package de.juplo.kafka.wordcount.counter;
-import org.apache.kafka.common.serialization.StringDeserializer;
+import de.juplo.kafka.wordcount.splitter.TestInputWord;
+import de.juplo.kafka.wordcount.top10.TestOutputWord;
+import de.juplo.kafka.wordcount.top10.TestOutputWordCounter;
+import lombok.extern.slf4j.Slf4j;
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 org.apache.kafka.streams.state.KeyValueStore;
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.JsonSerializer;
+import org.springframework.util.LinkedMultiValueMap;
+import org.springframework.util.MultiValueMap;
-import java.util.List;
-import java.util.Properties;
+import static de.juplo.kafka.wordcount.counter.CounterApplicationConfiguriation.serializationConfig;
+@Slf4j
public class CounterStreamProcessorTopologyTest
{
- public final static String IN = "TEST-IN";
- public final static String OUT = "TEST-OUT";
+ public static final String IN = "TEST-IN";
+ public static final String OUT = "TEST-OUT";
+ public static final String STORE_NAME = "TOPOLOGY-TEST";
- @Test
- public void test()
+
+ TopologyTestDriver testDriver;
+ TestInputTopic<String, TestInputWord> in;
+ TestOutputTopic<TestOutputWord, TestOutputWordCounter> out;
+
+
+ @BeforeEach
+ public void setUpTestDriver()
{
Topology topology = CounterStreamProcessor.buildTopology(
IN,
OUT,
- Stores.inMemoryKeyValueStore("TOPOLOGY-TEST"));
-
- CounterApplicationConfiguriation applicationConfiguriation =
- new CounterApplicationConfiguriation();
- Properties streamProcessorProperties =
- applicationConfiguriation.streamProcessorProperties(new CounterApplicationProperties());
+ Stores.inMemoryKeyValueStore(STORE_NAME));
- TopologyTestDriver testDriver = new TopologyTestDriver(topology, streamProcessorProperties);
+ testDriver = new TopologyTestDriver(topology, serializationConfig());
- TestInputTopic<String, Word> in = testDriver.createInputTopic(
+ in = testDriver.createInputTopic(
IN,
- new JsonSerializer<>(),
- new JsonSerializer<>());
+ new StringSerializer(),
+ new JsonSerializer().noTypeInfo());
- TestOutputTopic<String, String> out = testDriver.createOutputTopic(
+ out = testDriver.createOutputTopic(
OUT,
- new StringDeserializer(),
- new StringDeserializer());
+ new JsonDeserializer()
+ .copyWithType(TestOutputWord.class)
+ .ignoreTypeHeaders(),
+ new JsonDeserializer()
+ .copyWithType(TestOutputWordCounter.class)
+ .ignoreTypeHeaders());
+ }
+
- TestData.writeInputData((key, value) -> in.pipeInput(key, value));
+ @Test
+ public void test()
+ {
+ TestData
+ .getInputMessages()
+ .forEach(kv -> in.pipeInput(kv.key, kv.value));
- List<Message> receivedMessages = out
+ MultiValueMap<TestOutputWord, TestOutputWordCounter> receivedMessages = new LinkedMultiValueMap<>();
+ out
.readRecordsToList()
- .stream()
- .map(record -> Message.of(record.key(), record.value()))
- .toList();
+ .forEach(record -> receivedMessages.add(record.key(), record.value()));
+
+ TestData.assertExpectedMessages(receivedMessages);
- TestData.assertExpectedResult(receivedMessages);
+ TestData.assertExpectedNumberOfMessagesForWord(receivedMessages);
+ TestData.assertExpectedLastMessagesForWord(receivedMessages);
+
+ KeyValueStore<Word, Long> store = testDriver.getKeyValueStore(STORE_NAME);
+ TestData.assertExpectedState(store);
+ }
+
+ @AfterEach
+ public void tearDown()
+ {
+ testDriver.close();
}
}