public function testReverseTransform()
{
$currency = new Currency();
$currency->setLabel('EUR');
$this->currencyManager->expects($this->once())->method('findOneByLabel')->will($this->returnValue($currency));
$this->assertEquals(null, $this->currencyDataTransformer->reverseTransform(null));
$this->assertEquals('EUR', $this->currencyDataTransformer->reverseTransform('EUR')->getLabel());
}