Make sure we can also run with escapedshell args

Signed-off-by: Roeland Jago Douma <roeland@famdouma.nl>

tests/lib/LargeFileHelperGetFileSizeTest.php

@@ -60,6 +60,9 @@ class LargeFileHelperGetFileSizeTest extends TestCase {
 	 * @dataProvider dataFileNameProvider
 	 */
 	public function testGetFileSizeViaExec($filename, $fileSize) {
+		if (escapeshellarg('strängé') !== '\'strängé\'') {
+			$this->markTestSkipped('Your escapeshell args removes accents');
+		}
 		if (!\OC_Helper::is_function_enabled('exec')) {
 			$this->markTestSkipped(
 				'The exec() function needs to be enabled for this test.'