src/main/java/roomescape/auth/web/support/AuthInterceptors.kt

@@ -69,9 +69,9 @@ class AdminInterceptor(
             val token: String? = request.accessTokenCookie().value
             val memberId: Long = jwtHandler.getMemberIdFromToken(token)
             member = memberService.findById(memberId)
-        } catch (e: RoomescapeException) {
+        } catch (_: RoomescapeException) {
             response.sendRedirect("/login")
-            throw e
+            throw RoomescapeException(ErrorType.LOGIN_REQUIRED, HttpStatus.FORBIDDEN)
         }
 
         with(member) {

src/main/java/roomescape/common/dto/response/RoomescapeErrorResponse.kt

@@ -8,11 +8,4 @@ import roomescape.common.exception.ErrorType
 data class RoomescapeErrorResponse(
         val errorType: ErrorType,
         val message: String
-) {
+)
-
-    companion object {
-        @JvmStatic
-        fun of(errorType: ErrorType, message: String? = null): RoomescapeErrorResponse =
-                RoomescapeErrorResponse(errorType, message ?: errorType.description)
-    }
-}

src/main/java/roomescape/reservation/domain/Reservation.java

@@ -18,7 +18,7 @@ import jakarta.persistence.ManyToOne;
 import roomescape.common.exception.ErrorType;
 import roomescape.common.exception.RoomescapeException;
 import roomescape.member.infrastructure.persistence.Member;
-import roomescape.theme.domain.Theme;
+import roomescape.theme.infrastructure.persistence.ThemeEntity;
 
 @Entity
 public class Reservation {
@@ -35,7 +35,7 @@ public class Reservation {
 
 	@ManyToOne(fetch = FetchType.LAZY)
 	@JoinColumn(name = "theme_id", nullable = false)
-	private Theme theme;
+	private ThemeEntity theme;
 
 	@ManyToOne(fetch = FetchType.LAZY)
 	@JoinColumn(name = "member_id", nullable = false)
@@ -50,7 +50,7 @@ public class Reservation {
 	public Reservation(
 		LocalDate date,
 		ReservationTime reservationTime,
-		Theme theme,
+		ThemeEntity theme,
 		Member member,
 		ReservationStatus status
 	) {
@@ -61,7 +61,7 @@ public class Reservation {
 		Long id,
 		LocalDate date,
 		ReservationTime reservationTime,
-		Theme theme,
+		ThemeEntity theme,
 		Member member,
 		ReservationStatus status
 	) {
@@ -74,7 +74,7 @@ public class Reservation {
 		this.reservationStatus = status;
 	}
 
-	private void validateIsNull(LocalDate date, ReservationTime reservationTime, Theme theme, Member member,
+	private void validateIsNull(LocalDate date, ReservationTime reservationTime, ThemeEntity theme, Member member,
 		ReservationStatus reservationStatus) {
 		if (date == null || reservationTime == null || theme == null || member == null || reservationStatus == null) {
 			throw new RoomescapeException(ErrorType.REQUEST_DATA_BLANK, String.format("[values: %s]", this),
@@ -98,7 +98,7 @@ public class Reservation {
 		return reservationTime;
 	}
 
-	public Theme getTheme() {
+	public ThemeEntity getTheme() {
 		return theme;
 	}
 

src/main/java/roomescape/reservation/dto/response/ReservationResponse.java

@@ -8,7 +8,7 @@ import io.swagger.v3.oas.annotations.media.Schema;
 import roomescape.member.web.MemberResponse;
 import roomescape.reservation.domain.Reservation;
 import roomescape.reservation.domain.ReservationStatus;
-import roomescape.theme.dto.ThemeResponse;
+import roomescape.theme.web.ThemeResponse;
 
 @Schema(name = "예약 정보", description = "예약 저장 및 조회 응답에 사용됩니다.")
 public record ReservationResponse(

src/main/java/roomescape/reservation/service/ReservationService.java

@@ -24,8 +24,8 @@ import roomescape.reservation.dto.request.WaitingRequest;
 import roomescape.reservation.dto.response.MyReservationsResponse;
 import roomescape.reservation.dto.response.ReservationResponse;
 import roomescape.reservation.dto.response.ReservationsResponse;
-import roomescape.theme.domain.Theme;
+import roomescape.theme.infrastructure.persistence.ThemeEntity;
-import roomescape.theme.service.ThemeService;
+import roomescape.theme.business.ThemeService;
 
 @Service
 @Transactional
@@ -146,7 +146,7 @@ public class ReservationService {
 	private Reservation getReservationForSave(Long timeId, Long themeId, LocalDate date, Long memberId,
 		ReservationStatus status) {
 		ReservationTime time = reservationTimeService.findTimeById(timeId);
-		Theme theme = themeService.findThemeById(themeId);
+		ThemeEntity theme = themeService.findThemeById(themeId);
 		Member member = memberService.findById(memberId);
 
 		validateDateAndTime(date, time);

src/main/java/roomescape/theme/business/ThemeService.kt

@@ -0,0 +1,74 @@
+package roomescape.theme.business
+
+import org.springframework.data.repository.findByIdOrNull
+import org.springframework.http.HttpStatus
+import org.springframework.stereotype.Service
+import org.springframework.transaction.annotation.Transactional
+import roomescape.common.exception.ErrorType
+import roomescape.common.exception.RoomescapeException
+import roomescape.theme.infrastructure.persistence.ThemeEntity
+import roomescape.theme.infrastructure.persistence.ThemeRepository
+import roomescape.theme.web.ThemeRequest
+import roomescape.theme.web.ThemeResponse
+import roomescape.theme.web.ThemesResponse
+import roomescape.theme.web.toResponse
+import java.time.LocalDate
+
+@Service
+class ThemeService(
+        private val themeRepository: ThemeRepository
+) {
+    @Transactional(readOnly = true)
+    fun findThemeById(id: Long): ThemeEntity = themeRepository.findByIdOrNull(id)
+            ?: throw RoomescapeException(
+                    ErrorType.THEME_NOT_FOUND,
+                    "[themeId: $id]",
+                    HttpStatus.BAD_REQUEST
+            )
+
+    @Transactional(readOnly = true)
+    fun findAllThemes(): ThemesResponse = themeRepository.findAll()
+            .toResponse()
+
+
+    @Transactional(readOnly = true)
+    fun getMostReservedThemesByCount(count: Int): ThemesResponse {
+        val today = LocalDate.now()
+        val startDate = today.minusDays(7)
+        val endDate = today.minusDays(1)
+
+        return themeRepository.findTopNThemeBetweenStartDateAndEndDate(startDate, endDate, count)
+                .toResponse()
+    }
+
+    @Transactional
+    fun save(request: ThemeRequest): ThemeResponse {
+        if (themeRepository.existsByName(request.name)) {
+            throw RoomescapeException(
+                    ErrorType.THEME_DUPLICATED,
+                    "[name: ${request.name}]",
+                    HttpStatus.CONFLICT
+            )
+        }
+
+        return ThemeEntity(
+                name = request.name,
+                description = request.description,
+                thumbnail = request.thumbnail
+        ).also {
+            themeRepository.save(it)
+        }.toResponse()
+    }
+
+    @Transactional
+    fun deleteById(id: Long) {
+        if (themeRepository.isReservedTheme(id)) {
+            throw RoomescapeException(
+                    ErrorType.THEME_IS_USED_CONFLICT,
+                    "[themeId: %d]",
+                    HttpStatus.CONFLICT
+            )
+        }
+        themeRepository.deleteById(id)
+    }
+}

src/main/java/roomescape/theme/controller/ThemeController.java

@@ -1,101 +0,0 @@
-package roomescape.theme.controller;
-
-import org.springframework.http.HttpHeaders;
-import org.springframework.http.HttpStatus;
-import org.springframework.web.bind.annotation.DeleteMapping;
-import org.springframework.web.bind.annotation.GetMapping;
-import org.springframework.web.bind.annotation.PathVariable;
-import org.springframework.web.bind.annotation.PostMapping;
-import org.springframework.web.bind.annotation.RequestBody;
-import org.springframework.web.bind.annotation.RequestParam;
-import org.springframework.web.bind.annotation.ResponseStatus;
-import org.springframework.web.bind.annotation.RestController;
-
-import io.swagger.v3.oas.annotations.Operation;
-import io.swagger.v3.oas.annotations.Parameter;
-import io.swagger.v3.oas.annotations.media.Content;
-import io.swagger.v3.oas.annotations.media.Schema;
-import io.swagger.v3.oas.annotations.responses.ApiResponse;
-import io.swagger.v3.oas.annotations.responses.ApiResponses;
-import io.swagger.v3.oas.annotations.tags.Tag;
-import jakarta.servlet.http.HttpServletResponse;
-import jakarta.validation.Valid;
-import jakarta.validation.constraints.NotNull;
-import roomescape.auth.web.support.Admin;
-import roomescape.auth.web.support.LoginRequired;
-import roomescape.common.dto.response.RoomescapeApiResponse;
-import roomescape.common.dto.response.RoomescapeErrorResponse;
-import roomescape.theme.dto.ThemeRequest;
-import roomescape.theme.dto.ThemeResponse;
-import roomescape.theme.dto.ThemesResponse;
-import roomescape.theme.service.ThemeService;
-
-@RestController
-@Tag(name = "5. 테마 API", description = "테마를 조회 / 추가 / 삭제할 때 사용합니다.")
-public class ThemeController {
-
-	private final ThemeService themeService;
-
-	public ThemeController(ThemeService themeService) {
-		this.themeService = themeService;
-	}
-
-	@LoginRequired
-	@GetMapping("/themes")
-	@ResponseStatus(HttpStatus.OK)
-	@Operation(summary = "모든 테마 조회", description = "모든 테마를 조회합니다.", tags = "로그인이 필요한 API")
-	@ApiResponses({
-		@ApiResponse(responseCode = "200", description = "성공", useReturnTypeSchema = true)
-	})
-	public RoomescapeApiResponse<ThemesResponse> getAllThemes() {
-		return RoomescapeApiResponse.success(themeService.findAllThemes());
-	}
-
-	@GetMapping("/themes/most-reserved-last-week")
-	@ResponseStatus(HttpStatus.OK)
-	@Operation(summary = "가장 많이 예약된 테마 조회")
-	@ApiResponses({
-		@ApiResponse(responseCode = "200", description = "성공", useReturnTypeSchema = true)
-	})
-	public RoomescapeApiResponse<ThemesResponse> getMostReservedThemes(
-		@RequestParam(defaultValue = "10") @Parameter(description = "최대로 조회할 테마 갯수") int count
-	) {
-		return RoomescapeApiResponse.success(themeService.getMostReservedThemesByCount(count));
-	}
-
-	@Admin
-	@PostMapping("/themes")
-	@ResponseStatus(HttpStatus.CREATED)
-	@Operation(summary = "테마 추가", tags = "관리자 로그인이 필요한 API")
-	@ApiResponses({
-		@ApiResponse(responseCode = "201", description = "성공", useReturnTypeSchema = true),
-		@ApiResponse(responseCode = "409", description = "같은 이름의 테마를 추가할 수 없습니다.",
-			content = @Content(schema = @Schema(implementation = RoomescapeErrorResponse.class)))
-	})
-	public RoomescapeApiResponse<ThemeResponse> saveTheme(
-		@Valid @RequestBody ThemeRequest request,
-		HttpServletResponse response
-	) {
-		ThemeResponse themeResponse = themeService.addTheme(request);
-		response.setHeader(HttpHeaders.LOCATION, "/themes/" + themeResponse.id());
-
-		return RoomescapeApiResponse.success(themeResponse);
-	}
-
-	@Admin
-	@DeleteMapping("/themes/{id}")
-	@ResponseStatus(HttpStatus.NO_CONTENT)
-	@Operation(summary = "테마 삭제", tags = "관리자 로그인이 필요한 API")
-	@ApiResponses({
-		@ApiResponse(responseCode = "204", description = "성공", useReturnTypeSchema = true),
-		@ApiResponse(responseCode = "409", description = "예약된 테마는 삭제할 수 없습니다.",
-			content = @Content(schema = @Schema(implementation = RoomescapeErrorResponse.class)))
-	})
-	public RoomescapeApiResponse<Void> removeTheme(
-		@NotNull(message = "themeId는 null일 수 없습니다.") @PathVariable Long id
-	) {
-		themeService.removeThemeById(id);
-
-		return RoomescapeApiResponse.success();
-	}
-}

