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);
+    }
+}
diff --git a/core/api/src/test/java/org/onosproject/net/topology/PathServiceAdapter.java b/core/api/src/test/java/org/onosproject/net/topology/PathServiceAdapter.java
index 1e18030..86a9405 100644
--- a/core/api/src/test/java/org/onosproject/net/topology/PathServiceAdapter.java
+++ b/core/api/src/test/java/org/onosproject/net/topology/PathServiceAdapter.java
@@ -33,11 +33,6 @@
     }
 
     @Override
-    public Set<Path> getPaths(ElementId src, ElementId dst, LinkWeight weight) {
-        return null;
-    }
-
-    @Override
     public Set<Path> getPaths(ElementId src, ElementId dst,
                               LinkWeigher weigher) {
         return null;
@@ -50,12 +45,6 @@
 
     @Override
     public Set<DisjointPath> getDisjointPaths(ElementId src, ElementId dst,
-                                              LinkWeight weight) {
-        return null;
-    }
-
-    @Override
-    public Set<DisjointPath> getDisjointPaths(ElementId src, ElementId dst,
                                               LinkWeigher weigher) {
         return null;
     }
@@ -68,13 +57,6 @@
 
     @Override
     public Set<DisjointPath> getDisjointPaths(ElementId src, ElementId dst,
-                                              LinkWeight weight,
-                                              Map<Link, Object> riskProfile) {
-        return null;
-    }
-
-    @Override
-    public Set<DisjointPath> getDisjointPaths(ElementId src, ElementId dst,
                                               LinkWeigher weigher,
                                               Map<Link, Object> riskProfile) {
         return null;
diff --git a/core/api/src/test/java/org/onosproject/net/topology/TopologyServiceAdapter.java b/core/api/src/test/java/org/onosproject/net/topology/TopologyServiceAdapter.java
index a3266fb..b75dbb0 100644
--- a/core/api/src/test/java/org/onosproject/net/topology/TopologyServiceAdapter.java
+++ b/core/api/src/test/java/org/onosproject/net/topology/TopologyServiceAdapter.java
@@ -72,12 +72,6 @@
 
     @Override
     public Set<Path> getPaths(Topology topology, DeviceId src, DeviceId dst,
-                              LinkWeight weight) {
-        return null;
-    }
-
-    @Override
-    public Set<Path> getPaths(Topology topology, DeviceId src, DeviceId dst,
                               LinkWeigher weigher) {
         return null;
     }
@@ -111,13 +105,6 @@
     @Override
     public Set<DisjointPath> getDisjointPaths(Topology topology, DeviceId src,
                                               DeviceId dst,
-                                              LinkWeight weight) {
-        return null;
-    }
-
-    @Override
-    public Set<DisjointPath> getDisjointPaths(Topology topology, DeviceId src,
-                                              DeviceId dst,
                                               LinkWeigher weigher) {
         return null;
     }
@@ -131,13 +118,6 @@
 
     @Override
     public Set<DisjointPath> getDisjointPaths(Topology topology, DeviceId src,
-                                              DeviceId dst, LinkWeight weight,
-                                              Map<Link, Object> riskProfile) {
-        return null;
-    }
-
-    @Override
-    public Set<DisjointPath> getDisjointPaths(Topology topology, DeviceId src,
                                               DeviceId dst,
                                               LinkWeigher weigher,
                                               Map<Link, Object> riskProfile) {