Add junit coverage to xacml-pdp

Change-Id: I9b59dcd27705e40c424b6a76420e0395adbe44bb
Issue-ID: POLICY-1772
Signed-off-by: Jim Hahn <jrh3@att.com>

6 files changed, 830 insertions, 0 deletions

diff --git a/main/src/test/java/org/onap/policy/pdpx/main/XacmlStateTest.java b/main/src/test/java/org/onap/policy/pdpx/main/XacmlStateTest.java
new file mode 100644
index 00000000..20136bf0
--- /dev/null
+++ b/main/src/test/java/org/onap/policy/pdpx/main/XacmlStateTest.java
@@ -0,0 +1,164 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * Copyright (C) 2019 AT&T Intellectual Property. All rights reserved.
+ * ================================================================================
+ * 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.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.policy.pdpx.main;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.assertTrue;
+import static org.mockito.Mockito.when;
+
+import java.util.Arrays;
+import org.junit.AfterClass;
+import org.junit.Before;
+import org.junit.Test;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+import org.onap.policy.common.utils.network.NetworkUtil;
+import org.onap.policy.models.pdp.concepts.PdpResponseDetails;
+import org.onap.policy.models.pdp.concepts.PdpStateChange;
+import org.onap.policy.models.pdp.concepts.PdpStatus;
+import org.onap.policy.models.pdp.concepts.PdpUpdate;
+import org.onap.policy.models.pdp.enums.PdpHealthStatus;
+import org.onap.policy.models.pdp.enums.PdpResponseStatus;
+import org.onap.policy.models.pdp.enums.PdpState;
+import org.onap.policy.models.tosca.authorative.concepts.ToscaPolicyTypeIdentifier;
+import org.onap.policy.pdpx.main.rest.XacmlPdpApplicationManager;
+import org.onap.policy.pdpx.main.startstop.XacmlPdpActivator;
+
+public class XacmlStateTest {
+    private static final String PDP_TYPE = "xacml";
+    private static final String GROUP = "my-group";
+    private static final String SUBGROUP = "my-subgroup";
+    private static final PdpState STATE = PdpState.SAFE;
+
+    @Mock
+    private XacmlPdpApplicationManager appmgr;
+
+    @Mock
+    private XacmlPdpActivator act;
+
+    private ToscaPolicyTypeIdentifier ident1;
+    private ToscaPolicyTypeIdentifier ident2;
+
+    private String hostName;
+
+    private XacmlState state;
+
+    /**
+     * Initializes objects, including the state.
+     */
+    @Before
+    public void setUp() {
+        MockitoAnnotations.initMocks(this);
+
+        hostName = NetworkUtil.getHostname();
+
+        ident1 = new ToscaPolicyTypeIdentifier("nameA", "typeA");
+        ident2 = new ToscaPolicyTypeIdentifier("nameB", "typeB");
+
+        when(appmgr.getToscaPolicyTypeIdents()).thenReturn(Arrays.asList(ident1, ident2));
+
+        XacmlPdpActivator.setCurrent(act);
+
+        state = new XacmlState(appmgr);
+    }
+
+    @AfterClass
+    public static void tearDownAfterClass() {
+        XacmlPdpActivator.setCurrent(null);
+    }
+
+    @Test
+    public void testShouldHandle() {
+        PdpUpdate msg = new PdpUpdate();
+        assertFalse(state.shouldHandle(msg));
+
+        msg.setName(NetworkUtil.getHostname());
+        assertTrue(state.shouldHandle(msg));
+    }
+
+    @Test
+    public void testGenHeartbeat() {
+        // not healthy
+        PdpStatus status = state.genHeartbeat();
+        assertEquals(PdpHealthStatus.NOT_HEALTHY, status.getHealthy());
+        assertEquals(hostName, status.getName());
+        assertEquals(PDP_TYPE, status.getPdpType());
+        assertEquals(PdpState.PASSIVE, status.getState());
+        assertEquals("[ToscaPolicyTypeIdentifier(name=nameA, version=typeA), "
+                        + "ToscaPolicyTypeIdentifier(name=nameB, version=typeB)]",
+                        status.getSupportedPolicyTypes().toString());
