public function testCustomBrandWorks()
{
$this->card->addSupportedBrand('omniexpress', '/^9\\d{12}(\\d{3})?$/');
$this->assertArrayHasKey('omniexpress', $this->card->getSupportedBrands());
$this->card->setNumber('9111111111111110');
$this->card->validate();
$this->assertEquals('omniexpress', $this->card->getBrand());
}