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authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
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Add m-esr52 at 52.6.0
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diff --git a/intl/uconv/tests/unit/test_bug317216.js b/intl/uconv/tests/unit/test_bug317216.js
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+/* Test case for bug 317216
+ *
+ * Uses nsIConverterInputStream to decode UTF-16 text with valid surrogate
+ * pairs and lone surrogate characters
+ *
+ * Sample text is: "A" in Mathematical Bold Capitals (U+1D400)
+ *
+ * The test uses buffers of 4 different lengths to test end of buffer in mid-
+ * UTF16 character and mid-surrogate pair
+ */
+
+var Ci = Components.interfaces;
+var Cu = Components.utils;
+
+Cu.import("resource://gre/modules/NetUtil.jsm");
+
+const test = [
+// 0: Valid surrogate pair
+ ["%D8%35%DC%20%00%2D%00%2D",
+// expected: surrogate pair
+ "\uD835\uDC20--"],
+// 1: Lone high surrogate
+ ["%D8%35%00%2D%00%2D",
+// expected: one replacement char
+ "\uFFFD--"],
+// 2: Lone low surrogate
+ ["%DC%20%00%2D%00%2D",
+// expected: one replacement char
+ "\uFFFD--"],
+// 3: Two high surrogates
+ ["%D8%35%D8%35%00%2D%00%2D",
+// expected: two replacement chars
+ "\uFFFD\uFFFD--"],
+// 4: Two low surrogates
+ ["%DC%20%DC%20%00%2D%00%2D",
+// expected: two replacement chars
+ "\uFFFD\uFFFD--"],
+// 5: Low surrogate followed by high surrogate
+ ["%DC%20%D8%35%00%2D%00%2D",
+// expected: two replacement chars
+ "\uFFFD\uFFFD--"],
+// 6: Lone high surrogate followed by valid surrogate pair
+ ["%D8%35%D8%35%DC%20%00%2D%00%2D",
+// expected: replacement char followed by surrogate pair
+ "\uFFFD\uD835\uDC20--"],
+// 7: Lone low surrogate followed by valid surrogate pair
+ ["%DC%20%D8%35%DC%20%00%2D%00%2D",
+// expected: replacement char followed by surrogate pair
+ "\uFFFD\uD835\uDC20--"],
+// 8: Valid surrogate pair followed by lone high surrogate
+ ["%D8%35%DC%20%D8%35%00%2D%00%2D",
+// expected: surrogate pair followed by replacement char
+ "\uD835\uDC20\uFFFD--"],
+// 9: Valid surrogate pair followed by lone low surrogate
+ ["%D8%35%DC%20%DC%20%00%2D%00%2D",
+// expected: surrogate pair followed by replacement char
+ "\uD835\uDC20\uFFFD--"],
+// 10: Lone high surrogate at the end of the input
+ ["%D8%35%",
+// expected: nothing
+ ""],
+// 11: Half code unit at the end of the input
+ ["%D8",
+// expected: nothing
+ ""]];
+
+const IOService = Components.Constructor("@mozilla.org/network/io-service;1",
+ "nsIIOService");
+const ConverterInputStream =
+ Components.Constructor("@mozilla.org/intl/converter-input-stream;1",
+ "nsIConverterInputStream",
+ "init");
+const ios = new IOService();
+
+function testCase(testText, expectedText, bufferLength, charset)
+{
+ var dataURI = "data:text/plain;charset=" + charset + "," + testText;
+ var channel = NetUtil.newChannel({uri: dataURI, loadUsingSystemPrincipal: true});
+ var testInputStream = channel.open2();
+ var testConverter = new ConverterInputStream(testInputStream,
+ charset,
+ bufferLength,
+ 0xFFFD);
+
+ if (!(testConverter instanceof
+ Ci.nsIUnicharLineInputStream))
+ throw "not line input stream";
+
+ var outStr = "";
+ var more;
+ do {
+ // read the line and check for eof
+ var line = {};
+ more = testConverter.readLine(line);
+ outStr += line.value;
+ } while (more);
+
+ // escape the strings before comparing for better readability
+ do_check_eq(escape(outStr), escape(expectedText));
+}
+
+// Add 32 dummy characters to the test text to work around the minimum buffer
+// size of an ns*Buffer
+const MINIMUM_BUFFER_SIZE=32;
+function padBytes(str)
+{
+ var padding = "";
+ for (var i = 0; i < MINIMUM_BUFFER_SIZE; ++i) {
+ padding += "%00%2D";
+ }
+ return padding + str;
+}
+
+function padUnichars(str)
+{
+ var padding = "";
+ for (var i = 0; i < MINIMUM_BUFFER_SIZE; ++i) {
+ padding += "-";
+ }
+ return padding + str;
+}
+
+// Byte-swap %-encoded utf-16
+function flip(str) { return str.replace(/(%..)(%..)/g, "$2$1"); }
+
+function run_test()
+{
+ for (var i = 0; i < 12; ++i) {
+ for (var bufferLength = MINIMUM_BUFFER_SIZE;
+ bufferLength < MINIMUM_BUFFER_SIZE + 4;
+ ++ bufferLength) {
+ var testText = padBytes(test[i][0]);
+ var expectedText = padUnichars(test[i][1]);
+ testCase(testText, expectedText, bufferLength, "UTF-16BE");
+ testCase(flip(testText), expectedText, bufferLength, "UTF-16LE");
+ }
+ }
+}