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-rw-r--r--js/src/tests/non262/strict/15.4.5.1.js84
1 files changed, 84 insertions, 0 deletions
diff --git a/js/src/tests/non262/strict/15.4.5.1.js b/js/src/tests/non262/strict/15.4.5.1.js
new file mode 100644
index 0000000000..3fb04ebd61
--- /dev/null
+++ b/js/src/tests/non262/strict/15.4.5.1.js
@@ -0,0 +1,84 @@
+/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*- */
+
+/*
+ * Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/licenses/publicdomain/
+ */
+
+var out = {};
+
+function arr() {
+ return Object.defineProperty([1, 2, 3, 4], 2, {configurable: false});
+}
+
+function nonStrict1(out)
+{
+ var a = out.array = arr();
+ a.length = 2;
+}
+
+function strict1(out)
+{
+ "use strict";
+ var a = out.array = arr();
+ a.length = 2;
+ return a;
+}
+
+out.array = null;
+nonStrict1(out);
+assertEq(deepEqual(out.array, [1, 2, 3]), true);
+
+out.array = null;
+try
+{
+ strict1(out);
+ throw "no error";
+}
+catch (e)
+{
+ assertEq(e instanceof TypeError, true, "expected TypeError, got " + e);
+}
+assertEq(deepEqual(out.array, [1, 2, 3]), true);
+
+// Internally, SpiderMonkey has two representations for arrays:
+// fast-but-inflexible, and slow-but-flexible. Adding a non-index property
+// to an array turns it into the latter. We should test on both kinds.
+function addx(obj) {
+ obj.x = 5;
+ return obj;
+}
+
+function nonStrict2(out)
+{
+ var a = out.array = addx(arr());
+ a.length = 2;
+}
+
+function strict2(out)
+{
+ "use strict";
+ var a = out.array = addx(arr());
+ a.length = 2;
+}
+
+out.array = null;
+nonStrict2(out);
+assertEq(deepEqual(out.array, addx([1, 2, 3])), true);
+
+out.array = null;
+try
+{
+ strict2(out);
+ throw "no error";
+}
+catch (e)
+{
+ assertEq(e instanceof TypeError, true, "expected TypeError, got " + e);
+}
+assertEq(deepEqual(out.array, addx([1, 2, 3])), true);
+
+if (typeof reportCompare === "function")
+ reportCompare(true, true);
+
+print("Tests complete");