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

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

diff --git a/src/test/java/de/juplo/kafka/wordcount/counter/TestData.java b/src/test/java/de/juplo/kafka/wordcount/counter/TestData.java
index c9d871a..b5c6c46 100644 (file)
--- a/src/test/java/de/juplo/kafka/wordcount/counter/TestData.java
+++ b/src/test/java/de/juplo/kafka/wordcount/counter/TestData.java
@@ -104,6 +104,42 @@ class TestData
                return messagesForUsers.get(word).size();
        }
 
+       static Consumer<MultiValueMap<TestOutputWord, TestOutputWordCounter>> expectedLastMessagesForWordAssertion()
+       {
+               return receivedMessages -> assertExpectedLastMessagesForWord(receivedMessages);
+       }
+
+       static void assertExpectedLastMessagesForWord(MultiValueMap<TestOutputWord, TestOutputWordCounter> receivedMessages)
+       {
+               assertWordCountEqualsWordCountFromLastMessage(PETER_HALLO, getLastMessageFor(PETER_HALLO, receivedMessages));
+               assertWordCountEqualsWordCountFromLastMessage(PETER_WELT, getLastMessageFor(PETER_WELT, receivedMessages));
+               assertWordCountEqualsWordCountFromLastMessage(PETER_BOÄH, getLastMessageFor(PETER_BOÄH, receivedMessages));
+               assertWordCountEqualsWordCountFromLastMessage(KLAUS_MÜSCH, getLastMessageFor(KLAUS_MÜSCH, receivedMessages));
+               assertWordCountEqualsWordCountFromLastMessage(KLAUS_S, getLastMessageFor(KLAUS_S, receivedMessages));
+       }
+
+       private static void assertWordCountEqualsWordCountFromLastMessage(
+                       TestOutputWord word,
+                       TestOutputWordCounter counter)
+       {
+               assertThat(counter).isEqualTo(getLastMessageFor(word));
+       }
+
+       private static TestOutputWordCounter getLastMessageFor(TestOutputWord word)
+       {
+               return getLastMessageFor(word, expectedMessages());
+       }
+
+       private static TestOutputWordCounter getLastMessageFor(
+                       TestOutputWord user,
+                       MultiValueMap<TestOutputWord, TestOutputWordCounter> messagesForWord)
+       {
+               return messagesForWord
+                               .get(user)
+                               .stream()
+                               .reduce(null, (left, right) -> right);
+       }
+
        private static final KeyValue<TestOutputWord, TestOutputWordCounter>[] EXPECTED_MESSAGES = new KeyValue[]
        {
                        KeyValue.pair(