source: src/test/java/com/example/rezevirajmasa/demo/RestController.java

package com.example.rezevirajmasa.demo;

import com.example.rezevirajmasa.demo.model.Restaurant;
import com.example.rezevirajmasa.demo.repository.RestaurantRepository;
import org.assertj.core.api.Assertions;
import org.junit.jupiter.api.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.autoconfigure.jdbc.AutoConfigureTestDatabase;
import org.springframework.boot.test.autoconfigure.orm.jpa.DataJpaTest;
import org.springframework.test.annotation.Rollback;

import java.util.List;

@DataJpaTest
@AutoConfigureTestDatabase(replace = AutoConfigureTestDatabase.Replace.NONE)
@Rollback(false)
public class RestController {
    @Autowired private RestaurantRepository restaurantRepository;

    @Test
    public void getAllRestaurants() {
        List<Restaurant> restaurantList = restaurantRepository.findAll();
        Assertions.assertThat(restaurantList).hasSizeGreaterThan(0);

        for(Restaurant restaurant : restaurantList)
            System.out.println(restaurant);
    }
}