diff -r 000000000000 -r 6474c204b198 xpcom/tests/nsIFileEnumerator.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/xpcom/tests/nsIFileEnumerator.cpp	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,88 @@
+#include "nsIFile.h"
+#include "nsStringGlue.h"
+
+#include <stdio.h>
+#include "nsIComponentRegistrar.h"
+#include "nsIComponentManager.h"
+#include "nsIServiceManager.h"
+#include "nsMemory.h"
+#include "nsISimpleEnumerator.h"
+#include "nsCOMPtr.h"
+
+bool LoopInDir(nsIFile* file)
+{
+    nsresult rv;
+    nsCOMPtr<nsISimpleEnumerator> entries;
+    rv = file->GetDirectoryEntries(getter_AddRefs(entries));
+    if(NS_FAILED(rv) || !entries)
+        return false;
+    
+    bool hasMore;
+    while(NS_SUCCEEDED(entries->HasMoreElements(&hasMore)) && hasMore)
+    {
+        nsCOMPtr<nsISupports> sup;
+        entries->GetNext(getter_AddRefs(sup));
+        if(!sup)
+            return false;
+        
+        nsCOMPtr<nsIFile> file = do_QueryInterface(sup);
+        if(!file)
+            return false;
+    
+        nsAutoCString name;
+        if(NS_FAILED(file->GetNativeLeafName(name)))
+            return false;
+        
+        bool isDir;
+        printf("%s\n", name.get());
+        rv = file->IsDirectory(&isDir);
+        if (NS_FAILED(rv))
+		{
+			printf("IsDirectory Failed!!!\n");
+				return false;
+		}
+
+		if (isDir)
+        {
+           LoopInDir(file);   
+        }        
+    }
+    return true;
+}
+
+
+int
+main(int argc, char* argv[])
+{
+    nsresult rv;
+    {
+        nsCOMPtr<nsIFile> topDir;
+
+        nsCOMPtr<nsIServiceManager> servMan;
+        rv = NS_InitXPCOM2(getter_AddRefs(servMan), nullptr, nullptr);
+        if (NS_FAILED(rv)) return -1;
+
+        if (argc > 1 && argv[1] != nullptr)
+        {
+            char* pathStr = argv[1];
+            NS_NewNativeLocalFile(nsDependentCString(pathStr), false, getter_AddRefs(topDir));
+        }
+    
+        if (!topDir)
+        {
+           printf("No Top Dir\n");
+           return -1;
+        }
+        int32_t startTime = PR_IntervalNow();
+    
+        LoopInDir(topDir);
+    
+        int32_t endTime = PR_IntervalNow();
+    
+        printf("\nTime: %d\n", PR_IntervalToMilliseconds(endTime - startTime));
+    } // this scopes the nsCOMPtrs
+    // no nsCOMPtrs are allowed to be alive when you call NS_ShutdownXPCOM
+    rv = NS_ShutdownXPCOM(nullptr);
+    NS_ASSERTION(NS_SUCCEEDED(rv), "NS_ShutdownXPCOM failed");
+    return 0;
+}