getMockForAbstractClass( \Magento\Framework\UrlInterface::class, ['getUrl'], '', false ); $urlBuilder->expects($this->atLeastOnce())->method('getUrl')->willReturn('http://iframe.url'); $payment = $this->getMockBuilder(\Magento\Paypal\Model\Payflowpro::class) ->setMethods(['isAvailable', 'getFrameActionUrl']) ->setMockClassName('paymentInstance') ->disableOriginalConstructor() ->getMock(); $paymentHelper= $this->createMock(\Magento\Payment\Helper\Data::class); $payment->expects($this->atLeastOnce())->method('isAvailable')->willReturn(true); $paymentHelper->expects($this->atLeastOnce())->method('getMethodInstance')->willReturn($payment); $configProvider = new IframeConfigProvider($paymentHelper, $urlBuilder); $configProvider->getConfig(); } }