package de.juplo.kafka.wordcount.counter;
-import org.apache.kafka.common.serialization.StringDeserializer;
-import org.apache.kafka.common.serialization.StringSerializer;
-import org.apache.kafka.streams.TestInputTopic;
-import org.apache.kafka.streams.TestOutputTopic;
-import org.apache.kafka.streams.Topology;
-import org.apache.kafka.streams.TopologyTestDriver;
+import lombok.extern.slf4j.Slf4j;
+import org.apache.kafka.streams.*;
import org.apache.kafka.streams.state.Stores;
import org.junit.jupiter.api.Test;
+import org.springframework.kafka.support.serializer.JsonDeserializer;
+import org.springframework.kafka.support.serializer.JsonSerde;
import org.springframework.kafka.support.serializer.JsonSerializer;
import java.util.List;
+import java.util.Map;
import java.util.Properties;
+import static de.juplo.kafka.wordcount.counter.TestData.convertToMap;
+import static de.juplo.kafka.wordcount.counter.TestData.parseHeader;
+import static org.springframework.kafka.support.mapping.AbstractJavaTypeMapper.DEFAULT_CLASSID_FIELD_NAME;
+import static org.springframework.kafka.support.mapping.AbstractJavaTypeMapper.KEY_DEFAULT_CLASSID_FIELD_NAME;
+
+@Slf4j
public class CounterStreamProcessorTopologyTest
{
public final static String IN = "TEST-IN";
new CounterApplicationConfiguriation();
Properties streamProcessorProperties =
applicationConfiguriation.streamProcessorProperties(new CounterApplicationProperties());
+ Map<String, Object> propertyMap = convertToMap(streamProcessorProperties);
+
+ JsonSerde<?> keySerde = new JsonSerde<>();
+ keySerde.configure(propertyMap, true);
+ JsonSerde<?> valueSerde = new JsonSerde<>();
+ valueSerde.configure(propertyMap, false);
TopologyTestDriver testDriver = new TopologyTestDriver(topology, streamProcessorProperties);
TestInputTopic<String, Word> in = testDriver.createInputTopic(
IN,
- new JsonSerializer<>(),
- new JsonSerializer<>());
+ (JsonSerializer<String>)keySerde.serializer(),
+ (JsonSerializer<Word>)valueSerde.serializer());
- TestOutputTopic<String, String> out = testDriver.createOutputTopic(
+ TestOutputTopic<Word, WordCounter> out = testDriver.createOutputTopic(
OUT,
- new StringDeserializer(),
- new StringDeserializer());
+ (JsonDeserializer<Word>)keySerde.deserializer(),
+ (JsonDeserializer<WordCounter>)valueSerde.deserializer());
TestData.writeInputData((key, value) -> in.pipeInput(key, value));
- List<Message> receivedMessages = out
+ List<KeyValue<Word, WordCounter>> receivedMessages = out
.readRecordsToList()
.stream()
- .map(record -> Message.of(record.key(), record.value()))
+ .map(record ->
+ {
+ log.debug(
+ "OUT: {} -> {}, {}, {}",
+ record.key(),
+ record.value(),
+ parseHeader(record.headers(), KEY_DEFAULT_CLASSID_FIELD_NAME),
+ parseHeader(record.headers(), DEFAULT_CLASSID_FIELD_NAME));
+ return KeyValue.pair(record.key(), record.value());
+ })
.toList();
TestData.assertExpectedResult(receivedMessages);