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diff --git a/vendor/symfony/class-loader/Tests/ApcClassLoaderTest.php b/vendor/symfony/class-loader/Tests/ApcClassLoaderTest.php
new file mode 100644
index 000000000..8ad7132ee
--- /dev/null
+++ b/vendor/symfony/class-loader/Tests/ApcClassLoaderTest.php
@@ -0,0 +1,197 @@
+<?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\ClassLoader\Tests;
+
+use PHPUnit\Framework\TestCase;
+use Symfony\Component\ClassLoader\ApcClassLoader;
+use Symfony\Component\ClassLoader\ClassLoader;
+
+class ApcClassLoaderTest extends TestCase
+{
+    protected function setUp()
+    {
+        if (!(ini_get('apc.enabled') && ini_get('apc.enable_cli'))) {
+            $this->markTestSkipped('The apc extension is not enabled.');
+        } else {
+            apcu_clear_cache();
+        }
+    }
+
+    protected function tearDown()
+    {
+        if (ini_get('apc.enabled') && ini_get('apc.enable_cli')) {
+            apcu_clear_cache();
+        }
+    }
+
+    public function testConstructor()
+    {
+        $loader = new ClassLoader();
+        $loader->addPrefix('Apc\Namespaced', __DIR__.DIRECTORY_SEPARATOR.'Fixtures');
+
+        $loader = new ApcClassLoader('test.prefix.', $loader);
+
+        $this->assertEquals($loader->findFile('\Apc\Namespaced\FooBar'), apcu_fetch('test.prefix.\Apc\Namespaced\FooBar'), '__construct() takes a prefix as its first argument');
+    }
+
+    /**
+     * @dataProvider getLoadClassTests
+     */
+    public function testLoadClass($className, $testClassName, $message)
+    {
+        $loader = new ClassLoader();
+        $loader->addPrefix('Apc\Namespaced', __DIR__.DIRECTORY_SEPARATOR.'Fixtures');
+        $loader->addPrefix('Apc_Pearlike_', __DIR__.DIRECTORY_SEPARATOR.'Fixtures');
+
+        $loader = new ApcClassLoader('test.prefix.', $loader);
+        $loader->loadClass($testClassName);
+        $this->assertTrue(class_exists($className), $message);
+    }
+
+    public function getLoadClassTests()
+    {
+        return array(
+           array('\\Apc\\Namespaced\\Foo', 'Apc\\Namespaced\\Foo',   '->loadClass() loads Apc\Namespaced\Foo class'),
+           array('Apc_Pearlike_Foo',    'Apc_Pearlike_Foo',      '->loadClass() loads Apc_Pearlike_Foo class'),
+        );
+    }
+
+    /**
+     * @dataProvider getLoadClassFromFallbackTests
+     */
+    public function testLoadClassFromFallback($className, $testClassName, $message)
+    {
+        $loader = new ClassLoader();
+        $loader->addPrefix('Apc\Namespaced', __DIR__.DIRECTORY_SEPARATOR.'Fixtures');
+        $loader->addPrefix('Apc_Pearlike_', __DIR__.DIRECTORY_SEPARATOR.'Fixtures');
+        $loader->addPrefix('', array(__DIR__.DIRECTORY_SEPARATOR.'Fixtures/Apc/fallback'));
+
+        $loader = new ApcClassLoader('test.prefix.fallback', $loader);
+        $loader->loadClass($testClassName);
+
+        $this->assertTrue(class_exists($className), $message);
+    }
+
+    public function getLoadClassFromFallbackTests()
+    {
+        return array(
+           array('\\Apc\\Namespaced\\Baz',    'Apc\\Namespaced\\Baz',    '->loadClass() loads Apc\Namespaced\Baz class'),
+           array('Apc_Pearlike_Baz',       'Apc_Pearlike_Baz',       '->loadClass() loads Apc_Pearlike_Baz class'),
+           array('\\Apc\\Namespaced\\FooBar', 'Apc\\Namespaced\\FooBar', '->loadClass() loads Apc\Namespaced\Baz class from fallback dir'),
+           array('Apc_Pearlike_FooBar',    'Apc_Pearlike_FooBar',    '->loadClass() loads Apc_Pearlike_Baz class from fallback dir'),
+       );
+    }
+
+    /**
+     * @dataProvider getLoadClassNamespaceCollisionTests
+     */
+    public function testLoadClassNamespaceCollision($namespaces, $className, $message)
+    {
+        $loader = new ClassLoader();
+        $loader->addPrefixes($namespaces);
+
+        $loader = new ApcClassLoader('test.prefix.collision.', $loader);
+        $loader->loadClass($className);
+
