1 files changed, 50 insertions, 0 deletions
diff --git a/js/src/tests/ecma_5/strict/15.4.4.13.js b/js/src/tests/ecma_5/strict/15.4.4.13.js
new file mode 100644
index 000000000..05d757aea
--- /dev/null
+++ b/js/src/tests/ecma_5/strict/15.4.4.13.js
@@ -0,0 +1,50 @@
+/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*- */
+
+/*
+ * Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/licenses/publicdomain/
+ */
+
+function arr() {
+  return Object.defineProperty([1, 2, 3], 0, {writable: false});
+}
+
+function obj() {
+  var o = {0: 1, 1: 2, 2: 3, length: 3};
+  Object.defineProperty(o, 0, {writable: false});
+  return o;
+}
+
+assertEq(testLenientAndStrict('var a = arr(); [a.unshift(40, 50), a]',
+                              raisesException(TypeError),
+                              raisesException(TypeError)),
+         true);
+
+assertEq(testLenientAndStrict('var o = obj(); [Array.prototype.unshift.call(o, 40, 50), o]',
+                              raisesException(TypeError),
+                              raisesException(TypeError)),
+         true);
+
+function agap() {
+  var a = [1, 2, , 4];
+  Object.defineProperty(a, 3, {configurable: false});
+  return a;
+}
+
+function ogap() {
+  var o = {0: 1, 1: 2, /* no 2 */ 3: 4, length: 4};
+  Object.defineProperty(o, 3, {configurable: false});
+  return o;
+}
+
+assertEq(testLenientAndStrict('var a = agap(); [a.unshift(9), a]',
+                              raisesException(TypeError),
+                              raisesException(TypeError)),
+         true);
+
+assertEq(testLenientAndStrict('var o = ogap(); [Array.prototype.unshift.call(o, 9), o]',
+                              raisesException(TypeError),
+                              raisesException(TypeError)),
+         true);
+
+reportCompare(true, true);