Некоторые тесты всяких штук

src/main/java/com/labwork1/app/student/model/Order.java

@@ -3,6 +3,7 @@ package com.labwork1.app.student.model;
 import jakarta.persistence.*;
 
 import java.sql.Date;
+import java.util.ArrayList;
 import java.util.List;
 import java.util.Objects;
 
@@ -27,13 +28,14 @@ public class Order {
     public Order() {
     }
 
-    public Order(Customer customer, Date dateOfPurchase, List<Ticket> tickets) {
+    public Order(Customer customer, Date dateOfPurchase) {
         this.customer = customer;
         this.dateOfPurchase = dateOfPurchase;
-        this.tickets = tickets;
     }
 
     public void addTicket(Ticket ticket) {
+        if (tickets == null)
+            tickets = new ArrayList<>();
         tickets.add(ticket);
         if (ticket.getOrders() == null) {
             ticket.setOrder(this);

src/main/java/com/labwork1/app/student/service/OrderService.java

@@ -18,12 +18,12 @@ public class OrderService {
     private EntityManager em;
 
     @Transactional
-    public Order addOrder(Customer customer, List<Ticket> tickets) {
+    public Order addOrder(Customer customer) {
-        if (customer == null || tickets.size() == 0) {
+        if (customer == null) {
             throw new IllegalArgumentException("addOrder empty fields");
         }
         final Order order = new Order(customer,
-                new Date(System.currentTimeMillis()), tickets);
+                new Date(System.currentTimeMillis()));
         em.persist(order);
         return order;
     }
@@ -73,6 +73,19 @@ public class OrderService {
         return currentOrder;
     }
 
+    @Transactional
+    public void deleteTicketInOrder(Long id, Long ticket_id) {
+//        final Order currentOrder = findOrder(id);
+//        em.remove(currentOrder);
+//        return currentOrder;
+        final Order currentReader = findOrder(id);
+        final Ticket currentManga = em.find(Ticket.class, ticket_id);
+        currentReader.getTickets().remove(currentManga);
+        currentManga.getOrders().remove(currentReader);
+        em.merge(currentReader);
+        em.merge(currentManga);
+    }
+
     @Transactional
     public void deleteAllOrders() {
         em.createQuery("delete from Order").executeUpdate();

src/test/java/com/labwork1/app/JpaCustomerTests.java

@@ -15,7 +15,6 @@ import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.test.context.SpringBootTest;
 
 import java.sql.Timestamp;
-import java.util.ArrayList;
 import java.util.List;
 
 @SpringBootTest
@@ -36,16 +35,12 @@ public class JpaCustomerTests {
 
         final Ticket ticket1 = ticketService.addTicket("Меню", 300.0, new Timestamp(System.currentTimeMillis()));
         final Ticket ticket2 = ticketService.addTicket("Аватар", 200.0, new Timestamp(System.currentTimeMillis()));
-        List<Ticket> tickets = new ArrayList<>();
-        tickets.add(ticket1);
-        tickets.add(ticket2);
 
         final Customer customer1 = customerService.addCustomer("Родион", "Иванов");
 
-        final Order order = orderService
+        final Order order0 = orderService.addOrder(customerService.findCustomer(customer1.getId()));
-                .addOrder(customerService.findCustomer(customer1.getId()), tickets);
+        final Order order1 = orderService.findOrder(order0.getId());
-        final Order order1 = orderService.findOrder(order.getId());
+        Assertions.assertEquals(order0, order1);
-        Assertions.assertEquals(order, order1);
 
         Assertions.assertEquals(customerService
                 .findCustomer(customer1.getId()).getOrders().size(), 1);
@@ -56,16 +51,17 @@ public class JpaCustomerTests {
         final Customer customer2 = customerService.addCustomer("Иннокентий", "Иванов");
 
         final Ticket ticket3 = ticketService.addTicket("Чебурашка", 300.0, new Timestamp(System.currentTimeMillis()));
-        tickets.clear();
+
-        tickets.add(ticket3);
         final Order order2 = orderService
-                .addOrder(customerService.findCustomer(customer2.getId()), tickets);
+                .addOrder(customerService.findCustomer(customer2.getId()));
 
         orderService.addTicket(order2.getId(), ticket1);
         orderService.addTicket(order2.getId(), ticket2);
 
+        orderService.deleteTicketInOrder(order2.getId(), ticket2.getId());
+
         Assertions.assertEquals(orderService
-                .findOrder(order2.getId()).getTickets().size(), 3);
+                .findOrder(order2.getId()).getTickets().size(), 2);
 
         customerService.deleteCustomer(customer2.getId());
         Assertions.assertThrows(EntityNotFoundException.class, () -> customerService.findCustomer(customer2.getId()));
@@ -133,5 +129,7 @@ public class JpaCustomerTests {
         final List<Ticket> tickets2 = ticketService.findAllTickets();
         log.info(tickets2.toString() + "testTicketReadAllEmpty");
         Assertions.assertEquals(tickets2.size(), 0);
+
+
     }
 }