[ninefold|storage] Update an existing file

tests/storage/models/ninefold/file_update_tests.rb

@@ -0,0 +1,15 @@
+if storage_providers.keys.include? :ninefold
+  for provider, config in storage_providers
+
+    Shindo.tests("Storage[:ninefold] | nested directories", [provider]) do
+      ninefold = Fog::Storage[:ninefold]
+      tests("update a file").succeeds do
+        dir = ninefold.directories.create(:key => 'updatefiletests')
+        f = dir.files.create(:key => 'lorem.txt', :body => lorem_file)
+        f.body = "xxxxxx"
+        f.save
+      end
+    end
+
+  end
+end