#4 Recursive association

Add test to verify

Author: rfscholte

modello-core/src/test/java/org/codehaus/modello/core/DefaultModelloCoreTest.java

@@ -81,4 +81,11 @@ public void testModelWithDuplicateAssociations()
             assertEquals( "Duplicate field in MyClass: MyAssociation.", ex.getMessage() );
         }
     }
+    
+    public void testRecursion() throws Exception
+    {
+        ModelloCore modello = (ModelloCore) lookup( ModelloCore.ROLE );
+        
+        modello.loadModel( getTestFile( "src/test/resources/models/recursion.mdo" ) ); 
+    }
 }

modello-core/src/test/resources/models/recursion.mdo

@@ -0,0 +1,47 @@
+<!-- Licensed to the Apache Software Foundation (ASF) under one or more contributor 
+  license agreements. See the NOTICE file distributed with this work for additional 
+  information regarding copyright ownership. The ASF licenses this file to 
+  you under the Apache License, Version 2.0 (the "License"); you may not use 
+  this file except in compliance with the License. You may obtain a copy of 
+  the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required 
+  by applicable law or agreed to in writing, software distributed under the 
+  License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS 
+  OF ANY KIND, either express or implied. See the License for the specific 
+  language governing permissions and limitations under the License. -->
+
+<model xmlns="http://codehaus-plexus.github.io/MODELLO/1.8.0"
+  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+  xsi:schemaLocation="http://codehaus-plexus.github.io/MODELLO/1.8.0 http://codehaus-plexus.github.io/modello/xsd/modello-1.8.0.xsd">
+  <id>recursion</id>
+  <name>RecursionNode</name>
+  <defaults>
+    <default>
+      <key>package</key>
+      <value>com.github.jasminb.jsonapi.models.recursion</value>
+    </default>
+  </defaults>
+
+  <classes>
+    <class rootElement="true">
+      <name>RecursionNode</name>
+      <version>0.0.0+</version>
+      <fields>
+        <field>
+          <name>parent</name>
+          <association>
+            <multiplicity>1</multiplicity>
+            <type>RecursionNode</type>
+          </association>
+        </field>
+        <field>
+          <name>children</name>
+          <type>List</type>
+          <association>
+            <type>RecursionNode</type>
+            <multiplicity>*</multiplicity>
+          </association>
+        </field>
+      </fields>
+    </class>
+  </classes>
+</model>