[AAI-26] Adding gizmo data to the repository.

Change-Id: I183f837d45acbfe3c673fde1acf8768d5e3fd37b
Signed-off-by: Shwetank Dave <shwetank.dave@amdocs.com>

2 files changed, 646 insertions, 0 deletions

diff --git a/src/test/java/org/openecomp/crud/dao/champ/ChampDaoTest.java b/src/test/java/org/openecomp/crud/dao/champ/ChampDaoTest.java
new file mode 100644
index 0000000..b11e274
--- /dev/null
+++ b/src/test/java/org/openecomp/crud/dao/champ/ChampDaoTest.java
@@ -0,0 +1,624 @@
+package org.openecomp.crud.dao.champ;
+
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Ignore;
+import org.junit.Test;
+import org.openecomp.crud.dao.GraphDao;
+import org.openecomp.crud.entity.Edge;
+import org.openecomp.crud.entity.Vertex;
+import org.openecomp.crud.exception.CrudException;
+
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.Properties;
+
+import static org.junit.Assert.*;
+
+
+/**
+ * This suite of tests validates the basic functionality of the {@link ChampDao}.
+ */
+public class ChampDaoTest {
+
+  private static final String GRAPH_NAME = "my_test_graph";
+
+  private GraphDao champDao = null;
+
+
+  /**
+   * Perform setup steps that must be done prior to executing each test.
+   */
+  @Before
+  public void setup() {
+
+    // Create an instance of the Champ DAO, backed by the Champ library's in-memory back end
+    // for testing purposes.
+    Properties champDaoProperties = new Properties();
+    champDaoProperties.put(ChampDao.CONFIG_STORAGE_BACKEND, "in-memory");
+    champDaoProperties.put(ChampDao.CONFIG_GRAPH_NAME, GRAPH_NAME);
+    champDao = new ChampDao(champDaoProperties);
+  }
+
+
+  /**
+   * Perform tear down steps that must be done after executing each test.
+   */
+  @After
+  public void tearDown() {
+
+    // Release the Champ DAO instance that we were using for the test.
+    if (champDao != null) {
+      ((ChampDao) champDao).close();
+    }
+  }
+
+
+  /**
+   * Tests the ability of the {@link ChampDao} to create a vertex.
+   *
+   * @throws CrudException
+   */
+  @Test
+  public void createVertexTest() throws CrudException {
+
+    String VERTEX_TYPE = "Test_Vertex";
+
+    Map<String, Object> properties = new HashMap<String, Object>();
+    properties.put("property1", "something");
+    properties.put("property2", "something else");
+
+    // Create the vertex.
+    Vertex createdVertex = champDao.addVertex(VERTEX_TYPE, properties);
+
+    // Validate that the returned {@link Vertex} has the right label assigned to it.
+    assertTrue("Unexpected vertex type '" + createdVertex.getType() + "' returned from DAO",
+        createdVertex.getType().equals(VERTEX_TYPE));
+
+    // Validate that all of the properties that we provided to the DAO are in fact assigned
+    // to the {@link Vertex} that we got back.
+    assertTrue("Vertex property list returned from DAO did not contain all expected properties - expected: " +
+            properties.keySet() + " actual: " + createdVertex.getProperties().keySet(),
+        createdVertex.getProperties().keySet().containsAll(properties.keySet()));
+
+    // Validate that the values assigned to the properties in the returned {@link Vertex}
+    // match the ones that we provided.
+    for (String propertyKey : properties.keySet()) {
+
+      assertTrue(createdVertex.getProperties().get(propertyKey).equals(properties.get(propertyKey)));
+    }
+  }
+
+
+  /**
+   * Tests the ability of the {@link ChampDao} to retrieve a vertex from the graph data store
+   * by its unique identifier.
+   *
+   * @throws CrudException
+   */
+  @Test
+  public void getVertexByIdTest() throws CrudException {
+
+    String VERTEX_TYPE = "Test_Vertex";
+
+    Map<String, Object> properties = new HashMap<String, Object>();
+    properties.put("property1", "something");
+    properties.put("property2", "something else");
+
+    // Create the vertex.
