Edit: DateTimeToArrayTransformerTest.php

Editing: DateTimeToArrayTransformerTest.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\Form\Tests\Extension\Core\DataTransformer;

use Symfony\Component\Form\Extension\Core\DataTransformer\DateTimeToArrayTransformer;

class DateTimeToArrayTransformerTest extends DateTimeTestCase
{
    public function testTransform()
    {
        $transformer = new DateTimeToArrayTransformer('UTC', 'UTC');

$input = new \DateTime('2010-02-03 04:05:06 UTC');

$output = array(
            'year' => '2010',
            'month' => '2',
            'day' => '3',
            'hour' => '4',
            'minute' => '5',
            'second' => '6',
        );

$this->assertSame($output, $transformer->transform($input));
    }

public function testTransformEmpty()
    {
        $transformer = new DateTimeToArrayTransformer();

$output = array(
            'year' => '',
            'month' => '',
            'day' => '',
            'hour' => '',
            'minute' => '',
            'second' => '',
        );

$this->assertSame($output, $transformer->transform(null));
    }

public function testTransformEmptyWithFields()
    {
        $transformer = new DateTimeToArrayTransformer(null, null, array('year', 'minute', 'second'));

$output = array(
            'year' => '',
            'minute' => '',
            'second' => '',
        );

$this->assertSame($output, $transformer->transform(null));
    }

public function testTransformWithFields()
    {
        $transformer = new DateTimeToArrayTransformer('UTC', 'UTC', array('year', 'month', 'minute', 'second'));

$input = new \DateTime('2010-02-03 04:05:06 UTC');

$output = array(
            'year' => '2010',
            'month' => '2',
            'minute' => '5',
            'second' => '6',
        );

$this->assertSame($output, $transformer->transform($input));
    }

public function testTransformWithPadding()
    {
        $transformer = new DateTimeToArrayTransformer('UTC', 'UTC', null, true);

$input = new \DateTime('2010-02-03 04:05:06 UTC');

$output = array(
            'year' => '2010',
            'month' => '02',
            'day' => '03',
            'hour' => '04',
            'minute' => '05',
            'second' => '06',
        );

$this->assertSame($output, $transformer->transform($input));
    }

public function testTransformDifferentTimezones()
    {
        $transformer = new DateTimeToArrayTransformer('America/New_York', 'Asia/Hong_Kong');

$input = new \DateTime('2010-02-03 04:05:06 America/New_York');

$dateTime = new \DateTime('2010-02-03 04:05:06 America/New_York');
        $dateTime->setTimezone(new \DateTimeZone('Asia/Hong_Kong'));
        $output = array(
            'year' => (string) (int) $dateTime->format('Y'),
            'month' => (string) (int) $dateTime->format('m'),
            'day' => (string) (int) $dateTime->format('d'),
            'hour' => (string) (int) $dateTime->format('H'),
            'minute' => (string) (int) $dateTime->format('i'),
            'second' => (string) (int) $dateTime->format('s'),
        );

$this->assertSame($output, $transformer->transform($input));
    }

/**
     * @expectedException \Symfony\Component\Form\Exception\TransformationFailedException
     */
    public function testTransformRequiresDateTime()
    {
        $transformer = new DateTimeToArrayTransformer();
        $transformer->reverseTransform('12345');
    }

public function testReverseTransform()
    {
        $transformer = new DateTimeToArrayTransformer('UTC', 'UTC');

$input = array(
            'year' => '2010',
            'month' => '2',
            'day' => '3',
            'hour' => '4',
            'minute' => '5',
            'second' => '6',
        );

$output = new \DateTime('2010-02-03 04:05:06 UTC');

$this->assertDateTimeEquals($output, $transformer->reverseTransform($input));
    }

public function testReverseTransformWithSomeZero()
    {
        $transformer = new DateTimeToArrayTransformer('UTC', 'UTC');

$input = array(
            'year' => '2010',
            'month' => '2',
            'day' => '3',
            'hour' => '4',
            'minute' => '0',
            'second' => '0',
        );

$output = new \DateTime('2010-02-03 04:00:00 UTC');

$this->assertDateTimeEquals($output, $transformer->reverseTransform($input));
    }

public function testReverseTransformCompletelyEmpty()
    {
        $transformer = new DateTimeToArrayTransformer();

$input = array(
            'year' => '',
            'month' => '',
            'day' => '',
            'hour' => '',
            'minute' => '',
            'second' => '',
        );

$this->assertNull($transformer->reverseTransform($input));
    }

public function testReverseTransformCompletelyEmptySubsetOfFields()
    {
        $transformer = new DateTimeToArrayTransformer(null, null, array('year', 'month', 'day'));

$input = array(
            'year' => '',
            'month' => '',
            'day' => '',
        );

