+package de.juplo.kafka.wordcount.top10;
+
+import de.juplo.kafka.wordcount.counter.TestCounter;
+import de.juplo.kafka.wordcount.counter.TestWord;
+import org.apache.kafka.common.header.Header;
+import org.apache.kafka.common.header.Headers;
+import org.apache.kafka.streams.KeyValue;
+import org.springframework.util.LinkedMultiValueMap;
+import org.springframework.util.MultiValueMap;
+
+import java.util.Map;
+import java.util.Properties;
+import java.util.stream.Collectors;
+import java.util.stream.Stream;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+
+class TestData
+{
+ static final KeyValue<TestWord, TestCounter>[] INPUT_MESSAGES = new KeyValue[]
+ {
+ new KeyValue<>(
+ TestWord.of("peter","Hallo"),
+ TestCounter.of("peter","Hallo",1)),
+ new KeyValue<>(
+ TestWord.of("klaus","Müsch"),
+ TestCounter.of("klaus","Müsch",1)),
+ new KeyValue<>(
+ TestWord.of("peter","Welt"),
+ TestCounter.of("peter","Welt",1)),
+ new KeyValue<>(
+ TestWord.of("klaus","Müsch"),
+ TestCounter.of("klaus","Müsch",2)),
+ new KeyValue<>(
+ TestWord.of("klaus","s"),
+ TestCounter.of("klaus","s",1)),
+ new KeyValue<>(
+ TestWord.of("peter","Boäh"),
+ TestCounter.of("peter","Boäh",1)),
+ new KeyValue<>(
+ TestWord.of("peter","Welt"),
+ TestCounter.of("peter","Welt",2)),
+ new KeyValue<>(
+ TestWord.of("peter","Boäh"),
+ TestCounter.of("peter","Boäh",2)),
+ new KeyValue<>(
+ TestWord.of("klaus","s"),
+ TestCounter.of("klaus","s",2)),
+ new KeyValue<>(
+ TestWord.of("peter","Boäh"),
+ TestCounter.of("peter","Boäh",3)),
+ new KeyValue<>(
+ TestWord.of("klaus","s"),
+ TestCounter.of("klaus","s",3)),
+ };
+
+ static void assertExpectedMessages(MultiValueMap<String, Ranking> receivedMessages)
+ {
+ expectedMessages().forEach(
+ (user, rankings) ->
+ assertThat(receivedMessages.get(user))
+ .containsExactlyElementsOf(rankings));
+ }
+
+ static KeyValue<String, Ranking>[] EXPECTED_MESSAGES = new KeyValue[]
+ {
+ KeyValue.pair( // 0
+ "peter",
+ Ranking.of(
+ Entry.of("Hallo", 1l))),
+ KeyValue.pair( // 1
+ "klaus",
+ Ranking.of(
+ Entry.of("Müsch", 1l))),
+ KeyValue.pair( // 2
+ "peter",
+ Ranking.of(
+ Entry.of("Hallo", 1l),
+ Entry.of("Welt", 1l))),
+ KeyValue.pair( // 3
+ "klaus",
+ Ranking.of(
+ Entry.of("Müsch", 2l))),
+ KeyValue.pair( // 4
+ "klaus",
+ Ranking.of(
+ Entry.of("Müsch", 2l),
+ Entry.of("s", 1l))),
+ KeyValue.pair( // 5
+ "peter",
+ Ranking.of(
+ Entry.of("Hallo", 1l),
+ Entry.of("Welt", 1l),
+ Entry.of("Boäh", 1l))),
+ KeyValue.pair( // 6
+ "peter",
+ Ranking.of(
+ Entry.of("Welt", 2l),
+ Entry.of("Hallo", 1l),
+ Entry.of("Boäh", 1l))),
+ KeyValue.pair( // 7
+ "peter",
+ Ranking.of(
+ Entry.of("Welt", 2l),
+ Entry.of("Boäh", 2l),
+ Entry.of("Hallo", 1l))),
+ KeyValue.pair( // 8
+ "klaus",
+ Ranking.of(
+ Entry.of("Müsch", 2l),
+ Entry.of("s", 2l))),
+ KeyValue.pair( // 9
+ "peter",
+ Ranking.of(
+ Entry.of("Boäh", 3l),
+ Entry.of("Welt", 2l),
+ Entry.of("Hallo", 1l))),
+ KeyValue.pair( // 10
+ "klaus",
+ Ranking.of(
+ Entry.of("s", 3l),
+ Entry.of("Müsch", 2l))),
+ };
+
+ static MultiValueMap<String, Ranking> expectedMessages()
+ {
+ MultiValueMap<String, Ranking> expectedMessages = new LinkedMultiValueMap<>();
+ Stream
+ .of(EXPECTED_MESSAGES)
+ .forEach(keyValue -> expectedMessages.add(keyValue.key, keyValue.value));
+ return expectedMessages;
+ }
+
+ static Map<String, Object> convertToMap(Properties properties)
+ {
+ return properties
+ .entrySet()
+ .stream()
+ .collect(
+ Collectors.toMap(
+ entry -> (String)entry.getKey(),
+ entry -> entry.getValue()
+ ));
+ }
+
+ static String parseHeader(Headers headers, String key)
+ {
+ Header header = headers.lastHeader(key);
+ if (header == null)
+ {
+ return key + "=null";
+ }
+ else
+ {
+ return key + "=" + new String(header.value());
+ }
+ }
+}