unicode.html (1780B)
1 <!DOCTYPE html> 2 <meta charset="utf-8"> 3 <title>Blob/Unicode interaction: normalization and encoding</title> 4 <script src="/resources/testharness.js"></script> 5 <script src="/resources/testharnessreport.js"></script> 6 <script> 7 'use strict'; 8 9 const OMICRON_WITH_OXIA = '\u1F79'; // NFC normalized to U+3CC 10 const CONTAINS_UNPAIRED_SURROGATES = 'abc\uDC00def\uD800ghi'; 11 const REPLACED = 'abc\uFFFDdef\uFFFDghi'; 12 13 function readBlobAsPromise(blob) { 14 return new Promise((resolve, reject) => { 15 const reader = new FileReader(); 16 reader.readAsText(blob); 17 reader.onload = () => resolve(reader.result); 18 reader.onerror = () => reject(reader.error); 19 }); 20 } 21 22 promise_test(async t => { 23 const blob = new Blob([OMICRON_WITH_OXIA]); 24 const result = await readBlobAsPromise(blob); 25 assert_equals(result, OMICRON_WITH_OXIA, 'String should not be normalized'); 26 }, 'Test that strings are not NFC normalized by Blob constructor'); 27 28 promise_test(async t => { 29 const file = new File([OMICRON_WITH_OXIA], 'name'); 30 const result = await readBlobAsPromise(file); 31 assert_equals(result, OMICRON_WITH_OXIA, 'String should not be normalized'); 32 }, 'Test that strings are not NFC normalized by File constructor'); 33 34 promise_test(async t => { 35 const blob = new Blob([CONTAINS_UNPAIRED_SURROGATES]); 36 const result = await readBlobAsPromise(blob); 37 assert_equals(result, REPLACED, 'Unpaired surrogates should be replaced.'); 38 }, 'Test that unpaired surrogates are replaced by Blob constructor'); 39 40 promise_test(async t => { 41 const file = new File([CONTAINS_UNPAIRED_SURROGATES], 'name'); 42 const result = await readBlobAsPromise(file); 43 assert_equals(result, REPLACED, 'Unpaired surrogates should be replaced.'); 44 }, 'Test that unpaired surrogates are replaced by File constructor'); 45 46 </script>