Лабораторная 3

build.gradle

@@ -14,6 +14,10 @@ repositories {
 
 dependencies {
 	implementation 'org.springframework.boot:spring-boot-starter-web'
+
+	implementation 'org.springframework.boot:spring-boot-starter-data-jpa'
+	implementation 'com.h2database:h2:2.1.210'
+
 	testImplementation 'org.springframework.boot:spring-boot-starter-test'
 }
 

src/main/java/com/example/springip/lab3/models/Company.java

@@ -0,0 +1,83 @@
+package com.example.springip.lab3.models;
+
+import jakarta.persistence.*;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Objects;
+
+@Entity
+public class Company {
+    @Id
+    @GeneratedValue(strategy = GenerationType.AUTO)
+    private Long Id;
+    @Column(unique = true)
+    private String name;
+    @OneToMany(mappedBy = "company", cascade = CascadeType.ALL, fetch = FetchType.EAGER)
+    private List<Employee> employees = new ArrayList<>();
+
+    public Company(String name, List<Employee> employees) {
+        this.name = name;
+        this.employees = employees;
+    }
+
+    public Company(String name) {
+        this.name = name;
+    }
+
+    public Company() {
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public void addNewEmployee(Employee employee) {
+        employees.add(employee);
+        employee.setCompany(this);
+    }
+
+    public void deleteEmployee(Employee employee) {
+        employees.remove(employee);
+        employee.deleteCompany();
+
+    }
+
+    public Long getId() {
+        return Id;
+    }
+
+    public List<Employee> getEmployees() {
+        return employees;
+    }
+
+    public void setEmployees(List<Employee> employees) {
+        this.employees = employees;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) return true;
+        if (o == null || getClass() != o.getClass()) return false;
+        Company company = (Company) o;
+        return Objects.equals(Id, company.Id);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(Id);
+    }
+
+    @Override
+    public String toString() {
+        return "Company{" +
+                "Id=" + Id +
+                ", name='" + name + '\'' +
+                ", employees=" + employees +
+                '}';
+    }
+}

src/main/java/com/example/springip/lab3/models/Employee.java

@@ -0,0 +1,109 @@
+package com.example.springip.lab3.models;
+
+import jakarta.persistence.*;
+
+import java.util.*;
+
+@Entity
+public class Employee {
+    @Id
+    @GeneratedValue(strategy = GenerationType.AUTO)
+    private Long id;
+    private String phoneNumber;
+    private String name;
+    private String surname;
+
+    @ManyToOne(fetch = FetchType.EAGER)
+    private Company company;
+
+    @ManyToMany(cascade = CascadeType.ALL, fetch = FetchType.EAGER)
+    private Set<Position> positions = new HashSet<>();
+
+
+    public Employee(String phoneNumber, String name, String surname) {
+        this.phoneNumber = phoneNumber;
+        this.name = name;
+        this.surname = surname;
+    }
+
+    public Employee() {
+    }
+
+    public Long getId() {
+        return id;
+    }
+
+    public String getPhoneNumber() {
+        return phoneNumber;
+    }
+
+    public void setPhoneNumber(String phoneNumber) {
+        this.phoneNumber = phoneNumber;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public String getSurname() {
+        return surname;
+    }
+
+    public void setSurname(String surname) {
+        this.surname = surname;
+    }
+
+    public List<Position> getPositions() {
+        return positions.stream().toList();
+    }
+
+    public Company getCompany() {
+        return company;
+    }
+
+    public void setCompany(Company company) {
+        this.company = company;
+        if (!company.getEmployees().contains(this)) {
+            company.addNewEmployee(this);
+        }
+    }
+
+    public void deleteCompany() {
+        if (company.getEmployees().contains(this)) {
+            company.deleteEmployee(this);
+        }
+        this.company = null;
+    }
+
+    public void addNewPosition(Position p) {
+        positions.add(p);
+        if (!p.getEmployees().contains(this)) {
+            p.addNewEmployee(this);
+        }
+
+    }
+
+    public void removePosition(Position p) {
+        positions.remove(p);
+        if (p.getEmployees().contains(this)) {
+            p.deleteEmployee(this);
+        }
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) return true;
+        if (o == null || getClass() != o.getClass()) return false;
+        Employee e = (Employee) o;
+        return Objects.equals(id, e.id);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(id);
+    }
+}

