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vendor/symfony/http-kernel/Tests/DependencyInjection/LazyLoadingFragmentHandlerTest.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\HttpKernel\Tests\DependencyInjection;
+
+use PHPUnit\Framework\TestCase;
+use Symfony\Component\HttpFoundation\Request;
+use Symfony\Component\HttpFoundation\Response;
+use Symfony\Component\HttpKernel\DependencyInjection\LazyLoadingFragmentHandler;
+
+class LazyLoadingFragmentHandlerTest extends TestCase
+{
+    public function testRender()
+    {
+        $renderer = $this->getMockBuilder('Symfony\Component\HttpKernel\Fragment\FragmentRendererInterface')->getMock();
+        $renderer->expects($this->once())->method('getName')->willReturn('foo');
+        $renderer->expects($this->any())->method('render')->willReturn(new Response());
+
+        $requestStack = $this->getMockBuilder('Symfony\Component\HttpFoundation\RequestStack')->getMock();
+        $requestStack->expects($this->any())->method('getCurrentRequest')->willReturn(Request::create('/'));
+
+        $container = $this->getMockBuilder('Psr\Container\ContainerInterface')->getMock();
+        $container->expects($this->once())->method('has')->with('foo')->willReturn(true);
+        $container->expects($this->once())->method('get')->willReturn($renderer);
+
+        $handler = new LazyLoadingFragmentHandler($container, $requestStack, false);
+
+        $handler->render('/foo', 'foo');
+
+        // second call should not lazy-load anymore (see once() above on the get() method)
+        $handler->render('/foo', 'foo');
+    }
+}