1 package de.juplo.kafka.wordcount.counter;
3 import de.juplo.kafka.wordcount.splitter.TestInputUser;
4 import de.juplo.kafka.wordcount.splitter.TestInputWord;
5 import de.juplo.kafka.wordcount.top10.TestOutputWord;
6 import de.juplo.kafka.wordcount.top10.TestOutputWordCounter;
7 import org.apache.kafka.streams.KeyValue;
8 import org.apache.kafka.streams.state.ReadOnlyKeyValueStore;
9 import org.springframework.util.LinkedMultiValueMap;
10 import org.springframework.util.MultiValueMap;
12 import java.util.stream.Stream;
14 import static org.assertj.core.api.Assertions.assertThat;
19 static final String PETER = "peter";
20 static final String KLAUS = "klaus";
22 static final String WORD_HALLO = "Hallo";
23 static final String WORD_MÜSCH = "Müsch";
24 static final String WORD_WELT = "Welt";
25 static final String WORD_S = "s";
26 static final String WORD_BOÄH = "Boäh";
28 static final TestOutputWord PETER_HALLO = TestOutputWord.of(PETER, WORD_HALLO);
29 static final TestOutputWord PETER_WELT = TestOutputWord.of(PETER, WORD_WELT);
30 static final TestOutputWord PETER_BOÄH = TestOutputWord.of(PETER, WORD_BOÄH);
31 static final TestOutputWord KLAUS_MÜSCH = TestOutputWord.of(KLAUS, WORD_MÜSCH);
32 static final TestOutputWord KLAUS_S = TestOutputWord.of(KLAUS, WORD_S);
34 private static final KeyValue<TestInputUser, TestInputWord>[] INPUT_MESSAGES = new KeyValue[]
37 TestInputUser.of(PETER),
38 TestInputWord.of(PETER, WORD_HALLO)),
40 TestInputUser.of(KLAUS),
41 TestInputWord.of(KLAUS, WORD_MÜSCH)),
43 TestInputUser.of(PETER),
44 TestInputWord.of(PETER, WORD_WELT)),
46 TestInputUser.of(KLAUS),
47 TestInputWord.of(KLAUS, WORD_MÜSCH)),
49 TestInputUser.of(KLAUS),
50 TestInputWord.of(KLAUS, WORD_S)),
52 TestInputUser.of(PETER),
53 TestInputWord.of(PETER, WORD_BOÄH)),
55 TestInputUser.of(PETER),
56 TestInputWord.of(PETER, WORD_WELT)),
58 TestInputUser.of(PETER),
59 TestInputWord.of(PETER, WORD_BOÄH)),
61 TestInputUser.of(KLAUS),
62 TestInputWord.of(KLAUS, WORD_S)),
64 TestInputUser.of(PETER),
65 TestInputWord.of(PETER, WORD_BOÄH)),
67 TestInputUser.of(KLAUS),
68 TestInputWord.of(KLAUS, WORD_S)),
71 static Stream<KeyValue<TestInputUser, TestInputWord>> getInputMessages()
73 return Stream.of(TestData.INPUT_MESSAGES);
76 static void assertExpectedMessages(MultiValueMap<TestOutputWord, TestOutputWordCounter> receivedMessages)
78 expectedMessages().forEach(
80 assertThat(receivedMessages.get(word))
81 .containsExactlyElementsOf(counter));
84 static void assertExpectedNumberOfMessagesForWord(MultiValueMap<TestOutputWord, TestOutputWordCounter> receivedMessages)
86 assertThat(countMessagesForWord(PETER_HALLO, receivedMessages));
87 assertThat(countMessagesForWord(PETER_WELT, receivedMessages));
88 assertThat(countMessagesForWord(PETER_BOÄH, receivedMessages));
89 assertThat(countMessagesForWord(KLAUS_MÜSCH, receivedMessages));
90 assertThat(countMessagesForWord(KLAUS_S, receivedMessages));
93 private static int countMessagesForWord(TestOutputWord word, MultiValueMap<TestOutputWord, TestOutputWordCounter> messagesForUsers)
95 return messagesForUsers.get(word).size();