src/main/java/com/example/springip/lab3/models/Position.java

@@ -0,0 +1,73 @@
+package com.example.springip.lab3.models;
+
+import jakarta.persistence.*;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Objects;
+
+@Entity
+public class Position {
+    @Id
+    @GeneratedValue(strategy = GenerationType.AUTO)
+    private Long Id;
+
+    private String name;
+
+    //mappedBy - атрибут, указывающий, что классом-владельцем отношений является другой класс
+    @ManyToMany(mappedBy = "positions", cascade = CascadeType.ALL, fetch = FetchType.EAGER)
+    private List<Employee> employees = new ArrayList<>();
+
+    public Position() {
+    }
+
+    public Position(String name) {
+        this.name = name;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public Long getId() {
+        return Id;
+    }
+
+    public List<Employee> getEmployees() {
+        return employees;
+    }
+
+    public void setEmployees(List<Employee> employees) {
+        this.employees = employees;
+    }
+
+    public void addNewEmployee(Employee e) {
+        employees.add(e);
+        if (!e.getPositions().contains(this)) {
+            e.addNewPosition(this);
+        }
+    }
+    public void deleteEmployee(Employee e) {
+        employees.remove(e);
+        if (e.getPositions().contains(this)) {
+            e.removePosition(this);
+        }
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) return true;
+        if (o == null || getClass() != o.getClass()) return false;
+        Position student = (Position) o;
+        return Objects.equals(Id, student.Id);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(Id);
+    }
+}

src/main/java/com/example/springip/lab3/service/CompanyService.java

@@ -0,0 +1,91 @@
+package com.example.springip.lab3.service;
+
+import com.example.springip.lab3.models.Company;
+import com.example.springip.lab3.models.Employee;
+import jakarta.persistence.EntityManager;
+import jakarta.persistence.EntityNotFoundException;
+import jakarta.persistence.PersistenceContext;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+import org.springframework.util.StringUtils;
+
+import java.util.List;
+
+@Service
+public class CompanyService {
+    @PersistenceContext
+    private EntityManager em;
+
+    @Transactional
+    public Company addCompany(String name) {
+        if (!StringUtils.hasText(name)) {
+            throw new IllegalArgumentException("Student name is null or empty");
+        }
+        final Company company = new Company(name);
+        em.persist(company);
+        return company;
+    }
+
+    @Transactional(readOnly = true)
+    public Company findCompany(Long id) {
+        final Company company = em.find(Company.class, id);
+        if (company == null) {
+            throw new EntityNotFoundException(String.format("Company with id [%s] is not found", id));
+        }
+        return company;
+    }
+
+    @Transactional(readOnly = true)
+    public Company findCompany(String name) {
+        Company company = em.createQuery("select c from Company c WHERE c.name = :companyName", Company.class)
+                .setParameter("companyName",name)
+                .getSingleResult();
+        if (company == null) {
+            throw new EntityNotFoundException(String.format("Company with name [%s] is not found", name));
+        }
+        return company;
+    }
+
+    @Transactional(readOnly = true)
+    public List<Company> findAllCompanies() {
+        return em.createQuery("select c from Company c", Company.class)
+                .getResultList();
+    }
+
+    @Transactional
+    public Company updateCompany(Long id, String name) {
+        if (!StringUtils.hasText(name)) {
+            throw new IllegalArgumentException("Company name is null or empty");
+        }
+        final Company currentCompany = findCompany(id);
+        currentCompany.setName(name);
+
+        return em.merge(currentCompany);
+    }
+
+    @Transactional
+    public Company deleteCompany(Long id) {
+        final Company currentCompany = findCompany(id);
+        em.remove(currentCompany);
+        return currentCompany;
+    }
+
+    @Transactional
+    public void deleteAllCompanies() {
+        em.createQuery("delete from Company").executeUpdate();
+    }
+
+    @Transactional
+    public void addNewEmployee(Long id, Employee employee) {
+        Company currentCompany = findCompany(id);
+        currentCompany.addNewEmployee(employee);
+        em.merge(currentCompany);
+    }
+
+    @Transactional
+    public void deleteEmployee(Long id, Employee employee) {
+        Company currentCompany = findCompany(id);
+        currentCompany.deleteEmployee(employee);
+        em.merge(employee);
+    }
+}

