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diff --git a/branches/sca-java-0.91/modules/interface/src/test/java/org/apache/tuscany/sca/interfacedef/impl/ContractCompatibilityTestCase.java b/branches/sca-java-0.91/modules/interface/src/test/java/org/apache/tuscany/sca/interfacedef/impl/ContractCompatibilityTestCase.java
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+/*
+ * 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.
+ */
+package org.apache.tuscany.sca.interfacedef.impl;
+
+import java.lang.reflect.Type;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+import junit.framework.TestCase;
+
+import org.apache.tuscany.sca.interfacedef.DataType;
+import org.apache.tuscany.sca.interfacedef.IncompatibleInterfaceContractException;
+import org.apache.tuscany.sca.interfacedef.Interface;
+import org.apache.tuscany.sca.interfacedef.InterfaceContract;
+import org.apache.tuscany.sca.interfacedef.InterfaceContractMapper;
+import org.apache.tuscany.sca.interfacedef.Operation;
+
+/**
+ * TODO some tests commented out due to DataType.equals() needing to be strict
+ * 
+ * @version $Rev$ $Date$
+ */
+public class ContractCompatibilityTestCase extends TestCase {
+
+    private InterfaceContractMapper mapper = new InterfaceContractMapperImpl();
+
+    public void testNoOperation() throws Exception {
+        InterfaceContract source = new MockContract("FooContract");
+        InterfaceContract target = new MockContract("FooContract");
+        mapper.checkCompatibility(source, target, false, false);
+    }
+
+    public void testBasic() throws Exception {
+        InterfaceContract source = new MockContract("FooContract");
+        Operation opSource1 = new OperationImpl("op1");
+        Map<String, Operation> sourceOperations = new HashMap<String, Operation>();
+        sourceOperations.put("op1", opSource1);
+        source.getInterface().getOperations().addAll(sourceOperations.values());
+        InterfaceContract target = new MockContract("FooContract");
+        Operation opSource2 = new OperationImpl("op1");
+        Map<String, Operation> targetOperations = new HashMap<String, Operation>();
+        targetOperations.put("op1", opSource2);
+        target.getInterface().getOperations().addAll(targetOperations.values());
+        mapper.checkCompatibility(source, target, false, false);
+    }
+
+    public void testBasicIncompatibleOperationNames() throws Exception {
+        InterfaceContract source = new MockContract("FooContract");
+        Operation opSource1 = new OperationImpl("op1");
+        Map<String, Operation> sourceOperations = new HashMap<String, Operation>();
+        sourceOperations.put("op1", opSource1);
+        source.getInterface().getOperations().addAll(sourceOperations.values());
+        InterfaceContract target = new MockContract("FooContract");
+        Operation opSource2 = new OperationImpl("op2");
+        Map<String, Operation> targetOperations = new HashMap<String, Operation>();
+        targetOperations.put("op2", opSource2);
+        target.getInterface().getOperations().addAll(targetOperations.values());
+        try {
+            mapper.checkCompatibility(source, target, false, false);
+            fail();
+        } catch (IncompatibleInterfaceContractException e) {
+            // expected
+        }
+    }
+
+    public void testInputTypes() throws Exception {
+        InterfaceContract source = new MockContract("FooContract");
+        List<DataType> sourceInputTypes = new ArrayList<DataType>();
+        sourceInputTypes.add(new DataTypeImpl<Type>(Object.class, Object.class));
+        DataType<List<DataType>> inputType = new DataTypeImpl<List<DataType>>(String.class, sourceInputTypes);
+        Operation opSource1 = new OperationImpl("op1");
+        opSource1.setInputType(inputType);
+        Map<String, Operation> sourceOperations = new HashMap<String, Operation>();
+        sourceOperations.put("op1", opSource1);
+        source.getInterface().getOperations().addAll(sourceOperations.values());
+
+        InterfaceContract target = new MockContract("FooContract");
+        List<DataType> targetInputTypes = new ArrayList<DataType>();
+        targetInputTypes.add(new DataTypeImpl<Type>(Object.class, Object.class));
+        DataType<List<DataType>> targetInputType = new DataTypeImpl<List<DataType>>(String.class, targetInputTypes);
+
+        Operation opTarget = new OperationImpl("op1");
+        opTarget.setInputType(targetInputType);