src/main/java/roomescape/theme/docs/ThemeAPI.kt

@@ -0,0 +1,51 @@
+package roomescape.theme.docs
+
+import io.swagger.v3.oas.annotations.Operation
+import io.swagger.v3.oas.annotations.Parameter
+import io.swagger.v3.oas.annotations.responses.ApiResponse
+import io.swagger.v3.oas.annotations.responses.ApiResponses
+import io.swagger.v3.oas.annotations.tags.Tag
+import jakarta.validation.Valid
+import org.springframework.http.ResponseEntity
+import org.springframework.web.bind.annotation.PathVariable
+import org.springframework.web.bind.annotation.RequestBody
+import org.springframework.web.bind.annotation.RequestParam
+import roomescape.auth.web.support.Admin
+import roomescape.auth.web.support.LoginRequired
+import roomescape.common.dto.response.CommonApiResponse
+import roomescape.theme.web.ThemeRequest
+import roomescape.theme.web.ThemeResponse
+import roomescape.theme.web.ThemesResponse
+
+@Tag(name = "5. 테마 API", description = "테마를 조회 / 추가 / 삭제할 때 사용합니다.")
+interface ThemeAPI {
+
+    @LoginRequired
+    @Operation(summary = "모든 테마 조회", description = "모든 테마를 조회합니다.", tags = ["로그인이 필요한 API"])
+    @ApiResponses(ApiResponse(responseCode = "200", description = "성공", useReturnTypeSchema = true))
+    fun getAllThemes(): ResponseEntity<CommonApiResponse<ThemesResponse>>
+
+    @Operation(summary = "가장 많이 예약된 테마 조회")
+    @ApiResponses(ApiResponse(responseCode = "200", description = "성공", useReturnTypeSchema = true))
+    fun getMostReservedThemes(
+            @RequestParam(defaultValue = "10") @Parameter(description = "최대로 조회할 테마 갯수") count: Int
+    ): ResponseEntity<CommonApiResponse<ThemesResponse>>
+
+    @Admin
+    @Operation(summary = "테마 추가", tags = ["관리자 로그인이 필요한 API"])
+    @ApiResponses(
+            ApiResponse(responseCode = "201", description = "성공", useReturnTypeSchema = true),
+    )
+    fun saveTheme(
+            @Valid @RequestBody request: ThemeRequest,
+    ): ResponseEntity<CommonApiResponse<ThemeResponse>>
+
+    @Admin
+    @Operation(summary = "테마 삭제", tags = ["관리자 로그인이 필요한 API"])
+    @ApiResponses(
+            ApiResponse(responseCode = "204", description = "성공", useReturnTypeSchema = true),
+    )
+    fun removeTheme(
+            @PathVariable id: Long
+    ): ResponseEntity<CommonApiResponse<Unit>>
+}

src/main/java/roomescape/theme/domain/Theme.java

@@ -1,65 +0,0 @@
-package roomescape.theme.domain;
-
-import jakarta.persistence.Entity;
-import jakarta.persistence.GeneratedValue;
-import jakarta.persistence.GenerationType;
-import jakarta.persistence.Id;
-
-@Entity
-public class Theme {
-
-	@Id
-	@GeneratedValue(strategy = GenerationType.IDENTITY)
-	private Long id;
-
-	private String name;
-
-	private String description;
-
-	private String thumbnail;
-
-	protected Theme() {
-	}
-
-	public Theme(String name, String description, String thumbnail) {
-		this(null, name, description, thumbnail);
-	}
-
-	public Theme(
-		Long id,
-		String name,
-		String description,
-		String thumbnail
-	) {
-		this.id = id;
-		this.name = name;
-		this.description = description;
-		this.thumbnail = thumbnail;
-	}
-
-	public Long getId() {
-		return id;
-	}
-
-	public String getName() {
-		return name;
-	}
-
-	public String getDescription() {
-		return description;
-	}
-
-	public String getThumbnail() {
-		return thumbnail;
-	}
-
-	@Override
-	public String toString() {
-		return "Theme{" +
-			"id=" + id +
-			", name=" + name +
-			", description=" + description +
-			", thumbnail=" + thumbnail +
-			'}';
-	}
-}

src/main/java/roomescape/theme/domain/repository/ThemeRepository.java

@@ -1,34 +0,0 @@
-package roomescape.theme.domain.repository;
-
-import java.time.LocalDate;
-import java.util.List;
-
-import org.springframework.data.jpa.repository.JpaRepository;
-import org.springframework.data.jpa.repository.Query;
-
-import roomescape.theme.domain.Theme;
-
-public interface ThemeRepository extends JpaRepository<Theme, Long> {
-
-	@Query(value = """
-		SELECT t
-		    FROM Theme t
-		    RIGHT JOIN Reservation r ON t.id = r.theme.id
-		    WHERE r.date BETWEEN :startDate AND :endDate
-		    GROUP BY r.theme.id
-		    ORDER BY COUNT(r.theme.id) DESC, t.id ASC
-		    LIMIT :limit
-		""")
-	List<Theme> findTopNThemeBetweenStartDateAndEndDate(LocalDate startDate, LocalDate endDate, int limit);
-
-	boolean existsByName(String name);
-
-	@Query(value = """
-		SELECT EXISTS(
-		    SELECT 1
-		    FROM Reservation r
-		    WHERE r.theme.id = :id
-		)
-		""")
-	boolean isReservedTheme(Long id);
-}

src/main/java/roomescape/theme/dto/ThemeRequest.java

@@ -1,21 +0,0 @@
-package roomescape.theme.dto;
-
-import io.swagger.v3.oas.annotations.media.Schema;
-import jakarta.validation.constraints.NotBlank;
-import jakarta.validation.constraints.Size;
-
-@Schema(name = "테마 저장 요청", description = "테마 정보를 저장할 때 사용합니다.")
-public record ThemeRequest(
-	@NotBlank(message = "테마의 이름은 null 또는 공백일 수 없습니다.")
-	@Size(min = 1, max = 20, message = "테마의 이름은 1~20글자 사이여야 합니다.")
-	@Schema(description = "필수 값이며, 최대 20글자까지 입력 가능합니다.")
-	String name,
-	@NotBlank(message = "테마의 설명은 null 또는 공백일 수 없습니다.")
-	@Size(min = 1, max = 100, message = "테마의 설명은 1~100글자 사이여야 합니다.")
-	@Schema(description = "필수 값이며, 최대 100글자까지 입력 가능합니다.")
-	String description,
-	@NotBlank(message = "테마의 쌈네일은 null 또는 공백일 수 없습니다.")
-	@Schema(description = "필수 값이며, 썸네일 이미지 URL 을 입력해주세요.")
-	String thumbnail
-) {
-}

src/main/java/roomescape/theme/dto/ThemeResponse.java

@@ -1,21 +0,0 @@
-package roomescape.theme.dto;
-
-import io.swagger.v3.oas.annotations.media.Schema;
-import roomescape.theme.domain.Theme;
-
-@Schema(name = "테마 정보", description = "테마 추가 및 조회 응답에 사용됩니다.")
-public record ThemeResponse(
-	@Schema(description = "테마 번호. 테마를 식별할 때 사용합니다.")
-	Long id,
-	@Schema(description = "테마 이름. 중복을 허용하지 않습니다.")
-	String name,
-	@Schema(description = "테마 설명")
-	String description,
-	@Schema(description = "테마 썸네일 이미지 URL")
-	String thumbnail
-) {
-
-	public static ThemeResponse from(Theme theme) {
-		return new ThemeResponse(theme.getId(), theme.getName(), theme.getDescription(), theme.getThumbnail());
-	}
-}

src/main/java/roomescape/theme/dto/ThemesResponse.java

@@ -1,11 +0,0 @@
-package roomescape.theme.dto;
-
-import java.util.List;
-
-import io.swagger.v3.oas.annotations.media.Schema;
-
-@Schema(name = "테마 목록 조회 응답", description = "모든 테마 목록 조회 응답시 사용됩니다.")
-public record ThemesResponse(
-	@Schema(description = "모든 테마 목록") List<ThemeResponse> themes
-) {
-}

src/main/java/roomescape/theme/infrastructure/persistence/ThemeEntity.kt

@@ -0,0 +1,15 @@
+package roomescape.theme.infrastructure.persistence
+
+import jakarta.persistence.*
+
+@Entity
+@Table(name = "theme")
+class ThemeEntity(
+        @Id
+        @GeneratedValue(strategy = GenerationType.IDENTITY)
+        var id: Long? = null,
+
+        var name: String,
+        var description: String,
+        var thumbnail: String
+)

src/main/java/roomescape/theme/infrastructure/persistence/ThemeRepository.kt

@@ -0,0 +1,32 @@
+package roomescape.theme.infrastructure.persistence
+
+import org.springframework.data.jpa.repository.JpaRepository
+import org.springframework.data.jpa.repository.Query
+import java.time.LocalDate
+
+interface ThemeRepository : JpaRepository<ThemeEntity, Long> {
+
+    @Query(value = """
+		SELECT t
+		    FROM ThemeEntity t
+		    RIGHT JOIN Reservation r ON t.id = r.theme.id
+		    WHERE r.date BETWEEN :startDate AND :endDate
+		    GROUP BY r.theme.id
+		    ORDER BY COUNT(r.theme.id) DESC, t.id ASC
+		    LIMIT :limit
+		
+		"""
+    )
+    fun findTopNThemeBetweenStartDateAndEndDate(startDate: LocalDate, endDate: LocalDate, limit: Int): List<ThemeEntity>
+
+    fun existsByName(name: String): Boolean
+
+    @Query(value = """
+		SELECT EXISTS(
+		    SELECT 1
+		    FROM Reservation r
+		    WHERE r.theme.id = :id
+		)
+		""")
+    fun isReservedTheme(id: Long): Boolean
+}

src/main/java/roomescape/theme/service/ThemeService.java

@@ -1,82 +0,0 @@
-package roomescape.theme.service;
-
-import java.time.LocalDate;
-import java.util.List;
-
-import org.springframework.http.HttpStatus;
-import org.springframework.stereotype.Service;
-import org.springframework.transaction.annotation.Transactional;
-
-import roomescape.common.exception.ErrorType;
-import roomescape.common.exception.RoomescapeException;
-import roomescape.reservation.domain.repository.ReservationRepository;
-import roomescape.theme.domain.Theme;
-import roomescape.theme.domain.repository.ThemeRepository;
-import roomescape.theme.dto.ThemeRequest;
-import roomescape.theme.dto.ThemeResponse;
-import roomescape.theme.dto.ThemesResponse;
-
-@Service
-@Transactional
-public class ThemeService {
-
-	private final ThemeRepository themeRepository;
-
-	public ThemeService(ThemeRepository themeRepository) {
-		this.themeRepository = themeRepository;
-	}
-
-	@Transactional(readOnly = true)
-	public Theme findThemeById(Long id) {
-		return themeRepository.findById(id)
-			.orElseThrow(() -> new RoomescapeException(ErrorType.THEME_NOT_FOUND,
-				String.format("[themeId: %d]", id), HttpStatus.BAD_REQUEST));
-	}
-
-	@Transactional(readOnly = true)
-	public ThemesResponse findAllThemes() {
-		List<ThemeResponse> response = themeRepository.findAll()
-			.stream()
-			.map(ThemeResponse::from)
-			.toList();
-
-		return new ThemesResponse(response);
-	}
-
-	@Transactional(readOnly = true)
-	public ThemesResponse getMostReservedThemesByCount(int count) {
-		LocalDate today = LocalDate.now();
-		LocalDate startDate = today.minusDays(7);
-		LocalDate endDate = today.minusDays(1);
-
-		List<ThemeResponse> response = themeRepository.findTopNThemeBetweenStartDateAndEndDate(startDate, endDate,
-				count)
-			.stream()
-			.map(ThemeResponse::from)
-			.toList();
-
-		return new ThemesResponse(response);
-	}
-
-	public ThemeResponse addTheme(ThemeRequest request) {
-		validateIsSameThemeNameExist(request.name());
-		Theme theme = themeRepository.save(new Theme(request.name(), request.description(), request.thumbnail()));
-
-		return ThemeResponse.from(theme);
-	}
-
-	private void validateIsSameThemeNameExist(String name) {
-		if (themeRepository.existsByName(name)) {
-			throw new RoomescapeException(ErrorType.THEME_DUPLICATED,
-				String.format("[name: %s]", name), HttpStatus.CONFLICT);
-		}
-	}
-
-	public void removeThemeById(Long id) {
-		if (themeRepository.isReservedTheme(id)) {
-			throw new RoomescapeException(ErrorType.THEME_IS_USED_CONFLICT,
-				String.format("[themeId: %d]", id), HttpStatus.CONFLICT);
-		}
-		themeRepository.deleteById(id);
-	}
-}