+        assertTrue(status.getPolicies().isEmpty());
+
+        // healthy
+        when(act.isAlive()).thenReturn(true);
+
+        status = state.genHeartbeat();
+        assertEquals(PdpHealthStatus.HEALTHY, status.getHealthy());
+    }
+
+    @Test
+    public void testUpdateInternalStatePdpStateChange() {
+        PdpStateChange req = new PdpStateChange();
+        req.setName(hostName);
+        req.setPdpGroup(GROUP);
+        req.setPdpSubgroup(SUBGROUP);
+        req.setState(STATE);
+
+        PdpStatus status = state.updateInternalState(req);
+        assertEquals(PdpState.SAFE, status.getState());
+
+        PdpResponseDetails resp = status.getResponse();
+        assertNotNull(resp);
+        assertEquals(req.getRequestId(), resp.getResponseTo());
+        assertEquals(PdpResponseStatus.SUCCESS, resp.getResponseStatus());
+
+        // ensure info was saved
+        status = state.genHeartbeat();
+        assertEquals(PdpState.SAFE, status.getState());
+    }
+
+    @Test
+    public void testUpdateInternalStatePdpUpdate() {
+        PdpUpdate req = new PdpUpdate();
+        req.setPdpGroup(GROUP);
+        req.setPdpSubgroup(SUBGROUP);
+
+        PdpStatus status = state.updateInternalState(req);
+
+        PdpResponseDetails resp = status.getResponse();
+        assertNotNull(resp);
+        assertEquals(req.getRequestId(), resp.getResponseTo());
+        assertEquals(PdpResponseStatus.SUCCESS, resp.getResponseStatus());
+
+        // ensure info was saved
+        status = state.genHeartbeat();
+        assertEquals(GROUP, status.getPdpGroup());
+        assertEquals(SUBGROUP, status.getPdpSubgroup());
+    }
+
+    @Test
+    public void testTerminatePdpMessage() {
+        PdpStatus status = state.terminatePdpMessage();
+        assertEquals(PdpState.TERMINATED, status.getState());
+    }
+}
diff --git a/main/src/test/java/org/onap/policy/pdpx/main/comm/XacmlPdpHearbeatPublisherTest.java b/main/src/test/java/org/onap/policy/pdpx/main/comm/XacmlPdpHearbeatPublisherTest.java
new file mode 100644
index 00000000..34bb0fa3
--- /dev/null
+++ b/main/src/test/java/org/onap/policy/pdpx/main/comm/XacmlPdpHearbeatPublisherTest.java
@@ -0,0 +1,185 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * Copyright (C) 2019 AT&T Intellectual Property. All rights reserved.
+ * ================================================================================
+ * 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.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.policy.pdpx.main.comm;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertSame;
+import static org.mockito.Matchers.any;
+import static org.mockito.Matchers.anyLong;
+import static org.mockito.Mockito.never;
+import static org.mockito.Mockito.times;
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
+
+import java.util.Arrays;
+import java.util.LinkedList;
+import java.util.Queue;
+import java.util.Timer;
+import org.junit.Before;
+import org.junit.Test;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+import org.onap.policy.common.endpoints.event.comm.client.TopicSinkClient;
+import org.onap.policy.models.pdp.concepts.PdpStatus;
+import org.onap.policy.pdpx.main.XacmlState;
+
+public class XacmlPdpHearbeatPublisherTest {
+
+    private static final long INTERVAL1 = 1000L;
+    private static final long INTERVAL2 = 2000L;
+    private static final long INTERVAL_INVALID = 0;
+
+    @Mock
+    private TopicSinkClient client;
+
+    @Mock
+    private XacmlState state;
+
+    @Mock
+    private Timer timer1;
+
+    @Mock
+    private Timer timer2;
+
+    @Mock
+    private PdpStatus status;
+
+    private Queue<Timer> timers;
+
+    private XacmlPdpHearbeatPublisher publisher;
+
+
+    /**
+     * Initializes objects, including the publisher.
