diff -r 000000000000 -r 6474c204b198 intl/uconv/tests/unit/test_bug90411.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/intl/uconv/tests/unit/test_bug90411.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,67 @@
+/* Test case for bug 90411
+ *
+ * Uses nsIConverterInputStream to decode GB_HK test.
+ *
+ * Sample text is: 
+ * 问他谁是傻瓜了5分钟。但是，他谁不要求仍然是一个傻瓜永远
+ * 我听见 我忘记; 我看见 我记住; 我做 我了解。
+ */
+
+const sample = "~{NJK{K-JGI59OAK~}5~{7VVS!%235+JG%23,K{K-2;R*GsHTH;JGR;8vI59OS@T6!%23~} ~{NRL}<{~} ~{NRM|<G~}; ~{NR?4<{~} ~{NR<GW!~}; ~{NRWv~} ~{NRAK=b!%23~}";
+
+const expected = "\u95EE\u4ED6\u8C01\u662F\u50BB\u74DC\u4E865\u5206\u949F\u3002\u4F46\u662F\uFF0C\u4ED6\u8C01\u4E0D\u8981\u6C42\u4ECD\u7136\u662F\u4E00\u4E2A\u50BB\u74DC\u6C38\u8FDC\u3002 \u6211\u542C\u89C1 \u6211\u5FD8\u8BB0; \u6211\u770B\u89C1 \u6211\u8BB0\u4F4F; \u6211\u505A \u6211\u4E86\u89E3\u3002"; 
+
+const charset="HZ-GB-2312";
+
+function testCase(bufferLength)
+{
+  var dataURI = "data:text/plain;charset=" + charset + "," + sample;
+
+  var IOService = Components.Constructor("@mozilla.org/network/io-service;1",
+					 "nsIIOService");
+  var ConverterInputStream =
+      Components.Constructor("@mozilla.org/intl/converter-input-stream;1",
+			     "nsIConverterInputStream",
+			     "init");
+
+  var ios = new IOService();
+  var channel = ios.newChannel(dataURI, "", null);
+  var testInputStream = channel.open();
+  var testConverter = new ConverterInputStream(testInputStream,
+					       charset,
+					       bufferLength,
+					       0xFFFD);
+
+  if (!(testConverter instanceof
+	Components.interfaces.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);
+
+  if (outStr != expected) {
+    dump("Failed with bufferLength = " + bufferLength + "\n");
+    if (outStr.length == expected.length) {
+      for (i = 0; i < outStr.length; ++i) {
+	if (outStr.charCodeAt(i) != expected.charCodeAt(i)) {
+	  dump(i + ": " + outStr.charCodeAt(i).toString(16) + " != " + expected.charCodeAt(i).toString(16) + "\n");
+	}
+      }
+    }
+  }
+
+  // escape the strings before comparing for better readability
+  do_check_eq(escape(outStr), escape(expected));
+}
+
+function run_test()
+{
+  testCase(32);
+  testCase(33);
+}