src/main/java/roomescape/theme/web/ThemeController.kt

@@ -0,0 +1,51 @@
+package roomescape.theme.web
+
+import io.swagger.v3.oas.annotations.Parameter
+import jakarta.validation.Valid
+import org.springframework.http.ResponseEntity
+import org.springframework.web.bind.annotation.*
+import roomescape.common.dto.response.CommonApiResponse
+import roomescape.theme.business.ThemeService
+import roomescape.theme.docs.ThemeAPI
+import java.net.URI
+
+@RestController
+class ThemeController(
+        private val themeService: ThemeService
+) : ThemeAPI {
+
+    @GetMapping("/themes")
+    override fun getAllThemes(): ResponseEntity<CommonApiResponse<ThemesResponse>> {
+        val response: ThemesResponse = themeService.findAllThemes()
+
+        return ResponseEntity.ok(CommonApiResponse(response))
+    }
+
+    @GetMapping("/themes/most-reserved-last-week")
+    override fun getMostReservedThemes(
+            @RequestParam(defaultValue = "10") @Parameter(description = "최대로 조회할 테마 갯수") count: Int
+    ): ResponseEntity<CommonApiResponse<ThemesResponse>> {
+        val response: ThemesResponse = themeService.getMostReservedThemesByCount(count)
+
+        return ResponseEntity.ok(CommonApiResponse(response))
+    }
+
+    @PostMapping("/themes")
+    override fun saveTheme(
+            @RequestBody @Valid request: ThemeRequest
+    ): ResponseEntity<CommonApiResponse<ThemeResponse>> {
+        val themeResponse: ThemeResponse = themeService.save(request)
+
+        return ResponseEntity.created(URI.create("/themes/${themeResponse.id}"))
+                .body(CommonApiResponse(themeResponse))
+    }
+
+    @DeleteMapping("/themes/{id}")
+    override fun removeTheme(
+            @PathVariable id: Long
+    ): ResponseEntity<CommonApiResponse<Unit>> {
+        themeService.deleteById(id)
+
+        return ResponseEntity.noContent().build()
+    }
+}

src/main/java/roomescape/theme/web/ThemeDTO.kt

@@ -0,0 +1,68 @@
+package roomescape.theme.web
+
+import io.swagger.v3.oas.annotations.media.Schema
+import jakarta.validation.constraints.NotBlank
+import jakarta.validation.constraints.Size
+import org.hibernate.validator.constraints.URL
+import roomescape.theme.infrastructure.persistence.ThemeEntity
+
+@Schema(name = "테마 저장 요청", description = "테마 정보를 저장할 때 사용합니다.")
+@JvmRecord
+data class ThemeRequest(
+        @field:Schema(description = "필수 값이며, 최대 20글자까지 입력 가능합니다.")
+        @NotBlank
+        @Size(max = 20, message = "테마의 이름은 1~20글자 사이여야 합니다.")
+        val name: String,
+
+        @field:Schema(description = "필수 값이며, 최대 100글자까지 입력 가능합니다.")
+        @NotBlank
+        @Size(max = 100, message = "테마의 설명은 1~100글자 사이여야 합니다.")
+        val description: String,
+
+        @field:Schema(description = "필수 값이며, 썸네일 이미지 URL 을 입력해주세요.")
+        @NotBlank
+        @URL
+        val thumbnail: String
+)
+
+@Schema(name = "테마 정보", description = "테마 추가 및 조회 응답에 사용됩니다.")
+@JvmRecord
+data class ThemeResponse(
+        @field:Schema(description = "테마 번호. 테마를 식별할 때 사용합니다.")
+        val id: Long,
+
+        @field:Schema(description = "테마 이름. 중복을 허용하지 않습니다.")
+        val name: String,
+
+        @field:Schema(description = "테마 설명")
+        val description: String,
+
+        @field:Schema(description = "테마 썸네일 이미지 URL")
+        val thumbnail: String
+) {
+    companion object {
+        @JvmStatic
+        fun from(themeEntity: ThemeEntity): ThemeResponse {
+            return ThemeResponse(themeEntity.id!!, themeEntity.name, themeEntity.description, themeEntity.thumbnail)
+        }
+    }
+}
+
+fun ThemeEntity.toResponse(): ThemeResponse = ThemeResponse(
+        id = this.id!!,
+        name = this.name,
+        description = this.description,
+        thumbnail = this.thumbnail
+)
+
+
+@Schema(name = "테마 목록 조회 응답", description = "모든 테마 목록 조회 응답시 사용됩니다.")
+@JvmRecord
+data class ThemesResponse(
+        @field:Schema(description = "모든 테마 목록")
+        val themes: List<ThemeResponse>
+)
+
+fun List<ThemeEntity>.toResponse(): ThemesResponse = ThemesResponse(
+        themes = this.map { it.toResponse()}
+)

src/test/java/roomescape/payment/business/PaymentServiceTest.java

@@ -27,8 +27,8 @@ import roomescape.reservation.domain.ReservationStatus;
 import roomescape.reservation.domain.ReservationTime;
 import roomescape.reservation.domain.repository.ReservationRepository;
 import roomescape.reservation.domain.repository.ReservationTimeRepository;
-import roomescape.theme.domain.Theme;
+import roomescape.theme.infrastructure.persistence.ThemeEntity;
-import roomescape.theme.domain.repository.ThemeRepository;
+import roomescape.theme.infrastructure.persistence.ThemeRepository;
 
 @SpringBootTest
 @Sql(scripts = "/truncate.sql", executionPhase = ExecutionPhase.BEFORE_TEST_METHOD)
@@ -57,7 +57,7 @@ class PaymentServiceTest {
 		LocalDate date = localDateTime.toLocalDate();
 		ReservationTime time = reservationTimeRepository.save(new ReservationTime(localDateTime.toLocalTime()));
 		Member member = memberRepository.save(new Member(null, "member", "email@email.com", "password", Role.MEMBER));
-		Theme theme = themeRepository.save(new Theme("name", "desc", "thumbnail"));
+		ThemeEntity theme = themeRepository.save(new ThemeEntity(null, "name", "desc", "thumbnail"));
 		Reservation reservation = reservationRepository.save(new Reservation(date, time, theme, member,
 			ReservationStatus.CONFIRMED));
 
@@ -79,7 +79,7 @@ class PaymentServiceTest {
 		LocalDate date = localDateTime.toLocalDate();
 		ReservationTime time = reservationTimeRepository.save(new ReservationTime(localDateTime.toLocalTime()));
 		Member member = memberRepository.save(new Member(null, "member", "email@email.com", "password", Role.MEMBER));
-		Theme theme = themeRepository.save(new Theme("name", "desc", "thumbnail"));
+		ThemeEntity theme = themeRepository.save(new ThemeEntity(null, "name", "desc", "thumbnail"));
 		Reservation reservation = reservationRepository.save(new Reservation(date, time, theme, member,
 			ReservationStatus.CONFIRMED));
 
@@ -116,7 +116,7 @@ class PaymentServiceTest {
 		LocalDate date = localDateTime.toLocalDate();
 		ReservationTime time = reservationTimeRepository.save(new ReservationTime(localDateTime.toLocalTime()));
 		Member member = memberRepository.save(new Member(null, "member", "email@email.com", "password", Role.MEMBER));
-		Theme theme = themeRepository.save(new Theme("name", "desc", "thumbnail"));
+		ThemeEntity theme = themeRepository.save(new ThemeEntity(null, "name", "desc", "thumbnail"));
 		Reservation reservation = reservationRepository.save(new Reservation(date, time, theme, member,
 			ReservationStatus.CONFIRMED));
 

src/test/java/roomescape/reservation/controller/ReservationControllerTest.java

@@ -2,7 +2,6 @@ package roomescape.reservation.controller;
 
 import static org.assertj.core.api.Assertions.*;
 import static org.hamcrest.Matchers.*;
-import static org.mockito.ArgumentMatchers.*;
 import static org.mockito.ArgumentMatchers.any;
 import static org.mockito.Mockito.*;
 
@@ -12,7 +11,6 @@ import java.time.LocalTime;
 import java.time.OffsetDateTime;
 import java.time.ZoneOffset;
 import java.util.Map;
-import java.util.Optional;
 import java.util.stream.Stream;
 
 import org.junit.jupiter.api.BeforeEach;
@@ -51,8 +49,8 @@ import roomescape.reservation.domain.repository.ReservationTimeRepository;
 import roomescape.reservation.dto.request.AdminReservationRequest;
 import roomescape.reservation.dto.request.ReservationRequest;
 import roomescape.reservation.dto.request.WaitingRequest;
-import roomescape.theme.domain.Theme;
+import roomescape.theme.infrastructure.persistence.ThemeEntity;
-import roomescape.theme.domain.repository.ThemeRepository;
+import roomescape.theme.infrastructure.persistence.ThemeRepository;
 
 @SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)
 @Sql(scripts = "/truncate.sql", executionPhase = ExecutionPhase.BEFORE_TEST_METHOD)
@@ -91,7 +89,7 @@ public class ReservationControllerTest {
 		LocalDate date = LocalDate.now().plusDays(1L);
 
 		reservationTimeRepository.save(new ReservationTime(time));
-		themeRepository.save(new Theme("테마명", "설명", "썸네일URL"));
+		themeRepository.save(new ThemeEntity(null, "테마명", "설명", "썸네일URL"));
 
 		Map<String, String> reservationParams = Map.of(
 			"date", date.toString(),
@@ -126,7 +124,7 @@ public class ReservationControllerTest {
 		String accessTokenCookie = getAccessTokenCookieByLogin("email@email.com", "password");
 
 		ReservationTime reservationTime = reservationTimeRepository.save(new ReservationTime(LocalTime.of(17, 30)));
-		Theme theme = themeRepository.save(new Theme("테마명", "설명", "썸네일URL"));
+		ThemeEntity theme = themeRepository.save(new ThemeEntity(null, "테마명", "설명", "썸네일URL"));
 		Member member1 = memberRepository.save(new Member(null, "name1", "email1r@email.com", "password", Role.MEMBER));
 
 		// when
@@ -154,7 +152,7 @@ public class ReservationControllerTest {
 		String accessTokenCookie = getAccessTokenCookieByLogin("email@email.com", "password");
 
 		ReservationTime reservationTime = reservationTimeRepository.save(new ReservationTime(LocalTime.of(17, 30)));
-		Theme theme = themeRepository.save(new Theme("테마명", "설명", "썸네일URL"));
+		ThemeEntity theme = themeRepository.save(new ThemeEntity(null, "테마명", "설명", "썸네일URL"));
 		Member waitingMember = memberRepository.save(
 			new Member(null, "name1", "email1r@email.com", "password", Role.MEMBER));
 
@@ -181,7 +179,7 @@ public class ReservationControllerTest {
 		String accessTokenCookie = getAdminAccessTokenCookieByLogin("admin@admin.com", "12341234");
 
 		ReservationTime reservationTime = reservationTimeRepository.save(new ReservationTime(LocalTime.of(17, 30)));
-		Theme theme = themeRepository.save(new Theme("테마명", "설명", "썸네일URL"));
+		ThemeEntity theme = themeRepository.save(new ThemeEntity(null, "테마명", "설명", "썸네일URL"));
 		Member member = memberRepository.save(new Member(null, "name", "email@email.com", "password", Role.MEMBER));
 
 		// when
@@ -210,7 +208,7 @@ public class ReservationControllerTest {
 		String accessTokenCookie = getAccessTokenCookieByLogin(member.getEmail(), member.getPassword());
 
 		ReservationTime reservationTime = reservationTimeRepository.save(new ReservationTime(LocalTime.of(17, 30)));
-		Theme theme = themeRepository.save(new Theme("테마명", "설명", "썸네일URL"));
+		ThemeEntity theme = themeRepository.save(new ThemeEntity(null, "테마명", "설명", "썸네일URL"));
 		Reservation reservation = reservationRepository.save(
 			new Reservation(LocalDate.now(), reservationTime, theme, member, ReservationStatus.CONFIRMED));
 
@@ -230,7 +228,7 @@ public class ReservationControllerTest {
 		String adminTokenCookie = getAdminAccessTokenCookieByLogin("admin@email.com", "password");
 