+     */
+    @Before
+    public void setUp() {
+        MockitoAnnotations.initMocks(this);
+
+        when(state.genHeartbeat()).thenReturn(status);
+
+        timers = new LinkedList<>(Arrays.asList(timer1, timer2));
+
+        publisher = new MyPublisher(client, state);
+    }
+
+    @Test
+    public void testRun() {
+        publisher.run();
+
+        verify(state).genHeartbeat();
+        verify(client).send(status);
+    }
+
+    @Test
+    public void testTerminate() {
+        // not yet started
+        publisher.terminate();
+
+        verify(timer1, never()).cancel();
+        verify(timer2, never()).cancel();
+
+
+        // now start it and then try again
+        publisher.start();
+        publisher.terminate();
+
+        verify(timer1).cancel();
+
+        // timer2 should still be in the queue
+        assertSame(timer2, timers.peek());
+
+
+        // repeat - nothing more should happen
+        publisher.terminate();
+
+        verify(timer1, times(1)).cancel();
+
+        // timer2 should still be in the queue
+        assertSame(timer2, timers.peek());
+    }
+
+    @Test
+    public void testRestart() {
+        // not started yet - should only update the interval
+        publisher.restart(INTERVAL1);
+
+        assertEquals(INTERVAL1, publisher.getIntervalMs());
+        assertSame(timer1, timers.peek());
+
+        // now start it
+        publisher.start();
+        verify(timer1).scheduleAtFixedRate(publisher, 0, INTERVAL1);
+
+        // null interval - no changes
+        publisher.restart(null);
+        verify(timer1, times(1)).scheduleAtFixedRate(any(), anyLong(), anyLong());
+        assertSame(timer2, timers.peek());
+
+        // same interval - no changes
+        publisher.restart(INTERVAL1);
+        verify(timer1, times(1)).scheduleAtFixedRate(any(), anyLong(), anyLong());
+        assertSame(timer2, timers.peek());
+
+        // invalid interval - no changes
+        publisher.restart(INTERVAL_INVALID);
+        verify(timer1, times(1)).scheduleAtFixedRate(any(), anyLong(), anyLong());
+        assertSame(timer2, timers.peek());
+
+        // new interval - old timer should be cancelled and new started
+        publisher.restart(INTERVAL2);
+        verify(timer1).cancel();
+        verify(timer2).scheduleAtFixedRate(publisher, 0, INTERVAL2);
+    }
+
+    @Test
+    public void testStart() {
+        publisher.start();
+
+        verify(timer1).scheduleAtFixedRate(publisher, 0, XacmlPdpHearbeatPublisher.DEFAULT_INTERVAL_MS);
+
+        // repeat - nothing more should happen
+        publisher.start();
+        verify(timer1, times(1)).scheduleAtFixedRate(any(), anyLong(), anyLong());
+        verify(timer1, never()).cancel();
+    }
+
+    @Test
+    public void testMakeTimer() {
+        // create a plain listener to test the "real" makeTimer() method
+        publisher = new XacmlPdpHearbeatPublisher(client, state);
+
+        publisher.start();
+        publisher.terminate();
+    }
+
+    private class MyPublisher extends XacmlPdpHearbeatPublisher {
+
+        public MyPublisher(TopicSinkClient topicSinkClient, XacmlState state) {
+            super(topicSinkClient, state);
+        }
+
+        @Override
+        protected Timer makeTimer() {
+            return timers.remove();
+        }
+    }
+}
diff --git a/main/src/test/java/org/onap/policy/pdpx/main/comm/XacmlPdpPapRegistrationTest.java b/main/src/test/java/org/onap/policy/pdpx/main/comm/XacmlPdpPapRegistrationTest.java
new file mode 100644
index 00000000..c05e0999
--- /dev/null
+++ b/main/src/test/java/org/onap/policy/pdpx/main/comm/XacmlPdpPapRegistrationTest.java
@@ -0,0 +1,71 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * Copyright (C) 2019 AT&T Intellectual Property. All rights reserved.
+ * ================================================================================
+ * 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.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.policy.pdpx.main.comm;
+
+import static org.mockito.Mockito.when;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+import org.onap.policy.common.endpoints.event.comm.client.TopicSinkClient;
+import org.onap.policy.common.endpoints.event.comm.client.TopicSinkClientException;
+import org.onap.policy.models.pdp.concepts.PdpStatus;
+
+public class XacmlPdpPapRegistrationTest {
+
+    @Mock
+    private TopicSinkClient client;
+
+    @Mock
+    private PdpStatus status;
+
+    private XacmlPdpPapRegistration reg;
+
+    /**
+     * Initializes objects, including the registration object.
+     */
+    @Before
+    public void setUp() {
+        MockitoAnnotations.initMocks(this);
+
+        when(client.send(status)).thenReturn(true);
+
+        reg = new XacmlPdpPapRegistration(client);
+    }
+
+    @Test
+    public void testPdpRegistration_SendOk() throws TopicSinkClientException {
+        reg.pdpRegistration(status);
+    }
+
+    @Test
+    public void testPdpRegistration_SendFail() throws TopicSinkClientException {
+        when(client.send(status)).thenReturn(false);
+        reg.pdpRegistration(status);
+    }
+
+    @Test
+    public void testPdpRegistration_SendEx() throws TopicSinkClientException {
+        when(client.send(status)).thenThrow(new IllegalStateException());
+        reg.pdpRegistration(status);
+    }
+}
diff --git a/main/src/test/java/org/onap/policy/pdpx/main/comm/XacmlPdpUpdatePublisherTest.java b/main/src/test/java/org/onap/policy/pdpx/main/comm/XacmlPdpUpdatePublisherTest.java
new file mode 100644
index 00000000..31bec51e
--- /dev/null
+++ b/main/src/test/java/org/onap/policy/pdpx/main/comm/XacmlPdpUpdatePublisherTest.java
@@ -0,0 +1,181 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * Copyright (C) 2019 AT&T Intellectual Property. All rights reserved.
