чето не то

ip-backend-labs/build.gradle

@@ -27,6 +27,9 @@ dependencies {
 	implementation("com.fasterxml.jackson.datatype:jackson-datatype-jsr310")
 	testImplementation 'org.springframework.boot:spring-boot-starter-test'
 	testRuntimeOnly 'org.junit.platform:junit-platform-launcher'
+
+	implementation 'org.springframework.boot:spring-boot-starter-data-jpa'
+    runtimeOnly 'com.h2database:h2'
 }
 
 tasks.named('test') {

ip-backend-labs/src/main/java/io/github/f1rstteam/ip_backend_labs/DTO/Mapping/PostMapper.java

@@ -4,13 +4,14 @@ import java.time.LocalDateTime;
 
 import org.springframework.stereotype.Component;
 
-import io.github.f1rstteam.ip_backend_labs.DTO.PostDTO;
+import io.github.f1rstteam.ip_backend_labs.DTO.PostRqDto;
+import io.github.f1rstteam.ip_backend_labs.DTO.PostRsDto;
 import io.github.f1rstteam.ip_backend_labs.model.Post;
 
 @Component
 public class PostMapper {
-    public PostDTO toDTO(Post post) {
-        PostDTO dto = new PostDTO();
+    public static PostRsDto toDto(Post post) {
+        PostRsDto dto = new PostRsDto();
         dto.setId(post.getId());
         dto.setText(post.getText());
         dto.setImage(post.getImage());
@@ -22,16 +23,15 @@ public class PostMapper {
         return dto;
     }
 
-    public Post toEntity(PostDTO postDTO) {
+    public static Post toEntity(PostRqDto dto) {
         Post post = new Post();
-        post.setId(postDTO.getId() != null ? postDTO.getId() : null);
-        post.setText(postDTO.getText() != null ? postDTO.getText() : "");
-        post.setImage(postDTO.getImage() != null ? postDTO.getImage() : "");
-        post.setGroup(postDTO.getGroup() != null ? postDTO.getGroup() : "Моя группа");
-        post.setLikes(postDTO.getLikes() >= 0 ? postDTO.getLikes() : 0);
-        post.setComments(postDTO.getComments() >= 0 ? postDTO.getComments() : 0);
-        post.setShares(postDTO.getShares() >= 0 ? postDTO.getShares() : 0);
-        post.setCreatedAt(postDTO.getCreatedAt() != null ? postDTO.getCreatedAt() : LocalDateTime.now());
+        post.setText(dto.getText() != null ? dto.getText() : "");
+        post.setImage(dto.getImage() != null ? dto.getImage() : "");
+        post.setGroup(dto.getGroup() != null ? dto.getGroup() : "Моя группа");
+        post.setLikes(0);        
+        post.setComments(0); 
+        post.setShares(0);
+        post.setCreatedAt(LocalDateTime.now());
         return post;
     }
 }

ip-backend-labs/src/main/java/io/github/f1rstteam/ip_backend_labs/DTO/PostRqDto.java

@@ -0,0 +1,24 @@
+package io.github.f1rstteam.ip_backend_labs.DTO;
+
+public class PostRqDto {
+    private String text;
+    private String image;
+    private String group;
+    
+    public PostRqDto() {}
+
+    public PostRqDto(String text, String image, String group) {
+        this.text = text;
+        this.image = image;
+        this.group = group;
+    }
+
+    public String getText() { return text; }
+    public void setText(String text) { this.text = text; }
+
+    public String getImage() { return image; }
+    public void setImage(String image) { this.image = image; }
+
+    public String getGroup() { return group; }
+    public void setGroup(String group) { this.group = group; }
+}

ip-backend-labs/src/main/java/io/github/f1rstteam/ip_backend_labs/DTO/PostRsDto.java

@@ -2,8 +2,8 @@ package io.github.f1rstteam.ip_backend_labs.DTO;
 
 import java.time.LocalDateTime;
 
