/** * @return void */ public function testExecute() { $this->abstractBlockMock->expects($this->once())->method('getExcelFile')->willReturn(['export']); $this->layoutMock->expects($this->once())->method('getChildBlock')->with('adminhtml.report.grid', 'grid.export'); $this->fileFactoryMock->expects($this->once())->method('create')->with('customers_orders.xml', ['export'], \Magento\Framework\App\Filesystem\DirectoryList::VAR_DIR); $this->exportOrdersExcel->execute(); }