Tests: Refaktorisiert - Serialisierung des Payloads konfigurierbar gemacht

[demos/kafka/training] / src / test / java / de / juplo / kafka / ApplicationTests.java

diff --git a/src/test/java/de/juplo/kafka/ApplicationTests.java b/src/test/java/de/juplo/kafka/ApplicationTests.java
index 61e0a8d..92074ff 100644 (file)
--- a/src/test/java/de/juplo/kafka/ApplicationTests.java
+++ b/src/test/java/de/juplo/kafka/ApplicationTests.java
@@ -6,10 +6,8 @@ import org.apache.kafka.clients.consumer.KafkaConsumer;
 import org.apache.kafka.clients.producer.KafkaProducer;
 import org.apache.kafka.clients.producer.ProducerRecord;
 import org.apache.kafka.common.TopicPartition;
-import org.apache.kafka.common.serialization.BytesDeserializer;
-import org.apache.kafka.common.serialization.BytesSerializer;
-import org.apache.kafka.common.serialization.LongSerializer;
-import org.apache.kafka.common.serialization.StringSerializer;
+import org.apache.kafka.common.errors.RecordDeserializationException;
+import org.apache.kafka.common.serialization.*;
 import org.apache.kafka.common.utils.Bytes;
 import org.junit.jupiter.api.*;
 import org.springframework.beans.factory.annotation.Autowired;
@@ -35,6 +33,8 @@ import static de.juplo.kafka.ApplicationTests.PARTITIONS;
 import static de.juplo.kafka.ApplicationTests.TOPIC;
 import static org.assertj.core.api.Assertions.assertThat;
 import static org.awaitility.Awaitility.*;
+import static org.junit.jupiter.api.Assertions.assertDoesNotThrow;
+import static org.junit.jupiter.api.Assertions.assertThrows;
 
 
 @SpringJUnitConfig(initializers = ConfigDataApplicationContextInitializer.class)
@@ -52,8 +52,9 @@ class ApplicationTests
 
 
        StringSerializer stringSerializer = new StringSerializer();
-       LongSerializer longSerializer = new LongSerializer();
 
+       @Autowired
+       Serializer valueSerializer;
        @Autowired
        KafkaProducer<String, Bytes> kafkaProducer;
        @Autowired
@@ -69,6 +70,7 @@ class ApplicationTests
        EndlessConsumer<String, Long> endlessConsumer;
        Map<TopicPartition, Long> oldOffsets;
        Map<TopicPartition, Long> newOffsets;
+       Set<ConsumerRecord<String, Long>> receivedRecords;
 
 
        /** Tests methods */
@@ -77,16 +79,11 @@ class ApplicationTests
        @Order(1) // << The poistion pill is not skipped. Hence, this test must run first
        void commitsCurrentOffsetsOnSuccess() throws ExecutionException, InterruptedException
        {
-               send100Messages(i ->  new Bytes(longSerializer.serialize(TOPIC, i)));
-
-               Set<ConsumerRecord<String, Long>> received = new HashSet<>();
-               testHandler = record -> received.add(record);
-
-               endlessConsumer.start();
+               send100Messages(i ->  new Bytes(valueSerializer.serialize(TOPIC, i)));
 
                await("100 records received")
                                .atMost(Duration.ofSeconds(30))
-                               .until(() -> received.size() >= 100);
+                               .until(() -> receivedRecords.size() >= 100);
 
                await("Offsets committed")
                                .atMost(Duration.ofSeconds(10))
@@ -95,6 +92,11 @@ class ApplicationTests
                                        checkSeenOffsetsForProgress();
                                        compareToCommitedOffsets(newOffsets);
                                });
+
+               assertThrows(
+                               IllegalStateException.class,
+                               () -> endlessConsumer.exitStatus(),
+                               "Consumer should still be running");
        }
 
        @Test
@@ -104,12 +106,7 @@ class ApplicationTests
                send100Messages(counter ->
                                counter == 77
                                                ? new Bytes(stringSerializer.serialize(TOPIC, "BOOM!"))
-                                               : new Bytes(longSerializer.serialize(TOPIC, counter)));
-
-               Set<ConsumerRecord<String, Long>> received = new HashSet<>();
-               testHandler = record -> received.add(record);
-
-               endlessConsumer.start();
+                                               : new Bytes(valueSerializer.serialize(TOPIC, counter)));
 
                await("Consumer failed")
                                .atMost(Duration.ofSeconds(30))
@@ -125,9 +122,16 @@ class ApplicationTests
 
                checkSeenOffsetsForProgress();
                compareToCommitedOffsets(newOffsets);
-               assertThat(received.size())
+               assertThat(receivedRecords.size())
                                .describedAs("Received not all sent events")
                                .isLessThan(100);
+
+               assertDoesNotThrow(
+                               () -> endlessConsumer.exitStatus(),
+                               "Consumer should not be running");
+               assertThat(endlessConsumer.exitStatus())
+                               .describedAs("Consumer should have exited abnormally")
+                               .containsInstanceOf(RecordDeserializationException.class);
        }
 
 
@@ -233,6 +237,7 @@ class ApplicationTests
 
                oldOffsets = new HashMap<>();
                newOffsets = new HashMap<>();
+               receivedRecords = new HashSet<>();
 
                doForCurrentOffsets((tp, offset) ->
                {
@@ -246,6 +251,7 @@ class ApplicationTests
                                        newOffsets.put(
                                                        new TopicPartition(record.topic(), record.partition()),
                                                        record.offset());
+                                       receivedRecords.add(record);
                                        testHandler.accept(record);
                                };
 
@@ -256,6 +262,8 @@ class ApplicationTests
                                                properties.getTopic(),
                                                kafkaConsumer,
                                                captureOffsetAndExecuteTestHandler);
+
+               endlessConsumer.start();
        }
 
        @AfterEach
@@ -276,6 +284,12 @@ class ApplicationTests
        @Import(ApplicationConfiguration.class)
        public static class Configuration
        {
+               @Bean
+               Serializer<Long> serializer()
+               {
+                       return new LongSerializer();
+               }
+
                @Bean
                KafkaProducer<String, Bytes> kafkaProducer(ApplicationProperties properties)
                {