+    Vertex createdVertex = champDao.addVertex(VERTEX_TYPE, properties);
+
+    // Make sure the {@link Vertex} returned from the create method includes an id that we can
+    // use to retrieve it.
+    assertTrue("No valid id returned for the created vertex", createdVertex.getId().isPresent());
+
+    // Now, retrieve the {@link Vertex} by its identifier.
+    Vertex retrievedVertex = champDao.getVertex(createdVertex.getId().get(), VERTEX_TYPE);
+
+    // Validate that the retrieved {@link Vertex} has the right label assigned to it.
+    assertTrue("Unexpected vertex type '" + retrievedVertex.getType() + "' returned from DAO",
+        retrievedVertex.getType().equals(VERTEX_TYPE));
+
+    // Validate that all of the properties that we provided when we created the {@link Vertex}
+    // are present in the {@link Vertex} that we retrieved.
+    assertTrue("Vertex property list returned from DAO did not contain all expected properties - expected: " +
+            properties.keySet() + " actual: " + retrievedVertex.getProperties().keySet(),
+        retrievedVertex.getProperties().keySet().containsAll(properties.keySet()));
+
+    // Validate that the values assigned to the properties in the retrieved {@link Vertex}
+    // match the ones that we provided when we created it.
+    for (String propertyKey : properties.keySet()) {
+
+      assertTrue(retrievedVertex.getProperties().get(propertyKey).equals(properties.get(propertyKey)));
+    }
+  }
+
+
+  /**
+   * Tests the ability of the {@link ChampDao} to update an already existing vertex.
+   *
+   * @throws CrudException
+   */
+  @Test
+  public void updateVertexTest() throws CrudException {
+
+    final String VERTEX_TYPE = "Test_Vertex";
+
+    Map<String, Object> properties = new HashMap<String, Object>();
+    properties.put("property1", "something");
+    properties.put("property2", "something else");
+
+    // Create the vertex.
+    Vertex createdVertex = champDao.addVertex(VERTEX_TYPE, properties);
+
+    // Make sure the {@link Vertex} returned from the create method includes an id that we can
+    // use to retrieve it.
+    assertTrue("No valid id returned for the created vertex", createdVertex.getId().isPresent());
+
+    // Modify the properties list...
+    properties.put("property3", "a new property");
+    properties.remove("property1");
+
+    // ...and apply it to our vertex.
+    Vertex updatedVertex = champDao.updateVertex(createdVertex.getId().get(), createdVertex.getType(), properties);
+
+    assertTrue("Vertex property list returned from DAO update operation did not contain all expected properties - expected: " +
+            properties.keySet() + " actual: " + updatedVertex.getProperties().keySet(),
+        updatedVertex.getProperties().keySet().containsAll(properties.keySet()));
+
+    // Validate that the values assigned to the properties in the updated {@link Vertex}
+    // match the ones that we provided when we created it.
+    for (String propertyKey : properties.keySet()) {
+
+      assertTrue("Unexpected value for property '" + propertyKey + "' - Expected: " +
+              properties.get(propertyKey) + "  Actual: " +
+              updatedVertex.getProperties().get(propertyKey),
+          updatedVertex.getProperties().get(propertyKey).equals(properties.get(propertyKey)));
+    }
+
+    // Validate that the property that we removed is NOT in the set of properties from our
+    // updated {@link Vertex}.
+    assertFalse("Property 'property1' should no longer be associated with updated vertex",
+        updatedVertex.getProperties().containsKey("property1"));
+  }
+
+
+  /**
+   * Tests the ability of the {@link ChampDao} to retrieve multiple vertices which match
+   * a particular set of supplied properties.
+   *
+   * @throws CrudException
+   */
+  @Test
+  public void getVerticesTest() throws CrudException {
+
+    final String FIRST_VERTEX_TYPE = "pserver";
+    final String SECOND_VERTEX_TYPE = "complex";
+
+    // Create some vertices.
