1 files changed, 26 insertions, 0 deletions
diff --git a/netwerk/test/unit/test_bug580508.js b/netwerk/test/unit/test_bug580508.js
new file mode 100644
index 000000000..3e2c495e0
--- /dev/null
+++ b/netwerk/test/unit/test_bug580508.js
@@ -0,0 +1,26 @@
+var ioService = Cc["@mozilla.org/network/io-service;1"]
+                .getService(Ci.nsIIOService);
+var resProt = ioService.getProtocolHandler("resource")
+              .QueryInterface(Ci.nsIResProtocolHandler);
+
+function run_test() {
+    // Define a resource:// alias that points to another resource:// URI.
+    let greModulesURI = ioService.newURI("resource://gre/modules/", null, null);
+    resProt.setSubstitution("my-gre-modules", greModulesURI);
+
+    // When we ask for the alias, we should not get the resource://
+    // URI that we registered it for but the original file URI.
+    let greFileSpec = ioService.newURI("modules/", null,
+                                       resProt.getSubstitution("gre")).spec;
+    let aliasURI = resProt.getSubstitution("my-gre-modules");
+    do_check_eq(aliasURI.spec, greFileSpec);
+
+    // Resolving URIs using the original resource path and the alias
+    // should yield the same result.
+    let greNetUtilURI = ioService.newURI("resource://gre/modules/NetUtil.jsm",
+                                         null, null);
+    let myNetUtilURI = ioService.newURI("resource://my-gre-modules/NetUtil.jsm",
+                                        null, null);
+    do_check_eq(resProt.resolveURI(greNetUtilURI),
+                resProt.resolveURI(myNetUtilURI));
+}