[#54] feat: Follow 인스턴스 빌더 기능 구현

src/main/java/com/study/realworld/domain/follow/domain/Follow.java

@@ -1,9 +1,44 @@
 package com.study.realworld.domain.follow.domain;
 
-import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
-
-import javax.persistence.Entity;
+import com.study.realworld.domain.user.domain.User;
 
 public class Follow {
 
+    private User following;
+    private User follower;
+
+    protected Follow() {
+    }
+
+    private Follow(final FollowBuilder followBuilder) {
+        following = followBuilder.following;
+        follower = followBuilder.follower;
+    }
+
+    public static FollowBuilder Builder() {
+        return new FollowBuilder();
+    }
+
+    public static final class FollowBuilder {
+        private User following;
+        private User follower;
+
+        private FollowBuilder() {
+        }
+
+        public FollowBuilder following(final User following) {
+            this.following = following;
+            return this;
+        }
+
+        public FollowBuilder follower(final User follower) {
+            this.follower = follower;
+            return this;
+        }
+
+        public Follow build() {
+            return new Follow(this);
+        }
+    }
+
 }

src/test/java/com/study/realworld/domain/follow/domain/FollowTest.java

@@ -32,7 +32,7 @@ void builder_test() {
         final User user1 = userBuilder(new Email(EMAIL), new Name(USERNAME), new Password(PASSWORD), new Bio(BIO), new Image(IMAGE));
         final User user2 = userBuilder(new Email("Email2@email.com"), new Name("differentUserName"), new Password("Password2"), new Bio("Bio2"), new Image("Image2"));
 
-        final Follow follow = new Follow.Builder()
+        final Follow follow = Follow.Builder()
                 .following(user1)
                 .follower(user2)
                 .build();
@@ -43,5 +43,4 @@ void builder_test() {
         );
     }
 
-
 }