[SEBA-126] Adding xproto support for min and max validators

Change-Id: I6141c678d88a894db2a86132bdbad4e9c6b31b2f
diff --git a/lib/xos-genx/xos-genx-tests/test_jinja2_django.py b/lib/xos-genx/xos-genx-tests/test_jinja2_django.py
index ea8738e..ab47443 100644
--- a/lib/xos-genx/xos-genx-tests/test_jinja2_django.py
+++ b/lib/xos-genx/xos-genx-tests/test_jinja2_django.py
@@ -44,6 +44,75 @@
         res = xproto_optioned_fields_to_list(fields, 'feedback_state', 'True')
         self.assertEqual(res, ["has_feedback_1", "has_feedback_2"])
 
+    def test_xproto_required_to_django(self):
+        field = {
+            'name': 'foo',
+            'options': {
+                'modifier': 'required'
+            }
+        }
+
+        res = map_xproto_to_django(field)
+        self.assertEqual(res, {'blank': False, 'null': False})
+
+    def test_xproto_optional_to_django(self):
+        field = {
+            'name': 'foo',
+            'options': {
+                'modifier': 'optional'
+            }
+        }
+
+        res = map_xproto_to_django(field)
+        self.assertEqual(res, {'blank': True, 'null': True})
+
+
+    def test_map_xproto_to_django(self):
+
+        options = {
+            'help_text': 'bar',
+            'default': 'default_value',
+            'null':  True,
+            'db_index': False,
+            'blank': False,
+            'min_value': 16,
+            'max_value': 16
+        }
+
+        field = {
+            'name': 'foo',
+            'options': options
+        }
+
+        res = map_xproto_to_django(field)
+        self.assertEqual(res, options)
+
+    def test_format_options_string(self):
+
+        options = {
+            'null':  True,
+            'min_value': 16,
+            'max_value': 16
+        }
+
+        res = format_options_string(options)
+        self.assertEqual(res, "null = True, validators=[MaxValueValidator(16), MinValueValidator(16)]")
+
+        options = {
+            'min_value': 16,
+            'max_value': 16
+        }
+
+        res = format_options_string(options)
+        self.assertEqual(res, "validators=[MaxValueValidator(16), MinValueValidator(16)]")
+
+        options = {
+            'null': True,
+        }
+
+        res = format_options_string(options)
+        self.assertEqual(res, "null = True")
+
 if __name__ == '__main__':
     unittest.main()