pyloxi: move remaining basic serialization tests to datafiles
diff --git a/test_data/of12/empty_match.data b/test_data/of12/empty_match.data
new file mode 100644
index 0000000..6e65a47
--- /dev/null
+++ b/test_data/of12/empty_match.data
@@ -0,0 +1,6 @@
+-- binary
+00 01 # type
+00 04 # length
+00 00 00 00 # padding
+-- python
+ofp.match()