fix: 테스트 값 제거

server/build.gradle.kts

@@ -23,6 +23,8 @@ repositories {
 	mavenCentral()
 }
 
+extra["springCloudVersion"] = "2021.0.3"
+
 dependencies {
 	implementation("org.springframework.boot:spring-boot-starter-data-jpa")
 	implementation("org.springframework.boot:spring-boot-starter-security")
@@ -39,6 +41,8 @@ dependencies {
 	implementation("com.googlecode.json-simple:json-simple:1.1.1")
 	implementation("org.springframework.boot:spring-boot-starter-data-redis")
 	implementation("com.google.code.findbugs:jsr305:3.0.2")
+	implementation ("org.springframework.cloud:spring-cloud-starter-config")
+	implementation("org.springframework.cloud:spring-cloud-starter-openfeign")
 
 	modules {
 		module("org.springframework.boot:spring-boot-starter-logging") {
@@ -58,6 +62,12 @@ dependencies {
 	testImplementation("org.springframework.security:spring-security-test")
 }
 
+dependencyManagement {
+	imports {
+		mavenBom("org.springframework.cloud:spring-cloud-dependencies:${property("springCloudVersion")}")
+	}
+}
+
 tasks.withType<Test> {
 	useJUnitPlatform()
 }

server/src/main/java/com/ticketing/server/ServerApplication.java

@@ -1,14 +1,17 @@
 package com.ticketing.server;
 
 import com.ticketing.server.global.security.jwt.JwtProperties;
+import com.ticketing.server.payment.api.KakaoPayProperties;
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
 import org.springframework.boot.context.properties.EnableConfigurationProperties;
+import org.springframework.cloud.openfeign.EnableFeignClients;
 import org.springframework.data.jpa.repository.config.EnableJpaAuditing;
 
 @EnableJpaAuditing
+@EnableFeignClients
 @SpringBootApplication
-@EnableConfigurationProperties(JwtProperties.class)
+@EnableConfigurationProperties({JwtProperties.class, KakaoPayProperties.class})
 public class ServerApplication {
 
 	public static void main(String[] args) {

server/src/main/java/com/ticketing/server/global/dto/SequenceGenerator.java

@@ -1,4 +1,4 @@
-package com.ticketing.server.user.domain;
+package com.ticketing.server.global.dto;
 
 public interface SequenceGenerator {
 

server/src/main/java/com/ticketing/server/global/dto/Snowflake.java

@@ -1,4 +1,4 @@
-package com.ticketing.server.user.domain;
+package com.ticketing.server.global.dto;
 
 import java.net.NetworkInterface;
 import java.security.SecureRandom;

server/src/main/java/com/ticketing/server/global/exception/ErrorCode.java

@@ -5,6 +5,7 @@ import static org.springframework.http.HttpStatus.CONFLICT;
 import static org.springframework.http.HttpStatus.FORBIDDEN;
 import static org.springframework.http.HttpStatus.NOT_FOUND;
 
+import com.ticketing.server.global.redis.PaymentCache;
 import lombok.AllArgsConstructor;
 import lombok.Getter;
 import org.springframework.http.HttpStatus;
@@ -18,6 +19,11 @@ public enum ErrorCode {
 	TOKEN_TYPE(BAD_REQUEST, "토큰 타입이 올바르지 않습니다."),
 	UNAVAILABLE_REFRESH_TOKEN(BAD_REQUEST, "사용할 수 없는 토큰 입니다."),
 	UNABLE_CHANGE_GRADE(BAD_REQUEST, "동일한 등급으로 변경할 수 없습니다."),
+	INVALID_TICKET_ID(BAD_REQUEST, "잘못된 티켓 ID가 존재합니다."),
+	BAD_REQUEST_MOVIE_TIME(BAD_REQUEST, "동일한 상영시간만 결제 가능합니다."),
+	BAD_REQUEST_PAYMENT_COMPLETE(BAD_REQUEST, "처리할 결제 정보가 존재하지 않습니다."),
+	BAD_REQUEST_PAYMENT_READY(BAD_REQUEST, "이미 진행 중인 결제가 존재합니다."),
+	BAD_REQUEST_PAYMENT_CANCEL(BAD_REQUEST, "취소할 티켓이 존재하지 않습니다."),
 
 	/* 403 FORBIDDEN : 접근 권한 제한 */
 	VALID_USER_ID(FORBIDDEN, "해당 정보에 접근 권한이 존재하지 않습니다."),
@@ -39,7 +45,7 @@ public enum ErrorCode {
 	DELETED_MOVIE(CONFLICT, "이미 삭제된 영화 입니다.");
 
 	private final HttpStatus httpStatus;
-	private final String detail;
+	private String detail;
 
 	/* 400 BAD_REQUEST : 잘못된 요청 */
 	public static TicketingException throwMismatchPassword() {
@@ -58,6 +64,26 @@ public enum ErrorCode {
 		throw new TicketingException(UNABLE_CHANGE_GRADE);
 	}
 
+	public static TicketingException throwInvalidTicketId() {
+		throw new TicketingException(INVALID_TICKET_ID);
+	}
+
+	public static TicketingException throwBadRequestMovieTime() {
+		throw new TicketingException(BAD_REQUEST_MOVIE_TIME);
+	}
+
+	public static TicketingException throwBadRequestPaymentComplete() {
+		throw new TicketingException(BAD_REQUEST_PAYMENT_COMPLETE);
+	}
+
+	public static TicketingException throwBadRequestPaymentReady() {
+		throw new TicketingException(BAD_REQUEST_PAYMENT_READY);
+	}
+
+	public static TicketingException throwBadRequestPaymentCancel() {
+		throw new TicketingException(BAD_REQUEST_PAYMENT_CANCEL);
+	}
+
 	/* 403 FORBIDDEN : 접근 권한 제한 */
 	public static TicketingException throwValidUserId() {
 		throw new TicketingException(VALID_USER_ID);
@@ -113,4 +139,5 @@ public enum ErrorCode {
 		throw new TicketingException(DELETED_MOVIE);
 	}
 
+
 }

server/src/main/java/com/ticketing/server/global/exception/GlobalExceptionHandler.java

@@ -9,7 +9,6 @@ import static org.springframework.http.HttpStatus.UNAUTHORIZED;
 import static org.springframework.http.HttpStatus.UNSUPPORTED_MEDIA_TYPE;
 
 import java.util.ArrayList;
-import java.util.Iterator;
 import java.util.List;
 import java.util.Objects;
 import java.util.Set;
@@ -24,7 +23,6 @@ import org.springframework.http.ResponseEntity;
 import org.springframework.security.access.AccessDeniedException;
 import org.springframework.security.core.AuthenticationException;
 import org.springframework.validation.BindException;
-import org.springframework.validation.FieldError;
 import org.springframework.validation.ObjectError;
 import org.springframework.web.HttpMediaTypeNotSupportedException;
 import org.springframework.web.HttpRequestMethodNotSupportedException;

server/src/main/java/com/ticketing/server/global/redis/PaymentCache.java

@@ -0,0 +1,44 @@
+package com.ticketing.server.global.redis;
+
+import java.util.List;
+import javax.persistence.Column;
+import javax.persistence.GeneratedValue;
+import javax.persistence.Id;
+import lombok.AccessLevel;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+import org.springframework.data.redis.core.RedisHash;
+import org.springframework.data.redis.core.index.Indexed;
+
+@Getter
+@RedisHash("Payment")
+@NoArgsConstructor(access = AccessLevel.PROTECTED)
+public class PaymentCache {
+
+	@Id
+	@GeneratedValue
+	@Column(name = "payment_ready_id")
+	private Long id;
+
+	@Indexed
+	private String email;
+
+	private String movieTitle;
+
+	private String tid;
+
+	private List<Long> ticketIds;
+
+	private Long userAlternateId;
+
+	private Long paymentNumber;
+
+	public PaymentCache(String email, String movieTitle, String tid, List<Long> ticketIds, Long userAlternateId, Long paymentNumber) {
+		this.email = email;
+		this.movieTitle = movieTitle;
+		this.tid = tid;
+		this.ticketIds = ticketIds;
+		this.userAlternateId = userAlternateId;
+		this.paymentNumber = paymentNumber;
+	}
+}

server/src/main/java/com/ticketing/server/global/redis/PaymentCacheRepository.java

@@ -0,0 +1,10 @@
+package com.ticketing.server.global.redis;
+
+import java.util.Optional;
+import org.springframework.data.repository.CrudRepository;
+
+public interface PaymentCacheRepository extends CrudRepository<PaymentCache, Long> {
+
+	Optional<PaymentCache> findByEmail(String email);
+
+}

server/src/main/java/com/ticketing/server/global/redis/RedisConfig.java

@@ -3,10 +3,14 @@ package com.ticketing.server.global.redis;
 import org.springframework.beans.factory.annotation.Value;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
+import org.springframework.data.redis.cache.RedisCacheConfiguration;
+import org.springframework.data.redis.cache.RedisCacheManager;
 import org.springframework.data.redis.connection.RedisConnectionFactory;
 import org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory;
 import org.springframework.data.redis.core.RedisTemplate;
 import org.springframework.data.redis.repository.configuration.EnableRedisRepositories;
+import org.springframework.data.redis.serializer.GenericJackson2JsonRedisSerializer;
+import org.springframework.data.redis.serializer.RedisSerializationContext;
 import org.springframework.data.redis.serializer.StringRedisSerializer;
 import org.springframework.orm.jpa.JpaTransactionManager;
 import org.springframework.transaction.PlatformTransactionManager;
@@ -41,4 +45,21 @@ public class RedisConfig {
 		return new JpaTransactionManager();
 	}
 
