public function testConvertMissingFile()
{
$file = $this->getMockBuilder(\BrowscapPHP\Helper\Filesystem::class)->disableOriginalConstructor()->setMethods(['exists'])->getMock();
$file->expects(self::once())->method('exists')->will(self::returnValue(false));
$this->object->setFilesystem($file);
$this->object->convertFile('testFile');
}