/**
* @dataProvider mockProvider
* @param Invoice $obj
*/
public function testQrCode($obj, $mockApiContext)
{
$mockPayPalRestCall = $this->getMockBuilder('\\PayPal\\Transport\\PayPalRestCall')->disableOriginalConstructor()->getMock();
$mockPayPalRestCall->expects($this->any())->method('execute')->will($this->returnValue(ImageTest::getJson()));
$result = $obj->qrCode("invoiceId", array(), $mockApiContext, $mockPayPalRestCall);
$this->assertNotNull($result);
}