public void DeleteCategory()
{
var userService = new UserService();
var service = new MoneyService();
var userId = userService.Register("testUser" + Guid.NewGuid(), "testPassword");
service.CreateCategory(userId, "Test Category", 1);
var categories = service.GetAllCategories(userId);
service.DeleteCategory(userId, categories[0].Id);
categories = service.GetAllCategories(userId);
Assert.Equal(0, categories.Count);
}
