fix: bind_constructor 宏补 length 描述符 meta

crates/oxide_vm/tests/builtins_array_tests.rs

@@ -458,3 +458,15 @@ fn array_is_array_rejects_prototype_inherited_object() {
     let (_vm, result) = eval("Array.isArray([])").unwrap();
     assert_eq!(result, JsValue::bool(true));
 }
+
+#[test]
+fn array_length_descriptor() {
+    // Array.length = 1，描述符 { writable:false, enumerable:false, configurable:true }。
+    let (vm, r) = eval(
+        "var d = Object.getOwnPropertyDescriptor(Array, 'length'); \
+         d.value === 1 && d.writable === false && d.enumerable === false && d.configurable === true",
+    )
+    .unwrap();
+    let _ = vm;
+    assert!(r.as_bool());
+}

crates/oxide_vm/tests/builtins_date_tests.rs

@@ -580,3 +580,16 @@ fn date_set_utc_hours_valid_kept() {
     let r = eval(&mut vm, "var d = new Date(0); d.setUTCHours(13); d.getUTCHours()").unwrap();
     assert_eq!(r.as_double() as i64, 13);
 }
+
+#[test]
+fn date_length_descriptor() {
+    // Date.length = 7，描述符 { writable:false, enumerable:false, configurable:true }。
+    let mut vm = Vm::new();
+    let r = eval(
+        &mut vm,
+        "var d = Object.getOwnPropertyDescriptor(Date, 'length'); \
+         d.value === 7 && d.writable === false && d.enumerable === false && d.configurable === true",
+    )
+    .unwrap();
+    assert!(r.as_bool());
+}

crates/oxide_vm/tests/builtins_map_tests.rs

@@ -268,3 +268,16 @@ fn map_get_or_insert_length_and_name() {
     .unwrap();
     assert!(r.as_bool());
 }
+
+#[test]
+fn map_length_descriptor() {
+    // Map.length = 0，描述符 { writable:false, enumerable:false, configurable:true }。
+    let mut vm = Vm::new();
+    let r = eval(
+        &mut vm,
+        "var d = Object.getOwnPropertyDescriptor(Map, 'length'); \
+         d.value === 0 && d.writable === false && d.enumerable === false && d.configurable === true",
+    )
+    .unwrap();
+    assert!(r.as_bool());
+}

crates/oxide_vm/tests/builtins_set_tests.rs

@@ -226,3 +226,16 @@ fn set_object_key_identity() {
     let r = eval(&mut vm, "var o = { a: 1 }; var s = new Set(); s.add(o); s.has(o) && !s.has({ a: 1 })").unwrap();
     assert!(r.as_bool());
 }
+
+#[test]
+fn set_length_descriptor() {
+    // Set.length = 0，描述符 { writable:false, enumerable:false, configurable:true }。
+    let mut vm = Vm::new();
+    let r = eval(
+        &mut vm,
+        "var d = Object.getOwnPropertyDescriptor(Set, 'length'); \
+         d.value === 0 && d.writable === false && d.enumerable === false && d.configurable === true",
+    )
+    .unwrap();
+    assert!(r.as_bool());
+}

crates/oxide_vm/tests/builtins_string_tests.rs

@@ -1672,3 +1672,16 @@ fn string_repeat_count_range_error() {
     let err = eval(&mut vm, "'ab'.repeat(Infinity)").unwrap_err();
     assert!(err.contains("RangeError"), "got: {}", err);
 }
+
+#[test]
+fn string_length_descriptor() {
+    // String.length = 1，描述符 { writable:false, enumerable:false, configurable:true }。
+    let mut vm = Vm::new();
+    let r = eval(
+        &mut vm,
+        "var d = Object.getOwnPropertyDescriptor(String, 'length'); \
+         d.value === 1 && d.writable === false && d.enumerable === false && d.configurable === true",
+    )
+    .unwrap();
+    assert!(r.as_bool());
+}

crates/oxide_vm/tests/builtins_symbol_tests.rs

@@ -356,3 +356,16 @@ fn symbol_proto_direct_description_access_throws_type_error() {
     .unwrap();
     assert!(result.as_bool());
 }
+
+#[test]
+fn symbol_length_descriptor() {
+    // Symbol.length = 0，描述符 { writable:false, enumerable:false, configurable:true }。
+    let mut vm = Vm::new();
+    let r = eval(
+        &mut vm,
+        "var d = Object.getOwnPropertyDescriptor(Symbol, 'length'); \
+         d.value === 0 && d.writable === false && d.enumerable === false && d.configurable === true",
+    )
+    .unwrap();
+    assert!(r.as_bool());
+}