Something was fixed and now it works.

src/main/java/ru/ulstu/is/sbapp/Movie/Model/Movie.java

@@ -4,6 +4,7 @@ import ru.ulstu.is.sbapp.Genre.Model.Genre;
 
 import javax.persistence.*;
 import javax.validation.constraints.NotBlank;
+import javax.validation.constraints.NotNull;
 import java.util.Objects;
 
 @Entity
@@ -16,10 +17,10 @@ public class Movie
     @NotBlank(message = "Movie's title can't be null or empty")
     private String title;
     @Column
-    @NotBlank(message = "Movie's length can't be null or empty")
+    @NotNull(message = "Movie's length can't be null or empty")
     private int length;
     @Column
-    @NotBlank(message = "Movie's score can't be null or empty")
+    @NotNull(message = "Movie's score can't be null or empty")
     private double score;
     @ManyToOne(fetch = FetchType.EAGER)
     @JoinColumn(name = "genre_fk")

src/main/java/ru/ulstu/is/sbapp/Movie/Service/MovieService.java

@@ -48,7 +48,9 @@ public class MovieService
         }
 
         final Movie movie = new Movie(title,length,score,specGenre.get());
-        movie.getGenre().getMovies().add(movie);
+        validatorUtil.validate(movie);
+
+        specGenre.get().getMovies().add(movie);
 
         if(specCustomer.isEmpty())
         {
@@ -56,7 +58,7 @@ public class MovieService
         }
 
         specCustomer.get().getMovies().add(movie);
-        validatorUtil.validate(movie);
+
         return movieRepository.save(movie);
     }
 

src/main/java/ru/ulstu/is/sbapp/SbappApplication.java

@@ -3,11 +3,10 @@ package ru.ulstu.is.sbapp;
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
 import org.springframework.context.annotation.ComponentScan;
-import org.springframework.web.bind.annotation.GetMapping;
-import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RestController;
 
 @SpringBootApplication
-@ComponentScan(basePackages =  { "ru.ulstu.is.sbapp.Movie","ru.ulstu.is.sbapp.Customer","ru.ulstu.is.sbapp.Genre"})
+@RestController
 public class SbappApplication {
 
 	public static void main(String[] args) {

src/main/resources/application.properties

@@ -5,7 +5,7 @@ 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.jpa.hibernate.ddl-auto=create-drop
 spring.h2.console.enabled=true
 spring.h2.console.settings.trace=false
 spring.h2.console.settings.web-allow-others=false

src/test/java/ru/ulstu/is/sbapp/JpaCustomerTests.java

@@ -6,10 +6,10 @@ import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.test.context.SpringBootTest;
+import ru.ulstu.is.sbapp.Customer.Exception.CustomerNotFoundException;
 import ru.ulstu.is.sbapp.Customer.Model.Customer;
 import ru.ulstu.is.sbapp.Customer.Service.CustomerService;
 
-import javax.persistence.EntityNotFoundException;
 import java.util.List;
 
 @SpringBootTest
@@ -44,7 +44,7 @@ public class JpaCustomerTests
     void testCustomerReadNotFound()
     {
         customerService.deleteAllCustomers();
-        Assertions.assertThrows(EntityNotFoundException.class, () -> customerService.findCustomer(-1L));
+        Assertions.assertThrows(CustomerNotFoundException.class, () -> customerService.findCustomer(-1L));
     }
 
     @Test
@@ -86,7 +86,7 @@ public class JpaCustomerTests
         final Customer customer1 = customerService.addCustomer("Nikita Lisov","1234");
         final Customer customer2 = customerService.addCustomer("Evelina Potter","12345");
         customerService.deleteCustomer(customer1.getId());
-        Assertions.assertThrows(EntityNotFoundException.class, () -> customerService.findCustomer(customer1.getId()));
+        Assertions.assertThrows(CustomerNotFoundException.class, () -> customerService.findCustomer(customer1.getId()));
 
     }
 }

src/test/java/ru/ulstu/is/sbapp/JpaGenreTests.java

@@ -6,10 +6,10 @@ import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.test.context.SpringBootTest;
+import ru.ulstu.is.sbapp.Genre.Exception.GenreNotFoundException;
 import ru.ulstu.is.sbapp.Genre.Model.Genre;
 import ru.ulstu.is.sbapp.Genre.Service.GenreService;
 
-import javax.persistence.EntityNotFoundException;
 import java.util.List;
 
 @SpringBootTest
@@ -44,7 +44,7 @@ public class JpaGenreTests
     void testCustomerReadNotFound()
     {
         genreService.deleteAllGenres();
-        Assertions.assertThrows(EntityNotFoundException.class, () -> genreService.findGenre(-1L));
+        Assertions.assertThrows(GenreNotFoundException.class, () -> genreService.findGenre(-1L));
     }
 
     @Test
@@ -86,7 +86,7 @@ public class JpaGenreTests
         final Genre genre1 = genreService.addGenre("Nikita Lisov");
         final Genre genre2 = genreService.addGenre("Evelina Potter");
         genreService.deleteGenre(genre1.getId());
-        Assertions.assertThrows(EntityNotFoundException.class, () -> genreService.findGenre(genre1.getId()));
+        Assertions.assertThrows(GenreNotFoundException.class, () -> genreService.findGenre(genre1.getId()));
 
     }
 }

src/test/java/ru/ulstu/is/sbapp/JpaMovieTests.java

@@ -6,6 +6,7 @@ import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.test.context.SpringBootTest;
+import ru.ulstu.is.sbapp.Movie.Exception.MovieNotFoundException;
 import ru.ulstu.is.sbapp.Movie.Service.MovieService;
 import ru.ulstu.is.sbapp.Movie.Model.Movie;
 import ru.ulstu.is.sbapp.Customer.Model.Customer;
@@ -13,7 +14,6 @@ import ru.ulstu.is.sbapp.Customer.Service.CustomerService;
 import ru.ulstu.is.sbapp.Genre.Model.Genre;
 import ru.ulstu.is.sbapp.Genre.Service.GenreService;
 
-import javax.persistence.EntityNotFoundException;
 import java.util.ArrayList;
 import java.util.List;
 
@@ -151,7 +151,7 @@ public class JpaMovieTests
         customerService.deleteAllCustomers();
         genreService.deleteAllGenres();
 
-        Assertions.assertThrows(EntityNotFoundException.class, () -> movieService.findMovie(-1L));
+        Assertions.assertThrows(MovieNotFoundException.class, () -> movieService.findMovie(-1L));
     }
 
     @Test