public function testExecute()
{
$this->session->expects($this->once())->method('getLastOrderId')->willReturn(1);
$this->session->expects($this->once())->method('setLastOrderId')->with(null);
$title = $this->getMockBuilder(\Magento\Framework\View\Page\Title::class)->disableOriginalConstructor()->getMock();
$title->expects($this->once())->method('set')->with(__('Thank you for your payment!'));
$config = $this->getMockBuilder(\Magento\Framework\View\Page\Config::class)->disableOriginalConstructor()->getMock();
$config->expects($this->once())->method('getTitle')->willReturn($title);
$page = $this->getMockBuilder(\Magento\Framework\View\Result\Page::class)->disableOriginalConstructor()->getMock();
$page->expects($this->once())->method('getConfig')->willReturn($config);
$this->resultPageFactory->expects($this->once())->method('create')->willReturn($page);
$this->assertEquals($page, $this->controller->execute());
}
