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fix: Proxy stub 不装规范不存在的 prototype 属性

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彭俊皓
2026-09-24 05:09:34 +00:00
parent d8ea3d8a65
commit 7a0d3ce336
2 changed files with 74 additions and 63 deletions
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crates/oxide_vm/tests/builtins_stubs_tests.rs
+26 -25
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@@ -12,15 +12,15 @@ fn eval(vm: &mut Vm, source: &str) -> Result<JsValue, String> {
vm.run(&Arc::new(module))
}
/// 五 stub 构造器原型链钉：prototype 为对象、原型链落 Object.prototype、
/// constructor 回指构造器本体。
/// 四弱族 stub 构造器原型链钉：prototype 为对象、原型链落 Object.prototype、
/// constructor 回指构造器本体；规范 25.1 的 %Proxy% 无 prototype 属性，不在名表。
#[test]
fn stub_ctor_prototype_chain_all_five() {
fn stub_ctor_prototype_chain_weak_family() {
let mut vm = Vm::new();
let result = eval(
&mut vm,
"(function () { \
var names = ['Proxy', 'WeakMap', 'WeakSet', 'WeakRef', 'FinalizationRegistry']; \
var names = ['WeakMap', 'WeakSet', 'WeakRef', 'FinalizationRegistry']; \
for (var i = 0; i < names.length; i++) { \
var x = globalThis[names[i]]; \
if (typeof x.prototype !== 'object') { return false; } \
@@ -33,27 +33,27 @@ fn stub_ctor_prototype_chain_all_five() {
assert!(result.as_bool());
}
/// 五 stub 构造器 length/name 值钉 + 非枚举钉：构造器面三属性与原型对象自身
/// 属性均不泄漏进 Object.keys。
/// 五 stub 构造器 length/name 值钉 + 非枚举钉：构造器面属性（length/name 五族、
/// prototype 四弱族）与原型对象自身属性均不泄漏进 Object.keys。
#[test]
fn stub_ctor_length_name_identity_non_enumerable() {
let mut vm = Vm::new();
let result = eval(
&mut vm,
"(function () { \
var names = ['Proxy', 'WeakMap', 'WeakSet', 'WeakRef', 'FinalizationRegistry']; \
var expect = { Proxy: 2, WeakMap: 0, WeakSet: 0, WeakRef: 1, FinalizationRegistry: 1 }; \
for (var i = 0; i < names.length; i++) { \
var name = names[i]; \
var x = globalThis[name]; \
if (x.length !== expect[name] || x.name !== name) { return false; } \
var keys = Object.keys(x); \
for (var k = 0; k < keys.length; k++) { \
if (keys[k] === 'length' || keys[k] === 'name' || keys[k] === 'prototype') { return false; } \
} \
if (Object.keys(x.prototype).length !== 0) { return false; } \
} \
return true; })()",
var names = ['Proxy', 'WeakMap', 'WeakSet', 'WeakRef', 'FinalizationRegistry']; \
var expect = { Proxy: 2, WeakMap: 0, WeakSet: 0, WeakRef: 1, FinalizationRegistry: 1 }; \
for (var i = 0; i < names.length; i++) { \
var name = names[i]; \
var x = globalThis[name]; \
if (x.length !== expect[name] || x.name !== name) { return false; } \
var keys = Object.keys(x); \
for (var k = 0; k < keys.length; k++) { \
if (keys[k] === 'length' || keys[k] === 'name' || keys[k] === 'prototype') { return false; } \
} \
if (x.prototype !== undefined && Object.keys(x.prototype).length !== 0) { return false; } \
} \
return true; })()",
)
.unwrap();
assert!(result.as_bool());
@@ -76,18 +76,19 @@ fn weak_family_proto_to_string_tag() {
assert!(result.as_bool());
}
/// 原型成员读不抛钉：缺失方法读返 undefined（非对象 receiver 抛错形态消除）。
/// 原型成员读不抛钉：缺失方法读返 undefined（非对象 receiver 抛错形态消除）；
/// %Proxy% 无 prototype 属性，钉其缺失。
#[test]
fn stub_proto_member_read_returns_undefined() {
let mut vm = Vm::new();
let result = eval(
&mut vm,
"(function () { \
return typeof WeakMap.prototype.get === 'undefined' \
&& typeof WeakSet.prototype.add === 'undefined' \
&& typeof WeakRef.prototype.deref === 'undefined' \
&& typeof FinalizationRegistry.prototype.register === 'undefined' \
&& typeof Proxy.prototype.nonexistent === 'undefined'; })()",
return typeof WeakMap.prototype.get === 'undefined' \
&& typeof WeakSet.prototype.add === 'undefined' \
&& typeof WeakRef.prototype.deref === 'undefined' \
&& typeof FinalizationRegistry.prototype.register === 'undefined' \
&& Proxy.prototype === undefined; })()",
)
.unwrap();
assert!(result.as_bool());