private function getTemplateExtension(FilesystemLoader $loader, $name)
 {
     if ($loader->exists($name . '.handlebars')) {
         return '.handlebars';
     }
     if ($loader->exists($name . '.hbs')) {
         return '.hbs';
     }
     return false;
 }
 public function testExistsException()
 {
     $parser = $this->prophesize('Symfony\\Component\\Templating\\TemplateNameParserInterface');
     $parser->parse('main')->shouldNotBeCalled();
     $locator = $this->prophesize('Symfony\\Component\\Config\\FileLocatorInterface');
     $locator->locate('main')->shouldNotBeCalled();
     $loader = new FilesystemLoader($locator->reveal(), $parser->reveal());
     $loader->addPath(__DIR__ . '/../Fixtures/Resources/views');
     $this->assertFalse($loader->exists('@test:main'));
 }