1 files changed, 61 insertions, 0 deletions
diff --git a/js/src/tests/ecma_5/Array/frozen-dense-array.js b/js/src/tests/ecma_5/Array/frozen-dense-array.js
new file mode 100644
index 000000000..9db63036f
--- /dev/null
+++ b/js/src/tests/ecma_5/Array/frozen-dense-array.js
@@ -0,0 +1,61 @@
+/*
+ * Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/licenses/publicdomain/
+ * Author: Emilio Cobos Álvarez <ecoal95@gmail.com>
+ */
+var BUGNUMBER = 1310744;
+var summary = "Dense array properties shouldn't be modified when they're frozen";
+
+print(BUGNUMBER + ": " + summary);
+
+var a = Object.freeze([4, 5, 1]);
+
+function assertArrayIsExpected() {
+  assertEq(a.length, 3);
+  assertEq(a[0], 4);
+  assertEq(a[1], 5);
+  assertEq(a[2], 1);
+}
+
+assertThrowsInstanceOf(() => a.reverse(), TypeError);
+assertThrowsInstanceOf(() => a.shift(), TypeError);
+assertThrowsInstanceOf(() => a.unshift(0), TypeError);
+assertThrowsInstanceOf(() => a.sort(function() {}), TypeError);
+assertThrowsInstanceOf(() => a.pop(), TypeError);
+assertThrowsInstanceOf(() => a.fill(0), TypeError);
+assertThrowsInstanceOf(() => a.splice(0, 1, 1), TypeError);
+assertThrowsInstanceOf(() => a.push("foo"), TypeError);
+assertThrowsInstanceOf(() => { "use strict"; a.length = 5; }, TypeError);
+assertThrowsInstanceOf(() => { "use strict"; a[2] = "foo"; }, TypeError);
+assertThrowsInstanceOf(() => { "use strict"; delete a[0]; }, TypeError);
+assertThrowsInstanceOf(() => a.splice(Math.a), TypeError);
+
+// Shouldn't throw, since this is not strict mode, but shouldn't change the
+// value of the property.
+a.length = 5;
+a[2] = "foo";
+assertEq(delete a[0], false);
+
+assertArrayIsExpected();
+
+var watchpointCalled = false;
+// NOTE: Be careful with the position of this test, since this sparsifies the
+// elements and you might not test what you think you're testing otherwise.
+a.watch(2, function(prop, oldValue, newValue) {
+  watchpointCalled = true;
+  assertEq(prop, 2);
+  assertEq(oldValue, 1);
+  assertEq(newValue, "foo");
+});
+
+assertArrayIsExpected();
+
+a.length = 5;
+a[2] = "foo";
+assertEq(watchpointCalled, true);
+assertEq(delete a[0], false);
+
+assertArrayIsExpected();
+
+if (typeof reportCompare === "function")
+  reportCompare(true, true);