-public class PostDTO {
-    private Long id;
+public class PostRsDto {
+     private Long id;
     private String text;
     private String image;
     private String group;
@@ -11,10 +11,10 @@ public class PostDTO {
     private int comments;
     private int shares;
     private LocalDateTime createdAt;
-    
-    public PostDTO() {}
 
-    public PostDTO(Long id, String text, String image, String group, int likes, int comments, int shares, LocalDateTime createdAt) {
+    public PostRsDto() {}
+
+    public PostRsDto(Long id, String text, String image, String group, int likes, int comments, int shares, LocalDateTime createdAt) {
         this.id = id;
         this.text = text;
         this.image = image;
@@ -26,20 +26,26 @@ public class PostDTO {
     }
 
     public Long getId() { return id; }
-    public String getText() { return text; }
-    public String getImage() { return image; }
-    public String getGroup() { return group; }
-    public int getLikes() { return likes; }
-    public int getComments() { return comments; }
-    public int getShares() { return shares; }
-    public LocalDateTime getCreatedAt() { return createdAt; }
-
     public void setId(Long id) { this.id = id; }
+
+    public String getText() { return text; }
     public void setText(String text) { this.text = text; }
+
+    public String getImage() { return image; }
     public void setImage(String image) { this.image = image; }
+
+    public String getGroup() { return group; }
     public void setGroup(String group) { this.group = group; }
+
+    public int getLikes() { return likes; }
     public void setLikes(int likes) { this.likes = likes; }
+
+    public int getComments() { return comments; }
     public void setComments(int comments) { this.comments = comments; }
+
+    public int getShares() { return shares; }
     public void setShares(int shares) { this.shares = shares; }
+
+    public LocalDateTime getCreatedAt() { return createdAt; }
     public void setCreatedAt(LocalDateTime createdAt) { this.createdAt = createdAt; }
 }

ip-backend-labs/src/main/java/io/github/f1rstteam/ip_backend_labs/Repositories/CommonRepository.java

@@ -0,0 +1,11 @@
+package io.github.f1rstteam.ip_backend_labs.Repositories;
+
+import java.util.List;
+import java.util.Optional;
+
+public interface CommonRepository<T, ID> {
+    T save(ID id, T entity);
+    Optional<T> findById(ID id);
+    List<T> findAll();
+    void deleteById(ID id);
+}

ip-backend-labs/src/main/java/io/github/f1rstteam/ip_backend_labs/Repositories/MapRepository.java

@@ -0,0 +1,28 @@
+package io.github.f1rstteam.ip_backend_labs.Repositories;
+
+import java.util.*;
+
+public abstract class MapRepository<T, ID> implements CommonRepository<T, ID> {
+    protected final Map<ID, T> storage = new HashMap<>();
+
+    @Override
+    public T save(ID id, T entity) {
+        storage.put(id, entity);
+        return entity;
+    }
+
+    @Override
+    public Optional<T> findById(ID id) {
+        return Optional.ofNullable(storage.get(id));
+    }
+
+    @Override
+    public List<T> findAll() {
+        return new ArrayList<>(storage.values());
+    }
+
+    @Override
+    public void deleteById(ID id) {
+        storage.remove(id);
+    }
+}

ip-backend-labs/src/main/java/io/github/f1rstteam/ip_backend_labs/Repositories/PostRepository.java

@@ -0,0 +1,9 @@
+package io.github.f1rstteam.ip_backend_labs.Repositories;
+
+import org.springframework.stereotype.Repository;
+
+import io.github.f1rstteam.ip_backend_labs.model.Post;
+@Repository
+public class PostRepository extends MapRepository<Post, Long> implements CommonRepository<Post, Long> {
+    
+}

ip-backend-labs/src/main/java/io/github/f1rstteam/ip_backend_labs/Service/JsonPostService.java

