| <!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML//EN"> |
| <html> |
| <head> |
| <script src="../resources/accessibility-helper.js"></script> |
| <script src="../resources/js-test.js"></script> |
| </head> |
| <body> |
| |
| <progress id="progress" max="100" value="70"></progress> |
| |
| <script> |
| window.jsTestIsAsync = true; |
| var output = "This test ensures accessibility properly responds to dynamic changes in a progress element's value.\n\n"; |
| |
| // There are a few layouts that happen when the page loads — run the test in window.onload to wait them out before changing |
| // the progress value. If we change the progress value before these layouts occur, we pass the test no matter |
| // what (even if our implementation is wrong). This is because a top-level children changed notification causes |
| // the progress to be re-built with the correct value, making us pass the test on accident. |
| window.onload = () => { |
| if (!window.accessibilityController) |
| return; |
| |
| var progress = accessibilityController.accessibleElementById("progress"); |
| output += `#progress ${progress.stringValue}\n`; |
| setTimeout(async function() { |
| output += "\nUpdating #progress value to 50.\n"; |
| document.getElementById("progress").value = "50"; |
| |
| await waitFor(() => progress.stringValue.includes("50")); |
| output += `#progress ${progress.stringValue}\n`; |
| |
| debug(output); |
| finishJSTest(); |
| }, 0); |
| }; |
| </script> |
| </body> |
| </html> |
| |
