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diff --git a/src/test/java/org/onap/aai/spike/schema/GraphEventTransformerTest.java b/src/test/java/org/onap/aai/spike/schema/GraphEventTransformerTest.java
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+/**
+ * ============LICENSE_START=======================================================
+ * org.onap.aai
+ * ================================================================================
+ * Copyright © 2017-2018 AT&T Intellectual Property. All rights reserved.
+ * Copyright © 2017-2018 Amdocs
+ * ================================================================================
+ * Licensed 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.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.aai.spike.schema;
+
+import static org.junit.Assert.assertTrue;
+import static org.junit.Assert.fail;
+
+import java.io.BufferedReader;
+import java.io.File;
+import java.io.FileReader;
+import java.io.IOException;
+import javax.xml.bind.JAXBException;
+import org.junit.Before;
+import org.junit.Test;
+import org.onap.aai.spike.event.incoming.GizmoGraphEvent;
+import org.onap.aai.spike.exception.SpikeException;
+
+
+/**
+ * This set of tests validates the ability of the {@link GraphEventTransformer} to produce OXM model
+ * compliant representations of generic graph entities.
+ */
+public class GraphEventTransformerTest {
+
+    /**
+     * Performs all setup steps expected to be performed prior to each test.
+     */
+    @Before
+    public void setup() throws Exception {
+        // Load the OXM model definitions.
+        OXMModelLoader.loadModels();
+
+        // Load the relationship definitions.
+        System.setProperty("CONFIG_HOME", "src/test/resources/");
+        EdgeRulesLoader.loadModels();
+    }
+
+
+    /**
+     * Validates that, given a raw vertex from the graph abstraction layer, we can transform it into a
+     * JSON string which corresponds to the OXM model.
+     *
+     */
+    @Test
+    public void vertexToJsonTest() throws Exception {
+        // Instantiate the vertex that we will apply the translation to.
+        String vertexJson = readFileToString(new File("src/test/resources/vertex.json"));
+        GizmoGraphEvent graphEvent = GizmoGraphEvent.fromJson(vertexJson);
+        graphEvent.getVertex().getProperties().getAsJsonObject().addProperty("invalid-key1", "invalid-key2");
+
+
+        // Now, validate our raw vertex from OXM model
+        GraphEventTransformer.validateVertexModel(graphEvent.getVertex());
+
+        // Validate the marshalled string we got back against our OXM model.
+        assertTrue("Object failed to validate against OXM model.",
+                graphEvent.getVertex().getProperties().getAsJsonObject().get("invalid-key1") == null);
+    }
+
+    @Test
+    public void edgeToJsonTest() throws Exception {
+        // Instantiate the edge that we will apply the translation to.
+        String edgeJson = readFileToString(new File("src/test/resources/edge.json"));
+        GizmoGraphEvent graphEvent = GizmoGraphEvent.fromJson(edgeJson);
+        graphEvent.getRelationship().getProperties().getAsJsonObject().addProperty("invalid-key1", "invalid-key2");
+
+        // Now, validate our raw edge from relationship model
+        GraphEventTransformer.validateEdgeModel(graphEvent.getRelationship());
+
+        // Validate the marshalled string we got back against our relationship model.
+        assertTrue("Object failed to validate against OXM model.",
+                graphEvent.getRelationship().getProperties().getAsJsonObject().get("invalid-key1") == null);
+    }
+
+    /**
+     * This helper method reads the contents of a file into a simple string.
+     *
+     * @param file - The file to be imported.
+     * @return - The file contents expressed as a simple string.
+     * @throws IOException if there is a problem reading the file
+     */
+    public static String readFileToString(File file) throws IOException {
+
+        BufferedReader br = new BufferedReader(new FileReader(file));
+        try {
+            StringBuilder sb = new StringBuilder();
+            String line = br.readLine();
+
+            while (line != null) {
+                sb.append(line);
+                line = br.readLine();
+            }
+
+            return sb.toString().replaceAll("\\s+", "");
+        } finally {
+            try {
+                br.close();
+            } catch (IOException e) {
+                fail("Unexpected IOException: " + e.getMessage());
+            }
+        }
+    }
+}