| This is a testharness.js-based test. |
| [FAIL] Unknown element names get blocked without unknownMarkup. |
| Failed to execute 'setHTML' on 'Element': Failed to read the 'sanitizer' property from 'ElementSetHTMLOptions': Failed to convert value to 'Sanitizer'. |
| [FAIL] Unknown element names pass with unknownMarkup. |
| Failed to execute 'setHTML' on 'Element': Failed to read the 'sanitizer' property from 'ElementSetHTMLOptions': Failed to convert value to 'Sanitizer'. |
| [FAIL] Unknown attributes names get blocked without unknownMarkup. |
| Failed to execute 'setHTML' on 'Element': Failed to read the 'sanitizer' property from 'ElementSetHTMLOptions': Failed to convert value to 'Sanitizer'. |
| [FAIL] Unknown attribute names pass with unknownMarkup. |
| Failed to execute 'setHTML' on 'Element': Failed to read the 'sanitizer' property from 'ElementSetHTMLOptions': Failed to convert value to 'Sanitizer'. |
| Harness: the test ran to completion. |
| |