diff --git a/ceci/config.py b/ceci/config.py
index d805107..8828364 100644
--- a/ceci/config.py
+++ b/ceci/config.py
@@ -156,6 +156,15 @@ def __repr__(self):
         s += self.__str__()
         return s
 
+    def to_dict(self):
+        """ Forcibly return a dict where the values have been cast from StageParameter """
+        return {key:cast_to_streamable(value) for key, value in dict.items(self)}
+
+    def __iter__(self):
+        """ Override the __iter__ to work with `StageParameter` """
+        d = self.to_dict()
+        return iter(d)
+
     def __getitem__(self, key):
         """ Override the __getitem__ to work with `StageParameter` """
         attr = dict.__getitem__(self, key)
@@ -187,7 +196,7 @@ def items(self):
     def values(self):
         """ Override values() to get the parameters values instead of the objects """
         return [cast_to_streamable(value) for value in dict.values(self)]
-        
+
     def set_config(self, input_config, args):
         """ Utility function to load configuration
 
diff --git a/tests/test_interactive.py b/tests/test_interactive.py
index 751251f..cce88b0 100644
--- a/tests/test_interactive.py
+++ b/tests/test_interactive.py
@@ -23,7 +23,7 @@ def test_config():
 
     config.free = 'dog'
     config.free = 42
-    
+
     try:
         config.chunk_rows = 'a'
     except TypeError:
@@ -42,16 +42,28 @@ def test_config():
     config['new_par'] = 'abc'
     assert config['new_par'] == 'abc'
     assert config.get_type('new_par') == str
-    
+
     config.reset()
     assert config.chunk_rows == 5000
-    
+
     assert config.get_type('chunk_rows') == int
 
     values = config.values()
     for key, value in config.items():
         #assert value == config[key].value
         assert value in values
+
+    def check_func(cfg, **kwargs):
+        for k, v in kwargs.items():
+            check_type = cfg.get_type(k)
+            if k is not None and v is not None:
+                assert check_type == type(v)
+
+    check_func(config, **config)
+
+    for k in iter(config):
+        assert k in config
+
     
     
 
@@ -64,14 +76,14 @@ def test_interactive_pipeline():
 
     dry_pipe = Pipeline.read('tests/test.yml', dry_run=True)
     dry_pipe.run()
-    
+
     pipe2 = Pipeline.interactive()
     overall_inputs = {'DM':'./tests/inputs/dm.txt',
                       'fiducial_cosmology':'./tests/inputs/fiducial_cosmology.txt'}
     inputs = overall_inputs.copy()
     inputs['metacalibration'] = True
     inputs['config'] = None
-    
+
     pipe2.pipeline_files.update(**inputs)
     pipe2.build_stage(PZEstimationPipe)
     pipe2.build_stage(shearMeasurementPipe, apply_flag=False)
@@ -93,11 +105,11 @@ def test_interactive_pipeline():
     assert pipe2['WLGCCov'] == pipe2.WLGCCov
 
     rpr = repr(pipe2.WLGCCov.config)
-    
+
     path = pipe2.pipeline_files.get_path('covariance_copy')
     assert pipe2.pipeline_files.get_tag(path) == 'covariance_copy'
     assert pipe2.pipeline_files.get_type('covariance_copy') == pipe2.WLGCCov.get_output_type('covariance')
-    
+
     pipe2.run()
 
 
@@ -111,19 +123,19 @@ def test_inter_pipe():
     inputs['config'] = None
 
     pipe2.pipeline_files.update(**inputs)
-    
+
     pipe2.build_stage(PZEstimationPipe, name='bob')
     assert isinstance(pipe2.bob, PZEstimationPipe)
     pipe2.remove_stage('bob')
 
     assert not hasattr(pipe2, 'bob')
 
-    
 
-    
-    
 
-    
+
+
+
+
 if __name__ == "__main__":
     test_config()
     test_interactive()