diff --git a/core/api/src/test/java/org/onosproject/core/CoreServiceAdapter.java b/core/api/src/test/java/org/onosproject/core/CoreServiceAdapter.java
new file mode 100644
index 0000000..cd9db3f
--- /dev/null
+++ b/core/api/src/test/java/org/onosproject/core/CoreServiceAdapter.java
@@ -0,0 +1,49 @@
+/*
+ * Copyright 2015 Open Networking Laboratory
+ *
+ * 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.core;
+
+import java.util.Set;
+
+/**
+ * Test adapter for core service.
+ */
+public class CoreServiceAdapter implements CoreService {
+    @Override
+    public Version version() {
+        return null;
+    }
+
+    @Override
+    public Set<ApplicationId> getAppIds() {
+        return null;
+    }
+
+    @Override
+    public ApplicationId getAppId(Short id) {
+        return null;
+    }
+
+    @Override
+    public ApplicationId registerApplication(String identifier) {
+        return null;
+    }
+
+    @Override
+    public IdGenerator getIdGenerator(String topic) {
+        return null;
+    }
+}
diff --git a/core/api/src/test/java/org/onosproject/net/device/DeviceServiceAdapter.java b/core/api/src/test/java/org/onosproject/net/device/DeviceServiceAdapter.java
index b05f17d..ccd4a6d 100644
--- a/core/api/src/test/java/org/onosproject/net/device/DeviceServiceAdapter.java
+++ b/core/api/src/test/java/org/onosproject/net/device/DeviceServiceAdapter.java
@@ -15,15 +15,14 @@
  */
 package org.onosproject.net.device;
 
+import com.google.common.base.Predicate;
+import com.google.common.collect.FluentIterable;
 import org.onosproject.net.Device;
 import org.onosproject.net.DeviceId;
 import org.onosproject.net.MastershipRole;
 import org.onosproject.net.Port;
 import org.onosproject.net.PortNumber;
 
-import com.google.common.base.Predicate;
-import com.google.common.collect.FluentIterable;
-
 import java.util.List;
 
 /**
diff --git a/core/api/src/test/java/org/onosproject/net/flow/FlowRuleServiceAdapter.java b/core/api/src/test/java/org/onosproject/net/flow/FlowRuleServiceAdapter.java
new file mode 100644
index 0000000..8f54e85
--- /dev/null
+++ b/core/api/src/test/java/org/onosproject/net/flow/FlowRuleServiceAdapter.java
@@ -0,0 +1,77 @@
+/*
+ * Copyright 2015 Open Networking Laboratory
+ *
+ * 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.flow;
+
+import org.onosproject.core.ApplicationId;
+import org.onosproject.net.DeviceId;
+
+import java.util.concurrent.Future;
+
+/**
+ * Test adapter for flow rule service.
+ */
+public class FlowRuleServiceAdapter implements FlowRuleService {
+    @Override
+    public int getFlowRuleCount() {
+        return 0;
+    }
+
+    @Override
+    public Iterable<FlowEntry> getFlowEntries(DeviceId deviceId) {
+        return null;
+    }
+
+    @Override
+    public void applyFlowRules(FlowRule... flowRules) {
+
+    }
+
+    @Override
+    public void removeFlowRules(FlowRule... flowRules) {
+
+    }
+
+    @Override
+    public void removeFlowRulesById(ApplicationId appId) {
+
+    }
+
+    @Override
+    public Iterable<FlowRule> getFlowRulesById(ApplicationId id) {
+        return null;
+    }
+
+    @Override
+    public Iterable<FlowRule> getFlowRulesByGroupId(ApplicationId appId, short groupId) {
+        return null;
+    }
+
+    @Override
+    public Future<CompletedBatchOperation> applyBatch(FlowRuleBatchOperation batch) {
+        return null;
+    }
+
+    @Override
+    public void addListener(FlowRuleListener listener) {
+
+    }
+
+    @Override
+    public void removeListener(FlowRuleListener listener) {
+
+    }
+}
diff --git a/core/api/src/test/java/org/onosproject/net/intent/IntentServiceAdapter.java b/core/api/src/test/java/org/onosproject/net/intent/IntentServiceAdapter.java
new file mode 100644
index 0000000..335d9f1
--- /dev/null
+++ b/core/api/src/test/java/org/onosproject/net/intent/IntentServiceAdapter.java
@@ -0,0 +1,79 @@
+/*
+ * Copyright 2015 Open Networking Laboratory
+ *
+ * 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.intent;
+
+import java.util.List;
+
+/**
+ *  Test adapter for intent service.
+ */
+public class IntentServiceAdapter implements IntentService {
+    @Override
+    public void submit(Intent intent) {
+
+    }
+
+    @Override
+    public void withdraw(Intent intent) {
+
+    }
+
+    @Override
+    public void replace(IntentId oldIntentId, Intent newIntent) {
+
+    }
+
+    @Override
+    public void execute(IntentOperations operations) {
+
+    }
+
+    @Override
+    public Iterable<Intent> getIntents() {
+        return null;
+    }
+
+    @Override
+    public long getIntentCount() {
+        return 0;
+    }
+
+    @Override
+    public Intent getIntent(IntentId id) {
+        return null;
+    }
+
+    @Override
+    public IntentState getIntentState(IntentId id) {
+        return null;
+    }
+
+    @Override
+    public List<Intent> getInstallableIntents(IntentId intentId) {
+        return null;
+    }
+
+    @Override
+    public void addListener(IntentListener listener) {
+
+    }
+
+    @Override
+    public void removeListener(IntentListener listener) {
+
+    }
+}
diff --git a/core/api/src/test/java/org/onosproject/net/statistic/StatisticServiceAdapter.java b/core/api/src/test/java/org/onosproject/net/statistic/StatisticServiceAdapter.java
new file mode 100644
index 0000000..cf8f36f
--- /dev/null
+++ b/core/api/src/test/java/org/onosproject/net/statistic/StatisticServiceAdapter.java
@@ -0,0 +1,61 @@
+/*
+ * Copyright 2015 Open Networking Laboratory
+ *
+ * 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.statistic;
+
+import org.onosproject.core.ApplicationId;
+import org.onosproject.core.GroupId;
+import org.onosproject.net.ConnectPoint;
+import org.onosproject.net.Link;
+import org.onosproject.net.Path;
+import org.onosproject.net.flow.FlowRule;
+
+import java.util.Optional;
+
+/**
+ * Test adapter for statistics service.
+ */
+public class StatisticServiceAdapter implements StatisticService {
+    @Override
+    public Load load(Link link) {
+        return null;
+    }
+
+    @Override
+    public Load load(ConnectPoint connectPoint) {
+        return null;
+    }
+
+    @Override
+    public Link max(Path path) {
+        return null;
+    }
+
+    @Override
+    public Link min(Path path) {
+        return null;
+    }
+
+    @Override
+    public FlowRule highestHitter(ConnectPoint connectPoint) {
+        return null;
+    }
+
+    @Override
+    public Load load(Link link, ApplicationId appId, Optional<GroupId> groupId) {
+        return null;
+    }
+}