1 files changed, 46 insertions, 0 deletions
diff --git a/comm/mailnews/intl/test/unit/head_CharsetConversionTests.js b/comm/mailnews/intl/test/unit/head_CharsetConversionTests.js
new file mode 100644
index 0000000000..f1ae6c7155
--- /dev/null
+++ b/comm/mailnews/intl/test/unit/head_CharsetConversionTests.js
@@ -0,0 +1,46 @@
+var CC = Components.Constructor;
+
+function CreateScriptableConverter() {
+  var ScriptableUnicodeConverter = CC(
+    "@mozilla.org/intl/scriptableunicodeconverter",
+    "nsIScriptableUnicodeConverter"
+  );
+
+  return new ScriptableUnicodeConverter();
+}
+
+function checkDecode(converter, charset, inText, expectedText) {
+  let manager = Cc["@mozilla.org/charset-converter-manager;1"].getService(
+    Ci.nsICharsetConverterManager
+  );
+
+  try {
+    converter.charset = manager.getCharsetAlias(charset);
+  } catch (e) {
+    converter.charset = "iso-8859-1";
+  }
+
+  dump("testing decoding from " + charset + " to Unicode.\n");
+  try {
+    var outText = converter.ConvertToUnicode(inText) + converter.Finish();
+  } catch (e) {
+    outText = "\ufffd";
+  }
+  Assert.equal(outText, expectedText);
+}
+
+function checkEncode(converter, charset, inText, expectedText) {
+  let manager = Cc["@mozilla.org/charset-converter-manager;1"].getService(
+    Ci.nsICharsetConverterManager
+  );
+
+  try {
+    converter.charset = manager.getCharsetAlias(charset);
+  } catch (e) {
+    converter.charset = "iso-8859-1";
+  }
+
+  dump("testing encoding from Unicode to " + charset + "\n");
+  var outText = converter.ConvertFromUnicode(inText) + converter.Finish();
+  Assert.equal(outText, expectedText);
+}