Edit: ArrayNodeTest.php

Editing: ArrayNodeTest.php

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<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Config\Tests\Definition;

use Symfony\Component\Config\Definition\ArrayNode;
use Symfony\Component\Config\Definition\ScalarNode;

class ArrayNodeTest extends \PHPUnit_Framework_TestCase
{
    /**
     * @expectedException \Symfony\Component\Config\Definition\Exception\InvalidTypeException
     */
    public function testNormalizeThrowsExceptionWhenFalseIsNotAllowed()
    {
        $node = new ArrayNode('root');
        $node->normalize(false);
    }

/**
     * @expectedException        \Symfony\Component\Config\Definition\Exception\InvalidConfigurationException
     * @expectedExceptionMessage Unrecognized options "foo" under "root"
     */
    public function testExceptionThrownOnUnrecognizedChild()
    {
        $node = new ArrayNode('root');
        $node->normalize(array('foo' => 'bar'));
    }

/**
     * Tests that no exception is thrown for an unrecognized child if the
     * ignoreExtraKeys option is set to true.
     *
     * Related to testExceptionThrownOnUnrecognizedChild
     */
    public function testIgnoreExtraKeysNoException()
    {
        $node = new ArrayNode('roo');
        $node->setIgnoreExtraKeys(true);

$node->normalize(array('foo' => 'bar'));
        $this->assertTrue(true, 'No exception was thrown when setIgnoreExtraKeys is true');
    }

/**
     * @dataProvider getPreNormalizationTests
     */
    public function testPreNormalize($denormalized, $normalized)
    {
        $node = new ArrayNode('foo');

$r = new \ReflectionMethod($node, 'preNormalize');
        $r->setAccessible(true);

$this->assertSame($normalized, $r->invoke($node, $denormalized));
    }

public function getPreNormalizationTests()
    {
        return array(
            array(
                array('foo-bar' => 'foo'),
                array('foo_bar' => 'foo'),
            ),
            array(
                array('foo-bar_moo' => 'foo'),
                array('foo-bar_moo' => 'foo'),
            ),
            array(
                array('foo-bar' => null, 'foo_bar' => 'foo'),
                array('foo-bar' => null, 'foo_bar' => 'foo'),
            )
        );
    }

/**
     * @dataProvider getZeroNamedNodeExamplesData
     */
    public function testNodeNameCanBeZero($denormalized, $normalized)
    {
        $zeroNode = new ArrayNode(0);
        $zeroNode->addChild(new ScalarNode('name'));
        $fiveNode = new ArrayNode(5);
        $fiveNode->addChild(new ScalarNode(0));
        $fiveNode->addChild(new ScalarNode('new_key'));
        $rootNode = new ArrayNode('root');
        $rootNode->addChild($zeroNode);
        $rootNode->addChild($fiveNode);
        $rootNode->addChild(new ScalarNode('string_key'));
        $r = new \ReflectionMethod($rootNode, 'normalizeValue');
        $r->setAccessible(true);

$this->assertSame($normalized, $r->invoke($rootNode, $denormalized));
    }

public function getZeroNamedNodeExamplesData()
    {
        return array(
            array(
                array(
                    0 => array(
                        'name'    => 'something',
                    ),
                    5 => array(
                        0         => 'this won\'t work too',
                        'new_key' => 'some other value',
                    ),
                    'string_key'  => 'just value',
                ),
                array(
                    0 => array (
                        'name' => 'something',
                    ),
                    5 => array (
                        0 => 'this won\'t work too',
                        'new_key' => 'some other value',
                    ),
                    'string_key' => 'just value',
                ),
            ),
        );
    }

/**
     * @dataProvider getPreNormalizedNormalizedOrderedData
     */
    public function testChildrenOrderIsMaintainedOnNormalizeValue($prenormalized, $normalized)
    {
        $scalar1 = new ScalarNode('1');
        $scalar2 = new ScalarNode('2');
        $scalar3 = new ScalarNode('3');
        $node = new ArrayNode('foo');
        $node->addChild($scalar1);
        $node->addChild($scalar3);
        $node->addChild($scalar2);

$r = new \ReflectionMethod($node, 'normalizeValue');
        $r->setAccessible(true);

$this->assertSame($normalized, $r->invoke($node, $prenormalized));
    }

public function getPreNormalizedNormalizedOrderedData()
    {
        return array(
            array(
                array('2' => 'two', '1' => 'one', '3' => 'three'),
                array('2' => 'two', '1' => 'one', '3' => 'three'),
            ),
        );
    }
}