Edit: ParameterBagTest.php

Editing: ParameterBagTest.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\HttpFoundation\Tests;

use Symfony\Component\HttpFoundation\ParameterBag;

class ParameterBagTest extends \PHPUnit_Framework_TestCase
{
    /**
     * @covers Symfony\Component\HttpFoundation\ParameterBag::__construct
     */
    public function testConstructor()
    {
        $this->testAll();
    }

/**
     * @covers Symfony\Component\HttpFoundation\ParameterBag::all
     */
    public function testAll()
    {
        $bag = new ParameterBag(array('foo' => 'bar'));
        $this->assertEquals(array('foo' => 'bar'), $bag->all(), '->all() gets all the input');
    }

public function testKeys()
    {
        $bag = new ParameterBag(array('foo' => 'bar'));
        $this->assertEquals(array('foo'), $bag->keys());
    }

public function testAdd()
    {
        $bag = new ParameterBag(array('foo' => 'bar'));
        $bag->add(array('bar' => 'bas'));
        $this->assertEquals(array('foo' => 'bar', 'bar' => 'bas'), $bag->all());
    }

public function testRemove()
    {
        $bag = new ParameterBag(array('foo' => 'bar'));
        $bag->add(array('bar' => 'bas'));
        $this->assertEquals(array('foo' => 'bar', 'bar' => 'bas'), $bag->all());
        $bag->remove('bar');
        $this->assertEquals(array('foo' => 'bar'), $bag->all());
    }

/**
     * @covers Symfony\Component\HttpFoundation\ParameterBag::replace
     */
    public function testReplace()
    {
        $bag = new ParameterBag(array('foo' => 'bar'));

$bag->replace(array('FOO' => 'BAR'));
        $this->assertEquals(array('FOO' => 'BAR'), $bag->all(), '->replace() replaces the input with the argument');
        $this->assertFalse($bag->has('foo'), '->replace() overrides previously set the input');
    }

/**
     * @covers Symfony\Component\HttpFoundation\ParameterBag::get
     */
    public function testGet()
    {
        $bag = new ParameterBag(array('foo' => 'bar', 'null' => null));

$this->assertEquals('bar', $bag->get('foo'), '->get() gets the value of a parameter');
        $this->assertEquals('default', $bag->get('unknown', 'default'), '->get() returns second argument as default if a parameter is not defined');
        $this->assertNull($bag->get('null', 'default'), '->get() returns null if null is set');
    }

public function testGetDoesNotUseDeepByDefault()
    {
        $bag = new ParameterBag(array('foo' => array('bar' => 'moo')));

$this->assertNull($bag->get('foo[bar]'));
    }

/**
     * @dataProvider getInvalidPaths
     * @expectedException \InvalidArgumentException
     */
    public function testGetDeepWithInvalidPaths($path)
    {
        $bag = new ParameterBag(array('foo' => array('bar' => 'moo')));

$bag->get($path, null, true);
    }

public function getInvalidPaths()
    {
        return array(
            array('foo[['),
            array('foo[d'),
            array('foo[bar]]'),
            array('foo[bar]d'),
        );
    }

public function testGetDeep()
    {
        $bag = new ParameterBag(array('foo' => array('bar' => array('moo' => 'boo'))));

$this->assertEquals(array('moo' => 'boo'), $bag->get('foo[bar]', null, true));
        $this->assertEquals('boo', $bag->get('foo[bar][moo]', null, true));
        $this->assertEquals('default', $bag->get('foo[bar][foo]', 'default', true));
        $this->assertEquals('default', $bag->get('bar[moo][foo]', 'default', true));
    }

/**
     * @covers Symfony\Component\HttpFoundation\ParameterBag::set
     */
    public function testSet()
    {
        $bag = new ParameterBag(array());

$bag->set('foo', 'bar');
        $this->assertEquals('bar', $bag->get('foo'), '->set() sets the value of parameter');

$bag->set('foo', 'baz');
        $this->assertEquals('baz', $bag->get('foo'), '->set() overrides previously set parameter');
    }

/**
     * @covers Symfony\Component\HttpFoundation\ParameterBag::has
     */
    public function testHas()
    {
        $bag = new ParameterBag(array('foo' => 'bar'));

$this->assertTrue($bag->has('foo'), '->has() returns true if a parameter is defined');
        $this->assertFalse($bag->has('unknown'), '->has() return false if a parameter is not defined');
    }

