textdecoder-fatal.any.js (4722B)
1 // META: global=window,dedicatedworker,shadowrealm 2 // META: title=Encoding API: Fatal flag 3 4 var bad = [ 5 { encoding: 'utf-8', input: [0xFF], name: 'invalid code' }, 6 { encoding: 'utf-8', input: [0xC0], name: 'ends early' }, 7 { encoding: 'utf-8', input: [0xE0], name: 'ends early 2' }, 8 { encoding: 'utf-8', input: [0xC0, 0x00], name: 'invalid trail' }, 9 { encoding: 'utf-8', input: [0xC0, 0xC0], name: 'invalid trail 2' }, 10 { encoding: 'utf-8', input: [0xE0, 0x00], name: 'invalid trail 3' }, 11 { encoding: 'utf-8', input: [0xE0, 0xC0], name: 'invalid trail 4' }, 12 { encoding: 'utf-8', input: [0xE0, 0x80, 0x00], name: 'invalid trail 5' }, 13 { encoding: 'utf-8', input: [0xE0, 0x80, 0xC0], name: 'invalid trail 6' }, 14 { encoding: 'utf-8', input: [0xFC, 0x80, 0x80, 0x80, 0x80, 0x80], name: '> 0x10FFFF' }, 15 { encoding: 'utf-8', input: [0xFE, 0x80, 0x80, 0x80, 0x80, 0x80], name: 'obsolete lead byte' }, 16 17 // Overlong encodings 18 { encoding: 'utf-8', input: [0xC0, 0x80], name: 'overlong U+0000 - 2 bytes' }, 19 { encoding: 'utf-8', input: [0xE0, 0x80, 0x80], name: 'overlong U+0000 - 3 bytes' }, 20 { encoding: 'utf-8', input: [0xF0, 0x80, 0x80, 0x80], name: 'overlong U+0000 - 4 bytes' }, 21 { encoding: 'utf-8', input: [0xF8, 0x80, 0x80, 0x80, 0x80], name: 'overlong U+0000 - 5 bytes' }, 22 { encoding: 'utf-8', input: [0xFC, 0x80, 0x80, 0x80, 0x80, 0x80], name: 'overlong U+0000 - 6 bytes' }, 23 24 { encoding: 'utf-8', input: [0xC1, 0xBF], name: 'overlong U+007F - 2 bytes' }, 25 { encoding: 'utf-8', input: [0xE0, 0x81, 0xBF], name: 'overlong U+007F - 3 bytes' }, 26 { encoding: 'utf-8', input: [0xF0, 0x80, 0x81, 0xBF], name: 'overlong U+007F - 4 bytes' }, 27 { encoding: 'utf-8', input: [0xF8, 0x80, 0x80, 0x81, 0xBF], name: 'overlong U+007F - 5 bytes' }, 28 { encoding: 'utf-8', input: [0xFC, 0x80, 0x80, 0x80, 0x81, 0xBF], name: 'overlong U+007F - 6 bytes' }, 29 30 { encoding: 'utf-8', input: [0xE0, 0x9F, 0xBF], name: 'overlong U+07FF - 3 bytes' }, 31 { encoding: 'utf-8', input: [0xF0, 0x80, 0x9F, 0xBF], name: 'overlong U+07FF - 4 bytes' }, 32 { encoding: 'utf-8', input: [0xF8, 0x80, 0x80, 0x9F, 0xBF], name: 'overlong U+07FF - 5 bytes' }, 33 { encoding: 'utf-8', input: [0xFC, 0x80, 0x80, 0x80, 0x9F, 0xBF], name: 'overlong U+07FF - 6 bytes' }, 34 35 { encoding: 'utf-8', input: [0xF0, 0x8F, 0xBF, 0xBF], name: 'overlong U+FFFF - 4 bytes' }, 36 { encoding: 'utf-8', input: [0xF8, 0x80, 0x8F, 0xBF, 0xBF], name: 'overlong U+FFFF - 5 bytes' }, 37 { encoding: 'utf-8', input: [0xFC, 0x80, 0x80, 0x8F, 0xBF, 0xBF], name: 'overlong U+FFFF - 6 bytes' }, 38 39 { encoding: 'utf-8', input: [0xF8, 0x84, 0x8F, 0xBF, 0xBF], name: 'overlong U+10FFFF - 5 bytes' }, 40 { encoding: 'utf-8', input: [0xFC, 0x80, 0x84, 0x8F, 0xBF, 0xBF], name: 'overlong U+10FFFF - 6 bytes' }, 41 42 // UTF-16 surrogates encoded as code points in UTF-8 43 { encoding: 'utf-8', input: [0xED, 0xA0, 0x80], name: 'lead surrogate' }, 44 { encoding: 'utf-8', input: [0xED, 0xB0, 0x80], name: 'trail surrogate' }, 45 { encoding: 'utf-8', input: [0xED, 0xA0, 0x80, 0xED, 0xB0, 0x80], name: 'surrogate pair' }, 46 47 { encoding: 'utf-16le', input: [0x00], name: 'truncated code unit' }, 48 // Mismatched UTF-16 surrogates are exercised in utf16-surrogates.html 49 50 // FIXME: Add legacy encoding cases 51 ]; 52 53 bad.forEach(function(t) { 54 test(function() { 55 assert_throws_js(TypeError, function() { 56 new TextDecoder(t.encoding, {fatal: true}).decode(new Uint8Array(t.input)) 57 }); 58 }, 'Fatal flag: ' + t.encoding + ' - ' + t.name); 59 }); 60 61 test(function() { 62 assert_true('fatal' in new TextDecoder(), 'The fatal attribute should exist on TextDecoder.'); 63 assert_equals(typeof new TextDecoder().fatal, 'boolean', 'The type of the fatal attribute should be boolean.'); 64 assert_false(new TextDecoder().fatal, 'The fatal attribute should default to false.'); 65 assert_true(new TextDecoder('utf-8', {fatal: true}).fatal, 'The fatal attribute can be set using an option.'); 66 67 }, 'The fatal attribute of TextDecoder'); 68 69 test(() => { 70 const bytes = new Uint8Array([226, 153, 165]); 71 const decoder = new TextDecoder('utf-8', {fatal: true}); 72 assert_equals(decoder.decode(new DataView(bytes.buffer, 0, 3)), 73 '♥', 74 'decode() should decode full sequence'); 75 assert_throws_js(TypeError, 76 () => decoder.decode(new DataView(bytes.buffer, 0, 2)), 77 'decode() should throw on incomplete sequence'); 78 assert_equals(decoder.decode(new DataView(bytes.buffer, 0, 3)), 79 '♥', 80 'decode() should not throw on subsequent call'); 81 }, 'Error seen with fatal does not prevent future decodes');