+	@Bean
+	public RedisCacheManager redisCacheManager() {
+		RedisCacheConfiguration redisCacheConfiguration = RedisCacheConfiguration.defaultCacheConfig()
+			.serializeKeysWith(
+				RedisSerializationContext.SerializationPair.fromSerializer(
+					new StringRedisSerializer()))
+			.serializeValuesWith(
+				RedisSerializationContext.SerializationPair.fromSerializer(
+					new GenericJackson2JsonRedisSerializer()));
+
+		return RedisCacheManager.RedisCacheManagerBuilder
+			.fromConnectionFactory(redisConnectionFactory())
+			.cacheDefaults(redisCacheConfiguration)
+			.build();
+
+	}
+
 }

server/src/main/java/com/ticketing/server/global/security/WebSecurityConfig.java

@@ -53,8 +53,7 @@ public class WebSecurityConfig extends WebSecurityConfigurerAdapter {
 			.antMatchers(HttpMethod.POST, "/api/auth/token").permitAll()
 			.antMatchers(HttpMethod.POST, "/api/auth/refresh").permitAll()
 			.antMatchers(HttpMethod.POST, "/api/users").permitAll()
-			.antMatchers(HttpMethod.GET,"/api/movies").permitAll()
-			.antMatchers("/api/movieTimes/**").permitAll()
+			.antMatchers(HttpMethod.GET, "/api/movies").permitAll()
 			.antMatchers("/l7check").permitAll()
 			.antMatchers("/actuator/**").permitAll()
 			.antMatchers("/api/v3/", "/swagger-ui/**", "/swagger/", "/swagger-resources/**", "/v3/api-docs").permitAll()

server/src/main/java/com/ticketing/server/global/validator/constraints/NotEmptyCollection.java

@@ -0,0 +1,22 @@
+package com.ticketing.server.global.validator.constraints;
+
+import com.ticketing.server.global.validator.constraintvalidators.NotEmptyCollectionValidator;
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+import javax.validation.Constraint;
+import javax.validation.Payload;
+
+@Target({ElementType.FIELD, ElementType.PARAMETER})
+@Retention(RetentionPolicy.RUNTIME)
+@Constraint(validatedBy = NotEmptyCollectionValidator.class)
+public @interface NotEmptyCollection {
+
+	String message() default "목록이 존재하지 않습니다.";
+
+	Class<?>[] groups() default {};
+
+	Class<? extends Payload>[] payload() default {};
+
+}

server/src/main/java/com/ticketing/server/global/validator/constraintvalidators/NotEmptyCollectionValidator.java

@@ -0,0 +1,20 @@
+package com.ticketing.server.global.validator.constraintvalidators;
+
+import com.ticketing.server.global.validator.constraints.NotEmptyCollection;
+import java.util.Collection;
+import java.util.Objects;
+import javax.validation.ConstraintValidator;
+import javax.validation.ConstraintValidatorContext;
+
+public class NotEmptyCollectionValidator implements ConstraintValidator<NotEmptyCollection, Collection<Long>> {
+
+	@Override
+	public boolean isValid(Collection<Long> objects, ConstraintValidatorContext context) {
+		if (objects.isEmpty()) {
+			return false;
+		}
+
+		return objects.stream().allMatch(Objects::nonNull);
+	}
+
+}

server/src/main/java/com/ticketing/server/movie/application/TicketController.java

@@ -21,10 +21,12 @@ public class TicketController {
 
 	private final TicketService ticketService;
 
-	@GetMapping("payments/{paymentId}")
+	@GetMapping("/payments/{paymentId}")
 	public ResponseEntity<TicketDetailsResponse> findTicketsByPaymentId(@PathVariable("paymentId") @NotNull Long paymentId) {
 		TicketDetailsDTO tickets = ticketService.findTicketsByPaymentId(paymentId);
-		return ResponseEntity.status(HttpStatus.OK).body(tickets.toResponse());
+
+		return ResponseEntity.status(HttpStatus.OK)
+			.body(tickets.toResponse());
 	}
 
 }

server/src/main/java/com/ticketing/server/movie/application/request/TicketCancelRequest.java

@@ -0,0 +1,13 @@
+package com.ticketing.server.movie.application.request;
+
+import java.util.List;
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+
+@Getter
+@AllArgsConstructor
+public class TicketCancelRequest {
+
+	private final List<Long> ticketIds;
+
+}

server/src/main/java/com/ticketing/server/movie/application/request/TicketReservationRequest.java

@@ -0,0 +1,15 @@
+package com.ticketing.server.movie.application.request;
+
+import com.ticketing.server.global.validator.constraints.NotEmptyCollection;
+import java.util.List;
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+
+@Getter
+@AllArgsConstructor
+public class TicketReservationRequest {
+
+	@NotEmptyCollection
+	private List<Long> ticketIds;
+
+}

server/src/main/java/com/ticketing/server/movie/application/request/TicketSoldRequest.java

@@ -0,0 +1,19 @@
+package com.ticketing.server.movie.application.request;
+
+import com.ticketing.server.global.validator.constraints.NotEmptyCollection;
+import java.util.List;
+import javax.validation.constraints.NotNull;
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+
+@Getter
+@AllArgsConstructor
+public class TicketSoldRequest {
+
+	@NotNull
+	private Long paymentId;
+
+	@NotEmptyCollection
+	private List<Long> ticketIds;
+
+}

server/src/main/java/com/ticketing/server/movie/application/response/TicketCancelResponse.java

@@ -0,0 +1,13 @@
+package com.ticketing.server.movie.application.response;
+
+import java.util.List;
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+
+@Getter
+@AllArgsConstructor
+public class TicketCancelResponse {
+
+	private final List<Long> ticketIds;
+
+}

server/src/main/java/com/ticketing/server/movie/application/response/TicketReservationResponse.java

@@ -0,0 +1,25 @@
+package com.ticketing.server.movie.application.response;
+
+import com.ticketing.server.movie.service.dto.TicketReservationDTO;
+import java.util.List;
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+
+@Getter
+@AllArgsConstructor
+public class TicketReservationResponse {
+
+	private final String movieTitle;
+	private final List<TicketReservationDTO> tickets;
+
+	public int getTicketQuantity() {
+		return tickets.size();
+	}
+
+	public int getTotalPrice() {
+		return tickets.stream()
+			.mapToInt(TicketReservationDTO::getTicketPrice)
+			.sum();
+	}
+
+}

server/src/main/java/com/ticketing/server/movie/application/response/TicketSoldResponse.java

@@ -0,0 +1,15 @@
+package com.ticketing.server.movie.application.response;
+
+import com.ticketing.server.movie.service.dto.TicketSoldDTO;
+import java.util.List;
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+
+@Getter
+@AllArgsConstructor
+public class TicketSoldResponse {
+
+	private final Long paymentId;
+	private final List<TicketSoldDTO> soldDtoList;
+
+}

server/src/main/java/com/ticketing/server/movie/domain/Ticket.java

@@ -53,6 +53,38 @@ public class Ticket extends AbstractEntity {
 		this.status = TicketStatus.SALE;
 	}
 
+	public Ticket makeReservation() {
+		if (!TicketStatus.SALE.equals(status)) {
+			throw ErrorCode.throwDuplicatePayment();
+		}
+
+		status = TicketStatus.RESERVATION;
+		return this;
+	}
+
+	public Ticket makeSold(Long paymentId) {
+		if (TicketStatus.SOLD.equals(status)) {
+			throw ErrorCode.throwDuplicatePayment();
+		}
+
+		status = TicketStatus.SOLD;
+		this.paymentId = paymentId;
+		return this;
+	}
+
+	public Ticket cancel() {
+		if (!TicketStatus.RESERVATION.equals(status)) {
+			throw ErrorCode.throwBadRequestPaymentCancel();
+		}
+
+		status = TicketStatus.SALE;
+		return this;
+	}
+
+	public Long getMovieTimeId() {
+		return movieTime.getId();
+	}
+
 	public Integer getColumn() {
 		return this.seat.getSeatColumn();
 	}
@@ -85,5 +117,4 @@ public class Ticket extends AbstractEntity {
 		this.paymentId = id;
 	}
 
-
 }

server/src/main/java/com/ticketing/server/movie/domain/TicketStatus.java

@@ -2,15 +2,16 @@ package com.ticketing.server.movie.domain;
 
 import lombok.AllArgsConstructor;
 import lombok.Getter;
+import lombok.RequiredArgsConstructor;
 
 @Getter
-@AllArgsConstructor
+@RequiredArgsConstructor
 public enum TicketStatus {
 
 	SALE("판매가능"),
-	SCHEDULED("환불"),
+	RESERVATION("예약"),
 	SOLD("판매완료");
 
-	private String name;
+	private final String name;
 
 }

server/src/main/java/com/ticketing/server/movie/domain/repository/TicketRepository.java

@@ -21,4 +21,15 @@ public interface TicketRepository extends JpaRepository<Ticket, Long> {
 	)
 	List<Ticket> findTicketFetchJoinByPaymentId(@Param("paymentId") Long paymentId);
 
+	@Query(
+		value =
+			"SELECT t "
+				+ "FROM Ticket t "
+				+ "JOIN FETCH t.movieTime mt "
+				+ "JOIN FETCH t.seat s "
+				+ "JOIN FETCH s.theater th "
+				+ "WHERE t.id IN (:ticketIds) "
+	)
+	List<Ticket> findTicketFetchJoinByTicketIds(@Param("ticketIds") List<Long> ticketIds);
+
 }

server/src/main/java/com/ticketing/server/movie/service/TicketServiceImpl.java

@@ -1,8 +1,15 @@
 package com.ticketing.server.movie.service;
 
 import com.ticketing.server.global.exception.ErrorCode;
+import com.ticketing.server.global.validator.constraints.NotEmptyCollection;
+import com.ticketing.server.movie.domain.Ticket;
 import com.ticketing.server.movie.domain.repository.TicketRepository;
 import com.ticketing.server.movie.service.dto.TicketDetailsDTO;
+import com.ticketing.server.movie.service.dto.TicketReservationDTO;
+import com.ticketing.server.movie.service.dto.TicketSoldDTO;
+import com.ticketing.server.movie.service.dto.TicketsCancelDTO;
+import com.ticketing.server.movie.service.dto.TicketsReservationDTO;
+import com.ticketing.server.movie.service.dto.TicketsSoldDTO;
 import com.ticketing.server.movie.service.interfaces.TicketService;
 import com.ticketing.server.payment.service.dto.TicketDetailDTO;
 import java.util.List;
@@ -37,4 +44,65 @@ public class TicketServiceImpl implements TicketService {
 		return new TicketDetailsDTO(ticketDetails);
 	}
 
