Added CacheInterface test

Author: YspMark

tests/Type/Symfony/ExtensionTest.php

@@ -20,6 +20,11 @@ public function dataFileAsserts(): iterable
 		}
 
 		yield from $this->gatherAssertTypes(__DIR__ . '/data/tree_builder.php');
+
+		if (interface_exists('\Symfony\Contracts\Cache\CacheInterface')) {
+			yield from $this->gatherAssertTypes(__DIR__ . '/data/ExampleCacheInterface.php');
+		}
+
 		yield from $this->gatherAssertTypes(__DIR__ . '/data/ExampleBaseCommand.php');
 		yield from $this->gatherAssertTypes(__DIR__ . '/data/ExampleOptionCommand.php');
 		yield from $this->gatherAssertTypes(__DIR__ . '/data/ExampleOptionLazyCommand.php');

tests/Type/Symfony/data/ExampleCacheInterface.php

@@ -0,0 +1,17 @@
+<?php declare(strict_types=1);
+
+namespace PHPStan\Type\Symfony;
+
+use Bar;
+use stdClass;
+use Symfony\Contracts\Cache\CacheInterface;
+use function PHPStan\Testing\assertType;
+
+/** @var CacheInterface $cacheInterface */
+$cacheInterface = new stdClass();
+
+$callbackCallable = static function (Bar $bar) {
+	return $bar;
+};
+
+assertType('Bar', $cacheInterface->get('cacheTest', $callbackCallable));