public function testSetDataHelper()
{
$storeId = 'store-id';
$expectedResult = 'relay-url';
$helperDataMock = $this->getMockBuilder('Magento\\Authorizenet\\Helper\\Backend\\Data')->disableOriginalConstructor()->getMock();
$helperDataMock->expects($this->once())->method('getRelayUrl')->with($storeId)->willReturn($expectedResult);
$this->directpost->setDataHelper($helperDataMock);
$this->assertEquals($expectedResult, $this->directpost->getRelayUrl($storeId));
}