+	@Override
+	@Transactional
+	public TicketsReservationDTO ticketReservation(@NotEmptyCollection List<Long> ticketIds) {
+		List<Ticket> tickets = getTicketsByInTicketIds(ticketIds);
+
+		Long firstMovieTimeId = firstMovieTimeId(tickets);
+		List<TicketReservationDTO> reservationDtoList = tickets.stream()
+			.map(Ticket::makeReservation)
+			.filter(ticket -> firstMovieTimeId.equals(ticket.getMovieTimeId()))
+			.map(TicketReservationDTO::new)
+			.collect(Collectors.toList());
+
+		if (ticketIds.size() != reservationDtoList.size()) {
+			throw ErrorCode.throwBadRequestMovieTime();
+		}
+
+		return new TicketsReservationDTO(firstMovieTitle(tickets), reservationDtoList);
+	}
+
+	@Override
+	@Transactional
+	public TicketsSoldDTO ticketSold(@NotNull Long paymentId, @NotEmptyCollection List<Long> ticketIds) {
+		List<Ticket> tickets = getTicketsByInTicketIds(ticketIds);
+
+		List<TicketSoldDTO> soldDtoList = tickets.stream()
+			.map(ticket -> ticket.makeSold(paymentId))
+			.map(TicketSoldDTO::new)
+			.collect(Collectors.toList());
+
+		return new TicketsSoldDTO(paymentId, soldDtoList);
+	}
+
+	@Override
+	@Transactional
+	public TicketsCancelDTO ticketCancel(@NotEmptyCollection List<Long> ticketIds) {
+		List<Ticket> tickets = getTicketsByInTicketIds(ticketIds);
+		tickets.forEach(Ticket::cancel);
+
+		return new TicketsCancelDTO(ticketIds);
+	}
+
+	private List<Ticket> getTicketsByInTicketIds(List<Long> ticketIds) {
+		List<Ticket> tickets = ticketRepository.findTicketFetchJoinByTicketIds(ticketIds);
+
+		if (tickets.size() != ticketIds.size()) {
+			throw ErrorCode.throwInvalidTicketId();
+		}
+
+		return tickets;
+	}
+
+	private Long firstMovieTimeId(List<Ticket> tickets) {
+		Ticket ticket = tickets.get(0);
+		return ticket.getMovieTimeId();
+	}
+
+	private String firstMovieTitle(List<Ticket> tickets) {
+		Ticket ticket = tickets.get(0);
+		return ticket.getMovieTitle();
+	}
+
 }

server/src/main/java/com/ticketing/server/movie/service/dto/TicketReservationDTO.java

@@ -0,0 +1,19 @@
+package com.ticketing.server.movie.service.dto;
+
+import com.ticketing.server.movie.domain.Ticket;
+import lombok.AccessLevel;
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+
+@Getter
+@AllArgsConstructor(access = AccessLevel.PRIVATE)
+public class TicketReservationDTO {
+
+	private final Long ticketId;
+	private final Integer ticketPrice;
+
+	public TicketReservationDTO(Ticket ticket) {
+		this(ticket.getId(), ticket.getTicketPrice());
+	}
+
+}

server/src/main/java/com/ticketing/server/movie/service/dto/TicketSoldDTO.java

@@ -0,0 +1,19 @@
+package com.ticketing.server.movie.service.dto;
+
+import com.ticketing.server.movie.domain.Ticket;
+import lombok.AccessLevel;
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+
+@Getter
+@AllArgsConstructor(access = AccessLevel.PRIVATE)
+public class TicketSoldDTO {
+
+	private final Long ticketId;
+	private final Integer ticketPrice;
+
+	public TicketSoldDTO(Ticket ticket) {
+		this(ticket.getId(), ticket.getTicketPrice());
+	}
+
+}

server/src/main/java/com/ticketing/server/movie/service/dto/TicketsCancelDTO.java

@@ -0,0 +1,18 @@
+package com.ticketing.server.movie.service.dto;
+
+import com.ticketing.server.movie.application.response.TicketCancelResponse;
+import java.util.List;
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+
+@Getter
+@AllArgsConstructor
+public class TicketsCancelDTO {
+
+	private final List<Long> ticketIds;
+
+	public TicketCancelResponse toResponse() {
+		return new TicketCancelResponse(ticketIds);
+	}
+
+}

server/src/main/java/com/ticketing/server/movie/service/dto/TicketsReservationDTO.java

@@ -0,0 +1,19 @@
+package com.ticketing.server.movie.service.dto;
+
+import com.ticketing.server.movie.application.response.TicketReservationResponse;
+import java.util.List;
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+
+@Getter
+@AllArgsConstructor
+public class TicketsReservationDTO {
+
+	private final String movieTitle;
+	private final List<TicketReservationDTO> ticketReservationDtoList;
+
+	public TicketReservationResponse toResponse() {
+		return new TicketReservationResponse(movieTitle, ticketReservationDtoList);
+	}
+
+}

server/src/main/java/com/ticketing/server/movie/service/dto/TicketsSoldDTO.java

@@ -0,0 +1,19 @@
+package com.ticketing.server.movie.service.dto;
+
+import com.ticketing.server.movie.application.response.TicketSoldResponse;
+import java.util.List;
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+
+@Getter
+@AllArgsConstructor
+public class TicketsSoldDTO {
+
+	private final Long paymentId;
+	private final List<TicketSoldDTO> soldDtoList;
+
+	public TicketSoldResponse toResponse() {
+		return new TicketSoldResponse(paymentId, soldDtoList);
+	}
+
+}

server/src/main/java/com/ticketing/server/movie/service/interfaces/TicketService.java

@@ -1,10 +1,21 @@
 package com.ticketing.server.movie.service.interfaces;
 
+import com.ticketing.server.global.validator.constraints.NotEmptyCollection;
 import com.ticketing.server.movie.service.dto.TicketDetailsDTO;
+import com.ticketing.server.movie.service.dto.TicketsCancelDTO;
+import com.ticketing.server.movie.service.dto.TicketsReservationDTO;
+import com.ticketing.server.movie.service.dto.TicketsSoldDTO;
+import java.util.List;
 import javax.validation.constraints.NotNull;
 
 public interface TicketService {
 
 	TicketDetailsDTO findTicketsByPaymentId(@NotNull Long paymentId);
 
+	TicketsReservationDTO ticketReservation(@NotEmptyCollection List<Long> ticketIds);
+
+	TicketsSoldDTO ticketSold(@NotNull Long paymentId, @NotEmptyCollection List<Long> ticketIds);
+
+	TicketsCancelDTO ticketCancel(@NotEmptyCollection List<Long> ticketIds);
+
 }

server/src/main/java/com/ticketing/server/movie/setup/MovieSetupService.java

@@ -1,5 +1,6 @@
 package com.ticketing.server.movie.setup;
 
+import com.ticketing.server.global.redis.PaymentCache;
 import com.ticketing.server.movie.domain.Movie;
 import com.ticketing.server.movie.domain.MovieTime;
 import com.ticketing.server.movie.domain.Seat;
@@ -13,7 +14,6 @@ import com.ticketing.server.payment.domain.Payment;
 import com.ticketing.server.payment.domain.PaymentStatus;
 import com.ticketing.server.payment.domain.PaymentType;
 import com.ticketing.server.payment.domain.repository.PaymentRepository;
-import com.ticketing.server.payment.service.dto.CreatePaymentDTO;
 import com.ticketing.server.user.domain.User;
 import com.ticketing.server.user.domain.UserGrade;
 import com.ticketing.server.user.domain.repository.UserRepository;
@@ -119,8 +119,16 @@ MovieSetupService {
 		List<Ticket> tickets = ticketRepository.findAll();
 		Ticket ticket = tickets.get(0);
 		String title = ticket.getMovieTime().getMovie().getTitle();
-		CreatePaymentDTO createPaymentDto = new CreatePaymentDTO(user.getAlternateId(), title, PaymentType.KAKAO_PAY, PaymentStatus.COMPLETED, "2022-0710-4142", 30_000);
-		Payment payment = createPaymentDto.toEntity();
+		PaymentCache paymentCache = new PaymentCache(
+			user.getEmail(),
+			title,
+			"T2d03c9130bf237a9700",
+			List.of(1L, 2L),
+			user.getAlternateId(),
+			124124231513245L
+		);
+
+		Payment payment = new Payment(paymentCache, PaymentType.KAKAO_PAY, PaymentStatus.SOLD, 30_000);
 
 		paymentRepository.save(payment);
 

server/src/main/java/com/ticketing/server/payment/api/CoreFeignConfiguration.java