@@ -1,146 +0,0 @@
-package io.github.f1rstteam.ip_backend_labs.Service;
-
-import java.io.File;
-import java.io.IOException;
-import java.time.LocalDateTime;
-import java.util.ArrayList;
-import java.util.List;
-import java.util.concurrent.atomic.AtomicLong;
-
-import org.springframework.stereotype.Service;
-
-import com.fasterxml.jackson.databind.ObjectMapper;
-import com.fasterxml.jackson.databind.type.CollectionType;
-import com.fasterxml.jackson.datatype.jsr310.JavaTimeModule;
-
-import io.github.f1rstteam.ip_backend_labs.model.Post;
-import jakarta.annotation.PostConstruct;
-import jakarta.annotation.PreDestroy;
-
-@Service
-public class JsonPostService {
-    private static final String STORAGE_FILE = "posts.json";
-    private final ObjectMapper objectMapper = new ObjectMapper();
-    private List<Post> posts = new ArrayList<>();
-    private final AtomicLong counter = new AtomicLong(1);
-
-    public JsonPostService() {
-        objectMapper.registerModule(new JavaTimeModule());
-    }
-
-    
-    @PostConstruct
-    public void loadPosts() {
-        try {
-            File file = new File(STORAGE_FILE);
-            if (file.exists()) {
-                CollectionType listType = objectMapper.getTypeFactory()
-                        .constructCollectionType(List.class, Post.class);
-                posts = objectMapper.readValue(file, listType);
-                System.out.println("Загружено " + posts.size() + " постов из файла");
-                
-                
-                if (!posts.isEmpty()) {
-                    long maxId = posts.stream()
-                            .mapToLong(Post::getId)
-                            .max()
-                            .orElse(0);
-                    counter.set(maxId + 1);
-                }
-            } else {
-                
-                posts = getInitialPosts();
-                savePostsImmediately();
-                System.out.println("Созданы начальные посты: " + posts.size());
-            }
-        } catch (IOException e) {
-            System.out.println("Ошибка загрузки файла: " + e.getMessage());
-            posts = getInitialPosts();
-        }
-    }
-
-    
-    @PreDestroy
-    public void savePosts() {
-        try {
-            objectMapper.writeValue(new File(STORAGE_FILE), posts);
-            System.out.println("Сохранено " + posts.size() + " постов в файл");
-        } catch (IOException e) {
-            System.out.println("Ошибка сохранения файла: " + e.getMessage());
-        }
-    }
-
-    
-    public void savePostsImmediately() {
-        savePosts();
-    }
-
-    private List<Post> getInitialPosts() {
-        List<Post> initialPosts = new ArrayList<>();
-        LocalDateTime now = LocalDateTime.now();
-        
-        initialPosts.add(new Post(
-            1L, 
-            "Первый мем", 
-            "/images/meme1.jpg", 
-            "Какая-то группа 1", 
-            8, 2, 1, 
-            now.minusDays(2)
-        ));
-        
-        initialPosts.add(new Post(
-            2L, 
-            "Второй мем", 
-            "/images/meme2.jpg", 
-            "Какая-то группа 2", 
-            785, 102, 14, 
-            now.minusDays(2)
-        ));
-        
-        return initialPosts;
-    }
-
-    public List<Post> getAllPosts() {
-        return new ArrayList<>(posts);
-    }
-
-    public Post getPostById(Long id) {
-        return posts.stream()
-                .filter(post -> post.getId().equals(id))
-                .findFirst()
-                .orElseThrow(() -> new RuntimeException("Post not found"));
-    }
-
-    public Post createPost(Post post) {
-        post.setId(counter.getAndIncrement());
-        post.setCreatedAt(LocalDateTime.now());
-        posts.add(post);
-        savePostsImmediately(); 
-        return post;
-    }
-
-    public Post updatePost(Long id, Post updatedPost) {
-        Post post = getPostById(id);
-        post.setText(updatedPost.getText());
-        post.setImage(updatedPost.getImage());
-        post.setGroup(updatedPost.getGroup());
-        post.setLikes(updatedPost.getLikes());
-        post.setComments(updatedPost.getComments());
-        post.setShares(updatedPost.getShares());
-        savePostsImmediately(); 
-        return post;
-    }
-
-    public void deletePost(Long id) {
-        Post post = getPostById(id);
-        posts.remove(post);
-        savePostsImmediately(); 
-    }
-
-    public Post likePost(Long id) {
-        Post post = getPostById(id);
-        post.setLikes(post.getLikes() + 1);
-        savePostsImmediately(); 
-        return post;
-    }
-}

ip-backend-labs/src/main/java/io/github/f1rstteam/ip_backend_labs/Service/PostService.java

