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-rw-r--r--js/src/tests/ecma_5/Array/redefine-nonwritable-length-custom-conversion-call-counts.js45
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diff --git a/js/src/tests/ecma_5/Array/redefine-nonwritable-length-custom-conversion-call-counts.js b/js/src/tests/ecma_5/Array/redefine-nonwritable-length-custom-conversion-call-counts.js
new file mode 100644
index 000000000..b77f39675
--- /dev/null
+++ b/js/src/tests/ecma_5/Array/redefine-nonwritable-length-custom-conversion-call-counts.js
@@ -0,0 +1,45 @@
+/*
+ * Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/licenses/publicdomain/
+ * Contributor:
+ * Jeff Walden <jwalden+code@mit.edu>
+ */
+
+//-----------------------------------------------------------------------------
+var BUGNUMBER = 866700;
+var summary = "Assertion redefining non-writable length to a non-numeric value";
+
+print(BUGNUMBER + ": " + summary);
+
+/**************
+ * BEGIN TEST *
+ **************/
+
+var count = 0;
+
+var convertible =
+ {
+ valueOf: function()
+ {
+ count++;
+ return 0;
+ }
+ };
+
+var arr = [];
+Object.defineProperty(arr, "length", { value: 0, writable: false });
+
+Object.defineProperty(arr, "length", { value: convertible });
+assertEq(count, 2);
+
+Object.defineProperty(arr, "length", { value: convertible });
+assertEq(count, 4);
+
+assertEq(arr.length, 0);
+
+/******************************************************************************/
+
+if (typeof reportCompare === "function")
+ reportCompare(true, true);
+
+print("Tests complete");