apm-sniffer/apm-sdk-plugin/kafka-plugin/src/test/java/org/apache/skywalking/apm/plugin/kafka/SubscribeMethodInterceptorTest.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.
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package org.apache.skywalking.apm.plugin.kafka;

import org.apache.skywalking.apm.agent.core.plugin.interceptor.enhance.EnhancedInstance;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.mockito.Mock;
import org.mockito.runners.MockitoJUnitRunner;

import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import java.util.regex.Pattern;

import static org.hamcrest.MatcherAssert.assertThat;
import static org.hamcrest.core.Is.is;

@RunWith(MockitoJUnitRunner.class)
public class SubscribeMethodInterceptorTest {

    @Mock
    private SubscribeMethodInterceptor constructorInterceptor;

    private List<String> mockTopics = new ArrayList<>();

    private Pattern mockTopicPattern = Pattern.compile("test-.*");

    private EnhancedInstance enhancedInstance = new EnhancedInstance() {
        ConsumerEnhanceRequiredInfo consumerEnhanceRequiredInfo = new ConsumerEnhanceRequiredInfo();

        @Override
        public Object getSkyWalkingDynamicField() {
            return consumerEnhanceRequiredInfo;
        }

        @Override
        public void setSkyWalkingDynamicField(Object value) {
            this.consumerEnhanceRequiredInfo = (ConsumerEnhanceRequiredInfo) value;
        }
    };

    @Before
    public void setUp() {
        mockTopics.add("test");
        mockTopics.add("test-1");
        constructorInterceptor = new SubscribeMethodInterceptor();
    }

    @Test
    public void testOnConsumer() {
        constructorInterceptor.beforeMethod(enhancedInstance, null, new Object[] {mockTopics}, new Class[] {Collection.class}, null);
        ConsumerEnhanceRequiredInfo requiredInfo = (ConsumerEnhanceRequiredInfo) enhancedInstance.getSkyWalkingDynamicField();
        assertThat(requiredInfo.getTopics(), is("test;test-1"));
    }

    @Test
    public void testSubscribeForPattern() {
        constructorInterceptor.beforeMethod(enhancedInstance, null, new Object[] {mockTopicPattern}, new Class[] {Pattern.class}, null);
        ConsumerEnhanceRequiredInfo requiredInfo = (ConsumerEnhanceRequiredInfo) enhancedInstance.getSkyWalkingDynamicField();
        assertThat(requiredInfo.getTopics(), is("test-.*"));
    }
}