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comparison: intl/uconv/tests/unit/test_bug317216.js
intl/uconv/tests/unit/test_bug317216.js
- branch
- TOR_BUG_3246
- changeset 7
- 129ffea94266
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| -1:000000000000 | 0:f7c8e3709ec5 |
|---|---|
| 1 /* Test case for bug 317216 | |
| 2 * | |
| 3 * Uses nsIConverterInputStream to decode UTF-16 text with valid surrogate | |
| 4 * pairs and lone surrogate characters | |
| 5 * | |
| 6 * Sample text is: "A" in Mathematical Bold Capitals (U+1D400) | |
| 7 * | |
| 8 * The test uses buffers of 4 different lengths to test end of buffer in mid- | |
| 9 * UTF16 character and mid-surrogate pair | |
| 10 */ | |
| 11 | |
| 12 const test = [ | |
| 13 // 0: Valid surrogate pair | |
| 14 ["%D8%35%DC%20%00%2D%00%2D", | |
| 15 // expected: surrogate pair | |
| 16 "\uD835\uDC20--"], | |
| 17 // 1: Lone high surrogate | |
| 18 ["%D8%35%00%2D%00%2D", | |
| 19 // expected: one replacement char | |
| 20 "\uFFFD--"], | |
| 21 // 2: Lone low surrogate | |
| 22 ["%DC%20%00%2D%00%2D", | |
| 23 // expected: one replacement char | |
| 24 "\uFFFD--"], | |
| 25 // 3: Two high surrogates | |
| 26 ["%D8%35%D8%35%00%2D%00%2D", | |
| 27 // expected: two replacement chars | |
| 28 "\uFFFD\uFFFD--"], | |
| 29 // 4: Two low surrogates | |
| 30 ["%DC%20%DC%20%00%2D%00%2D", | |
| 31 // expected: two replacement chars | |
| 32 "\uFFFD\uFFFD--"], | |
| 33 // 5: Low surrogate followed by high surrogate | |
| 34 ["%DC%20%D8%35%00%2D%00%2D", | |
| 35 // expected: two replacement chars | |
| 36 "\uFFFD\uFFFD--"], | |
| 37 // 6: Lone high surrogate followed by valid surrogate pair | |
| 38 ["%D8%35%D8%35%DC%20%00%2D%00%2D", | |
| 39 // expected: replacement char followed by surrogate pair | |
| 40 "\uFFFD\uD835\uDC20--"], | |
| 41 // 7: Lone low surrogate followed by valid surrogate pair | |
| 42 ["%DC%20%D8%35%DC%20%00%2D%00%2D", | |
| 43 // expected: replacement char followed by surrogate pair | |
| 44 "\uFFFD\uD835\uDC20--"], | |
| 45 // 8: Valid surrogate pair followed by lone high surrogate | |
| 46 ["%D8%35%DC%20%D8%35%00%2D%00%2D", | |
| 47 // expected: surrogate pair followed by replacement char | |
| 48 "\uD835\uDC20\uFFFD--"], | |
| 49 // 9: Valid surrogate pair followed by lone low surrogate | |
| 50 ["%D8%35%DC%20%DC%20%00%2D%00%2D", | |
| 51 // expected: surrogate pair followed by replacement char | |
| 52 "\uD835\uDC20\uFFFD--"], | |
| 53 // 10: Lone high surrogate at the end of the input | |
| 54 ["%D8%35%", | |
| 55 // expected: nothing | |
| 56 ""], | |
| 57 // 11: Half code unit at the end of the input | |
| 58 ["%D8", | |
| 59 // expected: nothing | |
| 60 ""]]; | |
| 61 | |
| 62 const IOService = Components.Constructor("@mozilla.org/network/io-service;1", | |
| 63 "nsIIOService"); | |
| 64 const ConverterInputStream = | |
| 65 Components.Constructor("@mozilla.org/intl/converter-input-stream;1", | |
| 66 "nsIConverterInputStream", | |
| 67 "init"); | |
| 68 const ios = new IOService(); | |
| 69 | |
| 70 function testCase(testText, expectedText, bufferLength, charset) | |
| 71 { | |
| 72 var dataURI = "data:text/plain;charset=" + charset + "," + testText; | |
| 73 | |
| 74 var channel = ios.newChannel(dataURI, "", null); | |
| 75 var testInputStream = channel.open(); | |
| 76 var testConverter = new ConverterInputStream(testInputStream, | |
| 77 charset, | |
| 78 bufferLength, | |
| 79 0xFFFD); | |
| 80 | |
| 81 if (!(testConverter instanceof | |
| 82 Components.interfaces.nsIUnicharLineInputStream)) | |
| 83 throw "not line input stream"; | |
| 84 | |
| 85 var outStr = ""; | |
| 86 var more; | |
| 87 do { | |
| 88 // read the line and check for eof | |
| 89 var line = {}; | |
| 90 more = testConverter.readLine(line); | |
| 91 outStr += line.value; | |
| 92 } while (more); | |
| 93 | |
| 94 // escape the strings before comparing for better readability | |
| 95 do_check_eq(escape(outStr), escape(expectedText)); | |
| 96 } | |
| 97 | |
| 98 // Add 32 dummy characters to the test text to work around the minimum buffer | |
| 99 // size of an ns*Buffer | |
| 100 const MINIMUM_BUFFER_SIZE=32; | |
| 101 function padBytes(str) | |
| 102 { | |
| 103 var padding = ""; | |
| 104 for (var i = 0; i < MINIMUM_BUFFER_SIZE; ++i) { | |
| 105 padding += "%00%2D"; | |
| 106 } | |
| 107 return padding + str; | |
| 108 } | |
| 109 | |
| 110 function padUnichars(str) | |
| 111 { | |
| 112 var padding = ""; | |
| 113 for (var i = 0; i < MINIMUM_BUFFER_SIZE; ++i) { | |
| 114 padding += "-"; | |
| 115 } | |
| 116 return padding + str; | |
| 117 } | |
| 118 | |
| 119 // Byte-swap %-encoded utf-16 | |
| 120 function flip(str) { return str.replace(/(%..)(%..)/g, "$2$1"); } | |
| 121 | |
| 122 function run_test() | |
| 123 { | |
| 124 for (var i = 0; i < 12; ++i) { | |
| 125 for (var bufferLength = MINIMUM_BUFFER_SIZE; | |
| 126 bufferLength < MINIMUM_BUFFER_SIZE + 4; | |
| 127 ++ bufferLength) { | |
| 128 var testText = padBytes(test[i][0]); | |
| 129 var expectedText = padUnichars(test[i][1]); | |
| 130 testCase(testText, expectedText, bufferLength, "UTF-16BE"); | |
| 131 testCase(flip(testText), expectedText, bufferLength, "UTF-16LE"); | |
| 132 } | |
| 133 } | |
| 134 } |
