todo/src/main/java/ru/kamask/pet/todo/TodoApp.java

@@ -10,6 +10,10 @@ public class TodoApp {
     public static void main(String[] args) throws IOException {
         var service = new TaskService(new InMemoryTaskRepository());
         var cli = new CliEngine(service);
+
+        // service.create("test has-id");
+        // System.out.println(service.has(2));
+
         cli.start();
     }
 

todo/src/main/java/ru/kamask/pet/todo/repo/InMemoryTaskRepository.java

@@ -30,4 +30,8 @@ public class InMemoryTaskRepository implements TaskRepository {
     public void delete(int id) {
         storage.remove(id);
     }
+
+    public boolean has(int id) {
+        return storage.containsKey(id);
+    }
 }

todo/src/main/java/ru/kamask/pet/todo/repo/TaskRepository.java

@@ -13,4 +13,6 @@ public interface TaskRepository {
     List<Task> findAll();
 
     void delete(int id);
+
+    boolean has(int id);
 }

todo/src/main/java/ru/kamask/pet/todo/service/TaskService.java

@@ -38,4 +38,8 @@ public class TaskService {
     public void remove(int id) {
         repo.delete(id);
     }
+
+    public boolean has(int id) {
+        return repo.has(id);
+    }
 }