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  • Committer: Bazaar Package Importer
  • Author(s): Alexander Sack
  • Date: 2009-03-27 11:01:58 UTC
  • mfrom: (1.1.18 upstream)
  • Revision ID: james.westby@ubuntu.com-20090327110158-jncj3np2zz3kjwit
Tags: 1.9.0.8+nobinonly-0ubuntu1
* security/stability v1.9.0.8 (FIREFOX_3_0_8_RELEASE)
  - see USN-745-1

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mozilla/intl/uconv/tests/unit/test_bug317216.js
 
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/* Test case for bug 317216
 
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 *
 
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 * Uses nsIConverterInputStream to decode UTF-16 text with valid surrogate
 
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 * pairs and lone surrogate characters
 
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 *
 
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 * Sample text is: "A" in Mathematical Bold Capitals (U+1D400)
 
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 *
 
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 * The test uses buffers of 4 different lengths to test end of buffer in mid-
 
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 * UTF16 character and mid-surrogate pair
 
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 */
 
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const test = [
 
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// 0: Valid surrogate pair
 
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              ["%00%2D%00%2D%D8%35%DC%20%00%2D%00%2D",
 
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//    expected: surrogate pair
 
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               "--\uD835\uDC20--"],
 
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// 1: Lone high surrogate
 
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              ["%00%2D%00%2D%D8%35%00%2D%00%2D",
 
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//    expected: one replacement char
 
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               "--\uFFFD--"],
 
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// 2: Lone low surrogate
 
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              ["%00%2D%00%2D%DC%20%00%2D%00%2D",
 
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//    expected: one replacement char
 
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               "--\uFFFD--"],
 
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// 3: Two high surrogates
 
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              ["%00%2D%00%2D%D8%35%D8%35%00%2D%00%2D",
 
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//    expected: two replacement chars
 
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               "--\uFFFD\uFFFD--"],
 
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// 4: Two low surrogates
 
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              ["%00%2D%00%2D%DC%20%DC%20%00%2D%00%2D",
 
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//    expected: two replacement chars
 
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              "--\uFFFD\uFFFD--"],
 
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// 5: Low surrogate followed by high surrogate
 
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              ["%00%2D%00%2D%DC%20%D8%35%00%2D%00%2D",
 
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//    expected: two replacement chars
 
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               "--\uFFFD\uFFFD--"],
 
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// 6: Lone high surrogate followed by valid surrogate pair
 
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              ["%00%2D%00%2D%D8%35%D8%35%DC%20%00%2D%00%2D",
 
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//    expected: replacement char followed by surrogate pair
 
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               "--\uFFFD\uD835\uDC20--"],
 
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// 7: Lone low surrogate followed by valid surrogate pair
 
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              ["%00%2D%00%2D%DC%20%D8%35%DC%20%00%2D%00%2D",
 
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//    expected: replacement char followed by surrogate pair
 
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               "--\uFFFD\uD835\uDC20--"],
 
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// 8: Valid surrogate pair followed by lone high surrogate
 
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              ["%00%2D%00%2D%D8%35%DC%20%D8%35%00%2D%00%2D",
 
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//    expected: surrogate pair followed by replacement char
 
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               "--\uD835\uDC20\uFFFD--"],
 
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// 9: Valid surrogate pair followed by lone low surrogate
 
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              ["%00%2D%00%2D%D8%35%DC%20%DC%20%00%2D%00%2D",
 
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//    expected: surrogate pair followed by replacement char
 
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               "--\uD835\uDC20\uFFFD--"],
 
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// 10: Lone high surrogate at the end of the input
 
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              ["%00%2D%00%2D%00%2D%00%2D%D8%35%",
 
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//    expected: nothing
 
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               "----"],
 
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// 11: Half code unit at the end of the input
 
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              ["%00%2D%00%2D%00%2D%00%2D%D8",
 
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//    expected: nothing
 
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              "----"]];
 
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const IOService = Components.Constructor("@mozilla.org/network/io-service;1",
 
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                                         "nsIIOService");
 
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const ConverterInputStream =
 
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      Components.Constructor("@mozilla.org/intl/converter-input-stream;1",
 
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                             "nsIConverterInputStream",
 
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                             "init");
 
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const ios = new IOService();
 
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function testCase(testText, expectedText, bufferLength, charset)
 
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{
 
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  var dataURI = "data:text/plain;charset=" + charset + "," + testText;
 
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  var channel = ios.newChannel(dataURI, "", null);
 
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  var testInputStream = channel.open();
 
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  var testConverter = new ConverterInputStream(testInputStream,
 
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                                               charset,
 
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                                               bufferLength,
 
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                                               0xFFFD);
 
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  if (!(testConverter instanceof
 
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        Components.interfaces.nsIUnicharLineInputStream))
 
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    throw "not line input stream";
 
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  var outStr = "";
 
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  var more;
 
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  do {
 
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    // read the line and check for eof
 
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    var line = {};
 
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    more = testConverter.readLine(line);
 
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    outStr += line.value;
 
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  } while (more);
 
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  // escape the strings before comparing for better readability
 
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  do_check_eq(escape(outStr), escape(expectedText));
 
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}
 
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// Byte-swap %-encoded utf-16
 
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function flip(str) { return str.replace(/(%..)(%..)/g, "$2$1"); }
 
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function run_test()
 
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{
 
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  for (var i = 0; i < 12; ++i) {
 
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    for (var bufferLength = 4; bufferLength < 8; ++ bufferLength) {
 
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      testCase(test[i][0], test[i][1], bufferLength, "UTF-16BE");
 
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      testCase(flip(test[i][0]), test[i][1], bufferLength, "UTF-16LE");
 
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    }
 
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  }
 
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}