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1 <!DOCTYPE html> | |
2 <title>Encoding API: Byte-order marks</title> | |
3 <script src="../../../resources/testharness.js"></script> | |
4 <script src="../../../resources/testharnessreport.js"></script> | |
5 <script> | |
6 | |
7 var testCases = [ | |
8 { | |
9 encoding: 'utf-8', | |
10 bom: [0xEF, 0xBB, 0xBF], | |
11 bytes: [0x7A, 0xC2, 0xA2, 0xE6, 0xB0, 0xB4, 0xF0, 0x9D, 0x84, 0x9E, 0xF4
, 0x8F, 0xBF, 0xBD] | |
12 }, | |
13 { | |
14 encoding: 'utf-16le', | |
15 bom: [0xff, 0xfe], | |
16 bytes: [0x7A, 0x00, 0xA2, 0x00, 0x34, 0x6C, 0x34, 0xD8, 0x1E, 0xDD, 0xFF
, 0xDB, 0xFD, 0xDF] | |
17 }, | |
18 { | |
19 encoding: 'utf-16be', | |
20 bom: [0xfe, 0xff], | |
21 bytes: [0x00, 0x7A, 0x00, 0xA2, 0x6C, 0x34, 0xD8, 0x34, 0xDD, 0x1E, 0xDB
, 0xFF, 0xDF, 0xFD] | |
22 } | |
23 ]; | |
24 | |
25 var string = 'z\xA2\u6C34\uD834\uDD1E\uDBFF\uDFFD'; // z, cent, CJK water, G-Cle
f, Private-use character | |
26 | |
27 testCases.forEach(function(t) { | |
28 test(function() { | |
29 | |
30 var decoder = new TextDecoder(t.encoding); | |
31 assert_equals(decoder.decode(new Uint8Array(t.bytes)), string, | |
32 'Sequence without BOM should decode successfully'); | |
33 | |
34 assert_equals(decoder.decode(new Uint8Array(t.bom.concat(t.bytes))), str
ing, | |
35 'Sequence with BOM should decode successfully (with no BOM
present in output)'); | |
36 | |
37 testCases.forEach(function(o) { | |
38 if (o === t) | |
39 return; | |
40 | |
41 assert_not_equals(decoder.decode(new Uint8Array(o.bom.concat(t.bytes
))), string, | |
42 'Mismatching BOM should not be ignored - treated a
s garbage bytes.'); | |
43 }); | |
44 | |
45 }, 'Byte-order marks: ' + t.encoding); | |
46 }); | |
47 | |
48 </script> | |
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