1 files changed, 71 insertions, 0 deletions
diff --git a/netwerk/test/unit/test_bug396389.js b/netwerk/test/unit/test_bug396389.js
new file mode 100644
index 0000000000..5095a77bd4
--- /dev/null
+++ b/netwerk/test/unit/test_bug396389.js
@@ -0,0 +1,71 @@
+"use strict";
+
+function round_trip(uri) {
+  var objectOutStream = Cc["@mozilla.org/binaryoutputstream;1"].createInstance(
+    Ci.nsIObjectOutputStream
+  );
+  var pipe = Cc["@mozilla.org/pipe;1"].createInstance(Ci.nsIPipe);
+  pipe.init(false, false, 0, 0xffffffff, null);
+  objectOutStream.setOutputStream(pipe.outputStream);
+  objectOutStream.writeCompoundObject(uri, Ci.nsISupports, true);
+  objectOutStream.close();
+
+  var objectInStream = Cc["@mozilla.org/binaryinputstream;1"].createInstance(
+    Ci.nsIObjectInputStream
+  );
+  objectInStream.setInputStream(pipe.inputStream);
+  return objectInStream.readObject(true).QueryInterface(Ci.nsIURI);
+}
+
+var prefData = [
+  {
+    name: "network.IDN_show_punycode",
+    newVal: false,
+  },
+  {
+    name: "network.IDN.whitelist.ch",
+    newVal: true,
+  },
+];
+
+function run_test() {
+  var ios = Cc["@mozilla.org/network/io-service;1"].getService(Ci.nsIIOService);
+
+  var uri1 = ios.newURI("file:///");
+  Assert.ok(uri1 instanceof Ci.nsIFileURL);
+
+  var uri2 = uri1.mutate().finalize();
+  Assert.ok(uri2 instanceof Ci.nsIFileURL);
+  Assert.ok(uri1.equals(uri2));
+
+  var uri3 = round_trip(uri1);
+  Assert.ok(uri3 instanceof Ci.nsIFileURL);
+  Assert.ok(uri1.equals(uri3));
+
+  // Make sure our prefs are set such that this test actually means something
+  var prefs = Cc["@mozilla.org/preferences-service;1"].getService(
+    Ci.nsIPrefBranch
+  );
+  for (var pref of prefData) {
+    prefs.setBoolPref(pref.name, pref.newVal);
+  }
+
+  try {
+    // URI stolen from
+    // http://lists.w3.org/Archives/Public/public-iri/2004Mar/0012.html
+    var uri4 = ios.newURI("http://xn--jos-dma.example.net.ch/");
+    Assert.equal(uri4.asciiHost, "xn--jos-dma.example.net.ch");
+    Assert.equal(uri4.displayHost, "jos\u00e9.example.net.ch");
+
+    var uri5 = round_trip(uri4);
+    Assert.ok(uri4.equals(uri5));
+    Assert.equal(uri4.displayHost, uri5.displayHost);
+    Assert.equal(uri4.asciiHost, uri5.asciiHost);
+  } finally {
+    for (var pref of prefData) {
+      if (prefs.prefHasUserValue(pref.name)) {
+        prefs.clearUserPref(pref.name);
+      }
+    }
+  }
+}