@@ -0,0 +1,68 @@
+package io.github.f1rstteam.ip_backend_labs.Service;
+
+import java.util.List;
+import java.util.concurrent.atomic.AtomicLong;
+import java.util.stream.Collectors;
+
+import org.springframework.stereotype.Service;
+
+import io.github.f1rstteam.ip_backend_labs.DTO.PostRqDto;
+import io.github.f1rstteam.ip_backend_labs.DTO.PostRsDto;
+import io.github.f1rstteam.ip_backend_labs.DTO.Mapping.PostMapper;
+import io.github.f1rstteam.ip_backend_labs.Repositories.PostRepository;
+import io.github.f1rstteam.ip_backend_labs.model.Post;
+
+@Service
+public class PostService {
+    private final PostRepository repository;
+    private final AtomicLong idGenerator = new AtomicLong(1);
+
+    public PostService(PostRepository repository) {
+        this.repository = repository;
+    }
+
+    // CREATE
+    public PostRsDto create(PostRqDto rqDto) {
+        Post post = PostMapper.toEntity(rqDto);
+        Long id = idGenerator.getAndIncrement();
+        post.setId(id);
+        repository.save(id, post);
+        return PostMapper.toDto(post);
+    }
+
+    // READ by ID
+    public PostRsDto getById(Long id) {
+        return repository.findById(id)
+                .map(PostMapper::toDto)
+                .orElseThrow(() -> new RuntimeException("Post not found with id " + id));
+    }
+
+    // READ all
+    public List<PostRsDto> getAll() {
+        return repository.findAll()
+                .stream()
+                .map(PostMapper::toDto)
+                .collect(Collectors.toList());
+    }
+
+    // UPDATE
+    public PostRsDto update(Long id, PostRqDto rqDto) {
+        Post existing = repository.findById(id)
+                .orElseThrow(() -> new RuntimeException("Post not found with id " + id));
+
+        existing.setText(rqDto.getText());
+        existing.setImage(rqDto.getImage());
+        existing.setGroup(rqDto.getGroup());
+
+        repository.save(id, existing);
+        return PostMapper.toDto(existing);
+    }
+
+    // DELETE
+    public void delete(Long id) {
+        if (repository.findById(id).isEmpty()) {
+            throw new RuntimeException("Post not found with id " + id);
+        }
+        repository.deleteById(id);
+    }
+}

ip-backend-labs/src/main/java/io/github/f1rstteam/ip_backend_labs/controllers/PostController.java

@@ -0,0 +1,66 @@
+package io.github.f1rstteam.ip_backend_labs.controllers;
+
+import java.util.List;
+
+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.PutMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import io.github.f1rstteam.ip_backend_labs.DTO.PostRqDto;
+import io.github.f1rstteam.ip_backend_labs.DTO.PostRsDto;
+import io.github.f1rstteam.ip_backend_labs.Service.PostService;
+
+@RestController
+@RequestMapping("/api/posts")
+public class PostController {
+    private final PostService service;
+
+    public PostController(PostService service) {
+        this.service = service;
+    }
+
+    // CREATE
+    @PostMapping
+    public PostRsDto create(@RequestBody PostRqDto rqDto) {
+        validate(rqDto);
+        return service.create(rqDto);
+    }
+    
+
+    // READ by ID
+    @GetMapping("/{id}")
+    public PostRsDto getById(@PathVariable Long id) {
+        return service.getById(id);
+    }
+
+    // READ all
+    @GetMapping
+    public List<PostRsDto> getAll() {
+        return service.getAll();
+    }
+
+    // UPDATE
+    @PutMapping("/{id}")
+    public PostRsDto update(@PathVariable Long id, @RequestBody PostRqDto rqDto) {
+        validate(rqDto);
+        return service.update(id, rqDto);
+    }
+
+    // DELETE
+    @DeleteMapping("/{id}")
+    public void delete(@PathVariable Long id) {
+        service.delete(id);
+    }
+
+    // Валидация
+    private void validate(PostRqDto dto) {
+        if (dto.getText() == null || dto.getText().isBlank()) {
+            throw new IllegalArgumentException("Post text cannot be empty");
+        }
+    }
+}