$this->assertNull($transformer->reverseTransform($input));
    }

/**
     * @expectedException \Symfony\Component\Form\Exception\TransformationFailedException
     */
    public function testReverseTransformPartiallyEmptyYear()
    {
        $transformer = new DateTimeToArrayTransformer();
        $transformer->reverseTransform(array(
            'month' => '2',
            'day' => '3',
            'hour' => '4',
            'minute' => '5',
            'second' => '6',
        ));
    }

/**
     * @expectedException \Symfony\Component\Form\Exception\TransformationFailedException
     */
    public function testReverseTransformPartiallyEmptyMonth()
    {
        $transformer = new DateTimeToArrayTransformer();
        $transformer->reverseTransform(array(
            'year' => '2010',
            'day' => '3',
            'hour' => '4',
            'minute' => '5',
            'second' => '6',
        ));
    }

/**
     * @expectedException \Symfony\Component\Form\Exception\TransformationFailedException
     */
    public function testReverseTransformPartiallyEmptyDay()
    {
        $transformer = new DateTimeToArrayTransformer();
        $transformer->reverseTransform(array(
            'year' => '2010',
            'month' => '2',
            'hour' => '4',
            'minute' => '5',
            'second' => '6',
        ));
    }

/**
     * @expectedException \Symfony\Component\Form\Exception\TransformationFailedException
     */
    public function testReverseTransformPartiallyEmptyHour()
    {
        $transformer = new DateTimeToArrayTransformer();
        $transformer->reverseTransform(array(
            'year' => '2010',
            'month' => '2',
            'day' => '3',
            'minute' => '5',
            'second' => '6',
        ));
    }

/**
     * @expectedException \Symfony\Component\Form\Exception\TransformationFailedException
     */
    public function testReverseTransformPartiallyEmptyMinute()
    {
        $transformer = new DateTimeToArrayTransformer();
        $transformer->reverseTransform(array(
            'year' => '2010',
            'month' => '2',
            'day' => '3',
            'hour' => '4',
            'second' => '6',
        ));
    }

/**
     * @expectedException \Symfony\Component\Form\Exception\TransformationFailedException
     */
    public function testReverseTransformPartiallyEmptySecond()
    {
        $transformer = new DateTimeToArrayTransformer();
        $transformer->reverseTransform(array(
            'year' => '2010',
            'month' => '2',
            'day' => '3',
            'hour' => '4',
            'minute' => '5',
        ));
    }

public function testReverseTransformNull()
    {
        $transformer = new DateTimeToArrayTransformer();

$this->assertNull($transformer->reverseTransform(null));
    }

public function testReverseTransformDifferentTimezones()
    {
        $transformer = new DateTimeToArrayTransformer('America/New_York', 'Asia/Hong_Kong');

$input = array(
            'year' => '2010',
            'month' => '2',
            'day' => '3',
            'hour' => '4',
            'minute' => '5',
            'second' => '6',
        );

$output = new \DateTime('2010-02-03 04:05:06 Asia/Hong_Kong');
        $output->setTimezone(new \DateTimeZone('America/New_York'));

$this->assertDateTimeEquals($output, $transformer->reverseTransform($input));
    }

public function testReverseTransformToDifferentTimezone()
    {
        $transformer = new DateTimeToArrayTransformer('Asia/Hong_Kong', 'UTC');

$input = array(
            'year' => '2010',
            'month' => '2',
            'day' => '3',
            'hour' => '4',
            'minute' => '5',
            'second' => '6',
        );

$output = new \DateTime('2010-02-03 04:05:06 UTC');
        $output->setTimezone(new \DateTimeZone('Asia/Hong_Kong'));

$this->assertDateTimeEquals($output, $transformer->reverseTransform($input));
    }

/**
     * @expectedException \Symfony\Component\Form\Exception\TransformationFailedException
     */
    public function testReverseTransformRequiresArray()
    {
        $transformer = new DateTimeToArrayTransformer();
        $transformer->reverseTransform('12345');
    }

/**
     * @expectedException \Symfony\Component\Form\Exception\TransformationFailedException
     */
    public function testReverseTransformWithNegativeYear()
    {
        $transformer = new DateTimeToArrayTransformer();
        $transformer->reverseTransform(array(
            'year' => '-1',
            'month' => '2',
            'day' => '3',
            'hour' => '4',
            'minute' => '5',
            'second' => '6',
        ));
    }

/**
     * @expectedException \Symfony\Component\Form\Exception\TransformationFailedException
     */
    public function testReverseTransformWithNegativeMonth()
    {
        $transformer = new DateTimeToArrayTransformer();
        $transformer->reverseTransform(array(
            'year' => '2010',
            'month' => '-1',
            'day' => '3',
            'hour' => '4',
            'minute' => '5',
            'second' => '6',
        ));
    }

