public void Can_get_navigation_and_can_try_get_navigation()
{
var customerType = new EntityType(typeof(Customer), new Model());
var customerKey = customerType.GetOrAddKey(customerType.GetOrAddProperty(Customer.IdProperty));
var orderType = new EntityType(typeof(Order), new Model());
var foreignKeyProperty = orderType.GetOrAddProperty(Order.CustomerIdProperty);
var customerForeignKey = orderType.GetOrAddForeignKey(foreignKeyProperty, customerKey);
var customerNavigation = orderType.GetOrAddNavigation("Customer", customerForeignKey, pointsToPrincipal: true);
Assert.Same(customerNavigation, orderType.FindNavigation("Customer"));
Assert.Same(customerNavigation, orderType.GetNavigation("Customer"));
Assert.Null(orderType.FindNavigation("Nose"));
Assert.Equal(
Strings.NavigationNotFound("Nose", typeof(Order).FullName),
Assert.Throws<ModelItemNotFoundException>(() => orderType.GetNavigation("Nose")).Message);
}
