Add UserRepository

src/main/java/com/mangkyu/employment/interview/app/user/entity/UserEntity.java

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+package com.mangkyu.employment.interview.app.user.entity;
+
+import com.mangkyu.employment.interview.app.common.entity.BaseEntity;
+import com.mangkyu.employment.interview.app.quiz.enums.QuizLevel;
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+import javax.persistence.Entity;
+import javax.persistence.EnumType;
+import javax.persistence.Enumerated;
+import javax.persistence.Table;
+
+@Entity
+@Table
+@Getter
+@Builder
+@NoArgsConstructor(force = true)
+@AllArgsConstructor
+public class UserEntity extends BaseEntity {
+
+    private String email;
+
+    @Enumerated(EnumType.STRING)
+    private QuizLevel quizLevel;
+
+}

src/main/java/com/mangkyu/employment/interview/app/user/repository/UserRepository.java

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+package com.mangkyu.employment.interview.app.user.repository;
+
+import com.mangkyu.employment.interview.app.user.entity.UserEntity;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+public interface UserRepository extends JpaRepository <UserEntity, Long> {
+}

src/test/java/com/mangkyu/employment/interview/app/user/repository/UserRepositoryTest.java

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+package com.mangkyu.employment.interview.app.user.repository;
+
+import com.mangkyu.employment.interview.app.quiz.enums.QuizLevel;
+import com.mangkyu.employment.interview.app.user.entity.UserEntity;
+import org.junit.jupiter.api.Test;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.autoconfigure.orm.jpa.DataJpaTest;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+@DataJpaTest
+class UserRepositoryTest {
+
+    @Autowired
+    private UserRepository userRepository;
+
+    @Test
+    public void insertUser() {
+        // given
+        final UserEntity userEntity = UserEntity.builder()
+                .email("minkyu@test.com")
+                .quizLevel(QuizLevel.JUNIOR)
+                .build();
+
+        // when
+        final UserEntity result = userRepository.save(userEntity);
+
+        // then
+        assertThat(result.getEmail()).isEqualTo(userEntity.getEmail());
+        assertThat(result.getQuizLevel()).isEqualTo(userEntity.getQuizLevel());
+    }
+
+}