src/main/java/com/example/springip/lab3/service/EmployeeService.java

@@ -0,0 +1,100 @@
+package com.example.springip.lab3.service;
+
+import com.example.springip.lab3.models.Company;
+import com.example.springip.lab3.models.Employee;
+import com.example.springip.lab3.models.Position;
+import jakarta.persistence.EntityManager;
+import jakarta.persistence.EntityNotFoundException;
+import jakarta.persistence.PersistenceContext;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+import org.springframework.util.StringUtils;
+
+import java.util.List;
+
+@Service
+public class EmployeeService {
+    @PersistenceContext
+    private EntityManager em;
+
+    @Transactional
+    public Employee addEmployee(String surname, String name, String phoneNumber) {
+        if (!StringUtils.hasText(name) ||!StringUtils.hasText(surname) || !StringUtils.hasText(phoneNumber)) {
+            throw new IllegalArgumentException("Employee's data is null or empty");
+        }
+        final Employee employee = new Employee(surname, name, phoneNumber);
+        em.persist(employee);
+        return employee;
+    }
+
+    @Transactional
+    public Employee findEmployee(Long id) {
+        final Employee employee = em.find(Employee.class, id);
+        if (employee == null) {
+            throw new EntityNotFoundException(String.format("Employee with id [%s] is not found", id));
+        }
+        return employee;
+    }
+
+    @Transactional(readOnly = true)
+    public List<Employee> findAllEmployees() {
+        return em.createQuery("select e from Employee e", Employee.class)
+                .getResultList();
+    }
+
+    @Transactional
+    public Employee updateCompany(Long id, String surname, String name, String phoneNumber) {
+        if (!StringUtils.hasText(name) ||!StringUtils.hasText(surname) || !StringUtils.hasText(phoneNumber)) {
+            throw new IllegalArgumentException("Employee's data is null or empty");
+        }
+        final Employee currentEmployee = findEmployee(id);
+        currentEmployee.setName(name);
+        currentEmployee.setSurname(surname);
+        currentEmployee.setPhoneNumber(phoneNumber);
+
+        return em.merge(currentEmployee);
+    }
+
+    @Transactional
+    public Employee deleteEmployee(Long id) {
+        final Employee employee = findEmployee(id);
+        em.remove(employee);
+        return employee;
+    }
+
+    @Transactional
+    public void deleteAllEmployees() {
+        em.createQuery("delete from Employee").executeUpdate();
+    }
+
+    @Transactional
+    public void addCompany(Long id, Company c) {
+        final Employee employee = findEmployee(id);
+        employee.setCompany(c);
+        em.merge(employee);
+    }
+
+    @Transactional
+    public void deleteCompany(Long id) {
+        final Employee employee = findEmployee(id);
+        employee.deleteCompany();
+        em.merge(employee);
+    }
+
+    @Transactional
+    public void addPosition(Long id, Position p) {
+        Employee e = findEmployee(id);
+        e.addNewPosition(p);
+        System.out.println(e.getPositions().size());
+        em.merge(e);
+    }
+
+    @Transactional
+    public void deletePosition(Long id, Position p) {
+        Employee e = findEmployee(id);
+        e.removePosition(p);
+        System.out.println("Количество должностей после удаления: " + e.getPositions().size());
+        em.merge(e);
+        em.flush();
+    }
+}

