Merge "[Trivial]Add coverage for extending non-blank volume"
diff --git a/tempest/api/volume/test_volumes_extend.py b/tempest/api/volume/test_volumes_extend.py
index 54052ae..362f4cc 100644
--- a/tempest/api/volume/test_volumes_extend.py
+++ b/tempest/api/volume/test_volumes_extend.py
@@ -32,7 +32,7 @@
     @decorators.idempotent_id('9a36df71-a257-43a5-9555-dc7c88e66e0e')
     def test_volume_extend(self):
         # Extend Volume Test.
-        volume = self.create_volume()
+        volume = self.create_volume(image_ref=self.image_ref)
         extend_size = volume['size'] + 1
         self.volumes_client.extend_volume(volume['id'],
                                           new_size=extend_size)