1 package de.juplo.kafka.chat.backend;
3 import de.juplo.kafka.chat.backend.api.ChatRoomInfoTo;
4 import de.juplo.kafka.chat.backend.api.MessageTo;
5 import lombok.extern.slf4j.Slf4j;
6 import org.awaitility.Awaitility;
7 import org.junit.jupiter.api.BeforeEach;
8 import org.junit.jupiter.api.Test;
9 import org.springframework.http.HttpStatus;
10 import org.springframework.http.MediaType;
11 import org.springframework.web.reactive.function.client.WebClient;
12 import org.testcontainers.junit.jupiter.Testcontainers;
13 import pl.rzrz.assertj.reactor.Assertions;
14 import reactor.core.publisher.Flux;
15 import reactor.core.publisher.Mono;
17 import java.time.Duration;
18 import java.util.List;
19 import java.util.concurrent.CompletableFuture;
24 public abstract class AbstractHandoverIT
26 static final int NUM_CHATROOMS = 23;
27 static final int NUM_CLIENTS = 17;
30 private final AbstractHandoverITContainers containers;
33 AbstractHandoverIT(AbstractHandoverITContainers containers)
35 this.containers = containers;
40 void test() throws InterruptedException
42 log.info("Starting backend-1...");
43 containers.startBackend(containers.backend1, new TestWriter[0]);
44 log.info("backend-1 started!");
46 ChatRoomInfoTo[] chatRooms = Flux
47 .range(0, NUM_CHATROOMS)
48 .flatMap(i -> createChatRoom("room-" + i))
50 .toArray(size -> new ChatRoomInfoTo[size]);
52 int port = containers.haproxy.getMappedPort(8400);
54 CompletableFuture<Void>[] testWriterFutures = new CompletableFuture[NUM_CLIENTS];
55 TestWriter[] testWriters = new TestWriter[NUM_CLIENTS];
56 for (int i = 0; i < NUM_CLIENTS; i++)
58 TestWriter testWriter = new TestWriter(
60 chatRooms[i % NUM_CHATROOMS],
62 testWriters[i] = testWriter;
63 testWriterFutures[i] = testWriter
68 TestListener testListener = new TestListener(port, chatRooms);
71 .subscribe(message -> log.info(
72 "Received message: {}",
75 log.info("Sleeping for 3 seconds...");
78 for (int i = 0; i < NUM_CLIENTS; i++)
80 testWriters[i].running = false;
81 testWriterFutures[i].join();
82 log.info("Joined TestWriter {}", testWriters[i].user);
87 .atMost(Duration.ofSeconds(30))
88 .untilAsserted(() -> assertAllSentMessagesReceived(testWriters, testListener));
91 private void assertAllSentMessagesReceived(
92 TestWriter[] testWriters,
93 TestListener testListener)
95 for (int i = 0; i < NUM_CLIENTS; i++)
97 TestWriter testWriter = testWriters[i];
98 ChatRoomInfoTo chatRoom = testWriter.chatRoom;
99 List<MessageTo> receivedMessages = testListener.receivedMessages.get(chatRoom.getId());
101 Assertions.assertThat(receivedMessages
103 .filter(message -> message.getUser().equals(testWriter.user.getName()))
104 ).containsExactlyElementsOf(testWriter.sentMessages);
108 Mono<ChatRoomInfoTo> createChatRoom(String name)
113 .contentType(MediaType.TEXT_PLAIN)
115 .accept(MediaType.APPLICATION_JSON)
116 .exchangeToMono(response ->
118 if (response.statusCode().equals(HttpStatus.OK))
120 return response.bodyToMono(ChatRoomInfoTo.class);
124 return response.createError();
133 void setUp() throws Exception
137 Integer port = containers.haproxy.getMappedPort(8400);
138 webClient = WebClient.create("http://localhost:" + port);