+ * ================================================================================
+ * 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.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.policy.pdpx.main.comm;
+
+import static org.junit.Assert.assertEquals;
+import static org.mockito.Matchers.any;
+import static org.mockito.Mockito.never;
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
+
+import java.util.Arrays;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import org.junit.Before;
+import org.junit.Test;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+import org.onap.policy.common.endpoints.event.comm.client.TopicSinkClient;
+import org.onap.policy.models.pdp.concepts.PdpStatus;
+import org.onap.policy.models.pdp.concepts.PdpUpdate;
+import org.onap.policy.models.tosca.authorative.concepts.ToscaPolicy;
+import org.onap.policy.pdp.xacml.application.common.XacmlApplicationServiceProvider;
+import org.onap.policy.pdpx.main.XacmlState;
+import org.onap.policy.pdpx.main.rest.XacmlPdpApplicationManager;
+import org.onap.policy.pdpx.main.rest.XacmlPdpStatisticsManager;
+
+
+/**
+ * Initializes objects, including the publisher.
+ */
+public class XacmlPdpUpdatePublisherTest {
+
+    private static final int NEW_COUNT = 4;
+
+    @Mock
+    private TopicSinkClient client;
+
+    @Mock
+    private XacmlState state;
+
+    @Mock
+    private PdpStatus status;
+
+    @Mock
+    private XacmlPdpApplicationManager appmgr;
+
+    @Mock
+    private ToscaPolicy deployed1;
+
+    @Mock
+    private ToscaPolicy deployed2;
+
+    @Mock
+    private ToscaPolicy deployed3;
+
+    @Mock
+    private ToscaPolicy deployed4;
+
+    @Mock
+    private ToscaPolicy added1;
+
+    @Mock
+    private ToscaPolicy added2;
+
+    @Mock
+    private PdpUpdate update;
+
+    private XacmlPdpUpdatePublisher publisher;
+
+
+    /**
+     * Initializes objects, including the publisher.
+     */
+    @Before
+    public void setUp() {
+        MockitoAnnotations.initMocks(this);
+
+        Map<ToscaPolicy, XacmlApplicationServiceProvider> deployedPolicies = new HashMap<>();
+        deployedPolicies.put(deployed1, null);
+        deployedPolicies.put(deployed2, null);
+        deployedPolicies.put(deployed3, null);
+        deployedPolicies.put(deployed4, null);
+        when(appmgr.getToscaPolicies()).thenReturn(deployedPolicies);
+
+        // update includes two overlaps
+        List<ToscaPolicy> updatePolicies = Arrays.asList(added1, deployed2, deployed3, added2);
+        when(update.getPolicies()).thenReturn(updatePolicies);
+
+        when(appmgr.getPolicyCount()).thenReturn(NEW_COUNT);
+
+        when(state.updateInternalState(update)).thenReturn(status);
+
+        when(client.send(any())).thenReturn(true);
+
+        publisher = new XacmlPdpUpdatePublisher(client, state, appmgr);
+    }
+
+    @Test
+    public void testHandlePdpUpdate() {
+        XacmlPdpStatisticsManager statmgr = new XacmlPdpStatisticsManager();
+        XacmlPdpStatisticsManager.setCurrent(statmgr);
+
+        publisher.handlePdpUpdate(update);
+
+        // two removed
+        verify(appmgr).removeUndeployedPolicy(deployed1);
+        verify(appmgr).removeUndeployedPolicy(deployed4);
+
+        // two added
+        verify(appmgr).loadDeployedPolicy(added1);
+        verify(appmgr).loadDeployedPolicy(added2);
+
+        // two untouched
+        verify(appmgr, never()).removeUndeployedPolicy(deployed2);
+        verify(appmgr, never()).removeUndeployedPolicy(deployed3);
+        verify(appmgr, never()).loadDeployedPolicy(deployed2);
+        verify(appmgr, never()).loadDeployedPolicy(deployed3);
+
+        assertEquals(NEW_COUNT, statmgr.getTotalPoliciesCount());
+
+        verify(client).send(status);
+    }
+
+    @Test
+    public void testHandlePdpUpdate_NullPolicies() {
+        when(update.getPolicies()).thenReturn(null);
+
+        publisher.handlePdpUpdate(update);
+
+        // all removed
+        verify(appmgr).removeUndeployedPolicy(deployed1);
+        verify(appmgr).removeUndeployedPolicy(deployed2);
+        verify(appmgr).removeUndeployedPolicy(deployed3);
