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diff --git a/vendor/symfony/dependency-injection/Tests/Config/AutowireServiceResourceTest.php b/vendor/symfony/dependency-injection/Tests/Config/AutowireServiceResourceTest.php
new file mode 100644
index 000000000..0b3c0f84c
--- /dev/null
+++ b/vendor/symfony/dependency-injection/Tests/Config/AutowireServiceResourceTest.php
@@ -0,0 +1,121 @@
+<?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\DependencyInjection\Tests\Config;
+
+use PHPUnit\Framework\TestCase;
+use Symfony\Component\DependencyInjection\Compiler\AutowirePass;
+use Symfony\Component\DependencyInjection\Config\AutowireServiceResource;
+
+class AutowireServiceResourceTest extends TestCase
+{
+    /**
+     * @var AutowireServiceResource
+     */
+    private $resource;
+    private $file;
+    private $class;
+    private $time;
+
+    protected function setUp()
+    {
+        $this->file = realpath(sys_get_temp_dir()).'/tmp.php';
+        $this->time = time();
+        touch($this->file, $this->time);
+
+        $this->class = __NAMESPACE__.'\Foo';
+        $this->resource = new AutowireServiceResource(
+            $this->class,
+            $this->file,
+            array()
+        );
+    }
+
+    public function testToString()
+    {
+        $this->assertSame('service.autowire.'.$this->class, (string) $this->resource);
+    }
+
+    public function testSerializeUnserialize()
+    {
+        $unserialized = unserialize(serialize($this->resource));
+
+        $this->assertEquals($this->resource, $unserialized);
+    }
+
+    public function testIsFresh()
+    {
+        $this->assertTrue($this->resource->isFresh($this->time), '->isFresh() returns true if the resource has not changed in same second');
+        $this->assertTrue($this->resource->isFresh($this->time + 10), '->isFresh() returns true if the resource has not changed');
+        $this->assertFalse($this->resource->isFresh($this->time - 86400), '->isFresh() returns false if the resource has been updated');
+    }
+
+    public function testIsFreshForDeletedResources()
+    {
+        unlink($this->file);
+
+        $this->assertFalse($this->resource->isFresh($this->getStaleFileTime()), '->isFresh() returns false if the resource does not exist');
+    }
+
+    public function testIsNotFreshChangedResource()
+    {
+        $oldResource = new AutowireServiceResource(
+            $this->class,
+            $this->file,
+            array('will_be_different')
+        );
+
+        // test with a stale file *and* a resource that *will* be different than the actual
+        $this->assertFalse($oldResource->isFresh($this->getStaleFileTime()), '->isFresh() returns false if the constructor arguments have changed');
+    }
+
+    public function testIsFreshSameConstructorArgs()
+    {
+        $oldResource = AutowirePass::createResourceForClass(
+            new \ReflectionClass(__NAMESPACE__.'\Foo')
+        );
+
+        // test with a stale file *but* the resource will not be changed
+        $this->assertTrue($oldResource->isFresh($this->getStaleFileTime()), '->isFresh() returns false if the constructor arguments have changed');
+    }
+
+    public function testNotFreshIfClassNotFound()
+    {
+        $resource = new AutowireServiceResource(
+            'Some\Non\Existent\Class',
+            $this->file,
+            array()
+        );
+
+        $this->assertFalse($resource->isFresh($this->getStaleFileTime()), '->isFresh() returns false if the class no longer exists');
+    }
+
+    protected function tearDown()
+    {
+        if (!file_exists($this->file)) {
+            return;
+        }
+
+        unlink($this->file);
+    }
+
+    private function getStaleFileTime()
+    {
+        return $this->time - 10;
+    }
+}
+
+class Foo
+{
+    public function __construct($foo)
+    {
+    }
+}