CheckoutForm::checkoutSubmit PHP Method

    public function checkoutSubmit($data, $form)
    {
        //form validation has passed by this point, so we can save data
        $this->config->setData($form->getData());
        if ($this->redirectlink) {
            return $this->controller->redirect($this->redirectlink);
        }
        return $this->controller->redirectBack();
    }

 public function testCheckoutForm()
 {
     $order = ShoppingCart::curr();
     $config = new SinglePageCheckoutComponentConfig($order);
     $form = new CheckoutForm($this->checkoutcontroller, "OrderForm", $config);
     $data = array("CustomerDetailsCheckoutComponent_FirstName" => "Jane", "CustomerDetailsCheckoutComponent_Surname" => "Smith", "CustomerDetailsCheckoutComponent_Email" => "*****@*****.**", "ShippingAddressCheckoutComponent_Country" => "NZ", "ShippingAddressCheckoutComponent_Address" => "1234 Green Lane", "ShippingAddressCheckoutComponent_AddressLine2" => "Building 2", "ShippingAddressCheckoutComponent_City" => "Bleasdfweorville", "ShippingAddressCheckoutComponent_State" => "Trumpo", "ShippingAddressCheckoutComponent_PostalCode" => "4123", "ShippingAddressCheckoutComponent_Phone" => "032092277", "BillingAddressCheckoutComponent_Country" => "NZ", "BillingAddressCheckoutComponent_Address" => "1234 Green Lane", "BillingAddressCheckoutComponent_AddressLine2" => "Building 2", "BillingAddressCheckoutComponent_City" => "Bleasdfweorville", "BillingAddressCheckoutComponent_State" => "Trumpo", "BillingAddressCheckoutComponent_PostalCode" => "4123", "BillingAddressCheckoutComponent_Phone" => "032092277", "PaymentCheckoutComponent_PaymentMethod" => "Dummy", "NotesCheckoutComponent_Notes" => "Leave it around the back", "TermsCheckoutComponent_ReadTermsAndConditions" => "1");
     $form->loadDataFrom($data, true);
     $valid = $form->validate();
     $errors = $form->getValidator()->getErrors();
     $this->assertTrue($valid);
     $form->checkoutSubmit($data, $form);
     $this->assertEquals("Jane", $order->FirstName);
     $shipping = $order->ShippingAddress();
     $this->assertEquals("NZ", $shipping->Country);
     $this->assertEquals("Cart", $order->Status);
     $this->markTestIncomplete('test invalid data');
     $this->markTestIncomplete('test components individually');
 }