assertNotEqual(qemu_io('-f', iotests.imgfmt, '-c', 'map',
mid_img),
+ qemu_io('-f', iotests.imgfmt, '-c', 'map',
test_img),
+ 'image file map matches backing file after a
no-op')
+
+ # And this is the operation that actually copies data
result = self.vm.qmp('block-stream', device='drive0', base=backing_img)
self.assert_qmp(result, 'return', {})
--
2.1.4