src/main/java/com/example/springip/lab3/service/PositionService.java

@@ -0,0 +1,69 @@
+package com.example.springip.lab3.service;
+
+import com.example.springip.lab3.models.Company;
+import com.example.springip.lab3.models.Employee;
+import com.example.springip.lab3.models.Position;
+import jakarta.persistence.EntityManager;
+import jakarta.persistence.EntityNotFoundException;
+import jakarta.persistence.PersistenceContext;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+import org.springframework.util.StringUtils;
+
+import java.util.List;
+
+@Service
+public class PositionService {
+    @PersistenceContext
+    private EntityManager em;
+
+    @Transactional
+    public Position addPosition(String name) {
+        if (!StringUtils.hasText(name)) {
+            throw new IllegalArgumentException("Employee's data is null or empty");
+        }
+        final Position position = new Position(name);
+        em.persist(position);
+        return position;
+    }
+
+    @Transactional
+    public Position findPosition(Long id) {
+        final Position position = em.find(Position.class, id);
+        if (position == null) {
+            throw new EntityNotFoundException(String.format("Position with id [%s] is not found", id));
+        }
+        return position;
+    }
+
+    @Transactional(readOnly = true)
+    public List<Position> findAllPositions() {
+        return em.createQuery("select p from Position p", Position.class)
+                .getResultList();
+    }
+
+    @Transactional
+    public Position updatePosition(Long id, String surname, String name, String phoneNumber) {
+        if (!StringUtils.hasText(name) ||!StringUtils.hasText(surname) || !StringUtils.hasText(phoneNumber)) {
+            throw new IllegalArgumentException("Employee's data is null or empty");
+        }
+        final Position currentPosition = findPosition(id);
+        currentPosition.setName(name);
+
+        return em.merge(currentPosition);
+    }
+
+    @Transactional
+    public Position deletePosition(Long id) {
+        final Position p = findPosition(id);
+        em.remove(p);
+        return p;
+    }
+
+    @Transactional
+    public void deleteAllPositions() {
+        em.createQuery("delete from Position").executeUpdate();
+    }
+
+
+}

src/main/resources/application.properties

@@ -1 +1,11 @@
-
+spring.main.banner-mode=off
+#server.port=8080
+spring.datasource.url=jdbc:h2:file:./data
+spring.datasource.driverClassName=org.h2.Driver
+spring.datasource.username=sa
+spring.datasource.password=password
+spring.jpa.database-platform=org.hibernate.dialect.H2Dialect
+spring.jpa.hibernate.ddl-auto=update
+spring.h2.console.enabled=true
+spring.h2.console.settings.trace=false
+spring.h2.console.settings.web-allow-others=false

