Add m-esr52 at 52.6.0

1 files changed, 45 insertions, 0 deletions

diff --git a/js/src/tests/ecma_5/Array/unshift-01.js b/js/src/tests/ecma_5/Array/unshift-01.js
new file mode 100644
index 000000000..84c9d88a5
--- /dev/null
+++ b/js/src/tests/ecma_5/Array/unshift-01.js
@@ -0,0 +1,45 @@
+/*
+ * Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/licenses/publicdomain/
+ */
+
+//-----------------------------------------------------------------------------
+var BUGNUMBER = 614070;
+var summary = 'Array.prototype.unshift without args';
+
+print(BUGNUMBER + ": " + summary);
+
+/**************
+ * BEGIN TEST *
+ **************/
+
+// ES6 ToLength clamps length values to 2^53 - 1.
+// We currently clamp to 2^32 - 1 instead. See bug 924058.
+var MAX_LENGTH = 0xffffffff;
+
+var a = {};
+a.length = MAX_LENGTH + 1;
+assertEq([].unshift.call(a), MAX_LENGTH);
+assertEq(a.length, MAX_LENGTH);
+
+function testGetSet(len, expected) {
+    var newlen;
+    var a = { get length() { return len; }, set length(v) { newlen = v; } };
+    var res = [].unshift.call(a);
+    assertEq(res, expected);
+    assertEq(newlen, expected);
+}
+
+testGetSet(0, 0);
+testGetSet(10, 10);
+testGetSet("1", 1);
+testGetSet(null, 0);
+testGetSet(MAX_LENGTH + 2, MAX_LENGTH);
+testGetSet(-5, 0);
+
+/******************************************************************************/
+
+if (typeof reportCompare === "function")
+  reportCompare(true, true);
+
+print("All tests passed!");