| Test the behavior of Object.preventExtensions() for Window / Location. |
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| On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE". |
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| * Cross origin |
| PASS Object.isExtensible(frames[0]) is true |
| PASS Object.preventExtensions(frames[0]) threw exception TypeError: Unable to prevent extension in Object.preventExtensions. |
| PASS Object.isExtensible(frames[0]) is true |
| PASS Object.isExtensible(frames[0].location) is true |
| PASS Object.preventExtensions(frames[0].location) threw exception TypeError: Unable to prevent extension in Object.preventExtensions. |
| PASS Object.isExtensible(frames[0].location) is true |
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| * Same origin |
| PASS Object.isExtensible(window) is true |
| PASS Object.preventExtensions(window) threw exception TypeError: Unable to prevent extension in Object.preventExtensions. |
| PASS Object.isExtensible(window) is true |
| PASS Object.isExtensible(window.location) is true |
| PASS Object.preventExtensions(window.location) threw exception TypeError: Unable to prevent extension in Object.preventExtensions. |
| PASS Object.isExtensible(window.location) is true |
| PASS successfullyParsed is true |
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| TEST COMPLETE |
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