Harness status: OK

Found 9 tests

2 Pass
7 Fail
Fail	@scope can match :host
Fail	@scope can match :host(...)
Pass	:scope matches host via the scoping root
Fail	:scope within :is() matches host via the scoping root
Fail	Implicit @scope as direct child of shadow root
Fail	Implicit @scope in construted stylesheet
Pass	Matching :host via &, :scope (subject)
Fail	Matching :host via &, :scope (non-subject)
Fail	Matching :host via &, :scope (non-subject, >)