Test the behavior of Object.preventExtensions() for Window / Location.

On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".


* Cross origin
PASS Object.isExtensible(frames[0]) is true
PASS Object.preventExtensions(frames[0]) threw exception TypeError: Cannot prevent extensions on this object.
PASS Object.isExtensible(frames[0]) is true
PASS Object.isExtensible(frames[0].location) is true
PASS Object.preventExtensions(frames[0].location) threw exception TypeError: Cannot prevent extensions on this object.
PASS Object.isExtensible(frames[0].location) is true

* Same origin
PASS Object.isExtensible(window) is true
PASS Object.preventExtensions(window) threw exception TypeError: Cannot prevent extensions on this object.
PASS Object.isExtensible(window) is true
PASS Object.isExtensible(window.location) is true
PASS Object.preventExtensions(window.location) threw exception TypeError: Cannot prevent extensions on this object.
PASS Object.isExtensible(window.location) is true
PASS successfullyParsed is true

TEST COMPLETE