counter: 1.2.15 - Added assertion for the expected final output messages

[demos/kafka/wordcount] / src / test / java / de / juplo / kafka / wordcount / counter / CounterStreamProcessorTopologyTest.java

diff --git a/src/test/java/de/juplo/kafka/wordcount/counter/CounterStreamProcessorTopologyTest.java b/src/test/java/de/juplo/kafka/wordcount/counter/CounterStreamProcessorTopologyTest.java
index fe85dc4..4b67052 100644 (file)
--- a/src/test/java/de/juplo/kafka/wordcount/counter/CounterStreamProcessorTopologyTest.java
+++ b/src/test/java/de/juplo/kafka/wordcount/counter/CounterStreamProcessorTopologyTest.java
@@ -1,56 +1,85 @@
 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.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";
 
-  @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());
-
-    TopologyTestDriver testDriver = new TopologyTestDriver(topology, streamProcessorProperties);
+    testDriver = new TopologyTestDriver(topology, serializationConfig());
 
-    TestInputTopic<String, String> in = testDriver.createInputTopic(
+    in = testDriver.createInputTopic(
         IN,
         new StringSerializer(),
-        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));
 
-    List<Message> receivedMessages = out
+  @Test
+  public void test()
+  {
+    TestData
+        .getInputMessages()
+        .forEach(kv -> in.pipeInput(kv.key, kv.value));
+
+    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);
+  }
+
+  @AfterEach
+  public void tearDown()
+  {
+    testDriver.close();
   }
 }