+        verify(appmgr).removeUndeployedPolicy(deployed4);
+
+        // none added
+        verify(appmgr, never()).loadDeployedPolicy(any());
+
+        verify(client).send(status);
+    }
+
+    @Test
+    public void testHandlePdpUpdate_NullStats() {
+        XacmlPdpStatisticsManager.setCurrent(null);
+
+        // should work without throwing an exception
+        publisher.handlePdpUpdate(update);
+
+        verify(client).send(status);
+    }
+
+    @Test
+    public void testHandlePdpUpdate_SendFail() {
+
+        when(client.send(any())).thenReturn(false);
+
+        publisher.handlePdpUpdate(update);
+
+        verify(client).send(status);
+    }
+
+}
diff --git a/main/src/test/java/org/onap/policy/pdpx/main/comm/listeners/XacmlPdpStateChangeListenerTest.java b/main/src/test/java/org/onap/policy/pdpx/main/comm/listeners/XacmlPdpStateChangeListenerTest.java
new file mode 100644
index 00000000..b49f4e29
--- /dev/null
+++ b/main/src/test/java/org/onap/policy/pdpx/main/comm/listeners/XacmlPdpStateChangeListenerTest.java
@@ -0,0 +1,98 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * Copyright (C) 2019 AT&T Intellectual Property. All rights reserved.
+ * ================================================================================
+ * 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.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.policy.pdpx.main.comm.listeners;
+
+import static org.mockito.Matchers.any;
+import static org.mockito.Mockito.never;
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+import org.onap.policy.common.endpoints.event.comm.Topic.CommInfrastructure;
+import org.onap.policy.common.endpoints.event.comm.client.TopicSinkClient;
+import org.onap.policy.models.pdp.concepts.PdpStateChange;
+import org.onap.policy.models.pdp.concepts.PdpStatus;
+import org.onap.policy.pdpx.main.XacmlState;
+import org.onap.policy.pdpx.main.comm.listeners.XacmlPdpStateChangeListener;
+
+public class XacmlPdpStateChangeListenerTest {
+    private static final String TOPIC = "my-topic";
+
+    @Mock
+    private TopicSinkClient client;
+
+    @Mock
+    private XacmlState state;
+
+    @Mock
+    private PdpStatus status;
+
+    @Mock
+    private PdpStateChange change;
+
+    private XacmlPdpStateChangeListener listener;
+
+    /**
+     * Initializes objects, including the listener.
+     */
+    @Before
+    public void setUp() {
+        MockitoAnnotations.initMocks(this);
+
+        listener = new XacmlPdpStateChangeListener(client, state);
+
+        when(state.shouldHandle(change)).thenReturn(true);
+        when(state.updateInternalState(change)).thenReturn(status);
+
+        when(client.send(status)).thenReturn(true);
+    }
+
+    @Test
+    public void testOnTopicEvent_Unhandled() {
+        when(state.shouldHandle(change)).thenReturn(false);
+        listener.onTopicEvent(CommInfrastructure.NOOP, TOPIC, null, change);
+
+        verify(state, never()).updateInternalState(any(PdpStateChange.class));
+        verify(client, never()).send(any());
+    }
+
+    @Test
+    public void testOnTopicEvent_SendFailed() {
+        when(client.send(status)).thenReturn(false);
+
+        listener.onTopicEvent(CommInfrastructure.NOOP, TOPIC, null, change);
+
+        verify(state).updateInternalState(change);
+        verify(client).send(status);
+    }
+
+    @Test
+    public void testOnTopicEvent_SendOk() {
+        listener.onTopicEvent(CommInfrastructure.NOOP, TOPIC, null, change);
+
+        verify(state).updateInternalState(change);
+        verify(client).send(status);
+    }
+
+}
diff --git a/main/src/test/java/org/onap/policy/pdpx/main/comm/listeners/XacmlPdpUpdateListenerTest.java b/main/src/test/java/org/onap/policy/pdpx/main/comm/listeners/XacmlPdpUpdateListenerTest.java
new file mode 100644
index 00000000..73870d05
--- /dev/null
+++ b/main/src/test/java/org/onap/policy/pdpx/main/comm/listeners/XacmlPdpUpdateListenerTest.java
@@ -0,0 +1,131 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * Copyright (C) 2019 AT&T Intellectual Property. All rights reserved.
