package de.juplo.kafka.wordcount.counter;
-import org.apache.kafka.common.serialization.StringDeserializer;
-import org.apache.kafka.common.serialization.StringSerializer;
+import lombok.extern.slf4j.Slf4j;
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 org.apache.kafka.streams.state.Stores;
+import org.junit.jupiter.api.AfterEach;
+import org.junit.jupiter.api.BeforeEach;
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 org.springframework.util.LinkedMultiValueMap;
+import org.springframework.util.MultiValueMap;
-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";
public final static String OUT = "TEST-OUT";
- @Test
- public void test()
+
+ TopologyTestDriver testDriver;
+ TestInputTopic<String, Word> in;
+ TestOutputTopic<Word, WordCounter> out;
+
+
+ @BeforeEach
+ public void setUpTestDriver()
{
Topology topology = CounterStreamProcessor.buildTopology(
IN,
OUT,
Stores.inMemoryKeyValueStore("TOPOLOGY-TEST"));
- CounterApplicationConfiguriation config =
+ CounterApplicationConfiguriation applicationConfiguriation =
new CounterApplicationConfiguriation();
- Properties properties =
- config.propertyMap(new CounterApplicationProperties());
+ Properties streamProcessorProperties =
+ applicationConfiguriation.streamProcessorProperties(new CounterApplicationProperties());
+ Map<String, Object> propertyMap = convertToMap(streamProcessorProperties);
- TopologyTestDriver testDriver = new TopologyTestDriver(topology, properties);
+ JsonSerde<?> keySerde = new JsonSerde<>();
+ keySerde.configure(propertyMap, true);
+ JsonSerde<?> valueSerde = new JsonSerde<>();
+ valueSerde.configure(propertyMap, false);
- TestInputTopic<String, String> in = testDriver.createInputTopic(
+ testDriver = new TopologyTestDriver(topology, streamProcessorProperties);
+
+ in = testDriver.createInputTopic(
IN,
- new StringSerializer(),
- new StringSerializer());
+ (JsonSerializer<String>)keySerde.serializer(),
+ (JsonSerializer<Word>)valueSerde.serializer());
- TestOutputTopic<String, String> out = testDriver.createOutputTopic(
+ 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
+ @Test
+ public void test()
+ {
+ TestData.injectInputMessages((key, value) -> in.pipeInput(key, value));
+
+ MultiValueMap<Word, WordCounter> receivedMessages = new LinkedMultiValueMap<>();
+ out
.readRecordsToList()
- .stream()
- .map(record -> Message.of(record.key(), record.value()))
- .toList();
+ .forEach(record ->
+ {
+ log.debug(
+ "OUT: {} -> {}, {}, {}",
+ record.key(),
+ record.value(),
+ parseHeader(record.headers(), KEY_DEFAULT_CLASSID_FIELD_NAME),
+ parseHeader(record.headers(), DEFAULT_CLASSID_FIELD_NAME));
+ receivedMessages.add(record.key(), record.value());
+ });
- TestData.assertExpectedResult(receivedMessages);
+ TestData.assertExpectedMessages(receivedMessages);
+ }
+
+ @AfterEach
+ public void tearDown()
+ {
+ testDriver.close();
}
}