diff --git a/core/api/src/test/java/org/onosproject/net/topology/LinkWeigherAdapter.java b/core/api/src/test/java/org/onosproject/net/topology/LinkWeigherAdapter.java
new file mode 100644
index 0000000..bf3f934
--- /dev/null
+++ b/core/api/src/test/java/org/onosproject/net/topology/LinkWeigherAdapter.java
@@ -0,0 +1,42 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * 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.
+ */
+
+package org.onosproject.net.topology;
+
+import org.onlab.graph.ScalarWeight;
+import org.onlab.graph.Weight;
+
+public class LinkWeigherAdapter implements LinkWeigher {
+    final double weight;
+
+    public LinkWeigherAdapter(Double weight) {
+        this.weight = weight;
+    }
+    @Override
+    public Weight weight(TopologyEdge edge) {
+        return ScalarWeight.toWeight(weight);
+    }
+
+    @Override
+    public Weight getInitialWeight() {
+        return ScalarWeight.toWeight(0.0);
+    }
+
+    @Override
+    public Weight getNonViableWeight() {
+        return ScalarWeight.toWeight(0.0);
+    }
+}