public function testRenameClasses()
{
$this->assertEquals(['class' => ''], $this->object->renameClasses(['a' => 'b'], []));
$this->assertEquals(['class' => 'b'], $this->object->renameClasses(['a' => 'b'], ['class' => 'a']));
$this->assertEquals(['class' => 'b'], $this->object->renameClasses(['a' => 'b', 'c' => 'd'], ['class' => 'a']));
}