test(core): 添加对象比较基本功能测试

- 添加标准对象比较处理器测试用例
- 创建多个类实例验证相等性判断逻辑
- 测试相同类不同实例间的比较行为
- 验证不同类对象间的比较结果
- 添加继承关系对象的比较测试
- 验证对象处理器不同的比较场景

tests/core/lang/compare_objects_basic1.phpt

@@ -0,0 +1,57 @@
+--TEST--
+Test standard 'compare' object handler
+--FILE--
+<?php
+class class1{}
+
+class class2{}
+
+class class3{
+    public $aaa;
+    private $bbb;
+    protected $ccc;
+}
+
+class class4 extends class3{
+}
+
+class class5 extends class3{
+    public $ddd;
+    private $eee;
+}
+
+function main() {
+    echo "Simple test for standard compare object handler\n";
+    // Define a bunch of objects all of which will use standard compare object handler
+    $obj1 = new class1();
+    $obj2 = new class2();
+    $obj3 = new class3();
+    $obj4 = new class4();
+    $obj5 = new class5();
+
+    echo "\n-- The following compare should return TRUE --\n";
+    var_dump($obj1 == $obj1);
+
+    echo "\n-- All the following compares should return FALSE --\n";
+    var_dump($obj1 == $obj2);
+    var_dump($obj1 == $obj3);
+    var_dump($obj1 == $obj4);
+    var_dump($obj1 == $obj5);
+    var_dump($obj4 == $obj3);
+    var_dump($obj5 == $obj3);
+}
+
+?>
+--EXPECT--
+Simple test for standard compare object handler
+
+-- The following compare should return TRUE --
+bool(true)
+
+-- All the following compares should return FALSE --
+bool(false)
+bool(false)
+bool(false)
+bool(false)
+bool(false)
+bool(false)

tests/core/lang/compare_objects_basic2.phpt

@@ -0,0 +1,22 @@
+--TEST--
+Test object compare when object handler different
+--FILE--
+<?php
+
+class X {
+}
+
+function main() {
+    //Set the default time zone
+    date_default_timezone_set("Europe/London");
+
+    echo "Simple test comparing two objects with different compare callback handler\n";
+    $obj1 = new X();
+    $obj2 = new DateTime(("2009-02-12 12:47:41 GMT"));
+
+    var_dump($obj1 == $obj2);
+}
+?>
+--EXPECT--
+Simple test comparing two objects with different compare callback handler
+bool(false)