Harness status: OK

Found 12 tests

11 Pass
1 Fail
Pass	Document: CustomElementRegistry.prototype.initialize should upgrade the element given to the first argument
Pass	Document: CustomElementRegistry.prototype.initialize should upgrade elements in tree order
Pass	Document: CustomElementRegistry.prototype.initialize only upgrades elements beloning to the registry
Pass	HTMLDocument: CustomElementRegistry.prototype.initialize should upgrade the element given to the first argument
Pass	HTMLDocument: CustomElementRegistry.prototype.initialize should upgrade elements in tree order
Pass	HTMLDocument: CustomElementRegistry.prototype.initialize only upgrades elements beloning to the registry
Pass	XHTMLDocument: CustomElementRegistry.prototype.initialize should upgrade the element given to the first argument
Pass	XHTMLDocument: CustomElementRegistry.prototype.initialize should upgrade elements in tree order
Pass	XHTMLDocument: CustomElementRegistry.prototype.initialize only upgrades elements beloning to the registry
Pass	CustomElementRegistry.prototype.initialize upgrades already initialized elements
Pass	CustomElementRegistry.prototype.initialize upgrades custom elements in declarative shadow root when initialize() runs before define()
Fail	CustomElementRegistry.prototype.initialize upgrades custom elements in imperative shadow root when inserted before define()