symfony/tests/Symfony/Tests/Component/Templating/Helper/SlotsHelperTest.php

<?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\Tests\Component\Templating\Helper;

use Symfony\Component\Templating\Helper\SlotsHelper;

class SlotsHelperTest extends \PHPUnit_Framework_TestCase
{
    public function testHasGetSet()
    {
        $helper = new SlotsHelper();
        $helper->set('foo', 'bar');
        $this->assertEquals('bar', $helper->get('foo'), '->set() sets a slot value');
        $this->assertEquals('bar', $helper->get('bar', 'bar'), '->get() takes a default value to return if the slot does not exist');

        $this->assertTrue($helper->has('foo'), '->has() returns true if the slot exists');
        $this->assertFalse($helper->has('bar'), '->has() returns false if the slot does not exist');
    }

    public function testOutput()
    {
        $helper = new SlotsHelper();
        $helper->set('foo', 'bar');
        ob_start();
        $ret = $helper->output('foo');
        $output = ob_get_clean();
        $this->assertEquals('bar', $output, '->output() outputs the content of a slot');
        $this->assertTrue($ret, '->output() returns true if the slot exists');

        ob_start();
        $ret = $helper->output('bar', 'bar');
        $output = ob_get_clean();
        $this->assertEquals('bar', $output, '->output() takes a default value to return if the slot does not exist');
        $this->assertTrue($ret, '->output() returns true if the slot does not exist but a default value is provided');

        ob_start();
        $ret = $helper->output('bar');
        $output = ob_get_clean();
        $this->assertEquals('', $output, '->output() outputs nothing if the slot does not exist');
        $this->assertFalse($ret, '->output() returns false if the slot does not exist');
    }

    public function testStartStop()
    {
        $helper = new SlotsHelper();
        $helper->start('bar');
        echo 'foo';
        $helper->stop();
        $this->assertEquals('foo', $helper->get('bar'), '->start() starts a slot');
        $this->assertTrue($helper->has('bar'), '->starts() starts a slot');

        $helper->start('bar');
        try {
            $helper->start('bar');
            $helper->stop();
            $this->fail('->start() throws an InvalidArgumentException if a slot with the same name is already started');
        } catch (\Exception $e) {
            $helper->stop();
            $this->assertInstanceOf('\InvalidArgumentException', $e, '->start() throws an InvalidArgumentException if a slot with the same name is already started');
            $this->assertEquals('A slot named "bar" is already started.', $e->getMessage(), '->start() throws an InvalidArgumentException if a slot with the same name is already started');
        }

        try {
            $helper->stop();
            $this->fail('->stop() throws an LogicException if no slot is started');
        } catch (\Exception $e) {
            $this->assertInstanceOf('\LogicException', $e, '->stop() throws an LogicException if no slot is started');
            $this->assertEquals('No slot started.', $e->getMessage(), '->stop() throws an LogicException if no slot is started');
        }
    }
}