ip-backend-labs/src/main/java/io/github/f1rstteam/ip_backend_labs/controllers/PostControllerDTO.java

@@ -1,133 +0,0 @@
-package io.github.f1rstteam.ip_backend_labs.controllers;
-
-import java.util.ArrayList;
-import java.util.List;
-import java.util.stream.Collectors;
-
-import org.springframework.web.bind.annotation.DeleteMapping;
-import org.springframework.web.bind.annotation.GetMapping;
-import org.springframework.web.bind.annotation.PatchMapping;
-import org.springframework.web.bind.annotation.PathVariable;
-import org.springframework.web.bind.annotation.PostMapping;
-import org.springframework.web.bind.annotation.PutMapping;
-import org.springframework.web.bind.annotation.RequestBody;
-import org.springframework.web.bind.annotation.RequestMapping;
-import org.springframework.web.bind.annotation.RestController;
-
-import io.github.f1rstteam.ip_backend_labs.DTO.PostDTO;
-import io.github.f1rstteam.ip_backend_labs.DTO.Mapping.PostMapper;
-import io.github.f1rstteam.ip_backend_labs.Service.JsonPostService;
-import io.github.f1rstteam.ip_backend_labs.model.Post;
-
-@RestController
-@RequestMapping("/api/posts")
-public class PostControllerDTO {
-    private final JsonPostService postService;
-    private final PostMapper postMapper;
-
-    private final List<PostDTO> postsDTO = new ArrayList<>();
-
-    public PostControllerDTO(JsonPostService postService, PostMapper postMapper) {
-        this.postService = postService;
-        this.postMapper = postMapper;
-        initializePredefinedData();
-    }
-
-    private void initializePredefinedData() {
-        postsDTO.addAll(postService.getAllPosts().stream()
-                .map(postMapper::toDTO)
-                .collect(Collectors.toList()));
-    }
-
-    @GetMapping
-    public List<PostDTO> getAllPosts() {
-        return postService.getAllPosts().stream()
-                .map(postMapper::toDTO)
-                .collect(Collectors.toList());
-    }
-
-    @GetMapping("/{postId}")
-    public PostDTO getPostById(@PathVariable("postId") Long id) {
-        return postMapper.toDTO(postService.getPostById(id));
-    }
-
-    @PostMapping
-    public PostDTO createPost(@RequestBody PostDTO postDTO) {
-        Post post = postMapper.toEntity(postDTO);
-        Post savedPost = postService.createPost(post);
-        return postMapper.toDTO(savedPost);
-    }
-
-    @PutMapping("/{postId}")
-    public PostDTO updatePost(@PathVariable("postId") Long id, @RequestBody PostDTO postDTO) {
-        Post existingPost = postService.getPostById(id);
-    
-    
-        existingPost.setText(postDTO.getText());
-        existingPost.setImage(postDTO.getImage());
-        existingPost.setGroup(postDTO.getGroup());
-        existingPost.setLikes(postDTO.getLikes());
-        existingPost.setComments(postDTO.getComments());
-        existingPost.setShares(postDTO.getShares());
-    
-    
-        Post updatedPost = postService.updatePost(id, existingPost);
-        return postMapper.toDTO(updatedPost);
-    }
-
-    @DeleteMapping("/{postId}")
-    public void deletePost(@PathVariable("postId") Long id) {
-        postService.deletePost(id);
-    }
-
-
-
-    @PatchMapping("/{postId}/like")
-    public PostDTO likePost(@PathVariable("postId") Long id) {
-        Post existingPost = postService.getPostById(id);
-        existingPost.setLikes(existingPost.getLikes() + 1);
-    
-        Post updatedPost = postService.updatePost(id, existingPost);
-        return postMapper.toDTO(updatedPost);
-    }
-
-    @PatchMapping("/{postId}/dislike")
-    public PostDTO dislikePost(@PathVariable("postId") Long id) {
-        Post existingPost = postService.getPostById(id);
-        existingPost.setLikes(Math.max(0, existingPost.getLikes() - 1));
-    
-        Post updatedPost = postService.updatePost(id, existingPost);
-        return postMapper.toDTO(updatedPost);
-    }
-
-
-
-    @PatchMapping("/{postId}/comment")
-    public PostDTO commentPost(@PathVariable("postId") Long id) {
-        Post existingPost = postService.getPostById(id);
-        existingPost.setComments(existingPost.getComments() + 1);
-    
-        Post updatedPost = postService.updatePost(id, existingPost);
-        return postMapper.toDTO(updatedPost);
-    }
-
-    
-
-    @PatchMapping("/{postId}/share")
-    public PostDTO sharePost(@PathVariable("postId") Long id) {
-        Post existingPost = postService.getPostById(id);
-        existingPost.setShares(existingPost.getShares() + 1);
-    
-        Post updatedPost = postService.updatePost(id, existingPost);
-        return postMapper.toDTO(updatedPost);
-    }
-
-    @PatchMapping("/{postId}/unshare")
-    public PostDTO unsharePost(@PathVariable("postId") Long id) {
-        Post existingPost = postService.getPostById(id);
-        existingPost.setShares(Math.max(0, existingPost.getShares() - 1));
-    
-        Post updatedPost = postService.updatePost(id, existingPost);
-        return postMapper.toDTO(updatedPost);
-    }
-}

