react-springboot : api server test (junit5)

react-springboot/server/src/test/java/com/example/book/domain/BookRepositoryUnitTest.java

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+package com.example.book.domain;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.autoconfigure.jdbc.AutoConfigureTestDatabase;
+import org.springframework.boot.test.autoconfigure.jdbc.AutoConfigureTestDatabase.Replace;
+import org.springframework.boot.test.autoconfigure.orm.jpa.DataJpaTest;
+import org.springframework.transaction.annotation.Transactional;
+
+// 단위테스트 ( DB 관련 Bean 만 IoC에 등록되면 됨 )
+
+@Transactional
+@AutoConfigureTestDatabase(replace = Replace.ANY) // Replace.ANY 가짜 DB로 테스트, Replace.NONE 실제 DB로 테스트
+@DataJpaTest // Repository 들을 spring container 에 등록해줌
+class BookRepositoryUnitTest {
+
+    @Autowired
+    private BookRepository bookRepository;
+
+}

react-springboot/server/src/test/java/com/example/book/service/BookServiceUnitTest.java

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+package com.example.book.service;
+
+import com.example.book.domain.BookRepository;
+import org.junit.jupiter.api.extension.ExtendWith;
+import org.mockito.InjectMocks;
+import org.mockito.Mock;
+import org.mockito.junit.jupiter.MockitoExtension;
+
+/**
+ * 단위테스트 ( Service 관련 Bean 만 메모리에 띄움 )
+ * BookService 는 BookRepository 에 의존적이다.
+ * 단위테스트를 위해 BookRepository 를 가짜 객체로 만들어 테스트 ( Mockito )
+ */
+
+@ExtendWith(MockitoExtension.class)
+class BookServiceUnitTest {
+
+    @InjectMocks // BookService 객체가 만들어질 때 BookServiceUnitTest 파일에 @Mock 으로 등록된 객체를 DI
+    private BookService bookService;
+
+    @Mock
+    private BookRepository bookRepository;
+}

react-springboot/server/src/test/java/com/example/book/web/BookApplicationIntegrationTests.java

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+package com.example.book.web;
+
+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.SpringBootTest.WebEnvironment;
+import org.springframework.test.web.servlet.MockMvc;
+import org.springframework.transaction.annotation.Transactional;
+
+/**
+ * 통합테스트 ( 모든 Bean 들을 IoC에 올리고 테스트 하는 것 )
+ * WebEnvironment.MOCK = 실제 톰캣이 아닌 다른 톰캣으로 테스트
+ * WebEnvironment.RANDOM_PORT = 실제 톰캣으로 테스트
+ * @AutoConfigureMockMvc = MockMvc 를 IoC에 등록
+ * @Transactional = 각 테스트 함수가 종료되면 트랜잭션을 rollback
+ *
+ */
+
+@Transactional
+@AutoConfigureMockMvc
+@SpringBootTest(webEnvironment = WebEnvironment.MOCK)
+public class BookApplicationIntegrationTests {
+
+    @Autowired
+    private MockMvc mockMvc;
+
+}

react-springboot/server/src/test/java/com/example/book/web/BookControllerUnitTest.java

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+package com.example.book.web;
+
+import org.springframework.boot.test.autoconfigure.web.servlet.WebMvcTest;
+
+// 단위테스트 ( Controller 관련 로직만 테스트 - Filter, ControllerAdvice , ... )
+
+@WebMvcTest
+class BookControllerUnitTest {
+
+}