symfony/tests/Symfony/Tests/Components/DependencyInjection/ParameterBag/ParameterBagTest.php

<?php

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

namespace Symfony\Tests\Components\DependencyInjection\ParameterBag;

use Symfony\Components\DependencyInjection\ParameterBag\ParameterBag;

class ParameterBagTest extends \PHPUnit_Framework_TestCase
{
    /**
     * @covers Symfony\Components\DependencyInjection\ParameterBag\ParameterBag::__construct
     */
    public function testConstructor()
    {
        $bag = new ParameterBag($parameters = array(
            'foo' => 'foo',
            'bar' => 'bar',
        ));
        $this->assertEquals($parameters, $bag->all(), '__construct() takes an array of parameters as its first argument');
    }

    /**
     * @covers Symfony\Components\DependencyInjection\ParameterBag\ParameterBag::clear
     */
    public function testClear()
    {
        $bag = new ParameterBag($parameters = array(
            'foo' => 'foo',
            'bar' => 'bar',
        ));
        $bag->clear();
        $this->assertEquals(array(), $bag->all(), '->clear() removes all parameters');
    }

    /**
     * @covers Symfony\Components\DependencyInjection\ParameterBag\ParameterBag::get
     * @covers Symfony\Components\DependencyInjection\ParameterBag\ParameterBag::set
     */
    public function testGetSet()
    {
        $bag = new ParameterBag(array('foo' => 'bar'));
        $bag->set('bar', 'foo');
        $this->assertEquals('foo', $bag->get('bar'), '->set() sets the value of a new parameter');

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

        $bag->set('Foo', 'baz1');
        $this->assertEquals('baz1', $bag->get('foo'), '->set() converts the key to lowercase');
        $this->assertEquals('baz1', $bag->get('FOO'), '->get() converts the key to lowercase');

        try {
            $bag->get('baba');
            $this->fail('->get() throws an \InvalidArgumentException if the key does not exist');
        } catch (\Exception $e) {
            $this->assertInstanceOf('\InvalidArgumentException', $e, '->get() throws an \InvalidArgumentException if the key does not exist');
            $this->assertEquals('The parameter "baba" must be defined.', $e->getMessage(), '->get() throws an \InvalidArgumentException if the key does not exist');
        }
    }

    /**
     * @covers Symfony\Components\DependencyInjection\ParameterBag\ParameterBag::has
     */
    public function testHas()
    {
        $bag = new ParameterBag(array('foo' => 'bar'));
        $this->assertTrue($bag->has('foo'), '->has() returns true if a parameter is defined');
        $this->assertTrue($bag->has('Foo'), '->has() converts the key to lowercase');
        $this->assertFalse($bag->has('bar'), '->has() returns false if a parameter is not defined');
    }
}