1 package de.juplo.kafka.wordcount.counter;
3 import de.juplo.kafka.wordcount.splitter.TestInputWord;
4 import de.juplo.kafka.wordcount.top10.TestOutputWord;
5 import de.juplo.kafka.wordcount.top10.TestOutputWordCounter;
6 import org.apache.kafka.streams.KeyValue;
7 import org.apache.kafka.streams.state.ReadOnlyKeyValueStore;
8 import org.springframework.util.LinkedMultiValueMap;
9 import org.springframework.util.MultiValueMap;
11 import java.util.function.Consumer;
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<String, TestInputWord>[] INPUT_MESSAGES = new KeyValue[]
38 TestInputWord.of(PETER, WORD_HALLO)),
41 TestInputWord.of(KLAUS, WORD_MÜSCH)),
44 TestInputWord.of(PETER, WORD_WELT)),
47 TestInputWord.of(KLAUS, WORD_MÜSCH)),
50 TestInputWord.of(KLAUS, WORD_S)),
53 TestInputWord.of(PETER, WORD_BOÄH)),
56 TestInputWord.of(PETER, WORD_WELT)),
59 TestInputWord.of(PETER, WORD_BOÄH)),
62 TestInputWord.of(KLAUS, WORD_S)),
65 TestInputWord.of(PETER, WORD_BOÄH)),
68 TestInputWord.of(KLAUS, WORD_S)),
71 static Stream<KeyValue<String, TestInputWord>> getInputMessages()
73 return Stream.of(TestData.INPUT_MESSAGES);
76 static Consumer<MultiValueMap<TestOutputWord, TestOutputWordCounter>> expectedMessagesAssertion()
78 return receivedMessages -> assertExpectedMessages(receivedMessages);
81 static void assertExpectedMessages(MultiValueMap<TestOutputWord, TestOutputWordCounter> receivedMessages)
83 expectedMessages().forEach(
85 assertThat(receivedMessages.get(word))
86 .containsExactlyElementsOf(counter));
89 static Consumer<MultiValueMap<TestOutputWord, TestOutputWordCounter>> expectedNumberOfMessagesForWordAssertion()
91 return receivedMessages -> assertExpectedNumberOfMessagesForWord(receivedMessages);
94 static void assertExpectedNumberOfMessagesForWord(MultiValueMap<TestOutputWord, TestOutputWordCounter> receivedMessages)
96 assertThat(countMessagesForWord(PETER_HALLO, receivedMessages));
97 assertThat(countMessagesForWord(PETER_WELT, receivedMessages));
98 assertThat(countMessagesForWord(PETER_BOÄH, receivedMessages));
99 assertThat(countMessagesForWord(KLAUS_MÜSCH, receivedMessages));
100 assertThat(countMessagesForWord(KLAUS_S, receivedMessages));
103 private static int countMessagesForWord(TestOutputWord word, MultiValueMap<TestOutputWord, TestOutputWordCounter> messagesForUsers)
105 return messagesForUsers.get(word).size();
108 static Consumer<MultiValueMap<TestOutputWord, TestOutputWordCounter>> expectedLastMessagesForWordAssertion()
110 return receivedMessages -> assertExpectedLastMessagesForWord(receivedMessages);
113 static void assertExpectedState(ReadOnlyKeyValueStore<Word, Long> store)
115 assertWordCountEqualsWordCountFromLastMessage(PETER_HALLO, store.get(wordOf(PETER_HALLO)));
116 assertWordCountEqualsWordCountFromLastMessage(PETER_WELT, store.get(wordOf(PETER_WELT)));
117 assertWordCountEqualsWordCountFromLastMessage(PETER_BOÄH, store.get(wordOf(PETER_BOÄH)));
118 assertWordCountEqualsWordCountFromLastMessage(KLAUS_MÜSCH, store.get(wordOf(KLAUS_MÜSCH)));
119 assertWordCountEqualsWordCountFromLastMessage(KLAUS_S, store.get(wordOf(KLAUS_S)));
122 private static Word wordOf(TestOutputWord testOutputWord)
124 Word word = new Word();
126 word.setUser(testOutputWord.getUser());
127 word.setWord(testOutputWord.getWord());
132 static void assertExpectedLastMessagesForWord(MultiValueMap<TestOutputWord, TestOutputWordCounter> receivedMessages)
134 assertWordCountEqualsWordCountFromLastMessage(PETER_HALLO, getLastMessageFor(PETER_HALLO, receivedMessages));
135 assertWordCountEqualsWordCountFromLastMessage(PETER_WELT, getLastMessageFor(PETER_WELT, receivedMessages));
136 assertWordCountEqualsWordCountFromLastMessage(PETER_BOÄH, getLastMessageFor(PETER_BOÄH, receivedMessages));
137 assertWordCountEqualsWordCountFromLastMessage(KLAUS_MÜSCH, getLastMessageFor(KLAUS_MÜSCH, receivedMessages));
138 assertWordCountEqualsWordCountFromLastMessage(KLAUS_S, getLastMessageFor(KLAUS_S, receivedMessages));
141 private static void assertWordCountEqualsWordCountFromLastMessage(
145 TestOutputWordCounter testOutputWordCounter = TestOutputWordCounter.of(
149 assertWordCountEqualsWordCountFromLastMessage(word, testOutputWordCounter);
152 private static void assertWordCountEqualsWordCountFromLastMessage(
154 TestOutputWordCounter counter)
156 assertThat(counter).isEqualTo(getLastMessageFor(word));
159 private static TestOutputWordCounter getLastMessageFor(TestOutputWord word)
161 return getLastMessageFor(word, expectedMessages());
164 private static TestOutputWordCounter getLastMessageFor(
166 MultiValueMap<TestOutputWord, TestOutputWordCounter> messagesForWord)
168 return messagesForWord
171 .reduce(null, (left, right) -> right);
174 private static final KeyValue<TestOutputWord, TestOutputWordCounter>[] EXPECTED_MESSAGES = new KeyValue[]
178 TestOutputWordCounter.of(PETER, WORD_HALLO,1)),
181 TestOutputWordCounter.of(KLAUS, WORD_MÜSCH,1)),
184 TestOutputWordCounter.of(PETER, WORD_WELT,1)),
187 TestOutputWordCounter.of(KLAUS, WORD_MÜSCH,2)),
190 TestOutputWordCounter.of(KLAUS, WORD_S,1)),
193 TestOutputWordCounter.of(PETER, WORD_BOÄH,1)),
196 TestOutputWordCounter.of(PETER, WORD_WELT,2)),
199 TestOutputWordCounter.of(PETER, WORD_BOÄH,2)),
202 TestOutputWordCounter.of(KLAUS, WORD_S,2)),
205 TestOutputWordCounter.of(PETER, WORD_BOÄH,3)),
208 TestOutputWordCounter.of(KLAUS, WORD_S,3)),
211 static MultiValueMap<TestOutputWord, TestOutputWordCounter> expectedMessages()
213 MultiValueMap<TestOutputWord, TestOutputWordCounter> expectedMessages = new LinkedMultiValueMap<>();
215 .of(EXPECTED_MESSAGES)
216 .forEach(keyValue -> expectedMessages.add(keyValue.key, keyValue.value));
217 return expectedMessages;