public function test_getPvByProductAndStock()
 {
     /** === Test Data === */
     $TBL_STOCK_ITEM = 'stock item';
     $TBL_PV = 'pv table';
     $PRODUCT_ID = 32;
     $STOCK_ID = 64;
     $RESULT = 'result';
     /** === Setup Mocks === */
     // $tblStockItem = [$asStockItem => $this->_resource->getTableName(Cfg::ENTITY_MAGE_CATALOGINVENTORY_STOCK_ITEM)];
     $this->mResource->shouldReceive('getTableName')->once()->andReturn($TBL_STOCK_ITEM);
     // $tblPv = [$asPv => $this->_resource->getTableName(Entity::ENTITY_NAME)];
     $this->mResource->shouldReceive('getTableName')->once()->andReturn($TBL_PV);
     // $query = $conn->select();
     $mQuery = $this->_mockDbSelect(['from', 'joinLeft', 'where']);
     $this->mConn->shouldReceive('select')->once()->andReturn($mQuery);
     // $result = $conn->fetchOne($query);
     $this->mConn->shouldReceive('fetchOne')->once()->andReturn($RESULT);
     /** === Call and asserts  === */
     $res = $this->obj->getPvByProductAndStock($PRODUCT_ID, $STOCK_ID);
     $this->assertEquals($RESULT, $res);
 }