ip-backend-labs/src/main/java/io/github/f1rstteam/ip_backend_labs/model/BaseEntity.java

@@ -0,0 +1,30 @@
+package io.github.f1rstteam.ip_backend_labs.model;
+
+import java.time.LocalDateTime;
+
+public abstract class BaseEntity {
+    protected Long id;
+    protected LocalDateTime createdAt;
+
+    public BaseEntity() {
+    }
+
+    public BaseEntity(Long id, LocalDateTime createdAt) {
+        this.id = id;
+        this.createdAt = createdAt;
+    }
+
+    public Long getId() {
+        return id;
+    }
+    public LocalDateTime getCreatedAt() {
+        return createdAt;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+    public void setCreatedAt(LocalDateTime createdAt){
+        this.createdAt = createdAt;
+    }
+}

ip-backend-labs/src/main/java/io/github/f1rstteam/ip_backend_labs/model/Post.java

@@ -2,34 +2,28 @@ package io.github.f1rstteam.ip_backend_labs.model;
 
 import java.time.LocalDateTime;
 
-public class Post {
-    private Long id;
+
+public class Post extends BaseEntity {
     private String text;
     private String image;
     private String group;
     private int likes;
     private int comments;
     private int shares;
-    private LocalDateTime createdAt;
 
     
     public Post() {}
 
     public Post(Long id, String text, String image, String group, int likes, int comments, int shares, LocalDateTime createdAt) {
-        this.id = id;
+        super(id, createdAt);
         this.text = text;
         this.image = image;
         this.group = group;
         this.likes = likes;
         this.comments = comments;
         this.shares = shares;
-        this.createdAt = createdAt;
     }
 
-    
-    public Long getId() { return id; }
-    public void setId(Long id) { this.id = id; }
-
     public String getText() { return text; }
     public void setText(String text) { this.text = text; }
 
