1 files changed, 10 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/basic/testDateNow.js b/js/src/jit-test/tests/basic/testDateNow.js
new file mode 100644
index 0000000000..0a186caa28
--- /dev/null
+++ b/js/src/jit-test/tests/basic/testDateNow.js
@@ -0,0 +1,10 @@
+function testDateNow() {
+    // Accessing global.Date for the first time will change the global shape,
+    // so do it before the loop starts; otherwise we have to loop an extra time
+    // to pick things up.
+    var time = Date.now();
+    for (var j = 0; j < 9; ++j)
+        time = Date.now();
+    return "ok";
+}
+assertEq(testDateNow(), "ok");