98 static void assertExpectedState(ReadOnlyKeyValueStore<Word, Long> store)
100 assertWordCountEqualsWordCountFromLastMessage(PETER_HALLO, store.get(wordOf(PETER_HALLO)));
101 assertWordCountEqualsWordCountFromLastMessage(PETER_WELT, store.get(wordOf(PETER_WELT)));
102 assertWordCountEqualsWordCountFromLastMessage(PETER_BOÄH, store.get(wordOf(PETER_BOÄH)));
103 assertWordCountEqualsWordCountFromLastMessage(KLAUS_MÜSCH, store.get(wordOf(KLAUS_MÜSCH)));
104 assertWordCountEqualsWordCountFromLastMessage(KLAUS_S, store.get(wordOf(KLAUS_S)));
107 private static Word wordOf(TestOutputWord testOutputWord)
109 Word word = new Word();
111 word.setUser(testOutputWord.getUser());
112 word.setWord(testOutputWord.getWord());
117 static void assertExpectedLastMessagesForWord(MultiValueMap<TestOutputWord, TestOutputWordCounter> receivedMessages)
119 assertWordCountEqualsWordCountFromLastMessage(PETER_HALLO, getLastMessageFor(PETER_HALLO, receivedMessages));
120 assertWordCountEqualsWordCountFromLastMessage(PETER_WELT, getLastMessageFor(PETER_WELT, receivedMessages));
121 assertWordCountEqualsWordCountFromLastMessage(PETER_BOÄH, getLastMessageFor(PETER_BOÄH, receivedMessages));
122 assertWordCountEqualsWordCountFromLastMessage(KLAUS_MÜSCH, getLastMessageFor(KLAUS_MÜSCH, receivedMessages));
123 assertWordCountEqualsWordCountFromLastMessage(KLAUS_S, getLastMessageFor(KLAUS_S, receivedMessages));
126 private static void assertWordCountEqualsWordCountFromLastMessage(
130 TestOutputWordCounter testOutputWordCounter = TestOutputWordCounter.of(
134 assertWordCountEqualsWordCountFromLastMessage(word, testOutputWordCounter);
137 private static void assertWordCountEqualsWordCountFromLastMessage(
139 TestOutputWordCounter counter)
141 assertThat(counter).isEqualTo(getLastMessageFor(word));
144 private static TestOutputWordCounter getLastMessageFor(TestOutputWord word)
146 return getLastMessageFor(word, expectedMessages());
149 private static TestOutputWordCounter getLastMessageFor(
151 MultiValueMap<TestOutputWord, TestOutputWordCounter> messagesForWord)
153 return messagesForWord
156 .reduce(null, (left, right) -> right);
159 private static final KeyValue<TestOutputWord, TestOutputWordCounter>[] EXPECTED_MESSAGES = new KeyValue[]
163 TestOutputWordCounter.of(PETER, WORD_HALLO,1)),
166 TestOutputWordCounter.of(KLAUS, WORD_MÜSCH,1)),
169 TestOutputWordCounter.of(PETER, WORD_WELT,1)),
172 TestOutputWordCounter.of(KLAUS, WORD_MÜSCH,2)),
175 TestOutputWordCounter.of(KLAUS, WORD_S,1)),
178 TestOutputWordCounter.of(PETER, WORD_BOÄH,1)),
181 TestOutputWordCounter.of(PETER, WORD_WELT,2)),
184 TestOutputWordCounter.of(PETER, WORD_BOÄH,2)),
187 TestOutputWordCounter.of(KLAUS, WORD_S,2)),
190 TestOutputWordCounter.of(PETER, WORD_BOÄH,3)),
193 TestOutputWordCounter.of(KLAUS, WORD_S,3)),
196 static MultiValueMap<TestOutputWord, TestOutputWordCounter> expectedMessages()
198 MultiValueMap<TestOutputWord, TestOutputWordCounter> expectedMessages = new LinkedMultiValueMap<>();
200 .of(EXPECTED_MESSAGES)
201 .forEach(keyValue -> expectedMessages.add(keyValue.key, keyValue.value));
202 return expectedMessages;