src/test/java/com/example/springip/CompanyServiceTests.java

@@ -0,0 +1,117 @@
+package com.example.springip;
+
+import com.example.springip.lab3.models.Company;
+import com.example.springip.lab3.models.Employee;
+import com.example.springip.lab3.service.CompanyService;
+import com.example.springip.lab3.service.EmployeeService;
+import jakarta.persistence.EntityNotFoundException;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Test;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+
+@SpringBootTest
+public class CompanyServiceTests {
+    @Autowired
+    private CompanyService companyService;
+
+    @Autowired
+    private EmployeeService employeeService;
+
+
+    @Test
+    public void testDeleteAllCompanies() {
+        companyService.deleteAllCompanies();
+        int n = 3;
+        for (int i = 0; i < n; i++) {
+            String name = "Company" + i;
+            companyService.addCompany(name);
+        }
+        companyService.deleteAllCompanies();
+        Assertions.assertEquals(companyService.findAllCompanies().size(), 0);
+    }
+
+    @Test
+    public void testDeleteCompany() {
+        companyService.deleteAllCompanies();
+        String name = "Company1";
+        Company c = companyService.addCompany(name);
+        companyService.deleteCompany(c.getId());
+        Assertions.assertThrows(EntityNotFoundException.class, () -> {companyService.findCompany(c.getId());});
+    }
+
+    @Test
+    public void testAddCompany() {
+        companyService.deleteAllCompanies();
+        String name = "Company1";
+        Company c = companyService.addCompany(name);
+        Assertions.assertNotNull(companyService.findCompany(c.getId()));
+        companyService.deleteAllCompanies();
+    }
+
+    @Test
+    public void testUpdateCompany() {
+        companyService.deleteAllCompanies();
+        String name = "Company1";
+        companyService.addCompany(name);
+        String name2 = "Company2";
+        companyService.updateCompany(companyService.findCompany(name).getId(), name2);
+        Assertions.assertNotNull(companyService.findCompany(name2));
+        companyService.deleteAllCompanies();
+    }
+
+
+    @Test
+    public void testFindAllCompanies() {
+        companyService.deleteAllCompanies();
+        int n = 3;
+        for (int i = 0; i < n; i++) {
+            String name = "Company" + i;
+            companyService.addCompany(name);
+        }
+
+        Assertions.assertEquals(companyService.findAllCompanies().size(), n);
+        companyService.deleteAllCompanies();
+    }
+
+    @Test
+    public void testAddEmployee() {
+
+        employeeService.deleteAllEmployees();
+        companyService.deleteAllCompanies();
+
+
+        final String name = "Company";
+        Company c = companyService.addCompany(name);
+        Employee newEmployee = employeeService.addEmployee("cha", "chacha", "111");
+        companyService.addNewEmployee(c.getId(), newEmployee);
+
+        Assertions.assertTrue(companyService.findCompany(c.getId()).getEmployees().contains(newEmployee));
+
+
+        employeeService.deleteAllEmployees();
+        companyService.deleteAllCompanies();
+    }
+
+    @Test
+    public void testDeleteEmployee() {
+        employeeService.deleteAllEmployees();
+        companyService.deleteAllCompanies();
+
+
+        final String name = "Company";
+        Company c = companyService.addCompany(name);
+        Employee newEmployee = employeeService.addEmployee("cha", "chacha", "111");
+
+        companyService.addNewEmployee(c.getId(), newEmployee);
+        Assertions.assertTrue(companyService.findCompany(c.getId()).getEmployees().contains(newEmployee));
+
+        companyService.deleteEmployee(c.getId(), newEmployee);
+        Company cFromDB =  companyService.findCompany(c.getId());
+        Assertions.assertFalse(companyService.findCompany(c.getId()).getEmployees().contains(newEmployee));
+
+        employeeService.deleteAllEmployees();
+        companyService.deleteAllCompanies();
+
+    }
+}

