| This is a testharness.js-based test. |
| PASS add on DOMTokenList must enqueue an attributeChanged reaction when adding an attribute |
| PASS add on DOMTokenList must not enqueue an attributeChanged reaction when adding an unobserved attribute |
| PASS add on DOMTokenList must enqueue an attributeChanged reaction when adding a value to an existing attribute |
| PASS add on DOMTokenList must not enqueue an attributeChanged reaction when adding a value to an unobserved attribute |
| PASS add on DOMTokenList must enqueue exactly one attributeChanged reaction when adding multiple values to an attribute |
| PASS remove on DOMTokenList must enqueue an attributeChanged reaction when removing a value from an attribute |
| PASS remove on DOMTokenList must enqueue exactly one attributeChanged reaction when removing multiple values to an attribute |
| PASS remove on DOMTokenList must enqueue an attributeChanged reaction even when removing a non-existent value from an attribute |
| PASS remove on DOMTokenList must not enqueue an attributeChanged reaction when removing a value from an unobserved attribute |
| PASS toggle on DOMTokenList must enqueue an attributeChanged reaction when adding a value to an attribute |
| PASS toggle on DOMTokenList must enqueue an attributeChanged reaction when removing a value from an attribute |
| FAIL replace on DOMTokenList must enqueue an attributeChanged reaction when replacing a value in an attribute instance.classList.replace is not a function |
| FAIL replace on DOMTokenList must not enqueue an attributeChanged reaction when the token to replace does not exist in the attribute instance.classList.replace is not a function |
| FAIL replace on DOMTokenList must not enqueue an attributeChanged reaction when replacing a value in an unobserved attribute instance.classList.replace is not a function |
| PASS the stringifier of DOMTokenList must enqueue an attributeChanged reaction when adding an observed attribute |
| PASS the stringifier of DOMTokenList must not enqueue an attributeChanged reaction when adding an unobserved attribute |
| PASS the stringifier of DOMTokenList must enqueue an attributeChanged reaction when mutating the value of an observed attribute |
| PASS the stringifier of DOMTokenList must not enqueue an attributeChanged reaction when mutating the value of an unobserved attribute |
| PASS the stringifier of DOMTokenList must enqueue an attributeChanged reaction when the setter is called with the original value of the attribute |
| Harness: the test ran to completion. |
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