@@ -0,0 +1,20 @@
+package com.ticketing.server.payment.api;
+
+import feign.Logger;
+import feign.Logger.Level;
+import feign.codec.Encoder;
+import org.springframework.context.annotation.Bean;
+
+public class CoreFeignConfiguration {
+
+	@Bean
+	Logger.Level feignLoggerLevel() {
+		return Level.FULL;
+	}
+
+	@Bean
+	Encoder formEncoder() {
+		return new feign.form.FormEncoder();
+	}
+
+}

server/src/main/java/com/ticketing/server/payment/api/KakaoPayClient.java

@@ -0,0 +1,26 @@
+package com.ticketing.server.payment.api;
+
+import static org.springframework.http.MediaType.APPLICATION_FORM_URLENCODED_VALUE;
+
+import com.ticketing.server.payment.api.dto.requset.KakaoPayApproveRequest;
+import com.ticketing.server.payment.api.dto.requset.KakaoPayReadyRequest;
+import com.ticketing.server.payment.api.dto.response.KakaoPayApproveResponse;
+import com.ticketing.server.payment.api.dto.response.KakaoPayReadyResponse;
+import feign.Headers;
+import org.springframework.cloud.openfeign.FeignClient;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestHeader;
+
+@FeignClient(name = "kakaoPay", url = "https://kapi.kakao.com/v1", path = "/payment",
+	configuration = CoreFeignConfiguration.class)
+public interface KakaoPayClient {
+
+	@PostMapping(value = "/ready", consumes = APPLICATION_FORM_URLENCODED_VALUE)
+	@Headers("Content-Type: application/x-www-form-urlencoded;charset=utf-8")
+	KakaoPayReadyResponse ready(@RequestHeader(value = "Authorization") String authorization, KakaoPayReadyRequest request);
+
+	@PostMapping(value = "/approve", consumes = APPLICATION_FORM_URLENCODED_VALUE)
+	@Headers("Content-Type: application/x-www-form-urlencoded;charset=utf-8")
+	KakaoPayApproveResponse approve(@RequestHeader(value = "Authorization") String authorization, KakaoPayApproveRequest request);
+
+}

server/src/main/java/com/ticketing/server/payment/api/KakaoPayProperties.java

@@ -0,0 +1,40 @@
+package com.ticketing.server.payment.api;
+
+import com.ticketing.server.global.factory.YamlPropertySourceFactory;
+import lombok.Getter;
+import lombok.RequiredArgsConstructor;
+import org.springframework.boot.context.properties.ConfigurationProperties;
+import org.springframework.boot.context.properties.ConstructorBinding;
+import org.springframework.context.annotation.PropertySource;
+
+@Getter
+@RequiredArgsConstructor
+@ConstructorBinding
+@ConfigurationProperties(value = "api.kakao.pay")
+@PropertySource(value = "classpath:application.yml", factory = YamlPropertySourceFactory.class)
+public class KakaoPayProperties {
+
+	private final String url;
+	private final String approval;
+	private final String cancel;
+	private final String fail;
+	private final String prefix;
+	private final String key;
+
+	public String getApprovalUrl() {
+		return url + approval;
+	}
+
+	public String getCancelUrl() {
+		return url + cancel;
+	}
+
+	public String getFailUrl() {
+		return url + fail;
+	}
+
+	public String getAuthorization() {
+		return prefix + " " + key;
+	}
+
+}

server/src/main/java/com/ticketing/server/payment/api/MovieClient.java

@@ -1,10 +1,21 @@
 package com.ticketing.server.payment.api;
 
+import com.ticketing.server.movie.application.request.TicketCancelRequest;
+import com.ticketing.server.movie.application.request.TicketReservationRequest;
+import com.ticketing.server.movie.application.response.TicketCancelResponse;
 import com.ticketing.server.movie.application.response.TicketDetailsResponse;
+import com.ticketing.server.movie.application.response.TicketReservationResponse;
+import com.ticketing.server.movie.application.request.TicketSoldRequest;
+import com.ticketing.server.movie.application.response.TicketSoldResponse;
 import javax.validation.constraints.NotNull;
 
 public interface MovieClient {
 
 	TicketDetailsResponse getTicketsByPaymentId(@NotNull Long paymentId);
 
+	TicketReservationResponse ticketReservation(@NotNull TicketReservationRequest request);
+
+	TicketSoldResponse ticketSold(@NotNull TicketSoldRequest request);
+
+	TicketCancelResponse ticketCancel(@NotNull TicketCancelRequest request);
 }

server/src/main/java/com/ticketing/server/payment/api/dto/SnakeCaseStrategy.java

@@ -0,0 +1,12 @@
+package com.ticketing.server.payment.api.dto;
+
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonInclude.Include;
+import com.fasterxml.jackson.databind.PropertyNamingStrategies;
+import com.fasterxml.jackson.databind.annotation.JsonNaming;
+
+@JsonNaming(value = PropertyNamingStrategies.SnakeCaseStrategy.class)
+@JsonInclude(Include.NON_NULL)
+public class SnakeCaseStrategy {
+
+}

server/src/main/java/com/ticketing/server/payment/api/dto/requset/KakaoPayApproveRequest.java

@@ -0,0 +1,50 @@
+package com.ticketing.server.payment.api.dto.requset;
+
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonInclude.Include;
+import javax.validation.constraints.NotEmpty;
+import lombok.Getter;
+
+@Getter
+@JsonInclude(Include.NON_NULL)
+public class KakaoPayApproveRequest {
+
+	// 가맹점 코드 현재는 테스트 값
+	@NotEmpty
+	private String cid = "TC0ONETIME";
+
+	@feign.form.FormProperty("cid_secret")
+	private String cidSecret;
+
+	// 결제 고유 번호 ready res 에 포함
+	@NotEmpty
+	private String tid;
+
+	// 주문번호 - 결제 예매번호?
+	@NotEmpty
+	@feign.form.FormProperty("partner_order_id")
+	private String partnerOrderId;
+
+	// 가맹점 회원 id - user 대체 ID
+	@NotEmpty
+	@feign.form.FormProperty("partner_user_id")
+	private String partnerUserId;
+
+	// 결제승인 요청 인증 토큰
+	@NotEmpty
+	@feign.form.FormProperty("pg_token")
+	private String pgToken;
+
+	private String payload;
+
+	@feign.form.FormProperty("total_amount")
+	private Integer totalAmount;
+
+	public KakaoPayApproveRequest(String tid, String partnerOrderId, String partnerUserId, String pgToken) {
+		this.tid = tid;
+		this.partnerOrderId = partnerOrderId;
+		this.partnerUserId = partnerUserId;
+		this.pgToken = pgToken;
+	}
+
+}

server/src/main/java/com/ticketing/server/payment/api/dto/requset/KakaoPayReadyRequest.java

@@ -0,0 +1,92 @@
+package com.ticketing.server.payment.api.dto.requset;
+
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonInclude.Include;
+import javax.validation.constraints.NotEmpty;
+import javax.validation.constraints.NotNull;
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+@Getter
+@NoArgsConstructor
+@AllArgsConstructor
+@JsonInclude(Include.NON_NULL)
+public class KakaoPayReadyRequest {
+
+	// 가맹점 코드
+	@NotEmpty
+	private String cid = "TC0ONETIME";
+
+	// 가맹점 코드 인증키
+	@feign.form.FormProperty("cid_secret")
+	private String cidSecret;
+
+	// 가맹점 주문번호 - 결제 예매번호?
+	@NotEmpty
+	@feign.form.FormProperty("partner_order_id")
+	private String partnerOrderId;
+
+	// 가맹점 회원 id - user 대체 ID
+	@NotEmpty
+	@feign.form.FormProperty("partner_user_id")
+	private String partnerUserId;
+
+	// 상품명 - 영화제목
+	@NotEmpty
+	@feign.form.FormProperty("item_name")
+	private String itemName;
+
+	// 상품코드
+	@feign.form.FormProperty("item_code")
+	private String itemCode;
+
+	// 상품수량 - 티켓 수량
+	@NotNull
+	private Integer quantity;
+
+	// 상품 총액 - 티켓 금액 합계
+	@NotNull
+	@feign.form.FormProperty("total_amount")
+	private Integer totalAmount;
+
+	// 상품 비과세 - 0원으로 일단 일괄처리
+	@NotNull
+	@feign.form.FormProperty("tax_free_amount")
+	private Integer taxFreeAmount = 0;
+
+	// 상품 부가세 금액
+	@feign.form.FormProperty("vat_amount")
+	private Integer vatAmount;
+
+	// 컵 보증금
+	@feign.form.FormProperty("green_deposit")
+	private Integer greenDeposit;
+
+	// 결제 성공 시 redirect URL - json 반환 용 URL ?
+	@NotNull
+	@feign.form.FormProperty("approval_url")
+	private String approvalUrl;
+
+	// 결제 취소 시 redirect URL
+	@NotNull
+	@feign.form.FormProperty("cancel_url")
+	private String cancelUrl;
+
+	// 결제 실패 시 redirect URL
+	@NotNull
+	@feign.form.FormProperty("fail_url")
+	private String failUrl;
+
+	public KakaoPayReadyRequest(String partnerOrderId, String partnerUserId, String itemName, Integer quantity,
+		Integer totalAmount, String approvalUrl, String cancelUrl, String failUrl) {
+		this.partnerOrderId = partnerOrderId;
+		this.partnerUserId = partnerUserId;
+		this.itemName = itemName;
+		this.quantity = quantity;
+		this.totalAmount = totalAmount;
+		this.approvalUrl = approvalUrl;
+		this.cancelUrl = cancelUrl;
+		this.failUrl = failUrl;
+	}
+}

server/src/main/java/com/ticketing/server/payment/api/dto/response/Amount.java

@@ -0,0 +1,27 @@
+package com.ticketing.server.payment.api.dto.response;
+
+import com.ticketing.server.payment.api.dto.SnakeCaseStrategy;
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+import lombok.ToString;
+
+@Getter
+@NoArgsConstructor
+@AllArgsConstructor
+@ToString
+public class Amount extends SnakeCaseStrategy {
+
+	private Integer total;
+
+	private Integer taxFree;
+
+	private Integer vat;
+
+	private Integer point;
+
+	private Integer discount;
+
+	private Integer greenDeposit;
+
+}

server/src/main/java/com/ticketing/server/payment/api/dto/response/CardInfo.java

@@ -0,0 +1,45 @@
+package com.ticketing.server.payment.api.dto.response;
+
+import com.ticketing.server.payment.api.dto.SnakeCaseStrategy;
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+import lombok.ToString;
+
+@Getter
+@NoArgsConstructor
+@AllArgsConstructor
+@ToString
+public class CardInfo extends SnakeCaseStrategy {
+
+	private String purchaseCorp;
+
+	private String purchaseCorpCode;
+
+	private String issuerCorp;
+
+	private String issuerCorpCode;
+
+	private String kakaopayPurchaseCorp;
+
+	private String kakaopayPurchaseCorpCode;
+
+	private String kakaopayIssuerCorp;
+
+	private String kakaopayIssuerCorpCode;
+
+	private String bin;
+
+	private String cardType;
+
+	private String installMonth;
+
+	private String approvedId;
+
+	private String cardMid;
+
+	private String interestFreeInstall;
+
+	private String cardItemCode;
+
+}

server/src/main/java/com/ticketing/server/payment/api/dto/response/KakaoPayApproveResponse.java

