package de.juplo.kafka.wordcount.counter;
+import de.juplo.kafka.wordcount.splitter.TestInputUser;
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.AfterAll;
+import org.junit.jupiter.api.BeforeAll;
+import org.junit.jupiter.api.DisplayName;
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.Map;
+
import static de.juplo.kafka.wordcount.counter.CounterApplicationConfiguriation.serializationConfig;
+import static de.juplo.kafka.wordcount.counter.CounterStreamProcessor.STORE_NAME;
@Slf4j
{
public static final String IN = "TEST-IN";
public static final String OUT = "TEST-OUT";
- public static final String STORE_NAME = "TOPOLOGY-TEST";
- TopologyTestDriver testDriver;
- TestInputTopic<String, TestInputWord> in;
- TestOutputTopic<TestOutputWord, TestOutputWordCounter> out;
+ static TopologyTestDriver testDriver;
+ static MultiValueMap<TestOutputWord, TestOutputWordCounter> receivedMessages = new LinkedMultiValueMap<>();
- @BeforeEach
- public void setUpTestDriver()
+ @BeforeAll
+ public static void setUpTestDriver()
{
Topology topology = CounterStreamProcessor.buildTopology(
IN,
testDriver = new TopologyTestDriver(topology, serializationConfig());
- in = testDriver.createInputTopic(
- IN,
- new StringSerializer(),
- new JsonSerializer().noTypeInfo());
-
- out = testDriver.createOutputTopic(
- OUT,
- new JsonDeserializer()
- .copyWithType(TestOutputWord.class)
- .ignoreTypeHeaders(),
- new JsonDeserializer()
- .copyWithType(TestOutputWordCounter.class)
- .ignoreTypeHeaders());
- }
-
+ TestInputTopic<TestInputUser, TestInputWord> in =
+ testDriver.createInputTopic(IN, serializer(), serializer());
+ TestOutputTopic<TestOutputWord, TestOutputWordCounter> out =
+ testDriver.createOutputTopic(OUT, keyDeserializer(), valueDeserializer());
- @Test
- public void test()
- {
TestData
.getInputMessages()
.forEach(kv -> in.pipeInput(kv.key, kv.value));
- MultiValueMap<TestOutputWord, TestOutputWordCounter> receivedMessages = new LinkedMultiValueMap<>();
+ receivedMessages = new LinkedMultiValueMap<>();
out
.readRecordsToList()
.forEach(record -> receivedMessages.add(record.key(), record.value()));
+ }
+
+ @DisplayName("Assert the expected output messages")
+ @Test
+ public void testExpectedMessages()
+ {
TestData.assertExpectedMessages(receivedMessages);
+ }
+ @DisplayName("Assert the expected number of messages")
+ @Test
+ public void testExpectedNumberOfMessagesForWord()
+ {
TestData.assertExpectedNumberOfMessagesForWord(receivedMessages);
+ }
+
+ @DisplayName("Await the expected final output messages")
+ @Test
+ public void testExpectedLastMessagesForWord()
+ {
TestData.assertExpectedLastMessagesForWord(receivedMessages);
+ }
+ @DisplayName("Assert the expected state in the state-store")
+ @Test
+ public void testExpectedState()
+ {
KeyValueStore<Word, Long> store = testDriver.getKeyValueStore(STORE_NAME);
TestData.assertExpectedState(store);
}
- @AfterEach
- public void tearDown()
+ @AfterAll
+ public static void tearDown()
{
testDriver.close();
}
+
+
+ private static JsonSerializer serializer()
+ {
+ return new JsonSerializer().noTypeInfo();
+ }
+
+ private static JsonDeserializer<TestOutputWord> keyDeserializer()
+ {
+ return deserializer(true);
+ }
+
+ private static JsonDeserializer<TestOutputWordCounter> valueDeserializer()
+ {
+ return deserializer(false);
+ }
+
+ private static <T> JsonDeserializer<T> deserializer(boolean isKey)
+ {
+ JsonDeserializer<T> deserializer = new JsonDeserializer<>();
+ deserializer.configure(
+ Map.of(JsonDeserializer.TYPE_MAPPINGS, typeMappingsConfig()),
+ isKey);
+ return deserializer;
+ }
+
+ private static String typeMappingsConfig()
+ {
+ return CounterStreamProcessor.typeMappingsConfig(TestOutputWord.class, TestOutputWordCounter.class);
+ }
}