counter: 1.2.15 - Added assertion for the expected state

[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 714e585..4e431e1 100644 (file)
--- a/src/test/java/de/juplo/kafka/wordcount/counter/TestData.java
+++ b/src/test/java/de/juplo/kafka/wordcount/counter/TestData.java
@@ -4,6 +4,7 @@ import de.juplo.kafka.wordcount.splitter.TestInputWord;
 import de.juplo.kafka.wordcount.top10.TestOutputWord;
 import de.juplo.kafka.wordcount.top10.TestOutputWordCounter;
 import org.apache.kafka.streams.KeyValue;
+import org.apache.kafka.streams.state.ReadOnlyKeyValueStore;
 import org.springframework.util.LinkedMultiValueMap;
 import org.springframework.util.MultiValueMap;
 
@@ -85,6 +86,91 @@ class TestData
                                                                .containsExactlyElementsOf(counter));
        }
 
+       static Consumer<MultiValueMap<TestOutputWord, TestOutputWordCounter>> expectedNumberOfMessagesForWordAssertion()
+       {
+               return receivedMessages -> assertExpectedNumberOfMessagesForWord(receivedMessages);
+       }
+
+       static void assertExpectedNumberOfMessagesForWord(MultiValueMap<TestOutputWord, TestOutputWordCounter> receivedMessages)
+       {
+               assertThat(countMessagesForWord(PETER_HALLO, receivedMessages));
+               assertThat(countMessagesForWord(PETER_WELT, receivedMessages));
+               assertThat(countMessagesForWord(PETER_BOÄH, receivedMessages));
+               assertThat(countMessagesForWord(KLAUS_MÜSCH, receivedMessages));
+               assertThat(countMessagesForWord(KLAUS_S, receivedMessages));
+       }
+
+       private static int countMessagesForWord(TestOutputWord word, MultiValueMap<TestOutputWord, TestOutputWordCounter> messagesForUsers)
+       {
+               return messagesForUsers.get(word).size();
+       }
+
+       static Consumer<MultiValueMap<TestOutputWord, TestOutputWordCounter>> expectedLastMessagesForWordAssertion()
+       {
+               return receivedMessages -> assertExpectedLastMessagesForWord(receivedMessages);
+       }
+
+       static void assertExpectedState(ReadOnlyKeyValueStore<Word, Long> store)
+       {
+               assertWordCountEqualsWordCountFromLastMessage(PETER_HALLO, store.get(wordOf(PETER_HALLO)));
+               assertWordCountEqualsWordCountFromLastMessage(PETER_WELT, store.get(wordOf(PETER_WELT)));
+               assertWordCountEqualsWordCountFromLastMessage(PETER_BOÄH, store.get(wordOf(PETER_BOÄH)));
+               assertWordCountEqualsWordCountFromLastMessage(KLAUS_MÜSCH, store.get(wordOf(KLAUS_MÜSCH)));
+               assertWordCountEqualsWordCountFromLastMessage(KLAUS_S, store.get(wordOf(KLAUS_S)));
+       }
+
+       private static Word wordOf(TestOutputWord testOutputWord)
+       {
+               Word word = new Word();
+
+               word.setUser(testOutputWord.getUser());
+               word.setWord(testOutputWord.getWord());
+
+               return word;
+       }
+
+       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,
+                       Long counter)
+       {
+               TestOutputWordCounter testOutputWordCounter = TestOutputWordCounter.of(
+                               word.getUser(),
+                               word.getWord(),
+                               counter);
+               assertWordCountEqualsWordCountFromLastMessage(word, testOutputWordCounter);
+       }
+
+       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(