+
+    Map<String, Object> vertex1Properties = new HashMap<String, Object>();
+    vertex1Properties.put("O/S", "Linux");
+    vertex1Properties.put("version", "6.5");
+    vertex1Properties.put("hostname", "kll0001");
+    champDao.addVertex(FIRST_VERTEX_TYPE, vertex1Properties);
+
+    Map<String, Object> vertex2Properties = new HashMap<String, Object>();
+    vertex2Properties.put("O/S", "Linux");
+    vertex2Properties.put("version", "6.5");
+    vertex2Properties.put("hostname", "kll0002");
+    champDao.addVertex(FIRST_VERTEX_TYPE, vertex2Properties);
+
+    Map<String, Object> vertex3Properties = new HashMap<String, Object>();
+    vertex3Properties.put("O/S", "Linux");
+    vertex3Properties.put("version", "7.2");
+    vertex3Properties.put("hostname", "kll0003");
+    champDao.addVertex(FIRST_VERTEX_TYPE, vertex3Properties);
+
+    Map<String, Object> vertex4Properties = new HashMap<String, Object>();
+    vertex4Properties.put("O/S", "Windows");
+    vertex4Properties.put("version", "10");
+    vertex4Properties.put("hostname", "Dev Laptop");
+    champDao.addVertex(FIRST_VERTEX_TYPE, vertex4Properties);
+
+    Map<String, Object> vertex5Properties = new HashMap<String, Object>();
+    vertex5Properties.put("Street", "Baker");
+    vertex5Properties.put("Number", "222B");
+    champDao.addVertex(SECOND_VERTEX_TYPE, vertex5Properties);
+
+    // Create a set of properties to use for our query.
+    Map<String, Object> queryProperties = new HashMap<String, Object>();
+    queryProperties.put("O/S", "Linux");
+    queryProperties.put("version", "6.5");
+
+    // Validate that we filter our 'get vertices' results by type
+    List<Vertex> allVerticesByType = champDao.getVertices(FIRST_VERTEX_TYPE, MapBuilder.builder().build());
+    for (Vertex v : allVerticesByType) {
+      assertTrue("Unexpected vertex type returned from query.  Expected: " +
+              FIRST_VERTEX_TYPE + " Actual: " + v.getType(),
+          v.getType().equals(FIRST_VERTEX_TYPE));
+    }
+
+    // Now, request the vertices that match our parameters.
+    List<Vertex> vertices = champDao.getVertices(FIRST_VERTEX_TYPE, queryProperties);
+
+    // Validate that got back the expected number of vertices.
+    assertEquals(vertices.size(), 2);
+
+    // Validate that the vertices we got back contain the expected parameters.
+    for (Vertex v : vertices) {
+
+      assertTrue("Vertex from query result does not contain expected vertex 'O/S'",
+          v.getProperties().containsKey("O/S"));
+      assertTrue("Vertex from query result contains unexpected value for 'O/S' parameter - Expected: 'Linux'  Actual: '" +
+              v.getProperties().get("O/S") + "'",
+          v.getProperties().get("O/S").equals("Linux"));
+
+      assertTrue("Vertex from query result does not contain expected vertex 'O/S'",
+          v.getProperties().containsKey("version"));
+      assertTrue("Vertex from query result contains unexpected value for 'O/S' parameter - Expected: 'Linux'  Actual: '" +
+              v.getProperties().get("O/S") + "'",
+          v.getProperties().get("version").equals("6.5"));
+    }
+  }
+
+  @Test
+  public void deleteVertexTest() throws CrudException {
+
+    boolean deletedVertexNotFound = false;
+
+    // Create a vertex.
+    Vertex createdVertex = champDao.addVertex("test_type", MapBuilder.builder()
+        .withKeyValue("O/S", "Linux")
+        .withKeyValue("version", "6.5")
+        .withKeyValue("hostname", "kll0001")
+        .build());
+
+    // Verify that we can retrieve the vertex from the graph data base.
