JavaScriptCore-7601.1.46.3.tar.gz

[apple/javascriptcore.git] / tests / stress / arguments-bizarre-behaviour-disable-enumerability.js

diff --git a/tests/stress/arguments-bizarre-behaviour-disable-enumerability.js b/tests/stress/arguments-bizarre-behaviour-disable-enumerability.js
new file mode 100644 (file)
index 0000000..947850a
--- /dev/null
+++ b/tests/stress/arguments-bizarre-behaviour-disable-enumerability.js
@@ -0,0 +1,30 @@
+function foo(x) {
+    Object.defineProperty(arguments, 0, {configurable: true, enumerable: false, writable:true, value:42});
+    return [x, arguments[0], arguments]
+}
+
+var result = foo(1);
+
+if (result[0] !== 42)
+    throw new Error();
+
+if (result[1] !== 42)
+    throw new Error();
+
+if (Array.prototype.join.call(result[2], ",") != "42")
+    throw new Error();
+
+var array = [];
+for (var s in result[2])
+    array.push(s);
+
+if (array.join(",") != "0")
+    throw new Error();
+
+if (Object.keys(result[2]).join(",") != "0")
+    throw new Error();
+
+// FIXME: This is totally weird!
+// https://bugs.webkit.org/show_bug.cgi?id=141952
+if (Object.getOwnPropertyDescriptor(result[2], 0).enumerable !== true)
+    throw new Error();