public class Test {
private static String url = "jdbc:mysql://localhost:3306/";
public static void main(String[] args) throws Exception {
Connection connection = createConnection("test", "root", "geekdb");
Storage storage = new DatabaseStorage(connection);
List<Cat> cats = storage.list(Cat.class);
for (Cat cat : cats) {
storage.delete(cat);
}
cats = storage.list(Cat.class);
if (!cats.isEmpty()) throw new Exception("Cats should not be in database!");
for(int i = 1; i <= 20; i++) {
Cat cat = new Cat();
cat.setName("cat" + i);
cat.setAge(i);
storage.save(cat);
}
cats = storage.list(Cat.class);
if (cats.size() != 20) throw new Exception("Number of cats in storage should be 20!");
User user = new User();
user.setAdmin(true);
user.setAge(23);
user.setName("Victor");
user.setBalance(22.23);
storage.save(user);
User user1 = storage.get(User.class, user.getId());
if (!user1.getName().equals(user.getName())) throw new Exception("Users should be equals!");
user.setAdmin(false);
storage.save(user);
User user2 = storage.get(User.class, user.getId());
if (!user.getAdmin().equals(user2.getAdmin())) throw new Exception("Users should be updated!");
storage.delete(user1);
User user3 = storage.get(User.class, user.getId());
if (user3 != null) throw new Exception("User should be deleted!");
connection.close();
}