1 package de.juplo.kafka.wordcount.counter;
3 import org.apache.kafka.streams.*;
4 import org.apache.kafka.streams.state.Stores;
5 import org.junit.jupiter.api.Test;
6 import org.springframework.kafka.support.serializer.JsonDeserializer;
7 import org.springframework.kafka.support.serializer.JsonSerde;
8 import org.springframework.kafka.support.serializer.JsonSerializer;
10 import java.util.List;
12 import java.util.Properties;
14 import static de.juplo.kafka.wordcount.counter.TestData.convertToMap;
17 public class CounterStreamProcessorTopologyTest
19 public final static String IN = "TEST-IN";
20 public final static String OUT = "TEST-OUT";
25 Topology topology = CounterStreamProcessor.buildTopology(
28 Stores.inMemoryKeyValueStore("TOPOLOGY-TEST"));
30 CounterApplicationConfiguriation applicationConfiguriation =
31 new CounterApplicationConfiguriation();
32 Properties streamProcessorProperties =
33 applicationConfiguriation.streamProcessorProperties(new CounterApplicationProperties());
34 Map<String, Object> propertyMap = convertToMap(streamProcessorProperties);
36 JsonSerde<?> keySerde = new JsonSerde<>();
37 keySerde.configure(propertyMap, true);
38 JsonSerde<?> valueSerde = new JsonSerde<>();
39 valueSerde.configure(propertyMap, false);
41 TopologyTestDriver testDriver = new TopologyTestDriver(topology, streamProcessorProperties);
43 TestInputTopic<String, Word> in = testDriver.createInputTopic(
45 (JsonSerializer<String>)keySerde.serializer(),
46 (JsonSerializer<Word>)valueSerde.serializer());
48 TestOutputTopic<Word, WordCount> out = testDriver.createOutputTopic(
50 (JsonDeserializer<Word>)keySerde.deserializer(),
51 (JsonDeserializer<WordCount>)valueSerde.deserializer());
53 TestData.writeInputData((key, value) -> in.pipeInput(key, value));
55 List<KeyValue<Word,WordCount>> receivedMessages = out
58 .map(record -> KeyValue.pair(record.key(), record.value()))
61 TestData.assertExpectedResult(receivedMessages);