LayoutTests/accessibility/custom-elements/pressed.html

<!DOCTYPE html>
<html>
<body>
<script src="../../resources/js-test.js"></script>
<script src="../../resources/accessibility-helper.js"></script>
<custom-button id="button-1"></custom-button>
<custom-button id="button-2" aria-pressed="false" aria-required="false" aria-selected="false"></custom-button>
<script>

customElements.define('custom-button', class CustomButton extends HTMLElement {
    constructor()
    {
        super();
        const internals = this.attachInternals();
        internals.role = 'button';
        internals.ariaPressed = 'true';
        internals.ariaRequired = 'true';
        internals.ariaSelected = 'true';
    }
});

description("This tests that aria fallback roles work correctly.");
if (!window.accessibilityController)
    debug('This test requires accessibilityController');
else {
    shouldBeEqualToString('accessibilityController.accessibleElementById("button-1").role', 'AXRole: AXCheckBox');
    shouldBeEqualToString('accessibilityController.accessibleElementById("button-1").stringValue', 'AXValue: 1');
    shouldBeTrue('accessibilityController.accessibleElementById("button-1").isRequired');
    shouldBeTrue('accessibilityController.accessibleElementById("button-1").isSelected');
    shouldBeEqualToString('accessibilityController.accessibleElementById("button-2").role', 'AXRole: AXCheckBox');
    shouldBeEqualToString('accessibilityController.accessibleElementById("button-2").stringValue', 'AXValue: 0');
    shouldBeFalse('accessibilityController.accessibleElementById("button-2").isRequired');
    shouldBeFalse('accessibilityController.accessibleElementById("button-2").isSelected');
}

</script>
</body>
</html>