recorder: 1.1.2 - The `JsonSerializer` is used for serialization

[demos/kafka/wordcount] / src / test / java / de / juplo / kafka / wordcount / recorder / ApplicationTests.java

diff --git a/src/test/java/de/juplo/kafka/wordcount/recorder/ApplicationTests.java b/src/test/java/de/juplo/kafka/wordcount/recorder/ApplicationTests.java
index 885a408..a76c223 100644 (file)
--- a/src/test/java/de/juplo/kafka/wordcount/recorder/ApplicationTests.java
+++ b/src/test/java/de/juplo/kafka/wordcount/recorder/ApplicationTests.java
@@ -1,13 +1,135 @@
 package de.juplo.kafka.wordcount.recorder;
 
+import lombok.extern.slf4j.Slf4j;
+import org.junit.jupiter.api.DisplayName;
 import org.junit.jupiter.api.Test;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.autoconfigure.web.servlet.AutoConfigureMockMvc;
 import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.boot.test.context.TestConfiguration;
+import org.springframework.context.annotation.Bean;
+import org.springframework.http.MediaType;
+import org.springframework.kafka.annotation.KafkaListener;
+import org.springframework.kafka.support.KafkaHeaders;
+import org.springframework.kafka.test.context.EmbeddedKafka;
+import org.springframework.messaging.handler.annotation.Header;
+import org.springframework.messaging.handler.annotation.Payload;
+import org.springframework.test.web.servlet.MockMvc;
+import org.springframework.test.web.servlet.MvcResult;
+import org.springframework.util.LinkedMultiValueMap;
+import org.springframework.util.MultiValueMap;
 
-@SpringBootTest
+import java.time.Duration;
+import java.util.List;
+import java.util.stream.Stream;
+
+import static de.juplo.kafka.wordcount.recorder.ApplicationTests.TOPIC_OUT;
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.awaitility.Awaitility.await;
+import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.asyncDispatch;
+import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.post;
+import static org.springframework.test.web.servlet.result.MockMvcResultHandlers.print;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.jsonPath;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;
+
+
+@SpringBootTest(
+               properties = {
+                               "spring.kafka.consumer.auto-offset-reset=earliest",
+                               "spring.kafka.consumer.value-deserializer=org.springframework.kafka.support.serializer.JsonDeserializer",
+                               "spring.kafka.consumer.properties.spring.json.value.default.type=de.juplo.kafka.wordcount.recorder.RecordingData",
+                               "spring.kafka.consumer.properties.spring.json.trusted.packages=de.juplo.kafka.wordcount.recorder",
+                               "logging.level.root=WARN",
+                               "logging.level.de.juplo=DEBUG",
+                               "juplo.wordcount.recorder.bootstrap-server=${spring.embedded.kafka.brokers}",
+                               "juplo.wordcount.recorder.topic=" + TOPIC_OUT })
+@AutoConfigureMockMvc
+@EmbeddedKafka(topics = { TOPIC_OUT })
+@Slf4j
 class ApplicationTests
 {
+       static final String TOPIC_OUT = "out";
+
+       @Autowired
+       MockMvc mockMvc;
+       @Autowired
+       Consumer consumer;
+
+
        @Test
-       void contextLoads()
+       @DisplayName("Posted messages are accepted and sent to Kafka")
+       void userMessagesAreAcceptedAndSentToKafka()
+       {
+               MultiValueMap<String, RecordingData> recordings = new LinkedMultiValueMap<>();
+
+               Stream
+                               .of(
+                                               new RecordingData("päter", "Hall° Wält?¢*&%€!"),
+                                               new RecordingData("päter", "Hallo Welt!"),
+                                               new RecordingData("klühs", "Müsch gäb's auch!"),
+                                               new RecordingData("päter", "Boäh, echt! ß mal nä Nümmäh!"))
+                               .forEach(recording ->
+                               {
+                                       sendRedording(recording.getUser(), recording.getSentence());
+                                       recordings.add(recording.getUser(), recording);
+                               });
+
+
+               await("Received expected messages")
+                               .atMost(Duration.ofSeconds(5))
+                               .untilAsserted(() -> recordings.forEach((user, userRecordings) ->
+                                               assertThat(consumer.receivedFor(user)).containsExactlyElementsOf(userRecordings)));
+       }
+
+       void sendRedording(String user, String sentence)
+       {
+               try
+               {
+                       MvcResult result = mockMvc
+                                       .perform(post("/{user}", user)
+                                                       .contentType(MediaType.TEXT_PLAIN)
+                                                       .content(sentence))
+                                       .andReturn();
+
+                       mockMvc.perform(asyncDispatch(result))
+                                       .andDo(print())
+                                       .andExpect(status().isOk())
+                                       .andExpect(jsonPath("$.username").value(user))
+                                       .andExpect(jsonPath("$.sentence").value(sentence));
+               }
+               catch (Exception e)
+               {
+                       throw new RuntimeException(e);
+               }
+       }
+
+
+       static class Consumer
+       {
+               private final MultiValueMap<String, RecordingData> received = new LinkedMultiValueMap<>();
+
+               @KafkaListener(groupId = "TEST", topics = TOPIC_OUT)
+               public synchronized void receive(
+                               @Header(KafkaHeaders.RECEIVED_KEY) String user,
+                               @Payload RecordingData recording)
+               {
+                       log.debug("Received message: {}={}", user, recording);
+                       received.add(user, recording);
+               }
+
+               synchronized List<RecordingData> receivedFor(String user)
+               {
+                       return received.get(user);
+               }
+       }
+
+       @TestConfiguration
+       static class Configuration
        {
+               @Bean
+               Consumer consumer()
+               {
+                       return new Consumer();
+               }
        }
 }