@@ -0,0 +1,51 @@
+package com.ticketing.server.payment.api.dto.response;
+
+
+import com.ticketing.server.payment.api.dto.SnakeCaseStrategy;
+import java.time.LocalDateTime;
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+import lombok.ToString;
+
+@Getter
+@NoArgsConstructor
+@AllArgsConstructor
+@ToString
+public class KakaoPayApproveResponse extends SnakeCaseStrategy {
+
+	private String aid;
+
+	private String tid;
+
+	private String cid;
+
+	private String sid;
+
+	private String partnerOrderId;
+
+	private String partnerUserId;
+
+	private String paymentMethodType;
+
+	private Amount amount;
+
+	private CardInfo cardInfo;
+
+	private String itemName;
+
+	private String itemCode;
+
+	private Integer quantity;
+
+	private LocalDateTime createdAt;
+
+	private LocalDateTime approvedAt;
+
+	private String payload;
+
+	public Integer getTotalAmount() {
+		return amount.getTotal();
+	}
+
+}

server/src/main/java/com/ticketing/server/payment/api/dto/response/KakaoPayReadyResponse.java

@@ -0,0 +1,37 @@
+package com.ticketing.server.payment.api.dto.response;
+
+import com.ticketing.server.payment.api.dto.SnakeCaseStrategy;
+import java.time.LocalDateTime;
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+import lombok.ToString;
+
+@Getter
+@NoArgsConstructor
+@AllArgsConstructor
+@ToString
+public class KakaoPayReadyResponse extends SnakeCaseStrategy {
+
+	// 결제 고유 번호
+	private String tid;
+
+	// 요청 클라이언트가 모바일 앱일 경우
+	private String nextRedirectAppUrl;
+
+	// 요청 클라이언트가 모바일 웹일 경우
+	private String nextRedirectMobileUrl;
+
+	// 요청 클라이언트가 PC 웹일 경우
+	private String nextRedirectPcUrl;
+
+	// 카카오페이 결제 화면으로 이동하는 Android 앱 스킴
+	private String androidAppScheme;
+
+	// 카카오페이 결제 화면으로 이동하는 IOS 앱 스킴
+	private String iosAppScheme;
+
+	// 결제 준비 요청 시간
+	private LocalDateTime createAt;
+
+}

server/src/main/java/com/ticketing/server/payment/api/impl/MovieClientImpl.java

@@ -1,7 +1,16 @@
 package com.ticketing.server.payment.api.impl;
 
+import com.ticketing.server.movie.application.request.TicketCancelRequest;
+import com.ticketing.server.movie.application.request.TicketReservationRequest;
+import com.ticketing.server.movie.application.request.TicketSoldRequest;
+import com.ticketing.server.movie.application.response.TicketCancelResponse;
 import com.ticketing.server.movie.application.response.TicketDetailsResponse;
+import com.ticketing.server.movie.application.response.TicketReservationResponse;
+import com.ticketing.server.movie.application.response.TicketSoldResponse;
 import com.ticketing.server.movie.service.dto.TicketDetailsDTO;
+import com.ticketing.server.movie.service.dto.TicketsCancelDTO;
+import com.ticketing.server.movie.service.dto.TicketsReservationDTO;
+import com.ticketing.server.movie.service.dto.TicketsSoldDTO;
 import com.ticketing.server.movie.service.interfaces.TicketService;
 import com.ticketing.server.payment.api.MovieClient;
 import javax.validation.constraints.NotNull;
@@ -22,4 +31,22 @@ public class MovieClientImpl implements MovieClient {
 		return ticketDetails.toResponse();
 	}
 
+	@Override
+	public TicketReservationResponse ticketReservation(@NotNull TicketReservationRequest request) {
+		TicketsReservationDTO ticketReservationsDto = ticketService.ticketReservation(request.getTicketIds());
+		return ticketReservationsDto.toResponse();
+	}
+
+	@Override
+	public TicketSoldResponse ticketSold(@NotNull TicketSoldRequest request) {
+		TicketsSoldDTO ticketsSoldDto = ticketService.ticketSold(request.getPaymentId(), request.getTicketIds());
+		return ticketsSoldDto.toResponse();
+	}
+
+	@Override
+	public TicketCancelResponse ticketCancel(@NotNull TicketCancelRequest request) {
+		TicketsCancelDTO ticketsCancelDto = ticketService.ticketCancel(request.getTicketIds());
+		return ticketsCancelDto.toResponse();
+	}
+
 }

server/src/main/java/com/ticketing/server/payment/application/PaymentController.java

@@ -1,20 +1,32 @@
 package com.ticketing.server.payment.application;
 
+import com.ticketing.server.payment.application.request.PaymentReadyRequest;
 import com.ticketing.server.payment.application.response.PaymentDetailResponse;
 import com.ticketing.server.payment.application.response.SimplePaymentsResponse;
+import com.ticketing.server.payment.service.dto.PaymentCancelDTO;
+import com.ticketing.server.payment.application.response.PaymentCancelResponse;
+import com.ticketing.server.payment.service.dto.PaymentCompleteDTO;
+import com.ticketing.server.payment.application.response.PaymentCompleteResponse;
 import com.ticketing.server.payment.service.dto.PaymentDetailDTO;
+import com.ticketing.server.payment.service.dto.PaymentReadyDTO;
 import com.ticketing.server.payment.service.dto.SimplePaymentsDTO;
 import com.ticketing.server.payment.service.interfaces.PaymentApisService;
 import com.ticketing.server.payment.service.interfaces.PaymentService;
 import com.ticketing.server.user.domain.UserGrade;
+import javax.validation.Valid;
 import javax.validation.constraints.NotNull;
 import lombok.RequiredArgsConstructor;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.ResponseEntity;
 import org.springframework.security.access.annotation.Secured;
+import org.springframework.security.core.annotation.AuthenticationPrincipal;
+import org.springframework.security.core.userdetails.UserDetails;
 import org.springframework.validation.annotation.Validated;
 import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestParam;
 import org.springframework.web.bind.annotation.RestController;
 
 @RestController
@@ -44,4 +56,33 @@ public class PaymentController {
 			.body(paymentDetail.toResponse());
 	}
 
+	@PostMapping("/ready")
+	@Secured(UserGrade.ROLES.USER)
+	public ResponseEntity<PaymentReadyDTO> ready(@RequestBody @Valid PaymentReadyRequest request) {
+		PaymentReadyDTO paymentReadyDto = paymentApisService.ready(request.getTicketIds());
+
+		return ResponseEntity.status(HttpStatus.OK)
+			.body(paymentReadyDto);
+	}
+
+	@GetMapping("/complete")
+	@Secured(UserGrade.ROLES.USER)
+	public ResponseEntity<PaymentCompleteResponse> complete(
+		@AuthenticationPrincipal UserDetails userRequest,
+		@RequestParam("pg_token") String pgToken) {
+		PaymentCompleteDTO paymentCompleteDto = paymentApisService.complete(userRequest.getUsername(), pgToken);
+
+		return ResponseEntity.status(HttpStatus.OK)
+			.body(paymentCompleteDto.toResponse());
+	}
+
+	@GetMapping("/cancel")
+	@Secured(UserGrade.ROLES.USER)
+	public ResponseEntity<PaymentCancelResponse> cancel(@AuthenticationPrincipal UserDetails userRequest) {
+		PaymentCancelDTO paymentCancelDto = paymentApisService.cancel(userRequest.getUsername());
+
+		return ResponseEntity.status(HttpStatus.OK)
+			.body(paymentCancelDto.toResponse());
+	}
+
 }

server/src/main/java/com/ticketing/server/payment/application/request/PaymentReadyRequest.java

@@ -0,0 +1,13 @@
+package com.ticketing.server.payment.application.request;
+
+import com.ticketing.server.global.validator.constraints.NotEmptyCollection;
+import java.util.List;
+import lombok.Getter;
+
+@Getter
+public class PaymentReadyRequest {
+
+	@NotEmptyCollection
+	private List<Long> ticketIds;
+
+}

server/src/main/java/com/ticketing/server/payment/application/response/PaymentCancelResponse.java

@@ -0,0 +1,16 @@
+package com.ticketing.server.payment.application.response;
+
+import java.util.List;
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+
+@Getter
+@AllArgsConstructor
+public class PaymentCancelResponse {
+
+	private final String email;
+	private final String movieTitle;
+	private final String tid;
+	private final List<Long> ticketIds;
+
+}

server/src/main/java/com/ticketing/server/payment/application/response/PaymentCompleteResponse.java

@@ -0,0 +1,16 @@
+package com.ticketing.server.payment.application.response;
+
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+
+@Getter
+@AllArgsConstructor
+public class PaymentCompleteResponse {
+
+	private final String email;
+	private final String tid;
+	private final String movieTitle;
+	private final Integer quantity;
+	private final Integer totalAmount;
+
+}

server/src/main/java/com/ticketing/server/payment/domain/Payment.java

@@ -1,6 +1,7 @@
 package com.ticketing.server.payment.domain;
 
 import com.ticketing.server.global.dto.repository.AbstractEntity;
+import com.ticketing.server.global.redis.PaymentCache;
 import javax.persistence.Column;
 import javax.persistence.Entity;
 import javax.persistence.EnumType;
@@ -24,6 +25,10 @@ public class Payment extends AbstractEntity {
 	@Column(name = "movie_title", nullable = false)
 	private String movieTitle;
 