 		ReservationTime reservationTime = reservationTimeRepository.save(new ReservationTime(LocalTime.of(17, 30)));
-		Theme theme = themeRepository.save(new Theme("테마명", "설명", "썸네일URL"));
+		ThemeEntity theme = themeRepository.save(new ThemeEntity(null, "테마명", "설명", "썸네일URL"));
 		Member confirmedMember = memberRepository.save(
 			new Member(null, "name1", "email@email.com", "password", Role.MEMBER));
 		Member waitingMember = memberRepository.save(
@@ -258,7 +256,7 @@ public class ReservationControllerTest {
 		String accessTokenCookie = getAccessTokenCookieByLogin(member.getEmail(), member.getPassword());
 
 		ReservationTime reservationTime = reservationTimeRepository.save(new ReservationTime(LocalTime.of(17, 30)));
-		Theme theme = themeRepository.save(new Theme("테마명", "설명", "썸네일URL"));
+		ThemeEntity theme = themeRepository.save(new ThemeEntity(null, "테마명", "설명", "썸네일URL"));
 		Member anotherMember = memberRepository.save(
 			new Member(null, "name", "email@email.com", "password", Role.MEMBER));
 
@@ -339,7 +337,7 @@ public class ReservationControllerTest {
 	void getAllReservations(String requestURI, String responseFieldName, int expectedSize) {
 		// given
 		LocalDate date = LocalDate.now().plusDays(1);
-		Theme theme = themeRepository.save(new Theme("테마명", "설명", "썸네일URL"));
+		ThemeEntity theme = themeRepository.save(new ThemeEntity(null, "테마명", "설명", "썸네일URL"));
 		ReservationTime time = reservationTimeRepository.save(new ReservationTime(LocalTime.of(17, 30)));
 		ReservationTime time1 = reservationTimeRepository.save(new ReservationTime(LocalTime.of(18, 30)));
 		ReservationTime time2 = reservationTimeRepository.save(new ReservationTime(LocalTime.of(19, 30)));
@@ -368,7 +366,7 @@ public class ReservationControllerTest {
 	void removeNotPaidReservation() {
 		// given
 		LocalDate date = LocalDate.now().plusDays(1);
-		Theme theme = themeRepository.save(new Theme("테마명", "설명", "썸네일URL"));
+		ThemeEntity theme = themeRepository.save(new ThemeEntity(null, "테마명", "설명", "썸네일URL"));
 		ReservationTime time = reservationTimeRepository.save(new ReservationTime(LocalTime.of(17, 30)));
 		String accessToken = getAdminAccessTokenCookieByLogin("admin@email.com", "password");
 
@@ -392,7 +390,7 @@ public class ReservationControllerTest {
 		// given
 		String accessToken = getAdminAccessTokenCookieByLogin("admin@email.com", "password");
 		LocalDate date = LocalDate.now().plusDays(1);
-		Theme theme = themeRepository.save(new Theme("테마명", "설명", "썸네일URL"));
+		ThemeEntity theme = themeRepository.save(new ThemeEntity(null, "테마명", "설명", "썸네일URL"));
 		ReservationTime time = reservationTimeRepository.save(new ReservationTime(LocalTime.of(17, 30)));
 		Member member = memberRepository.save(new Member(null, "name", "email@email.com", "password", Role.MEMBER));
 
@@ -423,7 +421,7 @@ public class ReservationControllerTest {
 		LocalDateTime localDateTime = LocalDateTime.now().minusHours(1L).withNano(0);
 		LocalDate date = localDateTime.toLocalDate();
 		ReservationTime time = reservationTimeRepository.save(new ReservationTime(localDateTime.toLocalTime()));
-		Theme theme = themeRepository.save(new Theme("테마명", "설명", "썸네일URL"));
+		ThemeEntity theme = themeRepository.save(new ThemeEntity(null, "테마명", "설명", "썸네일URL"));
 		Member member = memberRepository.save(new Member(null, "name", "email@email.com", "password", Role.MEMBER));
 		String accessToken = getAccessTokenCookieByLogin(member.getEmail(), member.getPassword());
 
@@ -516,7 +514,7 @@ public class ReservationControllerTest {
 		LocalDateTime localDateTime = LocalDateTime.now().plusDays(1L).withNano(0);
 		LocalDate date = localDateTime.toLocalDate();
 		ReservationTime time = reservationTimeRepository.save(new ReservationTime(localDateTime.toLocalTime()));
-		Theme theme = themeRepository.save(new Theme("테마명", "설명", "썸네일URL"));
+		ThemeEntity theme = themeRepository.save(new ThemeEntity(null, "테마명", "설명", "썸네일URL"));
 		Member member = memberRepository.save(new Member(null, "name", "email@email.com", "password", Role.MEMBER));
 		Member member1 = memberRepository.save(new Member(null, "name1", "email1@email.com", "password", Role.MEMBER));
 
@@ -542,7 +540,7 @@ public class ReservationControllerTest {
 		LocalDateTime localDateTime = LocalDateTime.now().plusHours(1L);
 		LocalDate date = localDateTime.toLocalDate();
 		ReservationTime time = reservationTimeRepository.save(new ReservationTime(localDateTime.toLocalTime()));
-		Theme theme = themeRepository.save(new Theme("테마명", "설명", "썸네일URL"));
+		ThemeEntity theme = themeRepository.save(new ThemeEntity(null, "테마명", "설명", "썸네일URL"));
 		Member member = memberRepository.save(new Member(null, "name", "email@email.com", "password", Role.MEMBER));
 
 		String accessToken = getAdminAccessTokenCookieByLogin("admin@email.com", "password");
@@ -587,7 +585,7 @@ public class ReservationControllerTest {
 		LocalDateTime localDateTime = LocalDateTime.now().plusDays(1L).withNano(0);
 		LocalDate date = localDateTime.toLocalDate();
 		ReservationTime time = reservationTimeRepository.save(new ReservationTime(localDateTime.toLocalTime()));
-		Theme theme = themeRepository.save(new Theme("테마명", "설명", "썸네일URL"));
+		ThemeEntity theme = themeRepository.save(new ThemeEntity(null, "테마명", "설명", "썸네일URL"));
 		Member member = memberRepository.save(new Member(null, "name", "email@email.com", "password", Role.MEMBER));
 
 		String adminAccessToken = getAdminAccessTokenCookieByLogin("admin@email.com", "password");

src/test/java/roomescape/reservation/controller/ReservationTimeControllerTest.java

@@ -29,8 +29,8 @@ import roomescape.reservation.domain.ReservationStatus;
 import roomescape.reservation.domain.ReservationTime;
 import roomescape.reservation.domain.repository.ReservationRepository;
 import roomescape.reservation.domain.repository.ReservationTimeRepository;
-import roomescape.theme.domain.Theme;
+import roomescape.theme.infrastructure.persistence.ThemeEntity;
-import roomescape.theme.domain.repository.ThemeRepository;
+import roomescape.theme.infrastructure.persistence.ThemeRepository;
 
 @SpringBootTest(webEnvironment = WebEnvironment.RANDOM_PORT)
 @Sql(scripts = "/truncate.sql", executionPhase = ExecutionPhase.BEFORE_TEST_METHOD)
@@ -224,7 +224,7 @@ public class ReservationTimeControllerTest {
 		ReservationTime reservationTime1 = reservationTimeRepository.save(new ReservationTime(LocalTime.of(17, 0)));
 		ReservationTime reservationTime2 = reservationTimeRepository.save(new ReservationTime(LocalTime.of(17, 30)));
 		ReservationTime reservationTime3 = reservationTimeRepository.save(new ReservationTime(LocalTime.of(18, 30)));
-		Theme theme = themeRepository.save(new Theme("테마명1", "설명", "썸네일URL"));
+		ThemeEntity theme = themeRepository.save(new ThemeEntity(null, "테마명1", "설명", "썸네일URL"));
 		Member member = memberRepository.save(new Member(null, "name", "email@email.com", "password", Role.MEMBER));
 
 		reservationRepository.save(

src/test/java/roomescape/reservation/domain/ReservationTest.java

@@ -13,14 +13,14 @@ import org.junit.jupiter.params.provider.MethodSource;
 import roomescape.member.infrastructure.persistence.Member;
 import roomescape.member.infrastructure.persistence.Role;
 import roomescape.common.exception.RoomescapeException;
-import roomescape.theme.domain.Theme;
+import roomescape.theme.infrastructure.persistence.ThemeEntity;
 
 public class ReservationTest {
 
 	@ParameterizedTest
 	@MethodSource("validateConstructorParameterBlankSource")
 	@DisplayName("객체 생성 시, null 또는 공백이 존재하면 예외를 발생한다.")
-	void validateConstructorParameterBlank(LocalDate date, ReservationTime reservationTime, Theme theme,
+	void validateConstructorParameterBlank(LocalDate date, ReservationTime reservationTime, ThemeEntity theme,
 		Member member) {
 
 		// when & then
@@ -33,12 +33,12 @@ public class ReservationTest {
 		return Stream.of(
 			Arguments.of(null,
 				new ReservationTime(LocalTime.now().plusHours(1)),
-				new Theme("테마명", "설명", "썸네일URI"),
+				new ThemeEntity(null, "테마명", "설명", "썸네일URI"),
 				new Member(null, "name", "email@email.com", "password", Role.MEMBER)),
 			Arguments.of(
 				LocalDate.now(),
 				null,
-				new Theme("테마명", "설명", "썸네일URI"),
+				new ThemeEntity(null, "테마명", "설명", "썸네일URI"),
 				new Member(null, "name", "email@email.com", "password", Role.MEMBER)),
 			Arguments.of(
 				LocalDate.now(),
@@ -48,7 +48,7 @@ public class ReservationTest {
 			Arguments.of(
 				LocalDate.now(),
 				new ReservationTime(LocalTime.now().plusHours(1)),
-				new Theme("테마명", "설명", "썸네일URI"),
+				new ThemeEntity(null, "테마명", "설명", "썸네일URI"),
 				null)
 		);
 	}

src/test/java/roomescape/reservation/domain/repository/ReservationSearchSpecificationTest.java

@@ -19,8 +19,8 @@ import roomescape.member.infrastructure.persistence.Role;
 import roomescape.reservation.domain.Reservation;
 import roomescape.reservation.domain.ReservationStatus;
 import roomescape.reservation.domain.ReservationTime;
-import roomescape.theme.domain.Theme;
+import roomescape.theme.infrastructure.persistence.ThemeEntity;
-import roomescape.theme.domain.repository.ThemeRepository;
+import roomescape.theme.infrastructure.persistence.ThemeRepository;
 
 @DataJpaTest
 class ReservationSearchSpecificationTest {
@@ -52,7 +52,7 @@ class ReservationSearchSpecificationTest {
 		LocalDateTime dateTime = LocalDateTime.now();
 		Member member = memberRepository.save(new Member(null, "name", "email@email.com", "password", Role.MEMBER));
 		ReservationTime time = timeRepository.save(new ReservationTime(dateTime.toLocalTime()));
-		Theme theme = themeRepository.save(new Theme("name", "description", "thumbnail"));
+		ThemeEntity theme = themeRepository.save(new ThemeEntity(null, "name", "description", "thumbnail"));
 
 		reservation1 = reservationRepository.save(
 			new Reservation(dateTime.toLocalDate(), time, theme, member, ReservationStatus.CONFIRMED));

src/test/java/roomescape/reservation/service/ReservationServiceTest.java

@@ -27,9 +27,9 @@ import roomescape.reservation.dto.request.ReservationRequest;
 import roomescape.reservation.dto.request.WaitingRequest;
 import roomescape.reservation.dto.response.ReservationResponse;
 import roomescape.common.exception.RoomescapeException;
-import roomescape.theme.domain.Theme;
+import roomescape.theme.infrastructure.persistence.ThemeEntity;
-import roomescape.theme.domain.repository.ThemeRepository;
+import roomescape.theme.infrastructure.persistence.ThemeRepository;
-import roomescape.theme.service.ThemeService;
+import roomescape.theme.business.ThemeService;
 
