feat: 패스워드 변경 메소드 구현

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

@@ -4,7 +4,9 @@ import com.ticketing.server.global.dto.repository.AbstractEntity;
 import com.ticketing.server.global.exception.AlreadyDeletedException;
 import com.ticketing.server.global.exception.PasswordMismatchException;
 import com.ticketing.server.global.validator.constraints.Phone;
+import com.ticketing.server.user.service.dto.ChangePassword;
 import com.ticketing.server.user.service.dto.DeleteUser;
+import com.ticketing.server.user.service.dto.PasswordMatches;
 import java.time.LocalDateTime;
 import javax.persistence.Column;
 import javax.persistence.Entity;
@@ -61,13 +63,24 @@ public class User extends AbstractEntity {
 			throw new AlreadyDeletedException("이미 탈퇴된 회원 입니다.");
 		}
 
-		if (!deleteUser.passwordEquals(password)) {
-			throw new PasswordMismatchException();
-		}
+		comparePassword(deleteUser);
 
 		isDeleted = true;
 		deletedAt = LocalDateTime.now();
 		return this;
 	}
 
+	public User modifyPassword(ChangePassword changePassword) {
+		comparePassword(changePassword);
+
+		this.password = changePassword.getEncodePassword();
+		return this;
+	}
+
+	private void comparePassword(PasswordMatches passwordMatches) {
+		if (!passwordMatches.passwordMatches(password)) {
+			throw new PasswordMismatchException();
+		}
+	}
+
 }

server/src/main/java/com/ticketing/server/user/service/dto/ChangePassword.java

@@ -0,0 +1,40 @@
+package com.ticketing.server.user.service.dto;
+
+import javax.validation.constraints.Email;
+import javax.validation.constraints.NotEmpty;
+import org.springframework.security.crypto.password.PasswordEncoder;
+
+public class ChangePassword implements PasswordMatches {
+
+	public ChangePassword(String email, String oldPassword, String newPassword, PasswordEncoder passwordEncoder) {
+		this.email = email;
+		this.oldPassword = oldPassword;
+		this.newPassword = newPassword;
+		this.passwordEncoder = passwordEncoder;
+	}
+
+	@NotEmpty(message = "{validation.not.empty.email}")
+	@Email(message = "{validation.email}")
+	private String email;
+
+	@NotEmpty(message = "{validation.not.empty.oldpassword}")
+	private String oldPassword;
+
+	@NotEmpty(message = "{validation.not.empty.newpassword}")
+	private String newPassword;
+
+	private PasswordEncoder passwordEncoder;
+
+	public String getEmail() {
+		return email;
+	}
+
+	@Override
+	public boolean passwordMatches(String password) {
+		return passwordEncoder.matches(oldPassword, password);
+	}
+
+	public String getEncodePassword() {
+		return passwordEncoder.encode(newPassword);
+	}
+}

server/src/main/java/com/ticketing/server/user/service/dto/DeleteUser.java

@@ -4,7 +4,7 @@ import javax.validation.constraints.Email;
 import javax.validation.constraints.NotEmpty;
 import org.springframework.security.crypto.password.PasswordEncoder;
 
-public class DeleteUser {
+public class DeleteUser implements PasswordMatches {
 
 	public DeleteUser(String email, String inputPassword, PasswordEncoder passwordEncoder) {
 		this.email = email;
@@ -21,7 +21,8 @@ public class DeleteUser {
 
 	private PasswordEncoder passwordEncoder;
 
-	public boolean passwordEquals(String password) {
+	@Override
+	public boolean passwordMatches(String password) {
 		return passwordEncoder.matches(this.inputPassword, password);
 	}
 

server/src/main/java/com/ticketing/server/user/service/dto/PasswordMatches.java

@@ -0,0 +1,7 @@
+package com.ticketing.server.user.service.dto;
+
+@FunctionalInterface
+public interface PasswordMatches {
+
+	boolean passwordMatches(String password);
+}

server/src/test/java/com/ticketing/server/user/service/dto/DeleteUserTest.java

@@ -31,7 +31,7 @@ public class DeleteUserTest {
 
 		// when
 		// then
-		assertThat(user.passwordEquals("123456")).isTrue();
+		assertThat(user.passwordMatches("123456")).isTrue();
 	}
 
 }