src/third_party/web_platform_tests/encoding/textencoder-utf16-surrogates.html - cobalt - Git at Google

 <!DOCTYPE html>
 <title>Encoding API: USVString surrogate handling when encoding</title>
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
 <script>

 var bad = [
     {
         input: '\uD800',
         expected: '\uFFFD',
         name: 'lone surrogate lead'
     },
     {
         input: '\uDC00',
         expected: '\uFFFD',
         name: 'lone surrogate trail'
     },
     {
         input: '\uD800\u0000',
         expected: '\uFFFD\u0000',
         name: 'unmatched surrogate lead'
     },
     {
         input: '\uDC00\u0000',
         expected: '\uFFFD\u0000',
         name: 'unmatched surrogate trail'
     },
     {
         input: '\uDC00\uD800',
         expected: '\uFFFD\uFFFD',
         name: 'swapped surrogate pair'
     },
     {
         input: '\uD834\uDD1E',
         expected: '\uD834\uDD1E',
         name: 'properly encoded MUSICAL SYMBOL G CLEF (U+1D11E)'
     }
 ];

 var encoding = 'utf-8';

 bad.forEach(function(t) {
     test(function() {
         var encoded = new TextEncoder(encoding).encode(t.input);
         var decoded = new TextDecoder(encoding).decode(encoded);
         assert_equals(decoded, t.expected);
     }, 'USVString handling: ' + t.name);
 });

 test(function() {
     assert_equals(new TextEncoder(encoding).encode().length, 0, 'Should default to empty string');
 }, 'USVString default');

 </script>
	<!DOCTYPE html>
	<title>Encoding API: USVString surrogate handling when encoding</title>
	<script src="/resources/testharness.js"></script>
	<script src="/resources/testharnessreport.js"></script>
	<script>

	var bad = [
	{
	input: '\uD800',
	expected: '\uFFFD',
	name: 'lone surrogate lead'
	},
	{
	input: '\uDC00',
	expected: '\uFFFD',
	name: 'lone surrogate trail'
	},
	{
	input: '\uD800\u0000',
	expected: '\uFFFD\u0000',
	name: 'unmatched surrogate lead'
	},
	{
	input: '\uDC00\u0000',
	expected: '\uFFFD\u0000',
	name: 'unmatched surrogate trail'
	},
	{
	input: '\uDC00\uD800',
	expected: '\uFFFD\uFFFD',
	name: 'swapped surrogate pair'
	},
	{
	input: '\uD834\uDD1E',
	expected: '\uD834\uDD1E',
	name: 'properly encoded MUSICAL SYMBOL G CLEF (U+1D11E)'
	}
	];

	var encoding = 'utf-8';

	bad.forEach(function(t) {
	test(function() {
	var encoded = new TextEncoder(encoding).encode(t.input);
	var decoded = new TextDecoder(encoding).decode(encoded);
	assert_equals(decoded, t.expected);
	}, 'USVString handling: ' + t.name);
	});

	test(function() {
	assert_equals(new TextEncoder(encoding).encode().length, 0, 'Should default to empty string');
	}, 'USVString default');

	</script>