src/test/java/com/example/springip/EmployeeServiceTests.java

@@ -0,0 +1,92 @@
+package com.example.springip;
+
+import com.example.springip.lab3.models.Company;
+import com.example.springip.lab3.models.Employee;
+import com.example.springip.lab3.service.CompanyService;
+import com.example.springip.lab3.service.EmployeeService;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Test;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+
+@SpringBootTest
+public class EmployeeServiceTests {
+    @Autowired
+    private EmployeeService employeeService;
+
+    @Autowired
+    private CompanyService companyService;
+
+    @Test
+    public void testAddEmployee() {
+        employeeService.deleteAllEmployees();
+
+        employeeService.addEmployee("name", "surname", "111");
+        Assertions.assertEquals(1, employeeService.findAllEmployees().size());
+        employeeService.deleteAllEmployees();
+    }
+
+    @Test
+    public void testUpdateEmployee() {
+        employeeService.deleteAllEmployees();
+        final String newName = "name";
+
+        Employee e  = employeeService.addEmployee("surname", "name", "111");
+        employeeService.updateCompany(e.getId(),e.getSurname(), newName, e.getPhoneNumber());
+        Assertions.assertEquals(newName, employeeService.findEmployee(e.getId()).getName());
+        employeeService.deleteAllEmployees();
+    }
+
+    @Test
+    public void testDeleteEmployee() {
+        employeeService.deleteAllEmployees();
+
+        Employee e = employeeService.addEmployee("name", "surname", "111");
+        employeeService.deleteEmployee(e.getId());
+        Assertions.assertEquals(0, employeeService.findAllEmployees().size());
+        employeeService.deleteAllEmployees();
+    }
+
+    @Test
+    public void testFindAllEmployee() {
+        employeeService.deleteAllEmployees();
+        int n = 3;
+        for (int i = 0; i < n; i++) {
+            employeeService.addEmployee("name", "surname", "111");
+        }
+        Assertions.assertEquals(n, employeeService.findAllEmployees().size());
+        employeeService.deleteAllEmployees();
+    }
+
+    @Test
+    public void testAddCompany() {
+        employeeService.deleteAllEmployees();
+        companyService.deleteAllCompanies();
+
+        Employee e = employeeService.addEmployee("name", "surname", "111");
+        Company c = companyService.addCompany("Comp");
+        companyService.addNewEmployee(c.getId(), e);
+        Assertions.assertEquals(c, employeeService.findEmployee(e.getId()).getCompany());
+
+        employeeService.deleteAllEmployees();
+        companyService.deleteAllCompanies();
+    }
+
+    @Test
+    public void testDeleteFromCompany() {
+        employeeService.deleteAllEmployees();
+        companyService.deleteAllCompanies();
+
+        Employee e = employeeService.addEmployee("name", "surname", "111");
+        Company c = companyService.addCompany("Comp");
+
+        employeeService.addCompany(e.getId(), c);
+        Assertions.assertEquals(c, employeeService.findEmployee(e.getId()).getCompany());
+
+        employeeService.deleteCompany(e.getId());
+        Assertions.assertNull(employeeService.findEmployee(e.getId()).getCompany());
+
+        employeeService.deleteAllEmployees();
+        companyService.deleteAllCompanies();
+    }
+}

src/test/java/com/example/springip/PositionServiceTests.java

@@ -0,0 +1,56 @@
+package com.example.springip;
+
+import com.example.springip.lab3.models.Employee;
+import com.example.springip.lab3.models.Position;
+import com.example.springip.lab3.service.EmployeeService;
+import com.example.springip.lab3.service.PositionService;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Test;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.stereotype.Service;
+
+@SpringBootTest
+public class PositionServiceTests {
+    @Autowired
+    private PositionService positionService;
+
+    @Autowired
+    private EmployeeService employeeService;
+
+
+    @Test
+    public void testAddEmployee() {
+        employeeService.deleteAllEmployees();
+        positionService.deleteAllPositions();
+
+        Position p = positionService.addPosition("Position");
+        Employee e = employeeService.addEmployee("1", "2", "33");
+
+        employeeService.addPosition(e.getId(), p);
+        Assertions.assertTrue(employeeService.findEmployee(e.getId()).getPositions().contains(p));
+        Assertions.assertTrue(positionService.findPosition(p.getId()).getEmployees().contains(e));
+
+        employeeService.deleteAllEmployees();
+        positionService.deleteAllPositions();
+
+    }
+
+    @Test
+    public void testDeleteEmployee() {
+        employeeService.deleteAllEmployees();
+        positionService.deleteAllPositions();
+
+        Position p = positionService.addPosition("Position");
+        Employee e = employeeService.addEmployee("1", "2", "33");
+
+        employeeService.addPosition(e.getId(), p);
+        employeeService.deletePosition(e.getId(), p);
+        Assertions.assertFalse(employeeService.findEmployee(e.getId()).getPositions().contains(p));
+        Assertions.assertFalse(positionService.findPosition(p.getId()).getEmployees().contains(e));
+
+        employeeService.deleteAllEmployees();
+        positionService.deleteAllPositions();
+
+    }
+}

src/test/java/com/example/springip/SpringipApplicationTests.java

@@ -1,6 +1,6 @@
 package com.example.springip;
 
-import com.example.springip.service.OperationService;
+import com.example.springip.lab2.service.OperationService;
 import org.junit.jupiter.api.Assertions;
 import org.junit.jupiter.api.Test;
 import org.springframework.beans.factory.annotation.Autowired;