 @SpringBootTest
 @Sql(scripts = "/truncate.sql", executionPhase = ExecutionPhase.BEFORE_TEST_METHOD)
@@ -52,7 +52,7 @@ class ReservationServiceTest {
 	void reservationAlreadyExistFail() {
 		// given
 		ReservationTime reservationTime = reservationTimeRepository.save(new ReservationTime(LocalTime.of(12, 30)));
-		Theme theme = themeRepository.save(new Theme("테마명", "설명", "썸네일URL"));
+		ThemeEntity theme = themeRepository.save(new ThemeEntity(null, "테마명", "설명", "썸네일URL"));
 		Member member1 = memberRepository.save(new Member(null, "name", "email@email.com", "password", Role.MEMBER));
 		Member member2 = memberRepository.save(new Member(null, "name2", "email2@email.com", "password", Role.MEMBER));
 		LocalDate date = LocalDate.now().plusDays(1L);
@@ -74,7 +74,7 @@ class ReservationServiceTest {
 	void requestWaitWhenAlreadyReserveFail() {
 		// given
 		ReservationTime reservationTime = reservationTimeRepository.save(new ReservationTime(LocalTime.of(12, 30)));
-		Theme theme = themeRepository.save(new Theme("테마명", "설명", "썸네일URL"));
+		ThemeEntity theme = themeRepository.save(new ThemeEntity(null, "테마명", "설명", "썸네일URL"));
 		Member member = memberRepository.save(new Member(null, "name", "email@email.com", "password", Role.MEMBER));
 		LocalDate date = LocalDate.now().plusDays(1L);
 
@@ -94,7 +94,7 @@ class ReservationServiceTest {
 	void requestWaitTwiceFail() {
 		// given
 		ReservationTime reservationTime = reservationTimeRepository.save(new ReservationTime(LocalTime.of(12, 30)));
-		Theme theme = themeRepository.save(new Theme("테마명", "설명", "썸네일URL"));
+		ThemeEntity theme = themeRepository.save(new ThemeEntity(null, "테마명", "설명", "썸네일URL"));
 		Member member = memberRepository.save(new Member(null, "name", "email@email.com", "password", Role.MEMBER));
 		Member member1 = memberRepository.save(new Member(null, "name1", "email1@email.com", "password", Role.MEMBER));
 		LocalDate date = LocalDate.now().plusDays(1L);
@@ -118,7 +118,7 @@ class ReservationServiceTest {
 	void beforeDateReservationFail() {
 		// given
 		ReservationTime reservationTime = reservationTimeRepository.save(new ReservationTime(LocalTime.of(12, 30)));
-		Theme theme = themeRepository.save(new Theme("테마명", "설명", "썸네일URL"));
+		ThemeEntity theme = themeRepository.save(new ThemeEntity(null, "테마명", "설명", "썸네일URL"));
 		Member member = memberRepository.save(new Member(null, "name", "email@email.com", "password", Role.MEMBER));
 		LocalDate beforeDate = LocalDate.now().minusDays(1L);
 
@@ -135,7 +135,7 @@ class ReservationServiceTest {
 		// given
 		LocalDateTime beforeTime = LocalDateTime.now().minusHours(1L).withNano(0);
 		ReservationTime reservationTime = reservationTimeRepository.save(new ReservationTime(beforeTime.toLocalTime()));
-		Theme theme = themeRepository.save(new Theme("테마명", "설명", "썸네일URL"));
+		ThemeEntity theme = themeRepository.save(new ThemeEntity(null, "테마명", "설명", "썸네일URL"));
 		Member member = memberRepository.save(new Member(null, "name", "email@email.com", "password", Role.MEMBER));
 
 		// when & then
@@ -151,7 +151,7 @@ class ReservationServiceTest {
 		// given
 		LocalDateTime beforeTime = LocalDateTime.now().minusDays(1L).withNano(0);
 		ReservationTime reservationTime = reservationTimeRepository.save(new ReservationTime(beforeTime.toLocalTime()));
-		Theme theme = themeRepository.save(new Theme("테마명", "설명", "썸네일URL"));
+		ThemeEntity theme = themeRepository.save(new ThemeEntity(null, "테마명", "설명", "썸네일URL"));
 		Long NotExistMemberId = 1L;
 
 		// when & then
@@ -179,7 +179,7 @@ class ReservationServiceTest {
 	void confirmWaitingWhenReservationExist() {
 		// given
 		ReservationTime reservationTime = reservationTimeRepository.save(new ReservationTime(LocalTime.of(12, 30)));
-		Theme theme = themeRepository.save(new Theme("테마명", "설명", "썸네일URL"));
+		ThemeEntity theme = themeRepository.save(new ThemeEntity(null, "테마명", "설명", "썸네일URL"));
 		Member admin = memberRepository.save(new Member(null, "admin", "admin@email.com", "password", Role.ADMIN));
 		Member member = memberRepository.save(new Member(null, "name", "email@email.com", "password", Role.MEMBER));
 		Member member1 = memberRepository.save(new Member(null, "name1", "email1@email.com", "password", Role.MEMBER));
@@ -202,7 +202,7 @@ class ReservationServiceTest {
 	void approveWaiting() {
 		// given
 		ReservationTime reservationTime = reservationTimeRepository.save(new ReservationTime(LocalTime.of(12, 30)));
-		Theme theme = themeRepository.save(new Theme("테마명", "설명", "썸네일URL"));
+		ThemeEntity theme = themeRepository.save(new ThemeEntity(null, "테마명", "설명", "썸네일URL"));
 		Member admin = memberRepository.save(new Member(null, "admin", "admin@email.com", "password", Role.ADMIN));
 		Member member = memberRepository.save(new Member(null, "name", "email@email.com", "password", Role.MEMBER));
 

src/test/java/roomescape/reservation/service/ReservationTimeServiceTest.java

@@ -23,8 +23,8 @@ import roomescape.reservation.domain.repository.ReservationRepository;
 import roomescape.reservation.domain.repository.ReservationTimeRepository;
 import roomescape.reservation.dto.request.ReservationTimeRequest;
 import roomescape.common.exception.RoomescapeException;
-import roomescape.theme.domain.Theme;
+import roomescape.theme.infrastructure.persistence.ThemeEntity;
-import roomescape.theme.domain.repository.ThemeRepository;
+import roomescape.theme.infrastructure.persistence.ThemeRepository;
 
 @SpringBootTest
 @Import(ReservationTimeService.class)
@@ -74,7 +74,7 @@ class ReservationTimeServiceTest {
 		LocalDateTime localDateTime = LocalDateTime.now().plusDays(1L).withNano(0);
 		ReservationTime reservationTime = reservationTimeRepository.save(
 			new ReservationTime(localDateTime.toLocalTime()));
-		Theme theme = themeRepository.save(new Theme("테마명", "설명", "썸네일URL"));
+		ThemeEntity theme = themeRepository.save(new ThemeEntity(null, "테마명", "설명", "썸네일URL"));
 		Member member = memberRepository.save(new Member(null, "name", "email@email.com", "password", Role.MEMBER));
 
 		// when

src/test/java/roomescape/reservation/service/ReservationWithPaymentServiceTest.java

@@ -28,8 +28,8 @@ import roomescape.reservation.domain.repository.ReservationRepository;
 import roomescape.reservation.domain.repository.ReservationTimeRepository;
 import roomescape.reservation.dto.request.ReservationRequest;
 import roomescape.reservation.dto.response.ReservationResponse;
-import roomescape.theme.domain.Theme;
+import roomescape.theme.infrastructure.persistence.ThemeEntity;
-import roomescape.theme.domain.repository.ThemeRepository;
+import roomescape.theme.infrastructure.persistence.ThemeRepository;
 
 @SpringBootTest
 @Sql(scripts = "/truncate.sql", executionPhase = ExecutionPhase.BEFORE_TEST_METHOD)
@@ -60,7 +60,7 @@ class ReservationWithPaymentServiceTest {
 		LocalDate date = localDateTime.toLocalDate();
 		ReservationTime time = reservationTimeRepository.save(new ReservationTime(localDateTime.toLocalTime()));
 		Member member = memberRepository.save(new Member(null, "member", "email@email.com", "password", Role.MEMBER));
-		Theme theme = themeRepository.save(new Theme("name", "desc", "thumbnail"));
+		ThemeEntity theme = themeRepository.save(new ThemeEntity(null, "name", "desc", "thumbnail"));
 		ReservationRequest reservationRequest = new ReservationRequest(date, time.getId(), theme.getId(), "payment-key",
 			"order-id", 10000L, "NORMAL");
 
@@ -96,7 +96,7 @@ class ReservationWithPaymentServiceTest {
 		LocalDate date = localDateTime.toLocalDate();
 		ReservationTime time = reservationTimeRepository.save(new ReservationTime(localDateTime.toLocalTime()));
 		Member member = memberRepository.save(new Member(null, "member", "admin@email.com", "password", Role.ADMIN));
-		Theme theme = themeRepository.save(new Theme("name", "desc", "thumbnail"));
+		ThemeEntity theme = themeRepository.save(new ThemeEntity(null, "name", "desc", "thumbnail"));
 		ReservationRequest reservationRequest = new ReservationRequest(date, time.getId(), theme.getId(), "payment-key",
 			"order-id", 10000L, "NORMAL");
 
@@ -124,7 +124,7 @@ class ReservationWithPaymentServiceTest {
 		LocalDate date = localDateTime.toLocalDate();
 		ReservationTime time = reservationTimeRepository.save(new ReservationTime(localDateTime.toLocalTime()));
 		Member member = memberRepository.save(new Member(null, "member", "admin@email.com", "password", Role.ADMIN));
-		Theme theme = themeRepository.save(new Theme("name", "desc", "thumbnail"));
+		ThemeEntity theme = themeRepository.save(new ThemeEntity(null, "name", "desc", "thumbnail"));
 
 		Reservation saved = reservationRepository.save(
 			new Reservation(date, time, theme, member, ReservationStatus.CONFIRMED_PAYMENT_REQUIRED));
@@ -146,7 +146,7 @@ class ReservationWithPaymentServiceTest {
 		LocalDate date = localDateTime.toLocalDate();
 		ReservationTime time = reservationTimeRepository.save(new ReservationTime(localDateTime.toLocalTime()));
 		Member member = memberRepository.save(new Member(null, "member", "admin@email.com", "password", Role.ADMIN));
-		Theme theme = themeRepository.save(new Theme("name", "desc", "thumbnail"));
+		ThemeEntity theme = themeRepository.save(new ThemeEntity(null, "name", "desc", "thumbnail"));
 		ReservationRequest reservationRequest = new ReservationRequest(date, time.getId(), theme.getId(), "payment-key",
 			"order-id", 10000L, "NORMAL");
 

src/test/java/roomescape/theme/business/ThemeServiceTest.kt

@@ -0,0 +1,103 @@
+package roomescape.theme.business
+
+import io.kotest.assertions.assertSoftly
+import io.kotest.assertions.throwables.shouldThrow
+import io.kotest.core.spec.style.FunSpec
+import io.kotest.matchers.shouldBe
+import io.mockk.every
+import io.mockk.mockk
+import org.springframework.data.repository.findByIdOrNull
+import org.springframework.http.HttpStatus
+import roomescape.common.exception.ErrorType
+import roomescape.common.exception.RoomescapeException
+import roomescape.theme.infrastructure.persistence.ThemeEntity
+import roomescape.theme.infrastructure.persistence.ThemeRepository
+import roomescape.theme.web.ThemeRequest
+import roomescape.util.ThemeFixture
+
+class ThemeServiceTest : FunSpec({
+
+    val themeRepository: ThemeRepository = mockk()
+    val themeService = ThemeService(themeRepository)
+
+    context("findThemeById") {
+        val themeId = 1L
+        test("조회 성공") {
+            val theme: ThemeEntity = ThemeFixture.create(id = themeId)
+            every {
+                themeRepository.findByIdOrNull(themeId)
+            } returns theme
+
+            theme.id shouldBe themeId
+        }
+
+        test("ID로 테마를 찾을 수 없으면 400 예외를 던진다.") {
+            every {
+                themeRepository.findByIdOrNull(themeId)
+            } returns null
+
+            val exception = shouldThrow<RoomescapeException> {
+                themeService.findThemeById(themeId)
+            }
+
+            exception.errorType shouldBe ErrorType.THEME_NOT_FOUND
+        }
+    }
+
+    context("findAllThemes") {
+        test("모든 테마를 조회한다.") {
+            val themes = listOf(ThemeFixture.create(id = 1, name = "t1"), ThemeFixture.create(id = 2, name = "t2"))
+            every {
+                themeRepository.findAll()
+            } returns themes
+
+            assertSoftly(themeService.findAllThemes()) {
+                this.themes.size shouldBe themes.size
+                this.themes[0].name shouldBe "t1"
+                this.themes[1].name shouldBe "t2"
+            }
+        }
+    }
+
+    context("save") {
+        test("테마 이름이 중복되면 409 예외를 던진다.") {
+            val name = "Duplicate Theme"
+
+            every {
+                themeRepository.existsByName(name)
+            } returns true
+
+            val exception = shouldThrow<RoomescapeException> {
+                themeService.save(ThemeRequest(
+                        name = name,
+                        description = "Description",
+                        thumbnail = "http://example.com/thumbnail.jpg"
+                ))
+            }
+
+            assertSoftly(exception) {
+                this.errorType shouldBe ErrorType.THEME_DUPLICATED
+                this.httpStatus shouldBe HttpStatus.CONFLICT
+            }
+        }
+    }
+
+    context("deleteById") {
+        test("이미 예약 중인 테마라면 409 예외를 던진다.") {
+            val themeId = 1L
+
+            every {
+                themeRepository.isReservedTheme(themeId)
+            } returns true
+
+            val exception = shouldThrow<RoomescapeException> {
+                themeService.deleteById(themeId)
+            }
+
+            assertSoftly(exception) {
+                this.errorType shouldBe ErrorType.THEME_IS_USED_CONFLICT
+                this.httpStatus shouldBe HttpStatus.CONFLICT
+            }
+        }
+    }
+})

