web-nfc/NDEFReader-make-read-only-document-hidden-manual.https.html - external/w3c/web-platform-tests - Git at Google

 <!DOCTYPE html>
 <meta charset="utf-8">
 <meta name="timeout" content="long">
 <title>NDEFReader.makeReadOnly 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 ndef = new NDEFReader();
   const p1 = ndef.makeReadOnly();

   return await new Promise((resolve, reject) => {
     p1.then(() => {
       assert_false(document.hidden);
       resolve();
     }).catch(e => {
       reject();
     });
   });
 }, "Test NDEFReader.makeReadOnly operation should be suspended when document is not visible");

 </script>

 <p>Step1: switch the page to the background, then tap an NFC tag.</p>
 <p>Step2: switch back to the page, then tap the tag again.</p>
	<!DOCTYPE html>
	<meta charset="utf-8">
	<meta name="timeout" content="long">
	<title>NDEFReader.makeReadOnly 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 ndef = new NDEFReader();
	const p1 = ndef.makeReadOnly();

	return await new Promise((resolve, reject) => {
	p1.then(() => {
	assert_false(document.hidden);
	resolve();
	}).catch(e => {
	reject();
	});
	});
	}, "Test NDEFReader.makeReadOnly operation should be suspended when document is not visible");

	</script>

	<p>Step1: switch the page to the background, then tap an NFC tag.</p>
	<p>Step2: switch back to the page, then tap the tag again.</p>