New API: getByOwned(Element(s))

[juanca]

Not set on the name, etc. But the general idea is to encapsulate aria-owns and allowing easy test patterns for interactive content referenced by aria-owns.

Example: In ARIA 1.1, the combobox role has at most 2 owned elements: a textbox and a popup. The textbox is can be selected via a query such as screen.getByRole('role', { name }).querySelector('input') or screen.getByLabelText(name, { selector: 'input' }). However, this does not really test the aria-owns property.

I think we can do better than using a input selector. What about:

• Step 1. Get element with aria-owns.
• Step 2. Get all owned elements.
• Step 3. Use a selector to filter/find a particular element.

e.g. screen.getByOwned('combobox', { name }, 'textbox')?