adds related factory

tests/factories/segment.py

@@ -1,5 +1,5 @@
 import factory
-
+from django.db import models
 from personalisation.models import Segment, TimeRule
 
 
@@ -7,6 +7,8 @@ class SegmentFactory(factory.DjangoModelFactory):
     name = 'TestSegment'
     status = 'enabled'
 
+    time_rule = factory.RelatedFactory(TimeRuleFactory, '%(app_label)s_%(class)s_related', action=TimeRule.ACTION_CREATE)
+
     class Meta:
         model = Segment
 
@@ -14,3 +16,4 @@ class SegmentFactory(factory.DjangoModelFactory):
 class TimeRuleFactory(factory.DjangoModelFactory):
     class Meta:
         model = TimeRule
+