Fixes to in ports masked

Conflicts:
	test_data/of13/oxm_bsn_in_ports_masked_128.data
diff --git a/java_gen/templates/unit_test.java b/java_gen/templates/unit_test.java
index 47dcc24..7fb52bb 100644
--- a/java_gen/templates/unit_test.java
+++ b/java_gen/templates/unit_test.java
@@ -28,6 +28,7 @@
 //:: from loxi_ir import *
 //:: import itertools
 //:: import of_g
+//:: import java_gen.java_model as java_model
 //:: include('_copyright.java')
 
 //:: include('_autogen.java')
@@ -40,22 +41,25 @@
 import static org.junit.Assert.*;
 
 public class ${test.name} {
+    //:: factory = java_model.model.factory_of(test.interface)
     //:: var_type = msg.interface.name
     //:: var_name = msg.interface.variable_name
-    OFFactory factory;
+    //:: builder_method = factory.method_name(msg.interface)
+    //:: factory_impl = java_model.model.factory_of(test.interface).of_version(test.java_class.version).name
+    ${factory.name if factory.name is not None else OFFactory} factory;
 
     final static byte[] ${msg.constant_name}_SERIALIZED =
         new byte[] { ${", ".join("%s0x%x" % (("" if ord(c)<128 else "(byte) "),  ord(c)) for c in test_data["binary"] ) } };
 
     @Before
     public void setup() {
-        factory = OFFactories.getFactory(OFVersion.${version.constant_version});
+        factory = ${factory_impl + ".INSTANCE" if factory_impl is not None else "OFFactories.getFactory(OFVersion." + version.constant_version + ")"};
     }
 
     //:: if "java" in test_data:
     @Test
     public void testWrite() {
-        ${var_type}.Builder builder = factory.build${var_type[2:]}();
+        ${var_type}.Builder builder = factory.${builder_method}();
         ${test_data["java"]};
         ${var_type} ${var_name} = builder.build();
         ChannelBuffer bb = ChannelBuffers.dynamicBuffer();
@@ -68,7 +72,7 @@
 
     @Test
     public void testRead() throws Exception {
-        ${var_type}.Builder builder = factory.build${var_type[2:]}();
+        ${var_type}.Builder builder = factory.${builder_method}();
         ${test_data["java"]};
         ${var_type} ${var_name}Built = builder.build();