`<aside>` with `aria-labelledby`

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This test case is designed to determine how the <aside> element and an associated aria-labelledby element are announced by various screen readers.

By default, the element being tested does not receive focus, so the only way to test how it is announced is via:

Example

<aside aria-labelledby="one">
  <h4 id="one">Test content</h4>
</aside>

Chrome: Test content. Complementary. [Stop] Heading level 4. Test content. [Stop] End of Test content. Complementary.
Firefox: Test content. Complementary. [Stop] Heading level 4. Test content. [Stop] End of Test content. Complementary.
Safari: Test content. Complementary. [Stop] Heading level 4. Test content. [Stop] End of Test content. Complementary.

Chrome: Complementary landmark. Heading level 4. Test content. [Label not announced]
Firefox: Complementary landmark. Heading level 4. Test content. [Label not announced]
Edge: Complementary landmark. Heading level 4. Test content. [Label not announced]