+	@NotEmpty
+	@Column(name = "tid", nullable = false)
+	private String tid;
+
 	@NotNull
 	@Column(name = "type", nullable = false)
 	@Enumerated(value = EnumType.STRING)
@@ -45,9 +50,22 @@ public class Payment extends AbstractEntity {
 	@Column(name = "total_price", nullable = false)
 	private Integer totalPrice;
 
-	public Payment(Long userAlternateId, String movieTitle, PaymentType type, PaymentStatus status, String paymentNumber, Integer totalPrice) {
+	public Payment(PaymentCache paymentCache, PaymentType type, PaymentStatus status, Integer totalAmount) {
+		this(
+			paymentCache.getUserAlternateId(),
+			paymentCache.getMovieTitle(),
+			paymentCache.getTid(),
+			type,
+			status,
+			paymentCache.getPaymentNumber().toString(),
+			totalAmount
+		);
+	}
+
+	private Payment(Long userAlternateId, String movieTitle, String tid, PaymentType type, PaymentStatus status, String paymentNumber, Integer totalPrice) {
 		this.userAlternateId = userAlternateId;
 		this.movieTitle = movieTitle;
+		this.tid = tid;
 		this.type = type;
 		this.status = status;
 		this.paymentNumber = paymentNumber;

server/src/main/java/com/ticketing/server/payment/domain/PaymentStatus.java

@@ -1,5 +1,15 @@
 package com.ticketing.server.payment.domain;
 
+import lombok.Getter;
+import lombok.RequiredArgsConstructor;
+
+@Getter
+@RequiredArgsConstructor
 public enum PaymentStatus {
-	COMPLETED, REFUNDED, FAILED
+
+	SOLD("판매"),
+	REFUNDED("환불");
+
+	private final String statusName;
+
 }

server/src/main/java/com/ticketing/server/payment/service/PaymentApisServiceImpl.java

@@ -1,14 +1,35 @@
 package com.ticketing.server.payment.service;
 
+import com.ticketing.server.global.dto.SequenceGenerator;
 import com.ticketing.server.global.exception.ErrorCode;
+import com.ticketing.server.global.redis.PaymentCache;
+import com.ticketing.server.global.redis.PaymentCacheRepository;
+import com.ticketing.server.global.validator.constraints.NotEmptyCollection;
+import com.ticketing.server.movie.application.request.TicketCancelRequest;
+import com.ticketing.server.movie.application.request.TicketReservationRequest;
+import com.ticketing.server.movie.application.request.TicketSoldRequest;
 import com.ticketing.server.movie.application.response.TicketDetailsResponse;
+import com.ticketing.server.movie.application.response.TicketReservationResponse;
+import com.ticketing.server.payment.api.KakaoPayClient;
+import com.ticketing.server.payment.api.KakaoPayProperties;
 import com.ticketing.server.payment.api.MovieClient;
 import com.ticketing.server.payment.api.UserClient;
+import com.ticketing.server.payment.api.dto.requset.KakaoPayApproveRequest;
+import com.ticketing.server.payment.api.dto.requset.KakaoPayReadyRequest;
+import com.ticketing.server.payment.api.dto.response.KakaoPayApproveResponse;
+import com.ticketing.server.payment.api.dto.response.KakaoPayReadyResponse;
 import com.ticketing.server.payment.api.dto.response.UserDetailResponse;
 import com.ticketing.server.payment.domain.Payment;
+import com.ticketing.server.payment.domain.PaymentStatus;
+import com.ticketing.server.payment.domain.PaymentType;
 import com.ticketing.server.payment.domain.repository.PaymentRepository;
+import com.ticketing.server.payment.service.dto.PaymentCancelDTO;
+import com.ticketing.server.payment.service.dto.PaymentCompleteDTO;
 import com.ticketing.server.payment.service.dto.PaymentDetailDTO;
+import com.ticketing.server.payment.service.dto.PaymentReadyDTO;
 import com.ticketing.server.payment.service.interfaces.PaymentApisService;
+import java.util.List;
+import javax.validation.constraints.NotEmpty;
 import javax.validation.constraints.NotNull;
 import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
@@ -23,9 +44,16 @@ import org.springframework.validation.annotation.Validated;
 @Slf4j
 public class PaymentApisServiceImpl implements PaymentApisService {
 
+	private final KakaoPayProperties kakaoPayProperties;
+
 	private final PaymentRepository paymentRepository;
+	private final PaymentCacheRepository paymentCacheRepository;
+
 	private final MovieClient movieClient;
 	private final UserClient userClient;
+	private final KakaoPayClient kakaoPayClient;
+
+	private final SequenceGenerator sequenceGenerator;
 
 	@Override
 	public PaymentDetailDTO findPaymentDetail(@NotNull Long paymentId) {
@@ -41,4 +69,88 @@ public class PaymentApisServiceImpl implements PaymentApisService {
 		return new PaymentDetailDTO(payment, tickets);
 	}
 
+	@Override
+	@Transactional
+	public PaymentReadyDTO ready(@NotEmptyCollection List<Long> ticketIds) {
+		// User 정보 조회 - user 의 대체 키가 필요함.
+		UserDetailResponse userResponse = userClient.detail();
+		Long userAlternateId = userResponse.getUserAlternateId();
+
+		// Ticket 정보 조회 - 영화제목, 티켓가격이 필요함.
+		TicketReservationResponse ticketResponse = movieClient.ticketReservation(new TicketReservationRequest(ticketIds));
+		String movieTitle = ticketResponse.getMovieTitle();
+
+		// 예매번호 자동생성
+		Long paymentNumber = sequenceGenerator.generateId();
+
+		KakaoPayReadyRequest request = new KakaoPayReadyRequest(
+			paymentNumber.toString(),
+			userAlternateId.toString(),
+			movieTitle,
+			ticketResponse.getTicketQuantity(),
+			ticketResponse.getTotalPrice(),
+			kakaoPayProperties.getApprovalUrl(),
+			kakaoPayProperties.getCancelUrl(),
+			kakaoPayProperties.getFailUrl()
+		);
+		KakaoPayReadyResponse response = kakaoPayClient.ready(kakaoPayProperties.getAuthorization(), request);
+
+		PaymentCache paymentReady = new PaymentCache(
+			userResponse.getEmail(),
+			movieTitle,
+			response.getTid(),
+			ticketIds,
+			userAlternateId,
+			paymentNumber
+		);
+
+		paymentCacheRepository.findByEmail(userResponse.getEmail())
+			.ifPresentOrElse(
+				paymentCache -> ErrorCode.throwBadRequestPaymentReady()
+				, () -> paymentCacheRepository.save(paymentReady)
+			);
+
+		return new PaymentReadyDTO(response);
+	}
+
+	@Override
+	@Transactional
+	public PaymentCompleteDTO complete(@NotEmpty String email, @NotEmpty String pgToken) {
+		PaymentCache paymentCache = paymentCacheRepository.findByEmail(email)
+			.orElseThrow(ErrorCode::throwBadRequestPaymentComplete);
+
+		String paymentNumberToString = paymentCache.getPaymentNumber().toString();
+		String userAlternateIdToString = paymentCache.getUserAlternateId().toString();
+		KakaoPayApproveRequest kakaoPayApproveRequest = new KakaoPayApproveRequest(
+			paymentCache.getTid(),
+			paymentNumberToString,
+			userAlternateIdToString,
+			pgToken
+		);
+		KakaoPayApproveResponse kakaoPayApproveResponse = kakaoPayClient.approve(
+			kakaoPayProperties.getAuthorization(),
+			kakaoPayApproveRequest
+		);
+
+		Payment payment = new Payment(paymentCache, PaymentType.KAKAO_PAY, PaymentStatus.SOLD, kakaoPayApproveResponse.getTotalAmount());
+		payment = paymentRepository.save(payment);
+
+		movieClient.ticketSold(new TicketSoldRequest(payment.getId(), paymentCache.getTicketIds()));
+		paymentCacheRepository.delete(paymentCache);
+
+		return new PaymentCompleteDTO(email, kakaoPayApproveResponse);
+	}
+
+	@Override
+	@Transactional
+	public PaymentCancelDTO cancel(@NotEmpty String email) {
+		PaymentCache paymentCache = paymentCacheRepository.findByEmail(email)
+			.orElseThrow(ErrorCode::throwBadRequestPaymentComplete);
+
+		movieClient.ticketCancel(new TicketCancelRequest(paymentCache.getTicketIds()));
+		paymentCacheRepository.delete(paymentCache);
+
+		return new PaymentCancelDTO(paymentCache);
+	}
+
 }

server/src/main/java/com/ticketing/server/payment/service/dto/CreatePaymentDTO.java

@@ -1,32 +0,0 @@
-package com.ticketing.server.payment.service.dto;
-
-import com.ticketing.server.payment.domain.Payment;
-import com.ticketing.server.payment.domain.PaymentStatus;
-import com.ticketing.server.payment.domain.PaymentType;
-import lombok.AllArgsConstructor;
-import lombok.Getter;
-
-@Getter
-@AllArgsConstructor
-public class CreatePaymentDTO {
-
-	private final Long userAlternateId;
-	private final String movieTitle;
-	private final PaymentType type;
-	private final PaymentStatus status;
-	private final String paymentNumber;
-	private final Integer totalPrice;
-
-	public Payment toEntity() {
-		return new Payment
-			(
-				this.getUserAlternateId(),
-				this.getMovieTitle(),
-				this.getType(),
-				this.getStatus(),
-				this.getPaymentNumber(),
-				this.getTotalPrice()
-			);
-	}
-
-}

server/src/main/java/com/ticketing/server/payment/service/dto/PaymentCancelDTO.java