src/test/java/roomescape/theme/controller/ThemeControllerTest.java

@@ -1,184 +0,0 @@
-package roomescape.theme.controller;
-
-import static org.hamcrest.Matchers.*;
-
-import java.util.Map;
-import java.util.stream.Stream;
-
-import org.junit.jupiter.api.DisplayName;
-import org.junit.jupiter.api.Test;
-import org.junit.jupiter.params.ParameterizedTest;
-import org.junit.jupiter.params.provider.MethodSource;
-import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.boot.test.context.SpringBootTest;
-import org.springframework.boot.test.web.server.LocalServerPort;
-import org.springframework.test.context.jdbc.Sql;
-import org.springframework.test.context.jdbc.Sql.ExecutionPhase;
-
-import io.restassured.RestAssured;
-import io.restassured.http.ContentType;
-import io.restassured.http.Header;
-import roomescape.member.infrastructure.persistence.Member;
-import roomescape.member.infrastructure.persistence.MemberRepository;
-import roomescape.member.infrastructure.persistence.Role;
-
-@SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)
-@Sql(scripts = "/truncate.sql", executionPhase = ExecutionPhase.BEFORE_TEST_METHOD)
-class ThemeControllerTest {
-
-	@LocalServerPort
-	private int port;
-
-	@Autowired
-	private MemberRepository memberRepository;
-
-	@Test
-	@DisplayName("모든 테마 정보를 조회한다.")
-	void readThemes() {
-		String email = "admin@test.com";
-		String password = "12341234";
-		String adminAccessTokenCookie = getAdminAccessTokenCookieByLogin(email, password);
-
-		RestAssured.given().log().all()
-			.contentType(ContentType.JSON)
-			.header(new Header("Cookie", adminAccessTokenCookie))
-			.port(port)
-			.when().get("/themes")
-			.then().log().all()
-			.statusCode(200)
-			.body("data.themes.size()", is(0));
-	}
-
-	@Test
-	@DisplayName("테마를 추가한다.")
-	void createThemes() {
-		String email = "admin@test.com";
-		String password = "12341234";
-		String adminAccessTokenCookie = getAdminAccessTokenCookieByLogin(email, password);
-
-		Map<String, String> params = Map.of(
-			"name", "테마명",
-			"description", "설명",
-			"thumbnail", "http://testsfasdgasd.com"
-		);
-
-		RestAssured.given().log().all()
-			.contentType(ContentType.JSON)
-			.header(new Header("Cookie", adminAccessTokenCookie))
-			.port(port)
-			.body(params)
-			.when().post("/themes")
-			.then().log().all()
-			.statusCode(201)
-			.body("data.id", is(1))
-			.header("Location", "/themes/1");
-	}
-
-	@Test
-	@DisplayName("테마를 삭제한다.")
-	void deleteThemes() {
-		String email = "admin@test.com";
-		String password = "12341234";
-		String adminAccessTokenCookie = getAdminAccessTokenCookieByLogin(email, password);
-
-		Map<String, String> params = Map.of(
-			"name", "테마명",
-			"description", "설명",
-			"thumbnail", "http://testsfasdgasd.com"
-		);
-
-		RestAssured.given().log().all()
-			.contentType(ContentType.JSON)
-			.header(new Header("Cookie", adminAccessTokenCookie))
-			.port(port)
-			.body(params)
-			.when().post("/themes")
-			.then().log().all()
-			.statusCode(201)
-			.body("data.id", is(1))
-			.header("Location", "/themes/1");
-
-		RestAssured.given().log().all()
-			.contentType(ContentType.JSON)
-			.header(new Header("Cookie", adminAccessTokenCookie))
-			.port(port)
-			.when().delete("/themes/1")
-			.then().log().all()
-			.statusCode(204);
-	}
-
-	/*
-	 *  reservationData DataSet ThemeID 별 reservation 개수
-	 *  5,4,2,5,2,3,1,1,1,1,1
-	 *  예약 수 내림차순 + ThemeId 오름차순 정렬 순서
-	 *  1, 4, 2, 6, 3, 5, 7, 8, 9, 10
-	 */
-	@Test
-	@DisplayName("예약 수 상위 10개 테마를 조회했을 때 내림차순으로 정렬된다. 만약 예약 수가 같다면, id 순으로 오름차순 정렬된다.")
-	@Sql(scripts = {"/truncate.sql", "/reservationData.sql"}, executionPhase = ExecutionPhase.BEFORE_TEST_METHOD)
-	void readTop10ThemesDescOrder() {
-		RestAssured.given().log().all()
-			.contentType(ContentType.JSON)
-			.port(port)
-			.when().get("/themes/most-reserved-last-week?count=10")
-			.then().log().all()
-			.statusCode(200)
-			.body("data.themes.size()", is(10))
-			.body("data.themes.id", contains(1, 4, 2, 6, 3, 5, 7, 8, 9, 10));
-	}
-
-	@ParameterizedTest
-	@MethodSource("requestValidateSource")
-	@DisplayName("테마 생성 시, 요청 값에 공백 또는 null이 포함되어 있으면 400 에러를 발생한다.")
-	void validateBlankRequest(Map<String, String> invalidRequestBody) {
-		String email = "admin@test.com";
-		String password = "12341234";
-		String adminAccessTokenCookie = getAdminAccessTokenCookieByLogin(email, password);
-
-		RestAssured.given().log().all()
-			.contentType(ContentType.JSON)
-			.header(new Header("Cookie", adminAccessTokenCookie))
-			.port(port)
-			.body(invalidRequestBody)
-			.when().post("/themes")
-			.then().log().all()
-			.statusCode(400);
-	}
-
-	static Stream<Map<String, String>> requestValidateSource() {
-		return Stream.of(
-			Map.of(
-				"name", "테마명",
-				"thumbnail", "http://testsfasdgasd.com"
-			),
-			Map.of(
-				"name", "",
-				"description", "설명",
-				"thumbnail", "http://testsfasdgasd.com"
-			),
-			Map.of(
-				"name", " ",
-				"description", "설명",
-				"thumbnail", "http://testsfasdgasd.com"
-			)
-		);
-	}
-
-	private String getAdminAccessTokenCookieByLogin(final String email, final String password) {
-		memberRepository.save(new Member(null, "이름", email, password, Role.ADMIN));
-
-		Map<String, String> loginParams = Map.of(
-			"email", email,
-			"password", password
-		);
-
-		String accessToken = RestAssured.given().log().all()
-			.contentType(ContentType.JSON)
-			.port(port)
-			.body(loginParams)
-			.when().post("/login")
-			.then().log().all().extract().cookie("accessToken");
-
-		return "accessToken=" + accessToken;
-	}
-}

src/test/java/roomescape/theme/infrastructure/persistence/ThemeRepositoryTest.kt

@@ -0,0 +1,147 @@
+package roomescape.theme.infrastructure.persistence
+
+import io.kotest.core.spec.style.FunSpec
+import io.kotest.matchers.collections.shouldContainInOrder
+import io.kotest.matchers.shouldBe
+import jakarta.persistence.EntityManager
+import org.springframework.boot.test.autoconfigure.orm.jpa.DataJpaTest
+import roomescape.theme.util.TestThemeCreateUtil
+import java.time.LocalDate
+
+@DataJpaTest
+class ThemeRepositoryTest(
+        val themeRepository: ThemeRepository,
+        val entityManager: EntityManager
+) : FunSpec() {
+
+    init {
+        context("findTopNThemeBetweenStartDateAndEndDate") {
+            beforeTest {
+                for (i in 1..10) {
+                    TestThemeCreateUtil.createThemeWithReservations(
+                            entityManager = entityManager,
+                            name = "테마$i",
+                            reservedCount = i,
+                            date = LocalDate.now().minusDays(i.toLong()),
+                    )
+                }
+            }
+
+            test("지난 10일간 예약 수가 가장 많은 테마 5개를 조회한다.") {
+                themeRepository.findTopNThemeBetweenStartDateAndEndDate(
+                        LocalDate.now().minusDays(10),
+                        LocalDate.now().minusDays(1),
+                        5
+                ).also { themes ->
+                    themes.size shouldBe 5
+                    themes.map { it.name } shouldContainInOrder listOf(
+                            "테마10", "테마9", "테마8", "테마7", "테마6"
+                    )
+                }
+            }
+
+            test("8일 전부터 5일 전까지 예약 수가 가장 많은 테마 3개를 조회한다.") {
+                themeRepository.findTopNThemeBetweenStartDateAndEndDate(
+                        LocalDate.now().minusDays(8),
+                        LocalDate.now().minusDays(5),
+                        3
+                ).also { themes ->
+                    themes.size shouldBe 3
+                    themes.map { it.name } shouldContainInOrder listOf(
+                            "테마8", "테마7", "테마6"
+                    )
+                }
+            }
+
+            test("예약 수가 동일하면 먼저 생성된 테마를 우선 조회한다.") {
+                TestThemeCreateUtil.createThemeWithReservations(
+                        entityManager = entityManager,
+                        name = "테마11",
+                        reservedCount = 5,
+                        date = LocalDate.now().minusDays(5),
+                )
+
+                themeRepository.findTopNThemeBetweenStartDateAndEndDate(
+                        LocalDate.now().minusDays(6),
+                        LocalDate.now().minusDays(4),
+                        5
+                ).also { themes ->
+                    themes.size shouldBe 4
+                    themes.map { it.name } shouldContainInOrder listOf(
+                            "테마6", "테마5", "테마11", "테마4"
+                    )
+                }
+            }
+
+            test("입력된 갯수보다 조회된 갯수가 작으면, 조회된 갯수만큼 반환한다.") {
+                themeRepository.findTopNThemeBetweenStartDateAndEndDate(
+                        LocalDate.now().minusDays(10),
+                        LocalDate.now().minusDays(6),
+                        10
+                ).also { themes ->
+                    themes.size shouldBe 5
+                }
+            }
+
+            test("입력된 갯수보다 조회된 갯수가 많으면, 입력된 갯수만큼 반환한다.") {
+                themeRepository.findTopNThemeBetweenStartDateAndEndDate(
+                        LocalDate.now().minusDays(10),
+                        LocalDate.now().minusDays(1),
+                        15
+                ).also { themes ->
+                    themes.size shouldBe 10
+                }
+            }
+
+            test("입력된 날짜 범위에 예약된 테마가 없을 경우 빈 리스트를 반환한다.") {
+                themeRepository.findTopNThemeBetweenStartDateAndEndDate(
+                        LocalDate.now().plusDays(1),
+                        LocalDate.now().plusDays(10),
+                        5
+                ).also { themes ->
+                    themes.size shouldBe 0
+                }
+            }
+        }
+        context("existsByName ") {
+            val themeName = "test-theme"
+            beforeTest {
+                TestThemeCreateUtil.createThemeWithReservations(
+                        entityManager = entityManager,
+                        name = themeName,
+                        reservedCount = 0,
+                        date = LocalDate.now()
+                )
+            }
+            test("테마 이름이 존재하면 true를 반환한다.") {
+                themeRepository.existsByName(themeName) shouldBe true
+            }
+
+            test("테마 이름이 존재하지 않으면 false를 반환한다.") {
+                themeRepository.existsByName(themeName.repeat(2)) shouldBe false
+            }
+        }
+
+        context("isReservedTheme") {
+            test("테마가 예약 중이면 true를 반환한다.") {
+                val theme = TestThemeCreateUtil.createThemeWithReservations(
+                        entityManager = entityManager,
+                        name = "예약된 테마",
+                        reservedCount = 1,
+                        date = LocalDate.now()
+                )
+                themeRepository.isReservedTheme(theme.id!!) shouldBe true
+            }
+
+            test("테마가 예약 중이 아니면 false를 반환한다.") {
+                val theme = TestThemeCreateUtil.createThemeWithReservations(
+                        entityManager = entityManager,
+                        name = "예약되지 않은 테마",
+                        reservedCount = 0,
+                        date = LocalDate.now()
+                )
+                themeRepository.isReservedTheme(theme.id!!) shouldBe false
+            }
+        }
+    }
+}

