| Tests that the parameters to CSSStyleSheet.insertRule() / deleteRule() are mandatory. |
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| On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE". |
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| PASS stylesheet.__proto__ is CSSStyleSheet.prototype |
| PASS stylesheet.deleteRule() threw exception TypeError: Not enough arguments. |
| PASS stylesheet.insertRule() threw exception TypeError: Not enough arguments. |
| PASS stylesheet.rules.length is 0 |
| PASS stylesheet.insertRule('body { margin: 0; }') did not throw exception. |
| PASS stylesheet.rules.length is 1 |
| PASS successfullyParsed is true |
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| TEST COMPLETE |
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