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-rw-r--r--js/src/tests/non262/Proxy/report-writable-as-non-writable.js20
1 files changed, 20 insertions, 0 deletions
diff --git a/js/src/tests/non262/Proxy/report-writable-as-non-writable.js b/js/src/tests/non262/Proxy/report-writable-as-non-writable.js
new file mode 100644
index 0000000000..c0facd1057
--- /dev/null
+++ b/js/src/tests/non262/Proxy/report-writable-as-non-writable.js
@@ -0,0 +1,20 @@
+"use strict";
+
+var target = {};
+Object.defineProperty(target, "test",
+ {configurable: false, writable: true, value: 1});
+
+var proxy = new Proxy(target, {
+ getOwnPropertyDescriptor(target, property) {
+ assertEq(property, "test");
+ return {configurable: false, writable: false, value: 1};
+ }
+});
+
+assertThrowsInstanceOf(() => Object.getOwnPropertyDescriptor(proxy, "test"),
+ TypeError);
+
+assertThrowsInstanceOf(() => Reflect.getOwnPropertyDescriptor(proxy, "test"),
+ TypeError);
+
+reportCompare(0, 0);