+    Vertex retrievedVertex = champDao.getVertex(createdVertex.getId().get(), "test_type");
+
+    // Now, delete the vertex.
+    champDao.deleteVertex(createdVertex.getId().get(), "test_type");
+
+    // Now, try to retrieve it again.  This time we should fail to find it.
+    try {
+      champDao.getVertex(createdVertex.getId().get(), "test_type");
+
+    } catch (CrudException e) {
+      assertTrue(e.getMessage().contains("No vertex with id"));
+      deletedVertexNotFound = true;
+    }
+
+    assertTrue("Should not have been able to retrieve deleted vertex", deletedVertexNotFound);
+  }
+
+  @Test
+  public void createEdgeTest() throws CrudException {
+
+    String EDGE_TYPE = "has";
+
+    // Create the source vertex for the edge.
+    Map<String, Object> srcVertexProperties = new HashMap<String, Object>();
+    srcVertexProperties.put("O/S", "Linux");
+    srcVertexProperties.put("version", "6.5");
+    srcVertexProperties.put("hostname", "kll0001");
+    Vertex sourceVertex = champDao.addVertex("vserver", srcVertexProperties);
+
+    // Create the target vertex for the edge.
+    Map<String, Object> dstVertexProperties = new HashMap<String, Object>();
+    dstVertexProperties.put("O/S", "Linux");
+    dstVertexProperties.put("version", "6.5");
+    dstVertexProperties.put("hostname", "kll0002");
+    Vertex destVertex = champDao.addVertex("VNF", dstVertexProperties);
+
+    // Now, create the edge itself.
+    Map<String, Object> edgeProperties = new HashMap<String, Object>();
+    edgeProperties.put("prop", "val");
+    Edge createdEdge = champDao.addEdge("has", sourceVertex, destVertex, edgeProperties);
+
+    // Validate that the Edge object returned from the create method matches what we were
+    // trying to create.
+    assertTrue("Unexpected type for Edge returned from create method.  Expected: " + EDGE_TYPE
+            + " Actual: " + createdEdge.getType(),
+        createdEdge.getType().equals("has"));
+    assertTrue("Unexpected properties for Edge returned from create method.  Expected: " + edgeProperties
+            + " Actual: " + createdEdge.getProperties(),
+        createdEdge.getProperties().equals(edgeProperties));
+
+  }
+
+  @Test
+  public void createEdgeWithMissingSrcOrTargetTest() throws CrudException {
+
+    String EDGE_TYPE = "has";
+
+    // Create the source vertex for the edge.
+    Map<String, Object> srcVertexProperties = new HashMap<String, Object>();
+    srcVertexProperties.put("O/S", "Linux");
+    srcVertexProperties.put("version", "6.5");
+    srcVertexProperties.put("hostname", "kll0001");
+    Vertex sourceVertex = champDao.addVertex("vserver", srcVertexProperties);
+
+    // Create the target vertex for the edge.
+    Map<String, Object> dstVertexProperties = new HashMap<String, Object>();
+    dstVertexProperties.put("O/S", "Linux");
+    dstVertexProperties.put("version", "6.5");
+    dstVertexProperties.put("hostname", "kll0002");
+    Vertex destVertex = champDao.addVertex("VNF", dstVertexProperties);
+
+    // Now, try creating the Edge but specify an id for the source vertex that does
+    // not exist.
+    Map<String, Object> edgeProperties = new HashMap<String, Object>();
+    edgeProperties.put("prop", "val");
+    try {
+      champDao.addEdge(EDGE_TYPE, new Vertex.Builder("miss").id("99").build(), destVertex, edgeProperties);
+    } catch (CrudException e) {
+      assertTrue(e.getMessage().contains("Error creating edge - source vertex"));
+    }
+
+    // Now, try created the Edge with a valid source vertex, but specify an id for the
+    // target vertex that does not exist.
