Test: MemberRepository Test 코드 추가

Related to: KakaoTech-BootCamp-Team-2#2

build.gradle

@@ -33,6 +33,7 @@ dependencies {
     annotationProcessor 'org.projectlombok:lombok'
     testImplementation 'org.springframework.boot:spring-boot-starter-test'
     testImplementation 'org.springframework.security:spring-security-test'
+    testImplementation 'com.h2database:h2'
     testRuntimeOnly 'org.junit.platform:junit-platform-launcher'
 
     // JWT Token Dependency

src/test/java/kaboo/kaboo_auth/repository/MemberRepositoryTest.java

@@ -2,6 +2,8 @@
 
 import static org.junit.jupiter.api.Assertions.*;
 
+import java.util.Arrays;
+import java.util.List;
 import java.util.Optional;
 
 import org.junit.jupiter.api.DisplayName;
@@ -10,6 +12,7 @@
 import org.springframework.boot.test.autoconfigure.orm.jpa.DataJpaTest;
 import org.springframework.transaction.annotation.Transactional;
 
+import kaboo.kaboo_auth.domain.Course;
 import kaboo.kaboo_auth.domain.entity.Member;
 
 @DataJpaTest
@@ -58,4 +61,66 @@ void findByUsername_Failure() {
 		// Then
 		assertEquals(result, Optional.empty());
 	}
+
+	@Test
+	@DisplayName("DB에 존재하는 classNum 찾을 때 findByClassNum method 테스트")
+	void findByClassNum_Success() {
+		// Given
+		Member member1 = Member.builder().englishName("Alice").classNum(1).build();
+		Member member2 = Member.builder().englishName("Bob").classNum(1).build();
+
+		memberRepository.save(member1);
+		memberRepository.save(member2);
+
+		List<Member> expectedMembers = Arrays.asList(member1, member2);
+
+		// When
+		List<Member> byClassNum = memberRepository.findByClassNum(1);
+
+		// Then
+		assertEquals(byClassNum.size(), 2, "리스트의 크기가 다릅니다.");
+		assertTrue(byClassNum.containsAll(expectedMembers), "리스트에 모든 멤버가 포함되어 있지 않습니다.");
+	}
+
+	@Test
+	@DisplayName("DB에 존재하지 않는 classNum 찾을 때 findByClassNum method 테스트")
+	void findByClassNum_Failure() {
+		// Given
+
+		// When
+		List<Member> byClassNum = memberRepository.findByClassNum(1);
+
+		// Then
+		assertEquals(byClassNum.size(), 0);
+	}
+
+	@Test
+	@DisplayName("findByKoreaName 성공 테스트")
+	void findByKoreaName_Success() {
+		// Given
+		Member member = Member.builder()
+				.koreaName("홍길동")
+				.classNum(1)
+				.course(Course.AI)
+				.build();
+		memberRepository.save(member);
+
+		// When
+		Optional<Member> byKoreaName = memberRepository.findByKoreaName("홍길동");
+
+		// Then
+		assertEquals(byKoreaName.get(), member);
+	}
+
+	@Test
+	@DisplayName("findByKoreaName 실패 테스트")
+	void findByKoreaName_Failure() {
+		// Given
+
+		// When
+		Optional<Member> byKoreaName = memberRepository.findByKoreaName("홍길동");
+
+		// Then
+		assertTrue(byKoreaName.isEmpty());
+	}
 }