+ * ================================================================================
+ * 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.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.policy.pdpx.main.comm.listeners;
+
+import static org.junit.Assert.assertNotNull;
+import static org.mockito.Matchers.any;
+import static org.mockito.Matchers.anyLong;
+import static org.mockito.Mockito.doThrow;
+import static org.mockito.Mockito.never;
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+import org.onap.policy.common.endpoints.event.comm.Topic.CommInfrastructure;
+import org.onap.policy.common.endpoints.event.comm.client.TopicSinkClient;
+import org.onap.policy.models.pdp.concepts.PdpUpdate;
+import org.onap.policy.pdpx.main.XacmlState;
+import org.onap.policy.pdpx.main.comm.XacmlPdpHearbeatPublisher;
+import org.onap.policy.pdpx.main.comm.XacmlPdpUpdatePublisher;
+import org.onap.policy.pdpx.main.comm.listeners.XacmlPdpUpdateListener;
+import org.onap.policy.pdpx.main.rest.XacmlPdpApplicationManager;
+import org.powermock.reflect.Whitebox;
+
+public class XacmlPdpUpdateListenerTest {
+    private static final String EXPECTED_EXCEPTION = "expected exception";
+    private static final String TOPIC = "my-topic";
+    private static final long HB_INTERVAL = 100L;
+
+    @Mock
+    private TopicSinkClient client;
+
+    @Mock
+    private XacmlState state;
+
+    @Mock
+    private XacmlPdpHearbeatPublisher heartbeat;
+
+    @Mock
+    private XacmlPdpApplicationManager appmgr;
+
+    @Mock
+    private XacmlPdpUpdatePublisher publisher;
+
+    private PdpUpdate update;
+
+    private XacmlPdpUpdateListener listener;
+
+    /**
+     * Initializes objects, including the listener.
+     */
+    @Before
+    public void setUp() {
+        MockitoAnnotations.initMocks(this);
+
+        listener = new MyListener(client, state, heartbeat, appmgr);
+        update = new PdpUpdate();
+
+        when(state.shouldHandle(update)).thenReturn(true);
+
+        update.setPdpHeartbeatIntervalMs(HB_INTERVAL);
+    }
+
+    @Test
+    public void testOnTopicEvent_Unhandled() {
+        when(state.shouldHandle(update)).thenReturn(false);
+        listener.onTopicEvent(CommInfrastructure.NOOP, TOPIC, null, update);
+
+        verify(publisher, never()).handlePdpUpdate(any());
+        verify(heartbeat, never()).restart(anyLong());
+    }
+
+    @Test
+    public void testOnTopicEvent_SendOk() {
+        listener.onTopicEvent(CommInfrastructure.NOOP, TOPIC, null, update);
+
+        verify(publisher).handlePdpUpdate(update);
+        verify(heartbeat).restart(HB_INTERVAL);
+    }
+
+    @Test
+    public void testOnTopicEvent_SendEx() {
+        doThrow(new RuntimeException(EXPECTED_EXCEPTION)).when(publisher).handlePdpUpdate(update);
+
+        listener.onTopicEvent(CommInfrastructure.NOOP, TOPIC, null, update);
+
+        verify(publisher).handlePdpUpdate(update);
+        verify(heartbeat, never()).restart(anyLong());
+    }
+
+    @Test
+    public void testMakePublisher() {
+        // create a plain listener to test the "real" makePublisher() method
+        listener = new XacmlPdpUpdateListener(client, state, heartbeat, appmgr);
+        assertNotNull(Whitebox.getInternalState(listener, "publisher"));
+    }
+
+    private class MyListener extends XacmlPdpUpdateListener {
+
+        public MyListener(TopicSinkClient client, XacmlState state, XacmlPdpHearbeatPublisher heartbeat,
+                        XacmlPdpApplicationManager appManager) {
+            super(client, state, heartbeat, appManager);
+        }
+
+        @Override
+        protected XacmlPdpUpdatePublisher makePublisher(TopicSinkClient client, XacmlState state,
+                        XacmlPdpApplicationManager appManager) {
+            return publisher;
+        }
+    }
+}