YamlLintCommand example

        $this->expectException(\RuntimeException::class);
        $tester = $this->createCommandTester();
        $filename = $this->createFile('');
        unlink($filename);

        $tester->execute(['filename' => $filename], ['decorated' => false]);
    }

    public function testGetHelp()
    {
        $command = new YamlLintCommand();
        $expected = <<<EOF Or find all files in a bundle: <info>php %command.full_name% @AcmeDemoBundle</info> EOF;

        $this->assertStringContainsString($expected, $command->getHelp());
    }

    public function testLintFilesFromBundleDirectory()
    {