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/*-
* ============LICENSE_START=======================================================
* ONAP Policy Models
* ================================================================================
* Copyright (C) 2019-2020 AT&T Intellectual Property. All rights reserved.
* Modifications Copyright (C) 2023 Nordix 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.
* ============LICENSE_END=========================================================
*/
package org.onap.policy.models.sim.dmaap.provider;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.assertSame;
import static org.junit.Assert.assertTrue;
import static org.mockito.ArgumentMatchers.any;
import static org.mockito.ArgumentMatchers.anyInt;
import static org.mockito.ArgumentMatchers.anyLong;
import static org.mockito.Mockito.mock;
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.Collections;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import java.util.TreeMap;
import java.util.TreeSet;
import java.util.stream.Collectors;
import org.junit.Before;
import org.junit.Test;
import org.onap.policy.common.utils.coder.Coder;
import org.onap.policy.common.utils.coder.CoderException;
import org.onap.policy.common.utils.coder.StandardCoder;
import org.springframework.test.util.ReflectionTestUtils;
public class TopicDataTest {
private static final String EXPECTED_EXCEPTION = "expected exception";
private static final String GROUP1 = "group-A";
private static final String GROUP2 = "group-B";
private static final String GROUP3 = "group-C";
private TopicData data;
private ConsumerGroupData consgrp1;
private ConsumerGroupData consgrp2;
private ConsumerGroupData consgrp3;
private List<ConsumerGroupData> groups;
/**
* Sets up mocks and the initial data object.
*
* @throws Exception if an error occurs
*/
@Before
public void setUp() throws Exception {
consgrp1 = mock(ConsumerGroupData.class);
consgrp2 = mock(ConsumerGroupData.class);
consgrp3 = mock(ConsumerGroupData.class);
when(consgrp1.read(anyInt(), anyLong())).thenReturn(Collections.emptyList());
when(consgrp2.read(anyInt(), anyLong())).thenReturn(Collections.emptyList());
when(consgrp3.read(anyInt(), anyLong())).thenReturn(Collections.emptyList());
groups = new LinkedList<>(Arrays.asList(consgrp1, consgrp2, consgrp3));
data = new TopicData("my-topic") {
@Override
protected ConsumerGroupData makeData(String consumerGroup) {
return groups.remove(0);
}
};
}
@Test
public void testRemoveIdleConsumers() throws Exception {
// force two consumers into the map
data.read(GROUP1, 0, 0);
data.read(GROUP2, 0, 0);
data.read(GROUP3, 0, 0);
// indicate that one should be removed
when(consgrp1.shouldRemove()).thenReturn(true);
// sweep
data.removeIdleConsumers();
assertEquals("[group-B, group-C]", new TreeSet<>(getGroups().keySet()).toString());
// indicate that the others should be removed
when(consgrp2.shouldRemove()).thenReturn(true);
when(consgrp3.shouldRemove()).thenReturn(true);
// sweep
data.removeIdleConsumers();
assertTrue(getGroups().isEmpty());
}
@Test
public void testRead() throws Exception {
List<String> lst = Collections.emptyList();
when(consgrp1.read(anyInt(), anyLong())).thenReturn(ConsumerGroupData.UNREADABLE_LIST)
.thenReturn(ConsumerGroupData.UNREADABLE_LIST).thenReturn(lst);
assertSame(lst, data.read(GROUP1, 10, 20));
// should have invoked three times
verify(consgrp1, times(3)).read(anyInt(), anyLong());
// should have used the given values
verify(consgrp1, times(3)).read(10, 20);
// should not have allocated more than one group
assertEquals(2, groups.size());
}
@Test
public void testRead_MultipleGroups() throws Exception {
List<String> lst1 = Collections.emptyList();
when(consgrp1.read(anyInt(), anyLong())).thenReturn(lst1);
List<String> lst2 = Collections.emptyList();
when(consgrp2.read(anyInt(), anyLong())).thenReturn(lst2);
// one from each group
assertSame(lst1, data.read(GROUP1, 0, 0));
assertSame(lst2, data.read(GROUP2, 0, 0));
// repeat
assertSame(lst1, data.read(GROUP1, 0, 0));
assertSame(lst2, data.read(GROUP2, 0, 0));
// again
assertSame(lst1, data.read(GROUP1, 0, 0));
assertSame(lst2, data.read(GROUP2, 0, 0));
// should still have group3 in the list
assertEquals(1, groups.size());
}
@Test
public void testWrite() throws Exception {
// no groups yet
List<Object> messages = Arrays.asList("hello", "world");
data.write(messages);
// add two groups
data.read(GROUP1, 0, 0);
data.read(GROUP2, 0, 0);
data.write(messages);
// should have been written to both groups
List<String> strings = messages.stream().map(Object::toString).collect(Collectors.toList());
verify(consgrp1).write(strings);
verify(consgrp2).write(strings);
}
@Test
public void testConvertMessagesToStrings() {
assertEquals("[abc, 200]", data.convertMessagesToStrings(Arrays.asList("abc", null, 200)).toString());
}
@Test
public void testConvertMessageToString() throws CoderException {
Coder coder = new StandardCoder();
assertNull(data.convertMessageToString(null, coder));
assertEquals("text-msg", data.convertMessageToString("text-msg", coder));
assertEquals("100", data.convertMessageToString(100, coder));
coder = mock(Coder.class);
when(coder.encode(any())).thenThrow(new CoderException(EXPECTED_EXCEPTION));
assertNull(data.convertMessageToString(new TreeMap<String, Object>(), coder));
}
@Test
public void testMakeData() throws Exception {
// use real objects instead of mocks
TopicData data2 = new TopicData("real-data-topic");
// force a group into the topic
data2.read(GROUP1, 0, 0);
data2.write(Arrays.asList("abc", "def", "ghi"));
assertEquals("[abc, def]", data2.read(GROUP1, 2, 0).toString());
}
/**
* Gets the consumer group map from the topic data object.
*
* @return the topic's consumer group map
*/
@SuppressWarnings("unchecked")
private Map<String, ConsumerGroupData> getGroups() {
return (Map<String, ConsumerGroupData>) ReflectionTestUtils.getField(data, "group2data");
}
}
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