| <!DOCTYPE html> |
| <meta charset="utf-8"> |
| <meta name="timeout" content="long"> |
| <title>NDEFReader.onreading respect page visibility changes</title> |
| <link rel="help" href="https://w3c.github.io/web-nfc/#visible-document"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script> |
| |
| promise_test(async t => { |
| const reader = new NDEFReader(); |
| const readerWatcher = new EventWatcher(t, reader, ["reading", "error"]); |
| const promise = readerWatcher.wait_for("reading").then(event => { |
| if (document.hidden) reject(); |
| resolve(); |
| }); |
| await reader.scan(); |
| await promise; |
| }, "Test NDEFReader.onreading is not fired when document is hidden"); |
| |
| </script> |
| |
| <p>Step1: switch the page to the background, then tap a formatted NFC tag.</p> |
| <p>Step2: switch back to the page, then tap the tag again.</p> |
