/** * test creditmemo list */ public function testSearch() { $searchCriteria = $this->getMock('Magento\\Framework\\Service\\V1\\Data\\SearchCriteria', [], [], '', false); $this->creditmemoListMock->expects($this->once())->method('invoke')->with($searchCriteria)->will($this->returnValue('search_result')); $this->assertEquals('search_result', $this->creditmemoRead->search($searchCriteria)); }