Edit: IntervalTest.php

Editing: IntervalTest.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\Translation\Tests;

use Symfony\Component\Translation\Interval;

class IntervalTest extends \PHPUnit_Framework_TestCase
{
    /**
     * @dataProvider getTests
     */
    public function testTest($expected, $number, $interval)
    {
        $this->assertEquals($expected, Interval::test($number, $interval));
    }

/**
     * @expectedException \InvalidArgumentException
     */
    public function testTestException()
    {
        Interval::test(1, 'foobar');
    }

public function getTests()
    {
        return array(
            array(true, 3, '{1,2, 3 ,4}'),
            array(false, 10, '{1,2, 3 ,4}'),
            array(false, 3, '[1,2]'),
            array(true, 1, '[1,2]'),
            array(true, 2, '[1,2]'),
            array(false, 1, ']1,2['),
            array(false, 2, ']1,2['),
            array(true, log(0), '[-Inf,2['),
            array(true, -log(0), '[-2,+Inf]'),
        );
    }
}