/**
     * @covers Symfony\Component\HttpFoundation\ParameterBag::getAlpha
     */
    public function testGetAlpha()
    {
        $bag = new ParameterBag(array('word' => 'foo_BAR_012'));

$this->assertEquals('fooBAR', $bag->getAlpha('word'), '->getAlpha() gets only alphabetic characters');
        $this->assertEquals('', $bag->getAlpha('unknown'), '->getAlpha() returns empty string if a parameter is not defined');
    }

/**
     * @covers Symfony\Component\HttpFoundation\ParameterBag::getAlnum
     */
    public function testGetAlnum()
    {
        $bag = new ParameterBag(array('word' => 'foo_BAR_012'));

$this->assertEquals('fooBAR012', $bag->getAlnum('word'), '->getAlnum() gets only alphanumeric characters');
        $this->assertEquals('', $bag->getAlnum('unknown'), '->getAlnum() returns empty string if a parameter is not defined');
    }

/**
     * @covers Symfony\Component\HttpFoundation\ParameterBag::getDigits
     */
    public function testGetDigits()
    {
        $bag = new ParameterBag(array('word' => 'foo_BAR_012'));

$this->assertEquals('012', $bag->getDigits('word'), '->getDigits() gets only digits as string');
        $this->assertEquals('', $bag->getDigits('unknown'), '->getDigits() returns empty string if a parameter is not defined');
    }

/**
     * @covers Symfony\Component\HttpFoundation\ParameterBag::getInt
     */
    public function testGetInt()
    {
        $bag = new ParameterBag(array('digits' => '0123'));

$this->assertEquals(123, $bag->getInt('digits'), '->getInt() gets a value of parameter as integer');
        $this->assertEquals(0, $bag->getInt('unknown'), '->getInt() returns zero if a parameter is not defined');
    }

/**
     * @covers Symfony\Component\HttpFoundation\ParameterBag::filter
     */
    public function testFilter()
    {
        $bag = new ParameterBag(array(
            'digits' => '0123ab',
            'email' => 'example@example.com',
            'url' => 'http://example.com/foo',
            'dec' => '256',
            'hex' => '0x100',
            'array' => array('bang'),
            ));

$this->assertEmpty($bag->filter('nokey'), '->filter() should return empty by default if no key is found');

$this->assertEquals('0123', $bag->filter('digits', '', false, FILTER_SANITIZE_NUMBER_INT), '->filter() gets a value of parameter as integer filtering out invalid characters');

$this->assertEquals('example@example.com', $bag->filter('email', '', false, FILTER_VALIDATE_EMAIL), '->filter() gets a value of parameter as email');

$this->assertEquals('http://example.com/foo', $bag->filter('url', '', false, FILTER_VALIDATE_URL, array('flags' => FILTER_FLAG_PATH_REQUIRED)), '->filter() gets a value of parameter as URL with a path');

// This test is repeated for code-coverage
        $this->assertEquals('http://example.com/foo', $bag->filter('url', '', false, FILTER_VALIDATE_URL, FILTER_FLAG_PATH_REQUIRED), '->filter() gets a value of parameter as URL with a path');

$this->assertFalse($bag->filter('dec', '', false, FILTER_VALIDATE_INT, array(
            'flags'   => FILTER_FLAG_ALLOW_HEX,
            'options' => array('min_range' => 1, 'max_range' => 0xff))
                ), '->filter() gets a value of parameter as integer between boundaries');

$this->assertFalse($bag->filter('hex', '', false, FILTER_VALIDATE_INT, array(
            'flags'   => FILTER_FLAG_ALLOW_HEX,
            'options' => array('min_range' => 1, 'max_range' => 0xff))
                ), '->filter() gets a value of parameter as integer between boundaries');

$this->assertEquals(array('bang'), $bag->filter('array', '', false), '->filter() gets a value of parameter as an array');

}

/**
     * @covers Symfony\Component\HttpFoundation\ParameterBag::getIterator
     */
    public function testGetIterator()
    {
        $parameters = array('foo' => 'bar', 'hello' => 'world');
        $bag = new ParameterBag($parameters);

$i = 0;
        foreach ($bag as $key => $val) {
            $i++;
            $this->assertEquals($parameters[$key], $val);
        }

$this->assertEquals(count($parameters), $i);
    }

/**
     * @covers Symfony\Component\HttpFoundation\ParameterBag::count
     */
    public function testCount()
    {
        $parameters = array('foo' => 'bar', 'hello' => 'world');
        $bag = new ParameterBag($parameters);

$this->assertEquals(count($parameters), count($bag));
    }
}