top10: 1.2.1 - Refined assertion of expected state

[demos/kafka/wordcount] / src / test / java / de / juplo / kafka / wordcount / top10 / Top10StreamProcessorTopologyTest.java

diff --git a/src/test/java/de/juplo/kafka/wordcount/top10/Top10StreamProcessorTopologyTest.java b/src/test/java/de/juplo/kafka/wordcount/top10/Top10StreamProcessorTopologyTest.java
index 86314e5..1becd65 100644 (file)
--- a/src/test/java/de/juplo/kafka/wordcount/top10/Top10StreamProcessorTopologyTest.java
+++ b/src/test/java/de/juplo/kafka/wordcount/top10/Top10StreamProcessorTopologyTest.java
@@ -5,6 +5,8 @@ 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;
@@ -27,19 +29,23 @@ import static org.springframework.kafka.support.mapping.AbstractJavaTypeMapper.K
 @Slf4j
 public class Top10StreamProcessorTopologyTest
 {
-  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";
 
 
   TopologyTestDriver testDriver;
   TestInputTopic<Key, Entry> in;
-  TestOutputTopic<String, Ranking> out;
+  TestOutputTopic<User, Ranking> out;
 
 
   @BeforeEach
   public void setUp()
   {
-    Topology topology = Top10StreamProcessor.buildTopology(IN, OUT);
+    Topology topology = Top10StreamProcessor.buildTopology(
+        IN,
+        OUT,
+        Stores.inMemoryKeyValueStore(STORE_NAME));
 
     Top10ApplicationConfiguration applicationConfiguriation =
         new Top10ApplicationConfiguration();
@@ -61,7 +67,7 @@ public class Top10StreamProcessorTopologyTest
 
     out = testDriver.createOutputTopic(
         OUT,
-        (JsonDeserializer<String>)keySerde.deserializer(),
+        (JsonDeserializer<User>)keySerde.deserializer(),
         (JsonDeserializer<Ranking>)valueSerde.deserializer());
 
   }
@@ -76,7 +82,7 @@ public class Top10StreamProcessorTopologyTest
             Key.of(kv.key.getUser(), kv.key.getWord()),
             Entry.of(kv.value.getWord(), kv.value.getCounter())));
 
-    MultiValueMap<String, Ranking> receivedMessages = new LinkedMultiValueMap<>();
+    MultiValueMap<User, Ranking> receivedMessages = new LinkedMultiValueMap<>();
     out
         .readRecordsToList()
         .forEach(record ->
@@ -91,6 +97,9 @@ public class Top10StreamProcessorTopologyTest
         });
 
     TestData.assertExpectedMessages(receivedMessages);
+
+    KeyValueStore<User, Ranking> store = testDriver.getKeyValueStore(STORE_NAME);
+    TestData.assertExpectedState(store);
   }
 
   @AfterEach