+        $this->assertTrue(class_exists($className), $message);
+    }
+
+    public function getLoadClassNamespaceCollisionTests()
+    {
+        return array(
+           array(
+               array(
+                   'Apc\\NamespaceCollision\\A' => __DIR__.DIRECTORY_SEPARATOR.'Fixtures/Apc/alpha',
+                   'Apc\\NamespaceCollision\\A\\B' => __DIR__.DIRECTORY_SEPARATOR.'Fixtures/Apc/beta',
+               ),
+               'Apc\NamespaceCollision\A\Foo',
+               '->loadClass() loads NamespaceCollision\A\Foo from alpha.',
+           ),
+           array(
+               array(
+                   'Apc\\NamespaceCollision\\A\\B' => __DIR__.DIRECTORY_SEPARATOR.'Fixtures/Apc/beta',
+                   'Apc\\NamespaceCollision\\A' => __DIR__.DIRECTORY_SEPARATOR.'Fixtures/Apc/alpha',
+               ),
+               'Apc\NamespaceCollision\A\Bar',
+               '->loadClass() loads NamespaceCollision\A\Bar from alpha.',
+           ),
+           array(
+               array(
+                   'Apc\\NamespaceCollision\\A' => __DIR__.DIRECTORY_SEPARATOR.'Fixtures/Apc/alpha',
+                   'Apc\\NamespaceCollision\\A\\B' => __DIR__.DIRECTORY_SEPARATOR.'Fixtures/Apc/beta',
+               ),
+               'Apc\NamespaceCollision\A\B\Foo',
+               '->loadClass() loads NamespaceCollision\A\B\Foo from beta.',
+           ),
+           array(
+               array(
+                   'Apc\\NamespaceCollision\\A\\B' => __DIR__.DIRECTORY_SEPARATOR.'Fixtures/Apc/beta',
+                   'Apc\\NamespaceCollision\\A' => __DIR__.DIRECTORY_SEPARATOR.'Fixtures/Apc/alpha',
+               ),
+               'Apc\NamespaceCollision\A\B\Bar',
+               '->loadClass() loads NamespaceCollision\A\B\Bar from beta.',
+           ),
+        );
+    }
+
+    /**
+     * @dataProvider getLoadClassPrefixCollisionTests
+     */
+    public function testLoadClassPrefixCollision($prefixes, $className, $message)
+    {
+        $loader = new ClassLoader();
+        $loader->addPrefixes($prefixes);
+
+        $loader = new ApcClassLoader('test.prefix.collision.', $loader);
+        $loader->loadClass($className);
+
+        $this->assertTrue(class_exists($className), $message);
+    }
+
+    public function getLoadClassPrefixCollisionTests()
+    {
+        return array(
+           array(
+               array(
+                   'ApcPrefixCollision_A_' => __DIR__.DIRECTORY_SEPARATOR.'Fixtures/Apc/alpha/Apc',
+                   'ApcPrefixCollision_A_B_' => __DIR__.DIRECTORY_SEPARATOR.'Fixtures/Apc/beta/Apc',
+               ),
+               'ApcPrefixCollision_A_Foo',
+               '->loadClass() loads ApcPrefixCollision_A_Foo from alpha.',
+           ),
+           array(
+               array(
+                   'ApcPrefixCollision_A_B_' => __DIR__.DIRECTORY_SEPARATOR.'Fixtures/Apc/beta/Apc',
+                   'ApcPrefixCollision_A_' => __DIR__.DIRECTORY_SEPARATOR.'Fixtures/Apc/alpha/Apc',
+               ),
+               'ApcPrefixCollision_A_Bar',
+               '->loadClass() loads ApcPrefixCollision_A_Bar from alpha.',
+           ),
+           array(
+               array(
+                   'ApcPrefixCollision_A_' => __DIR__.DIRECTORY_SEPARATOR.'Fixtures/Apc/alpha/Apc',
+                   'ApcPrefixCollision_A_B_' => __DIR__.DIRECTORY_SEPARATOR.'Fixtures/Apc/beta/Apc',
+               ),
+               'ApcPrefixCollision_A_B_Foo',
+               '->loadClass() loads ApcPrefixCollision_A_B_Foo from beta.',
+           ),
+           array(
+               array(
+                   'ApcPrefixCollision_A_B_' => __DIR__.DIRECTORY_SEPARATOR.'Fixtures/Apc/beta/Apc',
+                   'ApcPrefixCollision_A_' => __DIR__.DIRECTORY_SEPARATOR.'Fixtures/Apc/alpha/Apc',
+               ),
+               'ApcPrefixCollision_A_B_Bar',
+               '->loadClass() loads ApcPrefixCollision_A_B_Bar from beta.',
+           ),
+        );
+    }
+}