| <!DOCTYPE html> |
| <title>Encoding API: Byte-order marks</title> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script> |
| |
| var testCases = [ |
| { |
| encoding: 'utf-8', |
| bom: [0xEF, 0xBB, 0xBF], |
| bytes: [0x7A, 0xC2, 0xA2, 0xE6, 0xB0, 0xB4, 0xF0, 0x9D, 0x84, 0x9E, 0xF4, 0x8F, 0xBF, 0xBD] |
| }, |
| { |
| encoding: 'utf-16le', |
| bom: [0xff, 0xfe], |
| bytes: [0x7A, 0x00, 0xA2, 0x00, 0x34, 0x6C, 0x34, 0xD8, 0x1E, 0xDD, 0xFF, 0xDB, 0xFD, 0xDF] |
| }, |
| { |
| encoding: 'utf-16be', |
| bom: [0xfe, 0xff], |
| bytes: [0x00, 0x7A, 0x00, 0xA2, 0x6C, 0x34, 0xD8, 0x34, 0xDD, 0x1E, 0xDB, 0xFF, 0xDF, 0xFD] |
| } |
| ]; |
| |
| var string = 'z\xA2\u6C34\uD834\uDD1E\uDBFF\uDFFD'; // z, cent, CJK water, G-Clef, Private-use character |
| |
| testCases.forEach(function(t) { |
| test(function() { |
| |
| var decoder = new TextDecoder(t.encoding); |
| assert_equals(decoder.decode(new Uint8Array(t.bytes)), string, |
| 'Sequence without BOM should decode successfully'); |
| |
| assert_equals(decoder.decode(new Uint8Array(t.bom.concat(t.bytes))), string, |
| 'Sequence with BOM should decode successfully (with no BOM present in output)'); |
| |
| testCases.forEach(function(o) { |
| if (o === t) |
| return; |
| |
| assert_not_equals(decoder.decode(new Uint8Array(o.bom.concat(t.bytes))), string, |
| 'Mismatching BOM should not be ignored - treated as garbage bytes.'); |
| }); |
| |
| }, 'Byte-order marks: ' + t.encoding); |
| }); |
| |
| </script> |