+        Map<String, Operation> targetOperations = new HashMap<String, Operation>();
+        targetOperations.put("op1", opTarget);
+        target.getInterface().getOperations().addAll(targetOperations.values());
+        mapper.checkCompatibility(source, target, false, false);
+    }
+
+    public void testIncompatibleInputTypes() throws Exception {
+        InterfaceContract source = new MockContract("FooContract");
+        List<DataType> sourceInputTypes = new ArrayList<DataType>();
+        sourceInputTypes.add(new DataTypeImpl<Type>(Integer.class, Integer.class));
+        DataType<List<DataType>> inputType = new DataTypeImpl<List<DataType>>(String.class, sourceInputTypes);
+        Operation opSource1 = new OperationImpl("op1");
+        opSource1.setInputType(inputType);
+        Map<String, Operation> sourceOperations = new HashMap<String, Operation>();
+        sourceOperations.put("op1", opSource1);
+        source.getInterface().getOperations().addAll(sourceOperations.values());
+
+        InterfaceContract target = new MockContract("FooContract");
+        List<DataType> targetInputTypes = new ArrayList<DataType>();
+        targetInputTypes.add(new DataTypeImpl<Type>(String.class, String.class));
+        DataType<List<DataType>> targetInputType = new DataTypeImpl<List<DataType>>(String.class, targetInputTypes);
+
+        Operation opTarget = new OperationImpl("op1");
+        opTarget.setInputType(targetInputType);
+        Map<String, Operation> targetOperations = new HashMap<String, Operation>();
+        targetOperations.put("op1", opTarget);
+        target.getInterface().getOperations().addAll(targetOperations.values());
+        try {
+            mapper.checkCompatibility(source, target, false, false);
+            fail();
+        } catch (IncompatibleInterfaceContractException e) {
+            // expected
+        }
+    }
+
+    /**
+     * Verfies source input types can be super types of the target
+     */
+    public void testSourceSuperTypeInputCompatibility() throws Exception {
+        // InterfaceContract source = new MockContract("FooContract");
+        // List<DataType> sourceInputTypes = new ArrayList<DataType>();
+        // sourceInputTypes.add(new DataTypeImpl<Type>(Object.class,
+        // Object.class));
+        // DataType<List<DataType>> inputType = new
+        // DataTypeImpl<List<DataType>>(String.class, sourceInputTypes);
+        // Operation opSource1 = new OperationImpl("op1", inputType, null, null,
+        // false, null);
+        // Map<String, Operation> sourceOperations = new HashMap<String,
+        // Operation>();
+        // sourceOperations.put("op1", opSource1);
+        // source.getInterface().getOperations().addAll(sourceOperations.values());
+        //
+        // InterfaceContract target = new MockContract("FooContract");
+        // List<DataType> targetInputTypes = new ArrayList<DataType>();
+        // targetInputTypes.add(new DataTypeImpl<Type>(String.class,
+        // String.class));
+        // DataType<List<DataType>> targetInputType =
+        // new DataTypeImpl<List<DataType>>(String.class, targetInputTypes);
+        //
+        // Operation opTarget = new OperationImpl("op1", targetInputType, null,
+        // null, false, null);
+        // Map<String, Operation> targetOperations = new HashMap<String,
+        // Operation>();
+        // targetOperations.put("op1", opTarget);
+        // target.getInterface().getOperations().addAll(targetOperations.values());
+        // wireService.checkCompatibility(source, target, false);
+    }
+
+    public void testOutputTypes() throws Exception {
+        InterfaceContract source = new MockContract("FooContract");
+        DataType sourceOutputType = new DataTypeImpl<Type>(String.class, String.class);
+        Operation opSource1 = new OperationImpl("op1");
+        opSource1.setOutputType(sourceOutputType);
+        Map<String, Operation> sourceOperations = new HashMap<String, Operation>();
+        sourceOperations.put("op1", opSource1);
+        source.getInterface().getOperations().addAll(sourceOperations.values());
+
+        InterfaceContract target = new MockContract("FooContract");
+        DataType targetOutputType = new DataTypeImpl<Type>(String.class, String.class);
+        Operation opTarget = new OperationImpl("op1");
+        opTarget.setOutputType(targetOutputType);
+        Map<String, Operation> targetOperations = new HashMap<String, Operation>();
+        targetOperations.put("op1", opTarget);
