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[Templating] Added tests for the DelegatingEngine.
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‎src/Symfony/Component/Templating/Tests/DelegatingEngineTest.php

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<?php
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/*
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* This file is part of the Symfony package.
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*
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* (c) Fabien Potencier <[email protected]>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Symfony\Component\Templating\Tests;
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use Symfony\Component\Templating\DelegatingEngine;
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use Symfony\Component\Templating\StreamingEngineInterface;
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use Symfony\Component\Templating\EngineInterface;
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class DelegatingEngineTest extends \PHPUnit_Framework_TestCase
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{
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public function testRenderDelegatesToSupportedEngine()
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{
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$firstEngine = $this->getEngineMock('template.php', false);
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$secondEngine = $this->getEngineMock('template.php', true);
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$secondEngine->expects($this->once())
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->method('render')
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->with('template.php', array('foo' => 'bar'))
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->will($this->returnValue('<html />'));
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$delegatingEngine = new DelegatingEngine(array($firstEngine, $secondEngine));
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$result = $delegatingEngine->render('template.php', array('foo' => 'bar'));
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$this->assertSame('<html />', $result);
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}
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/**
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* @expectedException \RuntimeException
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* @expectedExceptionMessage No engine is able to work with the template "template.php"
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*/
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public function testRenderWithNoSupportedEngine()
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{
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$firstEngine = $this->getEngineMock('template.php', false);
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$secondEngine = $this->getEngineMock('template.php', false);
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$delegatingEngine = new DelegatingEngine(array($firstEngine, $secondEngine));
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$delegatingEngine->render('template.php', array('foo' => 'bar'));
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}
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public function testStreamDelegatesToSupportedEngine()
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{
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$streamingEngine = $this->getStreamingEngineMock('template.php', true);
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$streamingEngine->expects($this->once())
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->method('stream')
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->with('template.php', array('foo' => 'bar'))
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->will($this->returnValue('<html />'));
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$delegatingEngine = new DelegatingEngine(array($streamingEngine));
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$result = $delegatingEngine->stream('template.php', array('foo' => 'bar'));
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$this->assertNull($result);
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}
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/**
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* @expectedException \LogicException
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* @expectedExceptionMessage Template "template.php" cannot be streamed as the engine supporting it does not implement StreamingEngineInterface
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*/
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public function testStreamRequiresStreamingEngine()
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{
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$engine = $this->getEngineMock('template.php', true);
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$engine->expects($this->never())->method('stream');
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$delegatingEngine = new DelegatingEngine(array($engine));
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$delegatingEngine->stream('template.php', array('foo' => 'bar'));
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}
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public function testExists()
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{
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$engine = $this->getEngineMock('template.php', true);
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$engine->expects($this->once())
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->method('exists')
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->with('template.php')
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->will($this->returnValue(true));
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$delegatingEngine = new DelegatingEngine(array($engine));
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$this->assertTrue($delegatingEngine->exists('template.php'));
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}
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public function testSupports()
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{
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$engine = $this->getEngineMock('template.php', true);
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$delegatingEngine = new DelegatingEngine(array($engine));
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$this->assertTrue($delegatingEngine->supports('template.php'));
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}
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public function testSupportsWithNoSupportedEngine()
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{
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$engine = $this->getEngineMock('template.php', false);
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$delegatingEngine = new DelegatingEngine(array($engine));
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$this->assertFalse($delegatingEngine->supports('template.php'));
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}
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private function getEngineMock($template, $supports)
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{
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$engine = $this->getMock('Symfony\Component\Templating\EngineInterface');
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$engine->expects($this->once())
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->method('supports')
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->with($template)
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->will($this->returnValue($supports));
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return $engine;
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}
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private function getStreamingEngineMock($template, $supports)
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{
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$engine = $this->getMockForAbstractClass('Symfony\Component\Templating\Tests\MyStreamingEngine');
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$engine->expects($this->once())
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->method('supports')
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->with($template)
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->will($this->returnValue($supports));
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return $engine;
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}
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}
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interface MyStreamingEngine extends StreamingEngineInterface, EngineInterface
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{
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}

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