@@ -0,0 +1,32 @@
+package com.ticketing.server.payment.service.dto;
+
+import com.ticketing.server.global.redis.PaymentCache;
+import com.ticketing.server.payment.application.response.PaymentCancelResponse;
+import java.util.List;
+import lombok.AccessLevel;
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+
+@Getter
+@AllArgsConstructor(access = AccessLevel.PRIVATE)
+public class PaymentCancelDTO {
+
+	private final String email;
+	private final String movieTitle;
+	private final String tid;
+	private final List<Long> ticketIds;
+
+	public PaymentCancelDTO(PaymentCache paymentCache) {
+		this(
+			paymentCache.getEmail(),
+			paymentCache.getMovieTitle(),
+			paymentCache.getTid(),
+			paymentCache.getTicketIds()
+		);
+	}
+
+	public PaymentCancelResponse toResponse() {
+		return new PaymentCancelResponse(email, movieTitle, tid, ticketIds);
+	}
+
+}

server/src/main/java/com/ticketing/server/payment/service/dto/PaymentCompleteDTO.java

@@ -0,0 +1,33 @@
+package com.ticketing.server.payment.service.dto;
+
+import com.ticketing.server.payment.api.dto.response.KakaoPayApproveResponse;
+import com.ticketing.server.payment.application.response.PaymentCompleteResponse;
+import javax.validation.constraints.NotEmpty;
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+
+@Getter
+@AllArgsConstructor
+public class PaymentCompleteDTO {
+
+	private final String email;
+	private final String tid;
+	private final String movieTitle;
+	private final Integer quantity;
+	private final Integer totalAmount;
+
+	public PaymentCompleteDTO(@NotEmpty String email, KakaoPayApproveResponse kakaoPayApproveResponse) {
+		this(
+			email,
+			kakaoPayApproveResponse.getTid(),
+			kakaoPayApproveResponse.getItemName(),
+			kakaoPayApproveResponse.getQuantity(),
+			kakaoPayApproveResponse.getTotalAmount()
+		);
+	}
+
+	public PaymentCompleteResponse toResponse() {
+		return new PaymentCompleteResponse(email, tid, movieTitle, quantity, totalAmount);
+	}
+
+}

server/src/main/java/com/ticketing/server/payment/service/dto/PaymentReadyDTO.java

@@ -0,0 +1,40 @@
+package com.ticketing.server.payment.service.dto;
+
+import com.ticketing.server.payment.api.dto.response.KakaoPayReadyResponse;
+import lombok.AccessLevel;
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+
+@Getter
+@AllArgsConstructor(access = AccessLevel.PRIVATE)
+public class PaymentReadyDTO {
+
+	// 결제 고유 번호
+	private String tid;
+
+	// 요청 클라이언트가 모바일 앱일 경우
+	private String nextRedirectAppUrl;
+
+	// 요청 클라이언트가 모바일 웹일 경우
+	private String nextRedirectMobileUrl;
+
+	// 요청 클라이언트가 PC 웹일 경우
+	private String nextRedirectPcUrl;
+
+	// 카카오페이 결제 화면으로 이동하는 Android 앱 스킴
+	private String androidAppScheme;
+
+	// 카카오페이 결제 화면으로 이동하는 IOS 앱 스킴
+	private String iosAppScheme;
+
+	public PaymentReadyDTO(KakaoPayReadyResponse response) {
+		this(
+			response.getTid(),
+			response.getNextRedirectAppUrl(),
+			response.getNextRedirectMobileUrl(),
+			response.getNextRedirectPcUrl(),
+			response.getAndroidAppScheme(),
+			response.getIosAppScheme()
+		);
+	}
+}

server/src/main/java/com/ticketing/server/payment/service/interfaces/PaymentApisService.java

@@ -1,9 +1,22 @@
 package com.ticketing.server.payment.service.interfaces;
 
+import com.ticketing.server.global.validator.constraints.NotEmptyCollection;
+import com.ticketing.server.payment.service.dto.PaymentCancelDTO;
+import com.ticketing.server.payment.service.dto.PaymentCompleteDTO;
 import com.ticketing.server.payment.service.dto.PaymentDetailDTO;
+import com.ticketing.server.payment.service.dto.PaymentReadyDTO;
+import java.util.List;
+import javax.validation.constraints.NotEmpty;
 import javax.validation.constraints.NotNull;
 
 public interface PaymentApisService {
 
 	PaymentDetailDTO findPaymentDetail(@NotNull Long paymentId);
+
+	PaymentReadyDTO ready(@NotEmptyCollection List<Long> ticketIds);
+
+	PaymentCompleteDTO complete(@NotEmpty String email, @NotEmpty String pgToken);
+
+	PaymentCancelDTO cancel(@NotEmpty String email);
+
 }

server/src/main/java/com/ticketing/server/user/application/UserController.java

@@ -9,6 +9,7 @@ import com.ticketing.server.user.application.request.UserChangePasswordRequest;
 import com.ticketing.server.user.application.request.UserDeleteRequest;
 import com.ticketing.server.user.application.response.PaymentsResponse;
 import com.ticketing.server.user.application.response.SignUpResponse;
+import com.ticketing.server.user.application.response.UserChangeGradeResponse;
 import com.ticketing.server.user.application.response.UserChangePasswordResponse;
 import com.ticketing.server.user.application.response.UserDeleteResponse;
 import com.ticketing.server.user.application.response.UserDetailResponse;

server/src/main/java/com/ticketing/server/user/application/response/UserChangeGradeResponse.java

@@ -1,4 +1,4 @@
-package com.ticketing.server.user.application;
+package com.ticketing.server.user.application.response;
 
 import com.ticketing.server.user.domain.UserGrade;
 import lombok.AllArgsConstructor;

server/src/main/java/com/ticketing/server/user/domain/ChangeGradeDTO.java

@@ -1,6 +1,6 @@
 package com.ticketing.server.user.domain;
 
-import com.ticketing.server.user.application.UserChangeGradeResponse;
+import com.ticketing.server.user.application.response.UserChangeGradeResponse;
 import lombok.AllArgsConstructor;
 import lombok.Getter;
 

server/src/main/java/com/ticketing/server/user/service/UserServiceImpl.java

@@ -2,7 +2,7 @@ package com.ticketing.server.user.service;
 
 import com.ticketing.server.global.exception.ErrorCode;
 import com.ticketing.server.user.domain.ChangeGradeDTO;
-import com.ticketing.server.user.domain.SequenceGenerator;
+import com.ticketing.server.global.dto.SequenceGenerator;
 import com.ticketing.server.user.domain.User;
 import com.ticketing.server.user.domain.UserGrade;
 import com.ticketing.server.user.domain.repository.UserRepository;

server/src/main/resources/application-local.yml

@@ -12,3 +12,13 @@ spring:
         format_sql: true
     hibernate:
       ddl-auto: create
+
+api:
+  kakao:
+    pay:
+      url: http://localhost:8080
+      approval: /api/payments/complete
+      cancel: /api/payments/cancel
+      fail: /api/payments/cancel
+      prefix: KakaoAK
+      key: b2472272b813500c51a25e1422261676

server/src/main/resources/application.yml

@@ -23,6 +23,10 @@ spring:
       matching-strategy: ant_path_matcher
     throw-exception-if-no-handler-found: true
 
+  config:
+    import: "optional:configserver:"
+
+
 jasypt:
   encryptor:
     bean: jasyptStringEncryptor
@@ -39,3 +43,7 @@ springfox:
   documentation:
     swagger:
       use-model-v3: false
+
+logging:
+  level:
+    com.ticketing.server.payment.api.KakaoPayClient: DEBUG

server/src/test/java/com/ticketing/server/movie/domain/TicketTest.java

@@ -4,6 +4,7 @@ import static com.ticketing.server.movie.domain.MovieTimeTest.MOVIE_TIMES;
 import static com.ticketing.server.movie.domain.SeatTest.SEATS_BY_THEATER;
 import static org.assertj.core.api.Assertions.assertThat;
 import static org.assertj.core.api.Assertions.assertThatThrownBy;
+import static org.junit.jupiter.api.Assertions.assertAll;
 
 import com.ticketing.server.global.exception.ErrorCode;
 import com.ticketing.server.global.exception.TicketingException;
@@ -65,4 +66,109 @@ public class TicketTest {
 			.isEqualTo(ErrorCode.DUPLICATE_PAYMENT);
 	}
 
