Added unit test.

modoboa/admin/factories.py

@@ -81,6 +81,16 @@ class AlarmFactory(factory.django.DjangoModelFactory):
         model = models.Alarm
 
 
+class MXRecordFactory(factory.django.DjangoModelFactory):
+    """Factory for MXRecord model."""
+
+    domain = factory.SubFactory(DomainFactory)
+    address = "127.0.0.1"
+
+    class Meta:
+        model = models.MXRecord
+
+
 def populate_database():
     """Create test data.
 

modoboa/admin/models/domain.py

@@ -188,27 +188,27 @@ class Domain(mixins.MessageLimitMixin, AdminObject):
         else:
             return "success"
 
-    @cached_property
+    @property
     def spf_record(self):
         """Return SPF record."""
         return self.dnsrecord_set.filter(type="spf").first()
 
-    @cached_property
+    @property
     def dkim_record(self):
         """Return DKIM record."""
         return self.dnsrecord_set.filter(type="dkim").first()
 
-    @cached_property
+    @property
     def dmarc_record(self):
         """Return DMARC record."""
         return self.dnsrecord_set.filter(type="dmarc").first()
 
-    @cached_property
+    @property
     def autoconfig_record(self):
         """Return autoconfig record."""
         return self.dnsrecord_set.filter(type="autoconfig").first()
 
-    @cached_property
+    @property
     def autodiscover_record(self):
         """Return autodiscover record."""
         return self.dnsrecord_set.filter(type="autodiscover").first()

modoboa/admin/models/mxrecord.py

@@ -4,7 +4,6 @@ import datetime
 
 from django.db import models
 from django.utils import timezone
-from django.utils.encoding import python_2_unicode_compatible
 
 from modoboa.parameters import tools as param_tools
 
@@ -52,7 +51,6 @@ class MXRecordManager(models.Manager):
             yield record
 
 
-@python_2_unicode_compatible
 class MXRecord(models.Model):
     """A model used to store MX records for Domain."""