@@ -47,7 +41,4 @@ public class Post {
 
     public int getShares() { return shares; }
     public void setShares(int shares) { this.shares = shares; }
-
-    public LocalDateTime getCreatedAt() { return createdAt; }
-    public void setCreatedAt(LocalDateTime createdAt) { this.createdAt = createdAt; }
 }

ip-backend-labs/src/main/resources/application.properties

@@ -3,3 +3,13 @@ spring.application.name=Internet Programming Backend Labs
 
 # Available levels: TRACE, DEBUG, INFO, WARN, ERROR, FATAL, OFF
 logging.level.ru.ulstu.is.server=DEBUG
+
+spring.datasource.url=jdbc:h2:file:./data
+spring.datasource.username=sa
+spring.datasource.password=sa
+spring.datasource.driver-class-name=org.h2.Driver
+spring.jpa.properties.hibernate.dialect=org.hibernate.dialect.H2Dialect
+spring.jpa.hibernate.ddl-auto=create
+# spring.jpa.show-sql=true
+# spring.jpa.properties.hibernate.format_sql=true
+spring.h2.console.enabled=true

ip-backend-labs/src/test/java/io/github/f1rstteam/ip_backend_labs/PostServiceTest.java

@@ -0,0 +1,84 @@
+package io.github.f1rstteam.ip_backend_labs;
+
+import org.junit.jupiter.api.BeforeEach;
+
+import io.github.f1rstteam.ip_backend_labs.DTO.PostRqDto;
+import io.github.f1rstteam.ip_backend_labs.DTO.PostRsDto;
+import io.github.f1rstteam.ip_backend_labs.Repositories.PostRepository;
+import io.github.f1rstteam.ip_backend_labs.Service.PostService;
+import io.github.f1rstteam.ip_backend_labs.model.Post;
+
+import org.junit.jupiter.api.Test;
+import org.mockito.ArgumentCaptor;
+
+import java.time.LocalDateTime;
+import java.util.Optional;
+
+import static org.junit.jupiter.api.Assertions.*;
+import static org.mockito.ArgumentMatchers.anyLong;
+import static org.mockito.Mockito.*;
+class PostServiceTest {
+
+    private PostRepository postRepository;
+    private PostService postService;
+
+    @BeforeEach
+    void setUp() {
+        postRepository = mock(PostRepository.class);
+        postService = new PostService(postRepository);
+    }
+
+    @Test
+    void testCreate() {
+        PostRqDto rq = new PostRqDto("Hello", "image.png", "group1");
+
+        PostRsDto result = postService.create(rq);
+
+        assertNotNull(result);
+        assertEquals("Hello", result.getText());
+
+        ArgumentCaptor<Post> postCaptor = ArgumentCaptor.forClass(Post.class);
+        verify(postRepository).save(anyLong(), postCaptor.capture());
+        assertEquals("Hello", postCaptor.getValue().getText());
+    }
+
+    @Test
+    void testGetById_found() {
+        Post post = new Post(1L, "Test", "img.png", "group", 0, 0, 0, LocalDateTime.now());
+        when(postRepository.findById(1L)).thenReturn(Optional.of(post));
+
+        PostRsDto result = postService.getById(1L);
+
+        assertNotNull(result);
+        assertEquals("Test", result.getText());
+    }
+
+    @Test
+    void testGetById_notFound() {
+        when(postRepository.findById(99L)).thenReturn(Optional.empty());
+
+        assertThrows(RuntimeException.class, () -> postService.getById(99L));
+    }
+
+    @Test
+    void testUpdate() {
+        Post existing = new Post(1L, "Old", "old.png", "group", 0, 0, 0, LocalDateTime.now());
+        when(postRepository.findById(1L)).thenReturn(Optional.of(existing));
+
+        PostRqDto rq = new PostRqDto("New text", "new.png", "group");
+
+        PostRsDto result = postService.update(1L, rq);
+
+        assertEquals("New text", result.getText());
+        assertEquals("new.png", result.getImage());
+    }
+
+    @Test
+    void testDelete() {
+        Post post = new Post(1L, "Test", "img.png", "group", 0, 0, 0, LocalDateTime.now());
+        when(postRepository.findById(1L)).thenReturn(Optional.of(post));
+        postService.delete(1L);
+
+        verify(postRepository).deleteById(1L);
+    }
+}