Tests:
Test 1
Authors SHOULD NOT use the aria-checked attribute on any element where the checkedness of the element can be in opposition to the current value of the aria-checked attribute.
The following input type=checkbox has an aria-checked=true, which does not update to match the checked state of the native element.
Expected result:
Warning that authors should not use aria-checked on the input.
Test 2
Authors SHOULD NOT use the aria-checked attribute on any element where the checkedness of the element can be in opposition to the current value of the aria-checked attribute.
The following input type=radio elements each have an aria-checked=true, which does not update to match the checked state of the native element.
Expected result:
Warning that authors should not use aria-checked on the inputs.