chromium/content/test/data/accessibility/mac/methods/accessibility-label.html

<!--
@SCRIPT:
  // Labelable with not empty name
  labelable.accessibilityLabel
  radio-button.accessibilityLabel
  checkbox.accessibilityLabel
-->
<!DOCTYPE html>
<input id="labelable" aria-label="This is input">

<!-- Realistic case from https://crbug.com/1430419 -->
  <input id="radio-button" role="radio" aria-labelledby="radio-label">
  <span id="radio-label" aria-label="Radio Label">Radio Label</span>
  <input id="checkbox" role="checkbox" aria-labelledby="checkbox-label">
  <span id="checkbox-label" aria-label="Checkbox Label">Checkbox Label</span>
</html>