+ TestData.assertExpectedNumberOfMessagesForWord(receivedMessages);
+ TestData.assertExpectedLastMessagesForWord(receivedMessages);
+
+ KeyValueStore<Word, Long> store = testDriver.getKeyValueStore(STORE_NAME);
+ TestData.assertExpectedState(store);
+ }
+
+ @AfterEach
+ public void tearDown()
+ {
+ testDriver.close();
+ }
+
+
+ private static JsonSerializer serializer()
+ {
+ return new JsonSerializer().noTypeInfo();
+ }
+
+ private 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 typeMappings()
+ .entrySet()