public function testEmptyContent()
{
$fixer = new Fixer(array('Trademark'));
$this->assertInstanceOf('JoliTypo\\Fixer', $fixer);
$this->assertEquals('', $fixer->fix(''));
$this->assertEquals("\n ", $fixer->fix("\n "));
$this->assertEquals('some content ®', $fixer->fix("\n some content (r)"));
}