diff -r 000000000000 -r 6474c204b198 content/base/test/unit/test_xmlserializer.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/content/base/test/unit/test_xmlserializer.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,101 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+function xmlEncode(aFile, aFlags, aCharset) {
+    if(aFlags == undefined) aFlags = 0;
+    if(aCharset == undefined) aCharset = "UTF-8";
+
+    var doc = do_parse_document(aFile, "text/xml");
+
+    var encoder = Components.classes["@mozilla.org/layout/documentEncoder;1?type=text/xml"]
+                   .createInstance(nsIDocumentEncoder);
+    encoder.setCharset(aCharset);
+    encoder.init(doc, "text/xml", aFlags);
+    return encoder.encodeToString();
+}
+
+function run_test()
+{
+    var result, expected;
+    const de = Components.interfaces.nsIDocumentEncoder;
+
+    result = xmlEncode("1_original.xml", de.OutputLFLineBreak);
+    expected =loadContentFile("1_result.xml");
+    do_check_eq(expected, result);
+
+    result =  xmlEncode("2_original.xml", de.OutputLFLineBreak);
+    expected = loadContentFile("2_result_1.xml");
+    do_check_eq(expected, result);
+
+    result =  xmlEncode("2_original.xml", de.OutputCRLineBreak);
+    expected = expected.replace(/\n/g, "\r");
+    do_check_eq(expected, result);
+
+    result = xmlEncode("2_original.xml", de.OutputLFLineBreak | de.OutputCRLineBreak);
+    expected = expected.replace(/\r/mg, "\r\n");
+    do_check_eq(expected, result);
+
+    result =  xmlEncode("2_original.xml", de.OutputLFLineBreak | de.OutputFormatted);
+    expected = loadContentFile("2_result_2.xml");
+    do_check_eq(expected, result);
+
+    result =  xmlEncode("2_original.xml", de.OutputLFLineBreak | de.OutputFormatted | de.OutputWrap);
+    expected = loadContentFile("2_result_3.xml");
+    do_check_eq(expected, result);
+
+    result =  xmlEncode("2_original.xml", de.OutputLFLineBreak | de.OutputWrap);
+    expected = loadContentFile("2_result_4.xml");
+    do_check_eq(expected, result);
+
+    result =  xmlEncode("3_original.xml", de.OutputLFLineBreak | de.OutputFormatted | de.OutputWrap);
+    expected = loadContentFile("3_result.xml");
+    do_check_eq(expected, result);
+
+    result =  xmlEncode("3_original.xml", de.OutputLFLineBreak | de.OutputWrap);
+    expected = loadContentFile("3_result_2.xml");
+    do_check_eq(expected, result);
+
+    // tests on namespaces
+    var doc = do_parse_document("4_original.xml", "text/xml");
+
+    var encoder = Components.classes["@mozilla.org/layout/documentEncoder;1?type=text/xml"]
+                   .createInstance(nsIDocumentEncoder);
+    encoder.setCharset("UTF-8");
+    encoder.init(doc, "text/xml", de.OutputLFLineBreak);
+
+    result = encoder.encodeToString();
+    expected = loadContentFile("4_result_1.xml");
+    do_check_eq(expected, result);
+
+    encoder.setNode(doc.documentElement.childNodes[9]);
+    result = encoder.encodeToString();
+    expected = loadContentFile("4_result_2.xml");
+    do_check_eq(expected, result);
+
+    encoder.setNode(doc.documentElement.childNodes[7].childNodes[1]);
+    result = encoder.encodeToString();
+    expected = loadContentFile("4_result_3.xml");
+    do_check_eq(expected, result);
+
+    encoder.setNode(doc.documentElement.childNodes[11].childNodes[1]);
+    result = encoder.encodeToString();
+    expected = loadContentFile("4_result_4.xml");
+    do_check_eq(expected, result);
+
+    encoder.setCharset("UTF-8");
+    // it doesn't support this flags
+    encoder.init(doc, "text/xml",  de.OutputLFLineBreak | de.OutputFormatted | de.OutputWrap);
+    encoder.setWrapColumn(40);
+    result = encoder.encodeToString();
+    expected = loadContentFile("4_result_5.xml");
+    do_check_eq(expected, result);
+
+    encoder.init(doc, "text/xml",  de.OutputLFLineBreak | de.OutputWrap);
+    encoder.setWrapColumn(40);
+    result = encoder.encodeToString();
+    expected = loadContentFile("4_result_6.xml");
+    do_check_eq(expected, result);
+
+}