refactor: Pushed sharding one layer down in the architecture

[demos/kafka/chat] / src / test / java / de / juplo / kafka / chat / backend / domain / ChatHomeTest.java

diff --git a/src/test/java/de/juplo/kafka/chat/backend/domain/ChatHomeTest.java b/src/test/java/de/juplo/kafka/chat/backend/domain/ChatHomeTest.java
new file mode 100644 (file)
index 0000000..5d9dfaf
--- /dev/null
+++ b/src/test/java/de/juplo/kafka/chat/backend/domain/ChatHomeTest.java
@@ -0,0 +1,56 @@
+package de.juplo.kafka.chat.backend.domain;
+
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+import reactor.core.publisher.Mono;
+
+import java.time.Clock;
+import java.util.UUID;
+
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.when;
+import static pl.rzrz.assertj.reactor.Assertions.assertThat;
+
+
+public class ChatHomeTest
+{
+  @Test
+  @DisplayName("Assert chatroom is delivered, if it exists")
+  void testGetExistingChatroom()
+  {
+    // Given
+    ChatHomeService chatHomeService = mock(ChatHomeService.class);
+    ChatRoom chatRoom = new ChatRoom(
+        UUID.randomUUID(),
+        "Foo",
+        0,
+        Clock.systemDefaultZone(),
+        mock(ChatRoomService.class),
+        8);
+    when(chatHomeService.getChatRoom(any(UUID.class))).thenReturn(Mono.just(chatRoom));
+    ChatHome chatHome = new ChatHome(chatHomeService);
+
+    // When
+    Mono<ChatRoom> mono = chatHome.getChatRoom(chatRoom.getId());
+
+    // Then
+    assertThat(mono).emitsExactly(chatRoom);
+  }
+
+  @Test
+  @DisplayName("Assert UnknownChatroomException is thrown, if chatroom does not exist")
+  void testGetNonExistentChatroom()
+  {
+    // Given
+    ChatHomeService chatHomeService = mock(ChatHomeService.class);
+    when(chatHomeService.getChatRoom(any(UUID.class))).thenReturn(Mono.empty());
+    ChatHome chatHome = new ChatHome(chatHomeService);
+
+    // When
+    Mono<ChatRoom> mono = chatHome.getChatRoom(UUID.randomUUID());
+
+    // Then
+    assertThat(mono).sendsError();
+  }
+}