+        target.getInterface().getOperations().addAll(targetOperations.values());
+        mapper.checkCompatibility(source, target, false, false);
+    }
+
+    /**
+     * Verfies a return type that is a supertype of of the target is compatible
+     */
+    public void testSupertypeOutputTypes() throws Exception {
+        // InterfaceContract source = new MockContract("FooContract");
+        // DataType sourceOutputType = new DataTypeImpl<Type>(Object.class,
+        // Object.class);
+        // Operation opSource1 = new OperationImpl("op1", null,
+        // sourceOutputType, null, false, null);
+        // Map<String, Operation> sourceOperations = new HashMap<String,
+        // Operation>();
+        // sourceOperations.put("op1", opSource1);
+        // source.getInterface().getOperations().addAll(sourceOperations.values());
+        //
+        // InterfaceContract target = new MockContract("FooContract");
+        // DataType targetOutputType = new DataTypeImpl<Type>(String.class,
+        // String.class);
+        // Operation opTarget = new OperationImpl("op1", null, targetOutputType,
+        // null, false, null);
+        // Map<String, Operation> targetOperations = new HashMap<String,
+        // Operation>();
+        // targetOperations.put("op1", opTarget);
+        // target.getInterface().getOperations().addAll(targetOperations.values());
+        // wireService.checkCompatibility(source, target, false);
+    }
+
+    public void testIncompatibleOutputTypes() throws Exception {
+        InterfaceContract source = new MockContract("FooContract");
+        DataType sourceOutputType = new DataTypeImpl<Type>(String.class, String.class);
+        Operation opSource1 = new OperationImpl("op1");
+        opSource1.setOutputType(sourceOutputType);
+        Map<String, Operation> sourceOperations = new HashMap<String, Operation>();
+        sourceOperations.put("op1", opSource1);
+        source.getInterface().getOperations().addAll(sourceOperations.values());
+
+        InterfaceContract target = new MockContract("FooContract");
+        DataType targetOutputType = new DataTypeImpl<Type>(Integer.class, Integer.class);
+        Operation opTarget = new OperationImpl("op1");
+        opTarget.setOutputType(targetOutputType);
+        Map<String, Operation> targetOperations = new HashMap<String, Operation>();
+        targetOperations.put("op1", opTarget);
+        target.getInterface().getOperations().addAll(targetOperations.values());
+        try {
+            mapper.checkCompatibility(source, target, false, false);
+            fail();
+        } catch (IncompatibleInterfaceContractException e) {
+            // expected
+        }
+    }
+
+    public void testFaultTypes() throws Exception {
+        InterfaceContract source = new MockContract("FooContract");
+        DataType sourceFaultType = new DataTypeImpl<Type>(String.class, String.class);
+        List<DataType> sourceFaultTypes = new ArrayList<DataType>();
+        sourceFaultTypes.add(0, sourceFaultType);
+        Operation opSource1 = new OperationImpl("op1");
+        opSource1.setFaultTypes(sourceFaultTypes);
+        Map<String, Operation> sourceOperations = new HashMap<String, Operation>();
+        sourceOperations.put("op1", opSource1);
+        source.getInterface().getOperations().addAll(sourceOperations.values());
+
+        InterfaceContract target = new MockContract("FooContract");
+        DataType targetFaultType = new DataTypeImpl<Type>(String.class, String.class);
+        List<DataType> targetFaultTypes = new ArrayList<DataType>();
+        targetFaultTypes.add(0, targetFaultType);
+
+        Operation opTarget = new OperationImpl("op1");
+        opTarget.setFaultTypes(targetFaultTypes);
+        Map<String, Operation> targetOperations = new HashMap<String, Operation>();
+        targetOperations.put("op1", opTarget);
+        target.getInterface().getOperations().addAll(targetOperations.values());
+        mapper.checkCompatibility(source, target, false, false);
+    }
+
+    public void testSourceFaultTargetNoFaultCompatibility() throws Exception {
+        InterfaceContract source = new MockContract("FooContract");
+        DataType sourceFaultType = new DataTypeImpl<Type>(String.class, String.class);
+        List<DataType> sourceFaultTypes = new ArrayList<DataType>();
+        sourceFaultTypes.add(0, sourceFaultType);
+        Operation opSource1 = new OperationImpl("op1");
+        opSource1.setFaultTypes(sourceFaultTypes);
