diff --git a/backend/src/app.module.ts b/backend/src/app.module.ts
index ab87514..afa9ecd 100644
--- a/backend/src/app.module.ts
+++ b/backend/src/app.module.ts
@@ -1,10 +1,9 @@
 import { Module } from '@nestjs/common';
 import { AppController } from './app.controller';
 import { AppService } from './app.service';
-import { PostsModule } from './posts/posts.module';
+import { PostModule } from './post/post.module';
 import { DatabaseModule } from './database/database.module';
 import { ConfigModule } from '@nestjs/config';
-import { PostModule } from './post/post.module';
 import configuration from './config/configuration';
 
 @Module({
@@ -13,7 +12,6 @@ import configuration from './config/configuration';
       load: [configuration]
     }),
     DatabaseModule,
-    PostsModule,
     PostModule
   ],
   controllers: [AppController],
diff --git a/backend/src/comment/comment.entity.ts b/backend/src/comment/comment.entity.ts
index 7c29d32..530c9a6 100644
--- a/backend/src/comment/comment.entity.ts
+++ b/backend/src/comment/comment.entity.ts
@@ -1,5 +1,5 @@
 import { Entity, Column, PrimaryGeneratedColumn, ManyToOne } from 'typeorm';
-import { Post } from './post.entity';
+import { Post } from '../post/post.entity';
 
 @Entity()
 export class Comment {
diff --git a/backend/src/post/post.controller.spec.ts b/backend/src/post/post.controller.spec.ts
index f66eb7d..a0311f2 100644
--- a/backend/src/post/post.controller.spec.ts
+++ b/backend/src/post/post.controller.spec.ts
@@ -1,5 +1,12 @@
 import { Test, TestingModule } from '@nestjs/testing';
 import { PostController } from './post.controller';
+import { PostService } from './post.service';
+import { getRepositoryToken } from '@nestjs/typeorm';
+import { Post } from './post.entity';
+import { Comment } from '../comment/comment.entity';
+
+const mockPost = new Post();
+const mockComment = new Comment();
 
 describe('PostController', () => {
   let controller: PostController;
@@ -7,6 +14,23 @@ describe('PostController', () => {
   beforeEach(async () => {
     const module: TestingModule = await Test.createTestingModule({
       controllers: [PostController],
+      providers: [
+        PostService,
+        {
+          provide: getRepositoryToken(Post),
+          useValue: {
+            save: jest.fn().mockResolvedValue(mockPost),
+            find: jest.fn().mockResolvedValue([mockPost]),
+          },
+        },
+        {
+          provide: getRepositoryToken(Comment),
+          useValue: {
+            save: jest.fn().mockResolvedValue(mockComment),
+            find: jest.fn().mockResolvedValue([mockComment]),
+          },
+        },
+      ],
     }).compile();
 
     controller = module.get<PostController>(PostController);
diff --git a/backend/src/post/post.entity.spec.ts b/backend/src/post/post.entity.spec.ts
index a91e8c3..a53e694 100644
--- a/backend/src/post/post.entity.spec.ts
+++ b/backend/src/post/post.entity.spec.ts
@@ -1,4 +1,4 @@
-import { Post } from './post';
+import { Post } from './post.entity';
 
 describe('Post', () => {
   it('should be defined', () => {
diff --git a/backend/src/post/post.entity.ts b/backend/src/post/post.entity.ts
index c252c3b..4e91111 100644
--- a/backend/src/post/post.entity.ts
+++ b/backend/src/post/post.entity.ts
@@ -1,5 +1,5 @@
-import { Entity, Column, PrimaryGeneratedColumn, OneToMany } from ‘typeorm’;
-import { Comment } from ‘./comment.entity’;
+import { Entity, Column, PrimaryGeneratedColumn, OneToMany } from 'typeorm';
+import { Comment } from '../comment/comment.entity';
 
 @Entity()
 export class Post {
diff --git a/backend/src/post/post.service.spec.ts b/backend/src/post/post.service.spec.ts
index 7769284..6e35eb2 100644
--- a/backend/src/post/post.service.spec.ts
+++ b/backend/src/post/post.service.spec.ts
@@ -1,12 +1,36 @@
 import { Test, TestingModule } from '@nestjs/testing';
 import { PostService } from './post.service';
+import { PostController } from './post.controller';
+import { getRepositoryToken } from '@nestjs/typeorm';
+import { Post } from './post.entity';
+import { Comment } from '../comment/comment.entity';
+
+const mockPost = new Post();
+const mockComment = new Comment();
 
 describe('PostService', () => {
   let service: PostService;
 
   beforeEach(async () => {
     const module: TestingModule = await Test.createTestingModule({
-      providers: [PostService],
+      controllers: [PostController],
+      providers: [
+        PostService,
+        {
+          provide: getRepositoryToken(Post),
+          useValue: {
+            save: jest.fn().mockResolvedValue(mockPost),
+            find: jest.fn().mockResolvedValue([mockPost]),
+          },
+        },
+        {
+          provide: getRepositoryToken(Comment),
+          useValue: {
+            save: jest.fn().mockResolvedValue(mockComment),
+            find: jest.fn().mockResolvedValue([mockComment]),
+          },
+        },
+      ],
     }).compile();
 
     service = module.get<PostService>(PostService);