factor out iterate code to be able to test it for one, two, ... runs

Signed-off-by: Nico Schottelius <nico@bento.schottelius.org>

cdist/config_install.py

@@ -75,12 +75,11 @@ class ConfigInstall(object):
                                                          self.context.local.type_path):
             yield cdist_object
 
-    def iterate_until_finished(self):
-        # Continue process until no new objects are created anymore
-
-        objects_changed = True
-
-        while objects_changed:
+    def iterate_once(self):
+        """
+            Iterate over the objects once - helper method for 
+            iterate_until_finished
+        """
         objects_changed  = False
 
         for cdist_object in self.object_list():
@@ -102,6 +101,20 @@ class ConfigInstall(object):
                 self.object_run(cdist_object)
                 objects_changed = True
 
+        return objects_changed
+
+
+    def iterate_until_finished(self):
+        """
+            Go through all objects and solve them
+            one after another
+        """
+
+        objects_changed = True
+
+        while objects_changed:
+            objects_changed = self.iterate_once()
+
         # Check whether all objects have been finished
         unfinished_objects = []
         for cdist_object in self.object_list():