+ [misc] Add unit tests for datatableModel::sortOldCols() method

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

module/datatable/test/lib/datatable.unittest.class.php

@@ -101,4 +101,20 @@ class datatableTest
 
         return $result;
     }
+
+    /**
+     * Test sortOldCols method.
+     *
+     * @param object $a
+     * @param object $b
+     * @access public
+     * @return mixed
+     */
+    public function sortOldColsTest($a, $b)
+    {
+        $result = datatableModel::sortOldCols($a, $b);
+        if(dao::isError()) return dao::getError();
+
+        return $result;
+    }
 }

module/datatable/test/model/sortoldcols.php

@@ -0,0 +1,49 @@
+#!/usr/bin/env php
+<?php
+
+/**
+
+title=测试 datatableModel::sortOldCols();
+timeout=0
+cid=0
+
+- 执行datatableTest模块的sortOldColsTest方法，参数是$objA, $objB  @-1
+- 执行datatableTest模块的sortOldColsTest方法，参数是$objA, $objB  @0
+- 执行datatableTest模块的sortOldColsTest方法，参数是$objA, $objB  @7
+- 执行datatableTest模块的sortOldColsTest方法，参数是$objNoOrder, $objWithOrder  @0
+- 执行datatableTest模块的sortOldColsTest方法，参数是$objC, $objD  @50
+
+*/
+
+include dirname(__FILE__, 5) . '/test/lib/init.php';
+include dirname(__FILE__, 2) . '/lib/datatable.unittest.class.php';
+
+su('admin');
+
+$datatableTest = new datatableTest();
+
+$objA = new stdclass();
+$objB = new stdclass();
+
+$objA->order = 1;
+$objB->order = 2;
+r($datatableTest->sortOldColsTest($objA, $objB)) && p() && e('-1');
+
+$objA->order = 5;
+$objB->order = 5;
+r($datatableTest->sortOldColsTest($objA, $objB)) && p() && e('0');
+
+$objA->order = 10;
+$objB->order = 3;
+r($datatableTest->sortOldColsTest($objA, $objB)) && p() && e('7');
+
+$objNoOrder = new stdclass();
+$objWithOrder = new stdclass();
+$objWithOrder->order = 5;
+r($datatableTest->sortOldColsTest($objNoOrder, $objWithOrder)) && p() && e('0');
+
+$objC = new stdclass();
+$objD = new stdclass();
+$objC->order = 100;
+$objD->order = 50;
+r($datatableTest->sortOldColsTest($objC, $objD)) && p() && e('50');