#92 [feat] : ChatbotApplicationService 단위 테스트 코드를 작성한다

src/test/java/kusitms/backend/chatbot/application/service/ChatbotApplicationServiceTest.java

@@ -0,0 +1,96 @@
+package kusitms.backend.chatbot.application.service;
+
+import kusitms.backend.chatbot.application.dto.request.ClovaRequestDto;
+import kusitms.backend.chatbot.application.dto.response.GetClovaChatbotAnswerResponseDto;
+import kusitms.backend.chatbot.application.dto.response.GetGuideChatbotAnswerResponseDto;
+import kusitms.backend.chatbot.application.factory.ClovaRequestFactory;
+import kusitms.backend.chatbot.application.factory.MessageFactory;
+import kusitms.backend.chatbot.domain.service.ChatbotApiClient;
+import kusitms.backend.global.exception.CustomException;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+import reactor.core.publisher.Mono;
+import reactor.test.StepVerifier;
+
+import java.util.ArrayList;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.Mockito.when;
+
+class ChatbotApplicationServiceTest {
+
+    private ChatbotApplicationService service;
+
+    @Mock
+    private ChatbotApiClient chatbotApiClient;
+
+    @Mock
+    private ClovaRequestFactory clovaRequestFactory;
+
+    @Mock
+    private MessageFactory messageFactory;
+
+    @BeforeEach
+    void setUp() {
+        MockitoAnnotations.openMocks(this);
+        service = new ChatbotApplicationService(chatbotApiClient, clovaRequestFactory, messageFactory);
+    }
+
+    /**
+     * Clova 챗봇 응답을 성공적으로 가져오는 테스트
+     */
+    @Test
+    void testGetClovaChatbotAnswer_Success() {
+        // Given
+        String userMessage = "안녕하세요!";
+        ClovaRequestDto requestDto = new ClovaRequestDto(new ArrayList<>(), 0.8, 0.3, 256, 1.2);
+        GetClovaChatbotAnswerResponseDto expectedResponse = GetClovaChatbotAnswerResponseDto.of("안녕하세요!");
+
+        when(clovaRequestFactory.createClovaRequest()).thenReturn(requestDto);
+        when(chatbotApiClient.requestChatbot(any(ClovaRequestDto.class)))
+                .thenReturn(Mono.just("안녕하세요!"));
+
+        // When & Then
+        StepVerifier.create(service.getClovaChatbotAnswer(userMessage))
+                .expectNext(expectedResponse)
+                .verifyComplete();
+    }
+
+    /**
+     * 유효한 카테고리 및 질문 번호로 가이드 챗봇 응답을 성공적으로 가져오는 테스트
+     */
+    @Test
+    void testGetGuideChatbotAnswer_ValidCategory() {
+        // Given
+        String stadiumName = "lg";
+        String categoryName = "stadium";
+        int orderNumber = 1;
+
+        // When
+        GetGuideChatbotAnswerResponseDto response = service.getGuideChatbotAnswer(stadiumName, categoryName, orderNumber);
+
+        // Then
+        assertNotNull(response);
+        assertEquals(null, response.imgUrl());
+    }
+
+    /**
+     * 유효하지 않은 카테고리로 인해 CustomException이 발생하는 테스트
+     */
+    @Test
+    void testGetGuideChatbotAnswer_InvalidCategory() {
+        // Given
+        String stadiumName = "Seoul";
+        String categoryName = "invalid";
+        int orderNumber = 1;
+
+        // When & Then
+        org.junit.jupiter.api.Assertions.assertThrows(CustomException.class, () -> {
+            service.getGuideChatbotAnswer(stadiumName, categoryName, orderNumber);
+        });
+    }
+}