main/src/test/java/org/onap/policy/pdpx/main/comm/XacmlPdpHearbeatPublisherTest.java

   1 /*-
   2  * ============LICENSE_START=======================================================
   3  * Copyright (C) 2019 AT&T Intellectual Property. All rights reserved.
   4  * ================================================================================
   5  * Licensed under the Apache License, Version 2.0 (the "License");
   6  * you may not use this file except in compliance with the License.
   7  * You may obtain a copy of the License at
   8  *
   9  *      http://www.apache.org/licenses/LICENSE-2.0
  10  *
  11  * Unless required by applicable law or agreed to in writing, software
  12  * distributed under the License is distributed on an "AS IS" BASIS,
  13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  14  * See the License for the specific language governing permissions and
  15  * limitations under the License.
  16  *
  17  * SPDX-License-Identifier: Apache-2.0
  18  * ============LICENSE_END=========================================================
  19  */
  20
  21 package org.onap.policy.pdpx.main.comm;
  22
  23 import static org.junit.Assert.assertEquals;
  24 import static org.junit.Assert.assertSame;
  25 import static org.mockito.Matchers.any;
  26 import static org.mockito.Matchers.anyLong;
  27 import static org.mockito.Mockito.never;
  28 import static org.mockito.Mockito.times;
  29 import static org.mockito.Mockito.verify;
  30 import static org.mockito.Mockito.when;
  31
  32 import java.util.Arrays;
  33 import java.util.LinkedList;
  34 import java.util.Queue;
  35 import java.util.Timer;
  36 import org.junit.Before;
  37 import org.junit.Test;
  38 import org.mockito.Mock;
  39 import org.mockito.MockitoAnnotations;
  40 import org.onap.policy.common.endpoints.event.comm.client.TopicSinkClient;
  41 import org.onap.policy.models.pdp.concepts.PdpStatus;
  42 import org.onap.policy.pdpx.main.XacmlState;
  43
  44 public class XacmlPdpHearbeatPublisherTest {
  45
  46     private static final long INTERVAL1 = 1000L;
  47     private static final long INTERVAL2 = 2000L;
  48     private static final long INTERVAL_INVALID = 0;
  49
  50     @Mock
  51     private TopicSinkClient client;
  52
  53     @Mock
  54     private XacmlState state;
  55
  56     @Mock
  57     private Timer timer1;
  58
  59     @Mock
  60     private Timer timer2;
  61
  62     @Mock
  63     private PdpStatus status;
  64
  65     private Queue<Timer> timers;
  66
  67     private XacmlPdpHearbeatPublisher publisher;
  68
  69
  70     /**
  71      * Initializes objects, including the publisher.
  72      */
  73     @Before
  74     public void setUp() {
  75         MockitoAnnotations.initMocks(this);
  76
  77         when(state.genHeartbeat()).thenReturn(status);
  78
  79         timers = new LinkedList<>(Arrays.asList(timer1, timer2));
  80
  81         publisher = new MyPublisher(client, state);
  82     }
  83
  84     @Test
  85     public void testRun() {
  86         publisher.run();
  87
  88         verify(state).genHeartbeat();
  89         verify(client).send(status);
  90     }
  91
  92     @Test
  93     public void testTerminate() {
  94         // not yet started
  95         publisher.terminate();
  96
  97         verify(timer1, never()).cancel();
  98         verify(timer2, never()).cancel();
  99
 100
 101         // now start it and then try again
 102         publisher.start();
 103         publisher.terminate();
 104
 105         verify(timer1).cancel();
 106
 107         // timer2 should still be in the queue
 108         assertSame(timer2, timers.peek());
 109
 110
 111         // repeat - nothing more should happen
 112         publisher.terminate();
 113
 114         verify(timer1, times(1)).cancel();
 115
 116         // timer2 should still be in the queue
 117         assertSame(timer2, timers.peek());
 118     }
 119
 120     @Test
 121     public void testRestart() {
 122         // not started yet - should only update the interval
 123         publisher.restart(INTERVAL1);
 124
 125         assertEquals(INTERVAL1, publisher.getIntervalMs());
 126         assertSame(timer1, timers.peek());
 127
 128         // now start it
 129         publisher.start();
 130         verify(timer1).scheduleAtFixedRate(publisher, 0, INTERVAL1);
 131
 132         // null interval - no changes
 133         publisher.restart(null);
 134         verify(timer1, times(1)).scheduleAtFixedRate(any(), anyLong(), anyLong());
 135         assertSame(timer2, timers.peek());
 136
 137         // same interval - no changes
 138         publisher.restart(INTERVAL1);
 139         verify(timer1, times(1)).scheduleAtFixedRate(any(), anyLong(), anyLong());
 140         assertSame(timer2, timers.peek());
 141
 142         // invalid interval - no changes
 143         publisher.restart(INTERVAL_INVALID);
 144         verify(timer1, times(1)).scheduleAtFixedRate(any(), anyLong(), anyLong());
 145         assertSame(timer2, timers.peek());
 146
 147         // new interval - old timer should be cancelled and new started
 148         publisher.restart(INTERVAL2);
 149         verify(timer1).cancel();
 150         verify(timer2).scheduleAtFixedRate(publisher, 0, INTERVAL2);
 151     }
 152
 153     @Test
 154     public void testStart() {
 155         publisher.start();
 156
 157         verify(timer1).scheduleAtFixedRate(publisher, 0, XacmlPdpHearbeatPublisher.DEFAULT_INTERVAL_MS);
 158
 159         // repeat - nothing more should happen
 160         publisher.start();
 161         verify(timer1, times(1)).scheduleAtFixedRate(any(), anyLong(), anyLong());
 162         verify(timer1, never()).cancel();
 163     }
 164
 165     @Test
 166     public void testMakeTimer() {
 167         // create a plain listener to test the "real" makeTimer() method
 168         publisher = new XacmlPdpHearbeatPublisher(client, state);
 169
 170         publisher.start();
 171         publisher.terminate();
 172     }
 173
 174     private class MyPublisher extends XacmlPdpHearbeatPublisher {
 175
 176         public MyPublisher(TopicSinkClient topicSinkClient, XacmlState state) {
 177             super(topicSinkClient, state);
 178         }
 179
 180         @Override
 181         protected Timer makeTimer() {
 182             return timers.remove();
 183         }
 184     }
 185 }