+    try {
+      champDao.addEdge(EDGE_TYPE, sourceVertex, new Vertex.Builder("miss").id("99").build(), edgeProperties);
+    } catch (CrudException e) {
+      assertTrue(e.getMessage().contains("Error creating edge - target vertex"));
+    }
+
+  }
+
+  @Test
+  public void getEdgeByIdTest() throws CrudException {
+
+    String EDGE_TYPE = "has";
+
+    // Create the source vertex for the edge.
+    Map<String, Object> srcVertexProperties = new HashMap<String, Object>();
+    srcVertexProperties.put("O/S", "Linux");
+    srcVertexProperties.put("version", "6.5");
+    srcVertexProperties.put("hostname", "kll0001");
+    Vertex sourceVertex = champDao.addVertex("vserver", srcVertexProperties);
+
+    // Create the target vertex for the edge.
+    Map<String, Object> dstVertexProperties = new HashMap<String, Object>();
+    dstVertexProperties.put("O/S", "Linux");
+    dstVertexProperties.put("version", "6.5");
+    dstVertexProperties.put("hostname", "kll0002");
+    Vertex destVertex = champDao.addVertex("VNF", dstVertexProperties);
+
+    // Now, create the edge itself.
+    Map<String, Object> edgeProperties = new HashMap<String, Object>();
+    edgeProperties.put("prop", "val");
+    Edge createdEdge = champDao.addEdge("has", sourceVertex, destVertex, edgeProperties);
+
+    // Retrieve the edge we just created by specifying its unique identifier.
+    Edge retrievedEdge = champDao.getEdge(createdEdge.getId().get(), "has");
+
+    // Validate that the contents of the object that we got back matches what we thought we
+    // created.
+    assertTrue("Unexpected type for Edge returned from get method.  Expected: " + EDGE_TYPE
+            + " Actual: " + retrievedEdge.getType(),
+        retrievedEdge.getType().equals(EDGE_TYPE));
+    assertTrue("Unexpected properties for Edge returned from get method.  Expected: " + edgeProperties
+            + " Actual: " + retrievedEdge.getProperties(),
+        retrievedEdge.getProperties().equals(edgeProperties));
+  }
+
+  @Test
+  public void getEdgesTest() throws CrudException {
+
+    final String EDGE_TYPE_HAS = "has";
+    final String EDGE_TYPE_RUNS = "runs";
+
+    // Create some vertices and edges that we can query agains.
+    Vertex complex = champDao.addVertex("complex", MapBuilder.builder()
+        .withKeyValue("Province", "Ontario")
+        .withKeyValue("City", "Ottawa")
+        .withKeyValue("Street", "303 Terry Fox")
+        .build());
+
+    Vertex vserver = champDao.addVertex("vserver", MapBuilder.builder()
+        .withKeyValue("O/S", "Linux")
+        .withKeyValue("version", "6.5")
+        .withKeyValue("hostname", "kll0001")
+        .build());
+
+    Vertex vnf1 = champDao.addVertex("vserver", MapBuilder.builder()
+        .withKeyValue("Application", "OpenDaylight")
+        .build());
+
+    Vertex vnf2 = champDao.addVertex("vserver", MapBuilder.builder()
+        .withKeyValue("Application", "Cammunda")
+        .build());
+
+    Edge edge1 = champDao.addEdge(EDGE_TYPE_HAS, complex, vserver,
+        MapBuilder.builder()
+            .withKeyValue("usesResource", "false")
+            .withKeyValue("hasDelTarget", "false")
+            .build());
+
+    Edge edge2 = champDao.addEdge(EDGE_TYPE_RUNS, vserver, vnf1,
+        MapBuilder.builder()
+            .withKeyValue("usesResource", "false")
+            .withKeyValue("hasDelTarget", "true")
+            .build());
+
+    Edge edge3 = champDao.addEdge(EDGE_TYPE_RUNS, vserver, vnf2,
+        MapBuilder.builder()
+            .withKeyValue("usesResource", "false")
+            .withKeyValue("hasDelTarget", "false")
+            .build());
+
+    // Query for all HAS edges.