+        Map<String, Operation> sourceOperations = new HashMap<String, Operation>();
+        sourceOperations.put("op1", opSource1);
+        source.getInterface().getOperations().addAll(sourceOperations.values());
+
+        InterfaceContract target = new MockContract("FooContract");
+        Operation opTarget = new OperationImpl("op1");
+        Map<String, Operation> targetOperations = new HashMap<String, Operation>();
+        targetOperations.put("op1", opTarget);
+        target.getInterface().getOperations().addAll(targetOperations.values());
+        mapper.checkCompatibility(source, target, false, false);
+    }
+
+    /**
+     * Verifies a source's fault which is a supertype of the target's fault are
+     * compatibile
+     * 
+     * @throws Exception
+     */
+    public void testFaultSuperTypes() throws Exception {
+        // InterfaceContract source = new MockContract("FooContract");
+        // DataType sourceFaultType = new DataTypeImpl<Type>(Exception.class,
+        // Exception.class);
+        // List<DataType> sourceFaultTypes = new ArrayList<DataType>();
+        // sourceFaultTypes.add(0, sourceFaultType);
+        // Operation opSource1 = new OperationImpl("op1", null, null,
+        // sourceFaultTypes, false, null);
+        // Map<String, Operation> sourceOperations = new HashMap<String,
+        // Operation>();
+        // sourceOperations.put("op1", opSource1);
+        // source.getInterface().getOperations().addAll(sourceOperations.values());
+        //
+        // InterfaceContract target = new MockContract("FooContract");
+        // DataType targetFaultType = new
+        // DataTypeImpl<Type>(TuscanyException.class, TuscanyException.class);
+        // List<DataType> targetFaultTypes = new ArrayList<DataType>();
+        // targetFaultTypes.add(0, targetFaultType);
+        //
+        // Operation opTarget = new OperationImpl("op1", null, null,
+        // targetFaultTypes, false, null);
+        // Map<String, Operation> targetOperations = new HashMap<String,
+        // Operation>();
+        // targetOperations.put("op1", opTarget);
+        // target.getInterface().getOperations().addAll(targetOperations.values());
+        // wireService.checkCompatibility(source, target, false);
+    }
+
+    /**
+     * Verifies a source's faults which are supertypes and a superset of the
+     * target's faults are compatibile
+     */
+    public void testFaultSuperTypesAndSuperset() throws Exception {
+        // InterfaceContract source = new MockContract("FooContract");
+        // DataType sourceFaultType = new DataTypeImpl<Type>(Exception.class,
+        // Exception.class);
+        // DataType sourceFaultType2 = new
+        // DataTypeImpl<Type>(RuntimeException.class, RuntimeException.class);
+        // List<DataType> sourceFaultTypes = new ArrayList<DataType>();
+        // sourceFaultTypes.add(0, sourceFaultType);
+        // sourceFaultTypes.add(1, sourceFaultType2);
+        // Operation opSource1 = new OperationImpl("op1", null, null,
+        // sourceFaultTypes, false, null);
+        // Map<String, Operation> sourceOperations = new HashMap<String,
+        // Operation>();
+        // sourceOperations.put("op1", opSource1);
+        // source.getInterface().getOperations().addAll(sourceOperations.values());
+        //
+        // InterfaceContract target = new MockContract("FooContract");
+        // DataType targetFaultType = new
+        // DataTypeImpl<Type>(TuscanyException.class, TuscanyException.class);
+        // List<DataType> targetFaultTypes = new ArrayList<DataType>();
+        // targetFaultTypes.add(0, targetFaultType);
+        //
+        // Operation opTarget = new OperationImpl("op1", null, null,
+        // targetFaultTypes, false, null);
+        // Map<String, Operation> targetOperations = new HashMap<String,
+        // Operation>();
+        // targetOperations.put("op1", opTarget);
+        // target.getInterface().getOperations().addAll(targetOperations.values());
+        // wireService.checkCompatibility(source, target, false);
+    }
+
+    private static class MockInterface extends InterfaceImpl {
+
+    }
+
+    private class MockContract<T> extends InterfaceContractImpl {
+        public MockContract() {
+        }
+
+        public MockContract(String interfaceClass) {
+            Interface jInterface = new MockInterface();
+            jInterface.setUnresolved(true);
+            setInterface(jInterface);
+        }
+    }
+
+}