Removed superfluos tests

django_cookbook/model/fields.py

@@ -1,33 +1,30 @@
-import json
-
+import pickle
 from django.core.exceptions import ValidationError
 from django.db.models import TextField, SubfieldBase
 from six import with_metaclass
 
 
 class IterField(with_metaclass(SubfieldBase, TextField)):
     """
-    Stores the an iterable object in the the database. The data is stored as JSON and so all the values given to the
-    field must be serializable by the "json" module. This includes dict, list, tuple, str, int, float, True, False and
-    None
+    Stores an iterable object in the the database. All the values given to the field must be serializable by the "pickle" package.
     """
 
     def to_python(self, value):
         if isinstance(value, list) or isinstance(value, dict) or value is None:
             return value
 
-        if not isinstance(value, str):
+        if not isinstance(value, bytes):
             raise ValidationError("Invalid input for a IterField instance")
 
         if not value:
             return []
 
         # We could store the data as a string representation of the iterable which we then "eval" but this would allow
         # for malicious data to be stores in the field so we need to do some sanity checking on the string. We let the
-        # json library handle this.
-        return json.loads(value)
+        # pickle library handle this.
+        return pickle.loads(value)
 
     def get_prep_value(self, value):
-        return json.dumps(value, separators=(',', ':'))
+        return pickle.dumps(value)
 
 

django_cookbook/test/unit/test_IterField_PrepToPython.py

@@ -1,3 +1,6 @@
+import os
+os.environ.setdefault("DJANGO_SETTINGS_MODULE", "django_cookbook.test.settings")
+
 from django.test import TestCase
 from django_cookbook.model.fields import IterField