src/test/java/roomescape/theme/service/ThemeServiceTest.java

@@ -1,164 +0,0 @@
-package roomescape.theme.service;
-
-import static org.assertj.core.api.Assertions.*;
-
-import java.time.LocalDate;
-import java.time.LocalDateTime;
-import java.util.List;
-
-import org.junit.jupiter.api.DisplayName;
-import org.junit.jupiter.api.Test;
-import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.boot.test.autoconfigure.orm.jpa.DataJpaTest;
-import org.springframework.context.annotation.Import;
-import org.springframework.test.context.jdbc.Sql;
-
-import roomescape.member.business.MemberService;
-import roomescape.member.infrastructure.persistence.Member;
-import roomescape.member.infrastructure.persistence.MemberRepository;
-import roomescape.member.infrastructure.persistence.Role;
-import roomescape.reservation.dto.request.ReservationRequest;
-import roomescape.reservation.dto.request.ReservationTimeRequest;
-import roomescape.reservation.dto.response.ReservationTimeResponse;
-import roomescape.reservation.service.ReservationService;
-import roomescape.reservation.service.ReservationTimeService;
-import roomescape.common.exception.RoomescapeException;
-import roomescape.theme.domain.Theme;
-import roomescape.theme.domain.repository.ThemeRepository;
-import roomescape.theme.dto.ThemeRequest;
-import roomescape.theme.dto.ThemeResponse;
-import roomescape.theme.dto.ThemesResponse;
-
-@DataJpaTest
-@Import({ReservationTimeService.class, ReservationService.class, MemberService.class, ThemeService.class})
-@Sql(scripts = "/truncate.sql", executionPhase = Sql.ExecutionPhase.BEFORE_TEST_METHOD)
-class ThemeServiceTest {
-
-	@Autowired
-	private ThemeRepository themeRepository;
-
-	@Autowired
-	private ThemeService themeService;
-
-	@Autowired
-	private ReservationTimeService reservationTimeService;
-
-	@Autowired
-	private MemberRepository memberRepository;
-
-	@Autowired
-	private ReservationService reservationService;
-
-	@Test
-	@DisplayName("테마를 조회한다.")
-	void findThemeById() {
-		// given
-		Theme theme = themeRepository.save(new Theme("name", "description", "thumbnail"));
-
-		// when
-		Theme foundTheme = themeService.findThemeById(theme.getId());
-
-		// then
-		assertThat(foundTheme).isEqualTo(theme);
-	}
-
-	@Test
-	@DisplayName("존재하지 않는 ID로 테마를 조회하면 예외가 발생한다.")
-	void findThemeByNotExistId() {
-		// given
-		Theme theme = themeRepository.save(new Theme("name", "description", "thumbnail"));
-
-		// when
-		Long notExistId = theme.getId() + 1;
-
-		// then
-		assertThatThrownBy(() -> themeService.findThemeById(notExistId))
-			.isInstanceOf(RoomescapeException.class);
-	}
-
-	@Test
-	@DisplayName("모든 테마를 조회한다.")
-	void findAllThemes() {
-		// given
-		Theme theme = themeRepository.save(new Theme("name", "description", "thumbnail"));
-		Theme theme1 = themeRepository.save(new Theme("name1", "description1", "thumbnail1"));
-
-		// when
-		ThemesResponse found = themeService.findAllThemes();
-
-		// then
-		assertThat(found.themes()).extracting("id").containsExactly(theme.getId(), theme1.getId());
-	}
-
-	@Test
-	@DisplayName("예약 수 상위 10개 테마를 조회했을 때 내림차순으로 정렬된다. 만약 예약 수가 같다면, id 순으로 오름차순 정렬된다.")
-	@Sql({"/truncate.sql", "/reservationData.sql"})
-	void getMostReservedThemesByCount() {
-		// given
-		LocalDate today = LocalDate.now();
-
-		// when
-		List<ThemeResponse> found = themeService.getMostReservedThemesByCount(10).themes();
-
-		// then : 11번 테마는 조회되지 않아야 한다.
-		assertThat(found).extracting("id").containsExactly(1L, 4L, 2L, 6L, 3L, 5L, 7L, 8L, 9L, 10L);
-	}
-
-	@Test
-	@DisplayName("테마를 추가한다.")
-	void addTheme() {
-		// given
-		ThemeResponse themeResponse = themeService.addTheme(new ThemeRequest("name", "description", "thumbnail"));
-
-		// when
-		Theme found = themeRepository.findById(themeResponse.id()).orElse(null);
-
-		// then
-		assertThat(found).isNotNull();
-	}
-
-	@Test
-	@DisplayName("테마를 추가할 때 같은 이름의 테마가 존재하면 예외가 발생한다. ")
-	void addDuplicateTheme() {
-		// given
-		ThemeResponse themeResponse = themeService.addTheme(new ThemeRequest("name", "description", "thumbnail"));
-
-		// when
-		ThemeRequest invalidRequest = new ThemeRequest(themeResponse.name(), "description", "thumbnail");
-
-		// then
-		assertThatThrownBy(() -> themeService.addTheme(invalidRequest))
-			.isInstanceOf(RoomescapeException.class);
-	}
-
-	@Test
-	@DisplayName("테마를 삭제한다.")
-	void removeThemeById() {
-		// given
-		Theme theme = themeRepository.save(new Theme("name", "description", "thumbnail"));
-
-		// when
-		themeService.removeThemeById(theme.getId());
-
-		// then
-		assertThat(themeRepository.findById(theme.getId())).isEmpty();
-	}
-
-	@Test
-	@DisplayName("예약이 존재하는 테마를 삭제하면 예외가 발생한다.")
-	void removeReservedTheme() {
-		// given
-		LocalDateTime dateTime = LocalDateTime.now().plusDays(1);
-		ReservationTimeResponse time = reservationTimeService.addTime(
-			new ReservationTimeRequest(dateTime.toLocalTime()));
-		Theme theme = themeRepository.save(new Theme("name", "description", "thumbnail"));
-		Member member = memberRepository.save(new Member(null, "member", "password", "name", Role.MEMBER));
-		reservationService.addReservation(
-			new ReservationRequest(dateTime.toLocalDate(), time.id(), theme.getId(), "paymentKey", "orderId", 1000L,
-				"NORMAL"), member.getId());
-
-		// when & then
-		assertThatThrownBy(() -> themeService.removeThemeById(theme.getId()))
-			.isInstanceOf(RoomescapeException.class);
-	}
-}

src/test/java/roomescape/theme/util/TestThemeCreateUtil.kt

@@ -0,0 +1,44 @@
+package roomescape.theme.util
+
+import jakarta.persistence.EntityManager
+import roomescape.member.infrastructure.persistence.Member
+import roomescape.reservation.domain.ReservationStatus
+import roomescape.reservation.domain.ReservationTime
+import roomescape.theme.infrastructure.persistence.ThemeEntity
+import roomescape.util.MemberFixture
+import roomescape.util.ReservationFixture
+import roomescape.util.ReservationTimeFixture
+import roomescape.util.ThemeFixture
+import java.time.LocalDate
+import java.time.LocalTime
+
+object TestThemeCreateUtil {
+    fun createThemeWithReservations(
+            entityManager: EntityManager,
+            name: String,
+            reservedCount: Int,
+            date: LocalDate,
+    ): ThemeEntity {
+        val themeEntity: ThemeEntity = ThemeFixture.create(name = name).also { entityManager.persist(it) }
+        val member: Member = MemberFixture.create().also { entityManager.persist(it) }
+
+        for (i in 1..reservedCount) {
+            val time: ReservationTime = ReservationTimeFixture.create(
+                    startAt = LocalTime.now().plusMinutes(i.toLong())
+            ).also { entityManager.persist(it) }
+
+            ReservationFixture.create(
+                    date = date,
+                    themeEntity = themeEntity,
+                    member = member,
+                    reservationTime = time,
+                    status = ReservationStatus.CONFIRMED
+            ).also { entityManager.persist(it) }
+        }
+
+        entityManager.flush()
+        entityManager.clear()
+
+        return themeEntity
+    }
+}

src/test/java/roomescape/theme/web/MostReservedThemeAPITest.kt

@@ -0,0 +1,113 @@
+package roomescape.theme.web
+
+import io.kotest.core.spec.style.FunSpec
+import io.restassured.module.kotlin.extensions.Given
+import io.restassured.module.kotlin.extensions.Then
+import io.restassured.module.kotlin.extensions.When
+import jakarta.persistence.EntityManager
+import org.hamcrest.Matchers.equalTo
+import org.springframework.boot.test.context.SpringBootTest
+import org.springframework.boot.test.web.server.LocalServerPort
+import org.springframework.test.context.jdbc.Sql
+import org.springframework.transaction.support.TransactionTemplate
+import roomescape.theme.business.ThemeService
+import roomescape.theme.util.TestThemeCreateUtil
+import java.time.LocalDate
+import kotlin.random.Random
+
+/**
+ * GET /themes/most-reserved-last-week API 테스트
+ * 상세 테스트는 Repository 테스트에서 진행
+ * 날짜 범위, 예약 수만 검증
+ */
+@SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)
+@Sql(value = ["/truncate.sql"], executionPhase = Sql.ExecutionPhase.AFTER_TEST_CLASS)
+class MostReservedThemeAPITest(
+        @LocalServerPort val port: Int,
+        val themeService: ThemeService,
+        val transactionTemplate: TransactionTemplate,
+        val entityManager: EntityManager,
+) : FunSpec() {
+    init {
+        beforeSpec {
+            transactionTemplate.executeWithoutResult {
+                // 지난 7일간 예약된 테마 10개 생성
+                for (i in 1..10) {
+                    TestThemeCreateUtil.createThemeWithReservations(
+                            entityManager = entityManager,
+                            name = "테마$i",
+                            reservedCount = 1,
+                            date = LocalDate.now().minusDays(Random.nextLong(1, 7))
+                    )
+                }
+
+                // 8일 전 예약된 테마 1개 생성
+                TestThemeCreateUtil.createThemeWithReservations(
+                        entityManager = entityManager,
+                        name = "테마11",
+                        reservedCount = 1,
+                        date = LocalDate.now().minusDays(8)
+                )
+            }
+        }
+
+        context("가장 많이 예약된 테마를 조회할 때,  ") {
+            val endpoint = "/themes/most-reserved-last-week"
+            test("갯수를 입력하지 않으면 10개를 반환한다.") {
+                Given {
+                    port(port)
+                } When {
+                    get(endpoint)
+                } Then {
+                    log().all()
+                    statusCode(200)
+                    body("data.themes.size()", equalTo(10))
+                }
+            }
+
+            test("입력된 갯수가 조회된 갯수보다 크면 조회된 갯수만큼 반환한다.") {
+                val count = 15
+                Given {
+                    port(port)
+                } When {
+                    param("count", count)
+                    get("/themes/most-reserved-last-week")
+                } Then {
+                    log().all()
+                    statusCode(200)
+                    body("data.themes.size()", equalTo(10))
+                }
+            }
+
+            test("입력된 갯수가 조회된 갯수보다 작으면 입력된 갯수만큼 반환한다.") {
+                val count = 5
+                Given {
+                    port(port)
+                } When {
+                    param("count", count)
+                    get("/themes/most-reserved-last-week")
+                } Then {
+                    log().all()
+                    statusCode(200)
+                    body("data.themes.size()", equalTo(count))
+                }
+            }
+
+            test("7일 전 부터 1일 전 까지 예약된 테마를 대상으로 한다.") {
+                // 현재 저장된 데이터는 지난 7일간 예약된 테마 10개와 8일 전 예약된 테마 1개
+                // 8일 전 예약된 테마는 제외되어야 하므로, 10개가 조회되어야 한다.
+                val count = 11
+                Given {
+                    port(port)
+                } When {
+                    param("count", count)
+                    get("/themes/most-reserved-last-week")
+                } Then {
+                    log().all()
+                    statusCode(200)
+                    body("data.themes.size()", equalTo(10))
+                }
+            }
+        }
+    }
+}

