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/*-
* ============LICENSE_START=======================================================
* ONAP PAP
* ================================================================================
* Copyright (C) 2019-2020 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.
* ============LICENSE_END=========================================================
*/
package org.onap.policy.pap.main.comm;
import static org.assertj.core.api.Assertions.assertThatThrownBy;
import static org.junit.Assert.assertNotNull;
import static org.mockito.Matchers.any;
import static org.mockito.Matchers.eq;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.never;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.when;
import java.util.Collections;
import java.util.List;
import java.util.function.Consumer;
import org.junit.Before;
import org.junit.Test;
import org.mockito.ArgumentCaptor;
import org.mockito.Captor;
import org.mockito.Mock;
import org.mockito.MockitoAnnotations;
import org.onap.policy.common.utils.coder.StandardCoder;
import org.onap.policy.common.utils.resources.ResourceUtils;
import org.onap.policy.models.base.PfModelException;
import org.onap.policy.models.pdp.concepts.PdpGroup;
import org.onap.policy.models.pdp.concepts.PdpGroups;
import org.onap.policy.models.provider.PolicyModelsProvider;
import org.onap.policy.pap.main.PolicyModelsProviderFactoryWrapper;
import org.onap.policy.pap.main.PolicyPapRuntimeException;
import org.onap.policy.pap.main.comm.TimerManager.Timer;
public class PdpTrackerTest {
private static final String PDP1 = "pdp1";
private static final String PDP2 = "pdp2";
private PdpTracker tracker;
private PdpTracker.PdpTrackerBuilder builder;
private Object modifyLock;
@Captor
private ArgumentCaptor<Consumer<String>> handlerCaptor;
@Mock
private PdpModifyRequestMap requestMap;
@Mock
private TimerManager timers;
@Mock
private PolicyModelsProviderFactoryWrapper daoFactory;
@Mock
private PolicyModelsProvider dao;
@Mock
private Timer timer1;
@Mock
private Timer timer2;
/**
* Sets up.
*
* @throws Exception if an error occurs
*/
@Before
public void setUp() throws Exception {
MockitoAnnotations.initMocks(this);
modifyLock = new Object();
builder = PdpTracker.builder().daoFactory(daoFactory).modifyLock(modifyLock).requestMap(requestMap)
.timers(timers);
when(daoFactory.create()).thenReturn(dao);
when(dao.getPdpGroups(null)).thenReturn(Collections.emptyList());
when(timers.register(eq(PDP1), any())).thenReturn(timer1);
when(timers.register(eq(PDP2), any())).thenReturn(timer2);
tracker = builder.build();
}
@Test
public void testPdpTracker() throws Exception {
// verify that PDPs were loaded
verify(dao).getPdpGroups(null);
}
@Test
public void testBuilderToString() throws Exception {
assertNotNull(builder.toString());
}
@Test
public void testPdpTracker_MissingRequestMap() throws Exception {
assertThatThrownBy(() -> builder.requestMap(null)).isInstanceOf(NullPointerException.class);
}
@Test
public void testPdpTracker_MissingModifyLock() throws Exception {
assertThatThrownBy(() -> builder.modifyLock(null)).isInstanceOf(NullPointerException.class);
}
@Test
public void testPdpTracker_MissingTimers() throws Exception {
assertThatThrownBy(() -> builder.timers(null)).isInstanceOf(NullPointerException.class);
}
@Test
public void testPdpTracker_MissingDaoFactory() throws Exception {
assertThatThrownBy(() -> builder.daoFactory(null)).isInstanceOf(NullPointerException.class);
}
@Test
public void testLoadPdps_testLoadPdpsFromGroup() throws Exception {
// arrange for DAO to return a couple of groups
String groupsJson = ResourceUtils.getResourceAsString("comm/PdpTracker.json");
List<PdpGroup> groups = new StandardCoder().decode(groupsJson, PdpGroups.class).getGroups();
when(dao.getPdpGroups(null)).thenReturn(groups);
tracker = builder.build();
// verify that all PDPs were registered
verify(timers).register(eq("pdp-A"), any());
verify(timers).register(eq("pdp-B"), any());
verify(timers).register(eq("pdp-C"), any());
verify(timers).register(eq("pdp-D"), any());
}
@Test
public void testLoadPdps_DaoException() throws Exception {
// arrange for DAO to throw an exception
PfModelException ex = mock(PfModelException.class);
when(daoFactory.create()).thenThrow(ex);
assertThatThrownBy(() -> builder.build()).isInstanceOf(PolicyPapRuntimeException.class).hasCause(ex);
}
@Test
public void testAdd() {
tracker.add(PDP1);
verify(timers).register(eq(PDP1), any());
verify(timer1, never()).cancel();
tracker.add(PDP2);
verify(timers).register(eq(PDP2), any());
verify(timer1, never()).cancel();
verify(timer2, never()).cancel();
// re-add PDP1 - old timer should be canceled and a new timer added
Timer timer3 = mock(Timer.class);
when(timers.register(eq(PDP1), any())).thenReturn(timer3);
tracker.add(PDP1);
verify(timer1).cancel();
verify(timer2, never()).cancel();
verify(timer3, never()).cancel();
}
@Test
public void testHandleTimeout() throws Exception {
tracker.add(PDP1);
tracker.add(PDP2);
verify(timers).register(eq(PDP1), handlerCaptor.capture());
handlerCaptor.getValue().accept(PDP1);
verify(requestMap).removeFromGroups(PDP1);
// now we'll re-add PDP1 - the original timer should not be canceled
Timer timer3 = mock(Timer.class);
when(timers.register(eq(PDP1), any())).thenReturn(timer3);
tracker.add(PDP1);
verify(timer1, never()).cancel();
}
@Test
public void testHandleTimeout_MapException() throws Exception {
tracker.add(PDP1);
verify(timers).register(eq(PDP1), handlerCaptor.capture());
// arrange for request map to throw an exception
PfModelException ex = mock(PfModelException.class);
when(requestMap.removeFromGroups(PDP1)).thenThrow(ex);
// exception should be caught, but not re-thrown
handlerCaptor.getValue().accept(PDP1);
}
}
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