44dfb314c1
* GH-210: Upgrade test-embedded-kafka to JUnit5 Resolves https://github.com/spring-cloud/spring-cloud-stream-samples/issues/210 * Avoid a rebalance by using a different group in the test; use `assign()` instead of `subscribe()`.
101 lines
4.1 KiB
Java
101 lines
4.1 KiB
Java
/*
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* Copyright 2017-2018 the original author or authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* https://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/*
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* Copyright 2017-2018 the original author or authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* https://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package demo;
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import org.apache.kafka.clients.consumer.Consumer;
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import org.apache.kafka.clients.consumer.ConsumerConfig;
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import org.apache.kafka.clients.consumer.ConsumerRecords;
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import org.apache.kafka.common.TopicPartition;
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import org.apache.kafka.common.serialization.ByteArrayDeserializer;
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import org.apache.kafka.common.serialization.ByteArraySerializer;
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import org.junit.jupiter.api.Test;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.boot.test.context.SpringBootTest;
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import org.springframework.kafka.core.DefaultKafkaConsumerFactory;
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import org.springframework.kafka.core.DefaultKafkaProducerFactory;
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import org.springframework.kafka.core.KafkaTemplate;
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import org.springframework.kafka.test.EmbeddedKafkaBroker;
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import org.springframework.kafka.test.context.EmbeddedKafka;
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import org.springframework.kafka.test.utils.KafkaTestUtils;
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import java.time.Duration;
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import java.util.Collections;
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import java.util.Map;
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import static org.assertj.core.api.Assertions.assertThat;
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/**
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* Test class demonstrating how to use an embedded kafka service with the
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* kafka binder.
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*
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* @author Gary Russell
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* @author Soby Chacko
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*
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*/
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@SpringBootTest
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@EmbeddedKafka(topics = { EmbeddedKafkaApplicationTests.INPUT_TOPIC, EmbeddedKafkaApplicationTests.OUTPUT_TOPIC },
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partitions = 1,
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bootstrapServersProperty = "spring.kafka.bootstrap-servers")
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public class EmbeddedKafkaApplicationTests {
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public static final String INPUT_TOPIC = "testEmbeddedIn";
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public static final String OUTPUT_TOPIC = "testEmbeddedOut";
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private static final String GROUP_NAME = "embeddedKafkaApplicationTest";
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@Test
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void testSendReceive(@Autowired EmbeddedKafkaBroker embeddedKafka) {
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Map<String, Object> senderProps = KafkaTestUtils.producerProps(embeddedKafka);
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senderProps.put("key.serializer", ByteArraySerializer.class);
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senderProps.put("value.serializer", ByteArraySerializer.class);
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DefaultKafkaProducerFactory<byte[], byte[]> pf = new DefaultKafkaProducerFactory<>(senderProps);
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KafkaTemplate<byte[], byte[]> template = new KafkaTemplate<>(pf, true);
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template.setDefaultTopic(INPUT_TOPIC);
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template.sendDefault("foo".getBytes());
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Map<String, Object> consumerProps = KafkaTestUtils.consumerProps(GROUP_NAME, "false", embeddedKafka);
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consumerProps.put(ConsumerConfig.AUTO_OFFSET_RESET_CONFIG, "earliest");
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consumerProps.put("key.deserializer", ByteArrayDeserializer.class);
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consumerProps.put("value.deserializer", ByteArrayDeserializer.class);
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DefaultKafkaConsumerFactory<byte[], byte[]> cf = new DefaultKafkaConsumerFactory<>(consumerProps);
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Consumer<byte[], byte[]> consumer = cf.createConsumer();
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consumer.assign(Collections.singleton(new TopicPartition(OUTPUT_TOPIC, 0)));
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ConsumerRecords<byte[], byte[]> records = consumer.poll(Duration.ofSeconds(10));
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consumer.commitSync();
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assertThat(records.count()).isEqualTo(1);
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assertThat(new String(records.iterator().next().value())).isEqualTo("FOO");
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}
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}
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