src/test/java/roomescape/theme/web/ThemeControllerTest.kt

@@ -0,0 +1,307 @@
+package roomescape.theme.web
+
+import com.ninjasquad.springmockk.MockkBean
+import com.ninjasquad.springmockk.SpykBean
+import io.kotest.assertions.assertSoftly
+import io.kotest.matchers.collections.shouldContainAll
+import io.kotest.matchers.shouldBe
+import io.mockk.every
+import io.mockk.just
+import io.mockk.runs
+import org.springframework.boot.test.autoconfigure.web.servlet.WebMvcTest
+import org.springframework.http.MediaType
+import org.springframework.test.web.servlet.MockMvc
+import roomescape.theme.business.ThemeService
+import roomescape.theme.infrastructure.persistence.ThemeRepository
+import roomescape.util.RoomescapeApiTest
+import roomescape.util.ThemeFixture
+
+@WebMvcTest(ThemeController::class)
+class ThemeControllerTest(mockMvc: MockMvc) : RoomescapeApiTest() {
+
+    @SpykBean
+    private lateinit var themeService: ThemeService
+
+    @MockkBean
+    private lateinit var themeRepository: ThemeRepository
+
+    init {
+        Given("모든 테마를 조회할 때") {
+            val endpoint = "/themes"
+
+            When("로그인 상태가 아니라면") {
+                doNotLogin()
+
+                Then("로그인 페이지로 이동한다.") {
+                    runGetTest(
+                            mockMvc = mockMvc,
+                            endpoint = endpoint,
+                            log = true
+                    ) {
+                        status { is3xxRedirection() }
+                        header {
+                            string("Location", "/login")
+                        }
+                    }
+                }
+            }
+
+            When("로그인 상태라면") {
+                loginAsUser()
+
+                Then("조회에 성공한다.") {
+                    every {
+                        themeRepository.findAll()
+                    } returns listOf(
+                            ThemeFixture.create(id = 1, name = "theme1"),
+                            ThemeFixture.create(id = 2, name = "theme2"),
+                            ThemeFixture.create(id = 3, name = "theme3")
+                    )
+
+                    val response: ThemesResponse = runGetTest(
+                            mockMvc = mockMvc,
+                            endpoint = endpoint,
+                            log = true
+                    ) {
+                        status { isOk() }
+                        content {
+                            contentType(MediaType.APPLICATION_JSON)
+                        }
+                    }.andReturn().readValue(ThemesResponse::class.java)
+
+                    assertSoftly(response.themes) {
+                        it.size shouldBe 3
+                        it.map { m -> m.name } shouldContainAll listOf("theme1", "theme2", "theme3")
+                    }
+                }
+            }
+        }
+
+        Given("테마를 추가할 때") {
+            val endpoint = "/themes"
+            val request = ThemeRequest(
+                    name = "theme1",
+                    description = "description1",
+                    thumbnail = "http://example.com/thumbnail1.jpg"
+            )
+
+            When("로그인 상태가 아니라면") {
+                doNotLogin()
+                Then("로그인 페이지로 이동한다.") {
+                    runPostTest(
+                            mockMvc = mockMvc,
+                            endpoint = endpoint,
+                            body = request,
+                            log = true
+                    ) {
+                        status { is3xxRedirection() }
+                        header {
+                            string("Location", "/login")
+                        }
+                    }
+                }
+            }
+
+            When("관리자가 아닌 회원은") {
+                loginAsUser()
+                Then("로그인 페이지로 이동한다.") {
+                    runPostTest(
+                            mockMvc = mockMvc,
+                            endpoint = endpoint,
+                            body = request,
+                            log = true
+                    ) {
+                        status { is3xxRedirection() }
+                        jsonPath("$.errorType") { value("PERMISSION_DOES_NOT_EXIST") }
+                    }
+                }
+            }
+
+            When("동일한 이름의 테마가 있으면") {
+                loginAsAdmin()
+
+                Then("409 에러를 응답한다.") {
+                    every {
+                        themeRepository.existsByName(request.name)
+                    } returns true
+
+                    runPostTest(
+                            mockMvc = mockMvc,
+                            endpoint = endpoint,
+                            body = request,
+                            log = true
+                    ) {
+                        status { isConflict() }
+                        jsonPath("$.errorType") { value("THEME_DUPLICATED") }
+                    }
+                }
+            }
+
+            When("값이 잘못 입력되면 400 에러를 응답한다") {
+                beforeTest {
+                    loginAsAdmin()
+                }
+
+                val request = ThemeRequest(
+                        name = "theme1",
+                        description = "description1",
+                        thumbnail = "http://example.com/thumbnail1.jpg"
+                )
+
+                fun runTest(request: ThemeRequest) {
+                    runPostTest(
+                            mockMvc = mockMvc,
+                            endpoint = endpoint,
+                            body = request,
+                            log = true
+                    ) {
+                        status { isBadRequest() }
+                    }
+                }
+
+                Then("이름이 공백인 경우") {
+                    val invalidRequest = request.copy(name = " ")
+                    runTest(invalidRequest)
+                }
+
+                Then("이름이 20글자를 초과하는 경우") {
+                    val invalidRequest = request.copy(name = "a".repeat(21))
+                    runTest(invalidRequest)
+                }
+
+                Then("설명이 공백인 경우") {
+                    val invalidRequest = request.copy(description = " ")
+                    runTest(invalidRequest)
+                }
+
+                Then("설명이 100글자를 초과하는 경우") {
+                    val invalidRequest = request.copy(description = "a".repeat(101))
+                    runTest(invalidRequest)
+                }
+
+                Then("썸네일이 공백인 경우") {
+                    val invalidRequest = request.copy(thumbnail = " ")
+                    runTest(invalidRequest)
+                }
+
+                Then("썸네일이 URL 형식이 아닌 경우") {
+                    val invalidRequest = request.copy(thumbnail = "invalid-url")
+                    runTest(invalidRequest)
+                }
+            }
+
+            When("저장에 성공하면") {
+                loginAsAdmin()
+
+                val theme = ThemeFixture.create(
+                        id = 1,
+                        name = request.name,
+                        description = request.description,
+                        thumbnail = request.thumbnail
+                )
+
+                every {
+                    themeRepository.existsByName(request.name)
+                } returns false
+
+                every {
+                    themeRepository.save(any())
+                } returns theme
+
+                Then("201 응답을 받는다.") {
+                    runPostTest(
+                            mockMvc = mockMvc,
+                            endpoint = endpoint,
+                            body = request,
+                            log = true
+                    ) {
+                        status { isCreated() }
+                        header {
+                            string("Location", "/themes/${theme.id}")
+                        }
+                        jsonPath("$.data.id") { value(theme.id) }
+                        jsonPath("$.data.name") { value(theme.name) }
+                        jsonPath("$.data.description") { value(theme.description) }
+                        jsonPath("$.data.thumbnail") { value(theme.thumbnail) }
+                    }
+                }
+            }
+        }
+
+        Given("테마를 제거할 때") {
+            val themeId = 1L
+            val endpoint = "/themes/$themeId"
+
+            When("로그인 상태가 아니라면") {
+                doNotLogin()
+                Then("로그인 페이지로 이동한다.") {
+                    runDeleteTest(
+                            mockMvc = mockMvc,
+                            endpoint = endpoint,
+                            log = true
+                    ) {
+                        status { is3xxRedirection() }
+                        header {
+                            string("Location", "/login")
+                        }
+                    }
+                }
+            }
+
+            When("관리자가 아닌 회원은") {
+                loginAsUser()
+                Then("로그인 페이지로 이동한다.") {
+                    runDeleteTest(
+                            mockMvc = mockMvc,
+                            endpoint = endpoint,
+                            log = true
+                    ) {
+                        status { is3xxRedirection() }
+                        jsonPath("$.errorType") { value("PERMISSION_DOES_NOT_EXIST") }
+                    }
+                }
+            }
+
+            When("입력된 ID에 해당하는 테마가 없으면") {
+                loginAsAdmin()
+
+                Then("409 에러를 응답한다.") {
+                    every {
+                        themeRepository.isReservedTheme(themeId)
+                    } returns true
+
+                    runDeleteTest(
+                            mockMvc = mockMvc,
+                            endpoint = endpoint,
+                            log = true
+                    ) {
+                        status { isConflict() }
+                        jsonPath("$.errorType") { value("THEME_IS_USED_CONFLICT") }
+                    }
+                }
+            }
+
+            When("정상적으로 제거되면") {
+                loginAsAdmin()
+
+                every {
+                    themeRepository.isReservedTheme(themeId)
+                } returns false
+
+                every {
+                    themeRepository.deleteById(themeId)
+                } just runs
+
+                Then("204 응답을 받는다.") {
+                    runDeleteTest(
+                            mockMvc = mockMvc,
+                            endpoint = endpoint,
+                            log = true
+                    ) {
+                        status { isNoContent() }
+                    }
+                }
+            }
+        }
+    }
+}

src/test/java/roomescape/util/Fixtures.kt

@@ -11,7 +11,7 @@ import roomescape.payment.web.PaymentCancel
 import roomescape.reservation.domain.Reservation
 import roomescape.reservation.domain.ReservationStatus
 import roomescape.reservation.domain.ReservationTime
-import roomescape.theme.domain.Theme
+import roomescape.theme.infrastructure.persistence.ThemeEntity
 import java.time.LocalDate
 import java.time.LocalTime
 import java.time.OffsetDateTime
@@ -62,18 +62,18 @@ object ThemeFixture {
             name: String = "Default Theme",
             description: String = "Default Description",
             thumbnail: String = "https://example.com/default-thumbnail.jpg"
-    ): Theme = Theme(id, name, description, thumbnail)
+    ): ThemeEntity = ThemeEntity(id, name, description, thumbnail)
 }
 
 object ReservationFixture {
     fun create(
             id: Long? = null,
             date: LocalDate = LocalDate.now().plusWeeks(1),
-            theme: Theme = ThemeFixture.create(),
+            themeEntity: ThemeEntity = ThemeFixture.create(),
             reservationTime: ReservationTime = ReservationTimeFixture.create(),
             member: Member = MemberFixture.create(),
             status: ReservationStatus = ReservationStatus.CONFIRMED_PAYMENT_REQUIRED
-    ): Reservation = Reservation(id, date, reservationTime, theme, member, status)
+    ): Reservation = Reservation(id, date, reservationTime, themeEntity, member, status)
 }
 
 object JwtFixture {

src/test/java/roomescape/util/RoomescapeApiTest.kt

@@ -55,9 +55,7 @@ abstract class RoomescapeApiTest : BehaviorSpec() {
         header(HttpHeaders.COOKIE, "accessToken=token")
     }.apply {
         log.takeIf { it }?.let { this.andDo { print() } }
-    }.andExpect {
+    }.andExpect(assert)
-        assert
-    }
 
     fun runPostTest(
             mockMvc: MockMvc,
@@ -77,6 +75,19 @@ abstract class RoomescapeApiTest : BehaviorSpec() {
         assert
     }
 
+    fun runDeleteTest(
+            mockMvc: MockMvc,
+            endpoint: String,
+            log: Boolean = false,
+            assert: MockMvcResultMatchersDsl.() -> Unit
+    ): ResultActionsDsl = mockMvc.delete(endpoint) {
+        header(HttpHeaders.COOKIE, "accessToken=token")
+    }.apply {
+        log.takeIf { it }?.let { this.andDo { print() } }
+    }.andExpect {
+        assert
+    }
+
     fun loginAsAdmin() {
         every {
             jwtHandler.getMemberIdFromToken(any())
@@ -104,6 +115,13 @@ abstract class RoomescapeApiTest : BehaviorSpec() {
         every { memberRepository.findByIdOrNull(NOT_LOGGED_IN_USERID) } returns null
     }
 
+    fun <T> MvcResult.readValue(valueType: Class<T>): T = this.response.contentAsString
+            .takeIf { it.isNotBlank() }
+            ?.let { readValue(it, valueType) }
+            ?: throw RuntimeException("""
+                [Test] Exception occurred while reading response json: ${this.response.contentAsString} with value type: $valueType
+            """.trimIndent())
+
     fun <T> readValue(responseJson: String, valueType: Class<T>): T = objectMapper
             .readTree(responseJson)["data"]
             ?.let { objectMapper.convertValue(it, valueType) }