+	@Test
+	@DisplayName("좌석 예약 성공")
+	void makeReservationSuccess() {
+		// given
+		Ticket ticket = tickets.get(0);
+
+		// when
+		ticket = ticket.makeReservation();
+
+		// then
+		assertThat(ticket.getStatus()).isEqualTo(TicketStatus.RESERVATION);
+	}
+
+	@Test
+	@DisplayName("좌석 예약 실패 - 이미 예약중인 좌석인 경우")
+	void makeReservationFail_Reservation() {
+		// given
+		Ticket ticket = tickets.get(0);
+		ticket.makeReservation();
+
+		// when
+		// then
+		assertThatThrownBy(ticket::makeReservation)
+			.isInstanceOf(TicketingException.class)
+			.extracting("errorCode")
+			.isEqualTo(ErrorCode.DUPLICATE_PAYMENT);
+	}
+
+	@Test
+	@DisplayName("좌석 예약 실패 - 이미 판매된 좌석인 경우")
+	void makeReservationFail_Sold() {
+		// given
+		Ticket ticket = tickets.get(0);
+		ticket.makeSold(123L);
+
+		// when
+		// then
+		assertThatThrownBy(ticket::makeReservation)
+			.isInstanceOf(TicketingException.class)
+			.extracting("errorCode")
+			.isEqualTo(ErrorCode.DUPLICATE_PAYMENT);
+	}
+
+	@Test
+	@DisplayName("좌석 구매 성공")
+	void makeSoldSuccess() {
+		// given
+		Ticket ticket = tickets.get(0);
+
+		// when
+		ticket.makeSold(123L);
+
+		// then
+		assertAll(
+			() -> assertThat(ticket.getStatus()).isEqualTo(TicketStatus.SOLD),
+			() -> assertThat(ticket.getPaymentId()).isEqualTo(123L)
+		);
+	}
+
+	@Test
+	@DisplayName("좌석 구매 실패 - 이미 판매된 좌석")
+	void makeSoldFail() {
+		// given
+		Ticket ticket = tickets.get(0);
+
+		// when
+		ticket.makeSold(123L);
+
+		// then
+		assertThatThrownBy(() -> ticket.makeSold(123L))
+			.isInstanceOf(TicketingException.class)
+			.extracting("errorCode")
+			.isEqualTo(ErrorCode.DUPLICATE_PAYMENT);
+	}
+
+	@Test
+	@DisplayName("좌석 취소 성공")
+	void cancelSuccess() {
+		// given
+		Ticket ticket = tickets.get(0);
+
+		// when
+		ticket.makeReservation();
+		ticket.cancel();
+
+		// then
+		assertThat(ticket.getStatus()).isEqualTo(TicketStatus.SALE);
+	}
+
+	@Test
+	@DisplayName("좌석 취소 실패")
+	void cancelFail() {
+		// given
+		Ticket ticket = tickets.get(0);
+
+		// when
+		ticket.makeSold(123L);
+
+		// then
+		assertThatThrownBy(() -> ticket.cancel())
+			.isInstanceOf(TicketingException.class)
+			.extracting("errorCode")
+			.isEqualTo(ErrorCode.BAD_REQUEST_PAYMENT_CANCEL);
+	}
+
 }

server/src/test/java/com/ticketing/server/movie/service/TicketServiceImplTest.java

@@ -11,6 +11,7 @@ import com.ticketing.server.global.exception.TicketingException;
 import com.ticketing.server.movie.domain.Ticket;
 import com.ticketing.server.movie.domain.repository.TicketRepository;
 import com.ticketing.server.movie.service.dto.TicketDetailsDTO;
+import com.ticketing.server.movie.service.dto.TicketsReservationDTO;
 import com.ticketing.server.payment.service.dto.TicketDetailDTO;
 import java.util.Collections;
 import java.util.List;
@@ -62,4 +63,39 @@ class TicketServiceImplTest {
 		);
 	}
 
+	@Test
+	@DisplayName("티켓목록 예약으로 변경 시 조회된 갯수랑 다른 경우")
+	void ticketReservationFail() {
+	    // given
+		List<Ticket> tickets = setupTickets();
+		List<Ticket> list = List.of(tickets.get(0), tickets.get(1), tickets.get(2));
+		List<Long> ids = List.of(0L, 1L, 2L, 10000L);
+
+		when(ticketRepository.findTicketFetchJoinByTicketIds(ids)).thenReturn(list);
+
+	    // when
+		// then
+		assertThatThrownBy(() -> ticketService.ticketReservation(ids))
+			.isInstanceOf(TicketingException.class)
+			.extracting("errorCode")
+			.isEqualTo(ErrorCode.INVALID_TICKET_ID);
+	}
+
+	@Test
+	@DisplayName("티켓목록 예약으로 변경 완료")
+	void ticketReservationSuccess() {
+	    // given
+		List<Ticket> tickets = setupTickets();
+		List<Ticket> list = List.of(tickets.get(0), tickets.get(1), tickets.get(2));
+		List<Long> ids = List.of(0L, 1L, 2L);
+
+		when(ticketRepository.findTicketFetchJoinByTicketIds(ids)).thenReturn(list);
+
+	    // when
+		TicketsReservationDTO ticketReservationsDto = ticketService.ticketReservation(ids);
+
+		// then
+		assertThat(ticketReservationsDto.getTicketReservationDtoList()).hasSize(3);
+	}
+
 }

server/src/test/java/com/ticketing/server/payment/domain/PaymentTest.java

@@ -3,6 +3,6 @@ package com.ticketing.server.payment.domain;
 public class PaymentTest {
 
 	public static final Payment PAYMENT_USER_1
-		= new Payment(1L, 111L, "탑건: 매버릭", PaymentType.KAKAO_PAY, PaymentStatus.COMPLETED, "2022-0710-4142", 30_000);
+		= new Payment(1L, 111L, "탑건: 매버릭", PaymentType.KAKAO_PAY, PaymentStatus.SOLD, "2022-0710-4142", 30_000);
 
 }

server/src/test/java/com/ticketing/server/payment/service/PaymentServiceImplTest.java

@@ -1,13 +1,13 @@
 package com.ticketing.server.payment.service;
 
-import static com.ticketing.server.payment.domain.PaymentStatus.COMPLETED;
+import static com.ticketing.server.payment.domain.PaymentStatus.SOLD;
 import static com.ticketing.server.payment.domain.PaymentType.KAKAO_PAY;
 import static org.assertj.core.api.Assertions.assertThat;
 import static org.mockito.Mockito.when;
 
+import com.ticketing.server.global.redis.PaymentCache;
 import com.ticketing.server.payment.domain.Payment;
 import com.ticketing.server.payment.domain.repository.PaymentRepository;
-import com.ticketing.server.payment.service.dto.CreatePaymentDTO;
 import com.ticketing.server.payment.service.dto.SimplePaymentsDTO;
 import java.util.Arrays;
 import java.util.Collections;
@@ -50,8 +50,32 @@ class PaymentServiceImplTest {
 	void findSimplePaymentsSuccess(Long userAlternateId) {
 		// given
 		List<Payment> payments = Arrays.asList(
-			new CreatePaymentDTO(userAlternateId, "범죄도시2", KAKAO_PAY, COMPLETED, "004-323-77542", 15_000).toEntity(),
-			new CreatePaymentDTO(userAlternateId, "토르", KAKAO_PAY, COMPLETED, "004-323-77544", 30_000).toEntity()
+			new Payment(
+				new PaymentCache(
+					"",
+					"범죄도시2",
+					"T2d03c9130bf237a97001",
+					List.of(3L),
+					userAlternateId,
+					1241242343245L
+				),
+				KAKAO_PAY,
+				SOLD,
+				15_000
+			),
+			new Payment(
+				new PaymentCache(
+					"",
+					"토르",
+					"T2d03c9130bf237a97002",
+					List.of(3L),
+					userAlternateId,
+					12412343212445L
+				),
+				KAKAO_PAY,
+				SOLD,
+				30_000
+			)
 		);
 		when(paymentRepository.findByUserAlternateId(userAlternateId)).thenReturn(payments);
 

server/src/test/java/com/ticketing/server/user/domain/SnowflakeTest.java

@@ -3,6 +3,7 @@ package com.ticketing.server.user.domain;
 import static org.assertj.core.api.Assertions.assertThat;
 import static org.junit.jupiter.api.Assertions.assertAll;
 
+import com.ticketing.server.global.dto.Snowflake;
 import java.time.Instant;
 import java.util.Arrays;
 import java.util.HashSet;

server/src/test/java/com/ticketing/server/user/service/UserApisServiceImplTest.java

@@ -1,14 +1,15 @@
 package com.ticketing.server.user.service;
 
-import static com.ticketing.server.payment.domain.PaymentStatus.COMPLETED;
+import static com.ticketing.server.payment.domain.PaymentStatus.SOLD;
 import static com.ticketing.server.payment.domain.PaymentType.KAKAO_PAY;
 import static org.assertj.core.api.Assertions.assertThat;
 import static org.junit.jupiter.api.Assertions.assertAll;
 import static org.mockito.ArgumentMatchers.any;
 import static org.mockito.Mockito.when;
 
+import com.ticketing.server.global.redis.PaymentCache;
 import com.ticketing.server.payment.application.response.SimplePaymentsResponse;
-import com.ticketing.server.payment.service.dto.CreatePaymentDTO;
+import com.ticketing.server.payment.domain.Payment;
 import com.ticketing.server.payment.service.dto.SimplePaymentDTO;
 import com.ticketing.server.user.api.PaymentClient;
 import com.ticketing.server.user.domain.User;
@@ -68,9 +69,35 @@ class UserApisServiceImplTest {
 		// given
 		List<SimplePaymentDTO> payments = Arrays.asList(
 			new SimplePaymentDTO(
-				new CreatePaymentDTO(1L, "범죄도시2", KAKAO_PAY, COMPLETED, "004-323-77542", 15_000).toEntity()),
+				new Payment(
+					new PaymentCache(
+						user.getEmail(),
+						"범죄도시2",
+						"T2d03c9130bf237a9700",
+						List.of(1L, 2L),
+						user.getAlternateId(),
+						124124231513245L
+					),
+					KAKAO_PAY,
+					SOLD,
+					15_000
+				)
+			),
 			new SimplePaymentDTO(
-				new CreatePaymentDTO(1L, "토르", KAKAO_PAY, COMPLETED, "004-323-77544", 30_000).toEntity())
+				new Payment(
+					new PaymentCache(
+						user.getEmail(),
+						"범죄도시2",
+						"T2d03c9130bf237a97001",
+						List.of(3L),
+						user.getAlternateId(),
+						1241242343245L
+					),
+					KAKAO_PAY,
+					SOLD,
+					15_000
+				)
+			)
 		);
 
 		when(userService.findNotDeletedUserByEmail("ticketing@gmail.com")).thenReturn(user);

server/src/test/java/com/ticketing/server/user/service/UserServiceImplTest.java

@@ -8,7 +8,7 @@ import static org.mockito.Mockito.when;
 
 import com.ticketing.server.global.exception.ErrorCode;
 import com.ticketing.server.global.exception.TicketingException;
-import com.ticketing.server.user.domain.SequenceGenerator;
+import com.ticketing.server.global.dto.SequenceGenerator;
 import com.ticketing.server.user.domain.User;
 import com.ticketing.server.user.domain.UserGrade;
 import com.ticketing.server.user.domain.repository.UserRepository;