+    List<Edge> hasEdges = champDao.getEdges(EDGE_TYPE_HAS, new HashMap<String, Object>());
+
+    assertEquals("Unexpected number of edges of type 'has' found.  Expected: 1 Actual: " + hasEdges.size(),
+        hasEdges.size(), 1);
+    assertTrue("Result of query for 'has' type edges does not contain the expected results",
+        containsEdge(edge1, hasEdges));
+
+    // Query for all RUNS edges.
+    List<Edge> runsEdges = champDao.getEdges(EDGE_TYPE_RUNS, new HashMap<String, Object>());
+
+    assertEquals("Unexpected number of edges of type 'runs' found.  Expected: 2 Actual: " + runsEdges.size(),
+        runsEdges.size(), 2);
+    assertTrue("Result of query for 'runs' type edges does not contain the expected results",
+        containsEdge(edge2, runsEdges));
+    assertTrue("Result of query for 'runs' type edges does not contain the expected results",
+        containsEdge(edge2, runsEdges));
+
+    // Query for all HAS edges with the property 'hasDelTarget' equal to 'true'.
+    List<Edge> runsEdgesWithDelTargetTrue =
+        champDao.getEdges(EDGE_TYPE_RUNS, MapBuilder.builder()
+            .withKeyValue("hasDelTarget", "true")
+            .build());
+
+    assertEquals("Unexpected number of edges of type 'has' with 'hasDelTarget=true' found.  Expected: 1 Actual: "
+            + runsEdgesWithDelTargetTrue.size(),
+        runsEdgesWithDelTargetTrue.size(), 1);
+    assertTrue("Result of query for 'runs' type edges with delTarget set to TRUE does not contain the expected results",
+        containsEdge(edge2, runsEdgesWithDelTargetTrue));
+  }
+
+  @Test
+  @Ignore   // For now - pending some expected fixes to the Champ library.
+  public void updateEdgeTest() throws CrudException {
+
+    // Create the source vertex for the edge.
+    Vertex sourceVertex = champDao.addVertex("vserver", MapBuilder.builder()
+        .withKeyValue("O/S", "Linux")
+        .withKeyValue("version", "6.5")
+        .withKeyValue("hostname", "kll0001")
+        .build());
+
+    // Create the target vertex for the edge.
+    Vertex destVertex = champDao.addVertex("VNF", MapBuilder.builder()
+        .withKeyValue("O/S", "Linux")
+        .withKeyValue("version", "6.5")
+        .withKeyValue("hostname", "kll0002")
+        .build());
+
+    // Now, create the edge itself.
+    Edge createdEdge = champDao.addEdge("has",
+        sourceVertex,
+        destVertex,
+        MapBuilder.builder()
+            .withKeyValue("key1", "value1")
+            .withKeyValue("key2", "value2")
+            .withKeyValue("key3", "value3")
+            .build());
+
+    // Make sure the Edge returned from the create method includes an id that we can
+    // use to retrieve it.
+    assertTrue("No valid id returned for the created edge", createdEdge.getId().isPresent());
+
+    // Retrieve the properties map for our edge and make some changes.
+    Map<String, Object> properties = createdEdge.getProperties();
+    properties.put("key4", "value4");
+    properties.remove("key2");
+
+    // Now update the edge with the new properties map.
+    Edge updatedEdge = champDao.updateEdge(createdEdge);
+
+    assertTrue("Edge property list returned from DAO update operation did not contain all expected properties - expected: " +
+            properties.keySet() + " actual: " + updatedEdge.getProperties().keySet(),
+        updatedEdge.getProperties().keySet().containsAll(properties.keySet()));
+
+    // Validate that the values assigned to the properties in the updated Edge
+    // match the ones that we provided when we created it.
