| <!DOCTYPE html> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <body> |
| <div id="container"></div> |
| <div id="placeholder" role="searchbox"></div> |
| <input id="input-container"></input> |
| |
| <script type="module"> |
| import {WebFeature} from '/gen/third_party/blink/public/mojom/web_feature/web_feature.mojom.m.js'; |
| |
| test(() => { |
| // Verify that aria-placeholder is counted in light DOM. |
| internals.clearUseCounter(document, WebFeature.kARIAPlaceholderAttribute); |
| var domPlaceholder = document.getElementById('placeholder'); |
| domPlaceholder.setAttribute('aria-placeholder', 'MM-DD-YYYY'); |
| assert_true(internals.isUseCounted(document, WebFeature.kARIAPlaceholderAttribute)); |
| |
| // <input type=datetime-local> generates shadow DOM and makes use of the aria-placeholder attribute. |
| internals.clearUseCounter(document, WebFeature.kARIAPlaceholderAttribute); |
| assert_false(internals.isUseCounted(document, WebFeature.kARIAPlaceholderAttribute), "Check that the attribute has been cleared."); |
| var input = document.getElementById('input-container'); |
| input.setAttribute('type', 'datetime-local'); |
| assert_not_equals(internals.shadowRoot(input).querySelector('[aria-placeholder]'), null, "Attribute should exist in UA shadow DOM"); |
| assert_false(internals.isUseCounted(document, WebFeature.kARIAPlaceholderAttribute), "Attribute should not be counted in UA shadow DOM."); |
| }, "Attributes should not be counted in user agent shadow DOM."); |
| </script> |
| </body> |