/**
     * @expectedException \Symfony\Component\Form\Exception\TransformationFailedException
     */
    public function testReverseTransformWithNegativeDay()
    {
        $transformer = new DateTimeToArrayTransformer();
        $transformer->reverseTransform(array(
            'year' => '2010',
            'month' => '2',
            'day' => '-1',
            'hour' => '4',
            'minute' => '5',
            'second' => '6',
        ));
    }

/**
     * @expectedException \Symfony\Component\Form\Exception\TransformationFailedException
     */
    public function testReverseTransformWithNegativeHour()
    {
        $transformer = new DateTimeToArrayTransformer();
        $transformer->reverseTransform(array(
            'year' => '2010',
            'month' => '2',
            'day' => '3',
            'hour' => '-1',
            'minute' => '5',
            'second' => '6',
        ));
    }

/**
     * @expectedException \Symfony\Component\Form\Exception\TransformationFailedException
     */
    public function testReverseTransformWithNegativeMinute()
    {
        $transformer = new DateTimeToArrayTransformer();
        $transformer->reverseTransform(array(
            'year' => '2010',
            'month' => '2',
            'day' => '3',
            'hour' => '4',
            'minute' => '-1',
            'second' => '6',
        ));
    }

/**
     * @expectedException \Symfony\Component\Form\Exception\TransformationFailedException
     */
    public function testReverseTransformWithNegativeSecond()
    {
        $transformer = new DateTimeToArrayTransformer();
        $transformer->reverseTransform(array(
            'year' => '2010',
            'month' => '2',
            'day' => '3',
            'hour' => '4',
            'minute' => '5',
            'second' => '-1',
        ));
    }

/**
     * @expectedException \Symfony\Component\Form\Exception\TransformationFailedException
     */
    public function testReverseTransformWithInvalidMonth()
    {
        $transformer = new DateTimeToArrayTransformer();
        $transformer->reverseTransform(array(
            'year' => '2010',
            'month' => '13',
            'day' => '3',
            'hour' => '4',
            'minute' => '5',
            'second' => '6',
        ));
    }

/**
     * @expectedException \Symfony\Component\Form\Exception\TransformationFailedException
     */
    public function testReverseTransformWithInvalidDay()
    {
        $transformer = new DateTimeToArrayTransformer();
        $transformer->reverseTransform(array(
            'year' => '2010',
            'month' => '2',
            'day' => '31',
            'hour' => '4',
            'minute' => '5',
            'second' => '6',
        ));
    }

/**
     * @expectedException \Symfony\Component\Form\Exception\TransformationFailedException
     */
    public function testReverseTransformWithStringDay()
    {
        $transformer = new DateTimeToArrayTransformer();
        $transformer->reverseTransform(array(
            'year' => '2010',
            'month' => '2',
            'day' => 'bazinga',
            'hour' => '4',
            'minute' => '5',
            'second' => '6',
        ));
    }

/**
     * @expectedException \Symfony\Component\Form\Exception\TransformationFailedException
     */
    public function testReverseTransformWithStringMonth()
    {
        $transformer = new DateTimeToArrayTransformer();
        $transformer->reverseTransform(array(
            'year' => '2010',
            'month' => 'bazinga',
            'day' => '31',
            'hour' => '4',
            'minute' => '5',
            'second' => '6',
        ));
    }

/**
     * @expectedException \Symfony\Component\Form\Exception\TransformationFailedException
     */
    public function testReverseTransformWithStringYear()
    {
        $transformer = new DateTimeToArrayTransformer();
        $transformer->reverseTransform(array(
            'year' => 'bazinga',
            'month' => '2',
            'day' => '31',
            'hour' => '4',
            'minute' => '5',
            'second' => '6',
        ));
    }

/**
     * @expectedException \Symfony\Component\Form\Exception\TransformationFailedException
     */
    public function testReverseTransformWithEmptyStringHour()
    {
        $transformer = new DateTimeToArrayTransformer();
        $transformer->reverseTransform(array(
            'year' => '2010',
            'month' => '2',
            'day' => '31',
            'hour' => '',
            'minute' => '5',
            'second' => '6',
        ));
    }

/**
     * @expectedException \Symfony\Component\Form\Exception\TransformationFailedException
     */
    public function testReverseTransformWithEmptyStringMinute()
    {
        $transformer = new DateTimeToArrayTransformer();
        $transformer->reverseTransform(array(
            'year' => '2010',
            'month' => '2',
            'day' => '31',
            'hour' => '4',
            'minute' => '',
            'second' => '6',
        ));
    }

/**
     * @expectedException \Symfony\Component\Form\Exception\TransformationFailedException
     */
    public function testReverseTransformWithEmptyStringSecond()
    {
        $transformer = new DateTimeToArrayTransformer();
        $transformer->reverseTransform(array(
            'year' => '2010',
            'month' => '2',
            'day' => '31',
            'hour' => '4',
            'minute' => '5',
            'second' => '',
        ));
    }
}