1 files changed, 70 insertions, 0 deletions
diff --git a/js/src/tests/non262/Array/length-nonwritable-redefine-nop.js b/js/src/tests/non262/Array/length-nonwritable-redefine-nop.js
new file mode 100644
index 0000000000..1d7fe32c8e
--- /dev/null
+++ b/js/src/tests/non262/Array/length-nonwritable-redefine-nop.js
@@ -0,0 +1,70 @@
+/*
+ * Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/licenses/publicdomain/
+ * Contributor:
+ *   Jeff Walden <jwalden+code@mit.edu>
+ */
+
+//-----------------------------------------------------------------------------
+var BUGNUMBER = 858381;
+var summary = "No-op array length redefinition";
+
+print(BUGNUMBER + ": " + summary);
+
+/**************
+ * BEGIN TEST *
+ **************/
+
+var arr;
+
+// initializedLength == capacity == length
+// 6 == 6 == 6
+arr = Object.defineProperty([0, 1, 2, 3, 4, 5], "length", { writable: false });
+Object.defineProperty(arr, "length", { value: 6 });
+Object.defineProperty(arr, "length", { writable: false });
+Object.defineProperty(arr, "length", { configurable: false });
+Object.defineProperty(arr, "length", { writable: false, configurable: false });
+Object.defineProperty(arr, "length", { writable: false, value: 6 });
+Object.defineProperty(arr, "length", { configurable: false, value: 6 });
+Object.defineProperty(arr, "length", { writable: false, configurable: false, value: 6 });
+
+// initializedLength == capacity < length
+// 6 == 6 < 8
+arr = Object.defineProperty([0, 1, 2, 3, 4, 5], "length", { value: 8, writable: false });
+Object.defineProperty(arr, "length", { value: 8 });
+Object.defineProperty(arr, "length", { writable: false });
+Object.defineProperty(arr, "length", { configurable: false });
+Object.defineProperty(arr, "length", { writable: false, configurable: false });
+Object.defineProperty(arr, "length", { writable: false, value: 8 });
+Object.defineProperty(arr, "length", { configurable: false, value: 8 });
+Object.defineProperty(arr, "length", { writable: false, configurable: false, value: 8 });
+
+// initializedLength < capacity == length
+// 7 < 8 == 8
+arr = Object.defineProperty([0, 1, 2, 3, 4, 5, 6, /* hole */, ], "length",
+                            { value: 8, writable: false });
+Object.defineProperty(arr, "length", { value: 8 });
+Object.defineProperty(arr, "length", { writable: false });
+Object.defineProperty(arr, "length", { configurable: false });
+Object.defineProperty(arr, "length", { writable: false, configurable: false });
+Object.defineProperty(arr, "length", { writable: false, value: 8 });
+Object.defineProperty(arr, "length", { configurable: false, value: 8 });
+Object.defineProperty(arr, "length", { writable: false, configurable: false, value: 8 });
+
+// initializedLength < capacity < length
+// 3 < 6 < 8
+arr = Object.defineProperty([0, 1, 2], "length", { value: 8, writable: false });
+Object.defineProperty(arr, "length", { value: 8 });
+Object.defineProperty(arr, "length", { writable: false });
+Object.defineProperty(arr, "length", { configurable: false });
+Object.defineProperty(arr, "length", { writable: false, configurable: false });
+Object.defineProperty(arr, "length", { writable: false, value: 8 });
+Object.defineProperty(arr, "length", { configurable: false, value: 8 });
+Object.defineProperty(arr, "length", { writable: false, configurable: false, value: 8 });
+
+/******************************************************************************/
+
+if (typeof reportCompare === "function")
+  reportCompare(true, true);
+
+print("Tests complete");