+    for (String propertyKey : properties.keySet()) {
+
+      assertTrue("Unexpected value for property '" + propertyKey + "' - Expected: " +
+              properties.get(propertyKey) + "  Actual: " +
+              updatedEdge.getProperties().get(propertyKey),
+          updatedEdge.getProperties().get(propertyKey).equals(properties.get(propertyKey)));
+    }
+
+    // Validate that the property that we removed is NOT in the set of properties from our
+    // updated edge.
+    // *** We will leave this validation commented out for now, as the Champ library actually
+    //     merges update properties instead of replacing them...
+//		assertFalse("Property 'key2' should no longer be associated with updated edge",
+//				    updatedEdge.getProperties().containsKey("key2"));
+  }
+
+  @Test
+  public void deleteEdgeTest() throws CrudException {
+
+    boolean deletedEdgeNotFound = false;
+
+    // Create the source vertex for the edge.
+    Vertex sourceVertex = champDao.addVertex("vserver", MapBuilder.builder()
+        .withKeyValue("O/S", "Linux")
+        .withKeyValue("version", "6.5")
+        .withKeyValue("hostname", "kll0001")
+        .build());
+
+    // Create the target vertex for the edge.
+    Vertex destVertex = champDao.addVertex("VNF", MapBuilder.builder()
+        .withKeyValue("O/S", "Linux")
+        .withKeyValue("version", "6.5")
+        .withKeyValue("hostname", "kll0002")
+        .build());
+
+    // Now, create the edge itself.
+    Edge createdEdge = champDao.addEdge("has",
+        sourceVertex,
+        destVertex,
+        MapBuilder.builder()
+            .withKeyValue("key1", "value1")
+            .withKeyValue("key2", "value2")
+            .withKeyValue("key3", "value3")
+            .build());
+
+    // Verify that we can retrieve the edge that we just created.
+    Edge retrievedEdge = champDao.getEdge(createdEdge.getId().get(), "has");
+
+    // Now, delete it.
+    champDao.deleteEdge(createdEdge.getId().get(), "has");
+
+    // Try retrieving it again.  This time we should not find it.
+    try {
+      champDao.getEdge(createdEdge.getId().get(), "has");
+    } catch (CrudException e) {
+
+      assertTrue(e.getMessage().contains("No edge with id"));
+      deletedEdgeNotFound = true;
+    }
+
+    assertTrue("Should not have been able to retrieve deleted edge.", deletedEdgeNotFound);
+  }
+
+  private boolean containsEdge(Edge anEdge, List<Edge> edges) {
+
+    for (Edge e : edges) {
+      if (e.getId().isPresent() && anEdge.getId().isPresent() && (e.getId().get().equals(anEdge.getId().get()))) {
+        return true;
+      }
+
+    }
+    return false;
+  }
+
+  public static class MapBuilder {
+
+    private Map<String, Object> map;
+
+    private MapBuilder() {
+      map = new HashMap<String, Object>();
+    }
+
+    public static MapBuilder builder() {
+      return new MapBuilder();
+    }
+
+    public MapBuilder withKeyValue(String key, Object value) {
+      map.put(key, value);
+      return this;
+    }
+
+    public Map<String, Object> build() {
+      return map;
+    }
+  }
+}
diff --git a/src/test/java/org/openecomp/schema/OxmModelLoaderTest.java b/src/test/java/org/openecomp/schema/OxmModelLoaderTest.java
new file mode 100644
index 0000000..bf4d871
--- /dev/null
+++ b/src/test/java/org/openecomp/schema/OxmModelLoaderTest.java
@@ -0,0 +1,22 @@
+package org.openecomp.schema;
+
+import org.junit.Test;
+import org.openecomp.crud.exception.CrudException;
+
+import static org.junit.Assert.assertTrue;
+
+
+public class OxmModelLoaderTest {
+
+  @Test
+  public void loadModels() {
+    try {
+      OxmModelLoader.loadModels();
+    } catch (CrudException e) {
+      e.printStackTrace();
+      assertTrue(false);
+    }
+
+    assertTrue(OxmModelLoader.getVersionContextMap().size() == 4);
+  }
+}