+ [misc] Add unit tests for aiModel::isAssoc() method

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

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

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

@@ -1043,4 +1043,23 @@ class aiTest
 
         return $result;
     }
+
+    /**
+     * Test isAssoc method.
+     *
+     * @param  array $array
+     * @access public
+     * @return mixed
+     */
+    public function isAssocTest($array = null)
+    {
+        /* Using reflection to call private static method */
+        $reflection = new ReflectionClass($this->objectModel);
+        $method = $reflection->getMethod('isAssoc');
+        $method->setAccessible(true);
+        $result = $method->invoke(null, $array);
+        if(dao::isError()) return dao::getError();
+
+        return $result;
+    }
 }

module/ai/test/model/isassoc.php

@@ -0,0 +1,27 @@
+#!/usr/bin/env php
+<?php
+
+/**
+
+title=测试 aiModel::isAssoc();
+timeout=0
+cid=0
+
+- 步骤1：索引数组 @0
+- 步骤2：关联数组 @1
+- 步骤3：空数组 @0
+- 步骤4：混合键数组 @1
+- 步骤5：非连续数字键 @1
+
+*/
+
+include dirname(__FILE__, 5) . '/test/lib/init.php';
+include dirname(__FILE__, 2) . '/lib/ai.unittest.class.php';
+
+$aiTest = new aiTest();
+
+r($aiTest->isAssocTest(array(0, 1, 2))) && p() && e('0');                            // 步骤1：索引数组
+r($aiTest->isAssocTest(array('name' => 'test', 'id' => 1))) && p() && e('1');        // 步骤2：关联数组
+r($aiTest->isAssocTest(array())) && p() && e('0');                                   // 步骤3：空数组
+r($aiTest->isAssocTest(array(0 => 'a', 'key' => 'b'))) && p() && e('1');            // 步骤4：混合键数组
+r($aiTest->isAssocTest(array(1 => 'first', 3 => 'third'))) && p() && e('1');        // 步骤5：非连续数字键