| Tests that the parameters are mandatory in CSSKeyframesRule API. |
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| On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE". |
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| PASS keyframes.__proto__ is CSSKeyframesRule.prototype |
| PASS keyframes.insertRule() threw exception TypeError: Not enough arguments. |
| PASS keyframes.appendRule() threw exception TypeError: Not enough arguments. |
| PASS keyframes.deleteRule() threw exception TypeError: Not enough arguments. |
| PASS keyframes.findRule() threw exception TypeError: Not enough arguments. |
| PASS successfullyParsed is true |
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| TEST COMPLETE |
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