| CONSOLE WARNING: :unresolved pseudo selector is deprecated and will be removed in M80, around February 2020. Please use :not(:defined) instead. See https://www.chromestatus.com/features/4642138092470272 and https://developers.google.com/web/updates/2019/07/web-components-time-to-upgrade for more details. |
| Tests basic web-exposure of Custom Elements |
| |
| On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE". |
| |
| Document.prototype.hasOwnProperty("registerElement") |
| true |
| |
| |
| typeof Document.prototype.registerElement |
| function |
| |
| |
| document.createElement("x-a") instanceof HTMLUnknownElement |
| false |
| |
| |
| document.querySelector(":unresolved") |
| [object HTMLDivElement] |
| |
| |
| span.getAttribute("is") |
| type-extension |
| |
| |
| PASS window.customElements.define("a-a", A, {extends: "b"}) did not throw exception. |
| PASS successfullyParsed is true |
| |
| TEST COMPLETE |
| |
