| Joshua Bell | b8e6ff6 | 2017-12-07 19:24:57 | [diff] [blame] | 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> |
