juplo.de Git - demos/kafka/chat/blob - src/test/java/de/juplo/kafka/chat/backend/domain/ChatHomeTest.java

   1 package de.juplo.kafka.chat.backend.domain;
   2
   3 import org.junit.jupiter.api.DisplayName;
   4 import org.junit.jupiter.api.Test;
   5 import reactor.core.publisher.Mono;
   6
   7 import java.time.Clock;
   8 import java.util.UUID;
   9
  10 import static org.mockito.ArgumentMatchers.any;
  11 import static org.mockito.Mockito.mock;
  12 import static org.mockito.Mockito.when;
  13 import static pl.rzrz.assertj.reactor.Assertions.assertThat;
  14
  15
  16 public class ChatHomeTest
  17 {
  18   @Test
  19   @DisplayName("Assert chatroom is delivered, if it exists")
  20   void testGetExistingChatroom()
  21   {
  22     // Given
  23     ChatHomeService chatHomeService = mock(ChatHomeService.class);
  24     ChatRoom chatRoom = new ChatRoom(
  25         UUID.randomUUID(),
  26         "Foo",
  27         Clock.systemDefaultZone(),
  28         mock(ChatRoomService.class),
  29         8);
  30     when(chatHomeService.getChatRoom(any(UUID.class))).thenReturn(Mono.just(chatRoom));
  31     ChatHome chatHome = new ChatHome(chatHomeService);
  32
  33     // When
  34     Mono<ChatRoom> mono = chatHome.getChatRoom(chatRoom.getId());
  35
  36     // Then
  37     assertThat(mono).emitsExactly(chatRoom);
  38   }
  39
  40   @Test
  41   @DisplayName("Assert UnknownChatroomException is thrown, if chatroom does not exist")
  42   void testGetNonExistentChatroom()
  43   {
  44     // Given
  45     ChatHomeService chatHomeService = mock(ChatHomeService.class);
  46     when(chatHomeService.getChatRoom(any(UUID.class))).thenReturn(Mono.empty());
  47     ChatHome chatHome = new ChatHome(chatHomeService);
  48
  49     // When
  50     Mono<ChatRoom> mono = chatHome.getChatRoom(UUID.randomUUID());
  51
  52     // Then
  53     assertThat(mono).sendsError();
  54   }
  55 }