Add test for addNode

git-svn-id: https://svn.apache.org/repos/asf/maven/shared/trunk@568211 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/src/test/java/org/apache/maven/shared/dependency/tree/DependencyTreeResolutionListenerTest.java b/src/test/java/org/apache/maven/shared/dependency/tree/DependencyTreeResolutionListenerTest.java
index e1a7194..4debf8c 100644
--- a/src/test/java/org/apache/maven/shared/dependency/tree/DependencyTreeResolutionListenerTest.java
+++ b/src/test/java/org/apache/maven/shared/dependency/tree/DependencyTreeResolutionListenerTest.java
@@ -382,6 +382,16 @@
         assertEquals( projectArtifactNode, listener.getRootNode() );
     }
 
+    public void testAddNode()
+    {
+        Artifact a1 = createArtifact( "test-project", "project-artifact", "1.0" );
+        listener.addNode( a1 );
+        listener.startProcessChildren( a1 );
+        Artifact a2 = createArtifact( "test-project", "project-artifact", "1.1" );
+        listener.addNode( a2 );
+        assertEquals( 1, listener.getRootNode().getChildren().size() );
+    }
+
     // protected methods ------------------------------------------------------
 
     /*