silverstripe-framework/tests/php/Forms/GroupedDropdownFieldTest.php

<?php

namespace SilverStripe\Forms\Tests;

use SilverStripe\Dev\SapphireTest;
use SilverStripe\Forms\GroupedDropdownField;
use SilverStripe\Forms\RequiredFields;

class GroupedDropdownFieldTest extends SapphireTest
{

    public function testValidation()
    {
        $field = GroupedDropdownField::create(
            'Test',
            'Testing',
            array(
            "1" => "One",
            "Group One" => array(
                "2" => "Two",
                "3" => "Three"
            ),
            "Group Two" => array(
                "4" => "Four"
            )
            )
        );

        $this->assertEquals(array("1", "2", "3", "4"), $field->getValidValues());

        $validator = new RequiredFields();

        $field->setValue("1");
        $this->assertTrue($field->validate($validator));

        //test grouped values
        $field->setValue("3");
        $this->assertTrue($field->validate($validator));

        //non-existent value should make the field invalid
        $field->setValue("Over 9000");
        $this->assertFalse($field->validate($validator));

        //empty string shouldn't validate
        $field->setValue('');
        $this->assertFalse($field->validate($validator));

        //empty field should validate after being set
        $field->setEmptyString('Empty String');
        $field->setValue('');
        $this->assertTrue($field->validate($validator));

        //disabled items shouldn't validate
        $field->setDisabledItems(array('1'));
        $field->setValue('1');

        $this->assertEquals(array("2", "3", "4"), $field->getValidValues());
        $this->assertEquals(array("1"), $field->getDisabledItems());

        $this->assertFalse($field->validate($validator));
    }
}