diff --git a/django_lostplaces/lostplaces/tests/models/__init__.py b/django_lostplaces/lostplaces/tests/models/__init__.py
index 1e5f7f6..70b5253 100644
--- a/django_lostplaces/lostplaces/tests/models/__init__.py
+++ b/django_lostplaces/lostplaces/tests/models/__init__.py
@@ -2,11 +2,9 @@
 # -*- coding: utf-8 -*-
 
 from django.db import models
-from django.contrib.auth.models import User
 from django.core.exceptions import FieldDoesNotExist
 from django.test import TestCase
 
-# Creating a test user
 
 class ModelTestCase(TestCase):
     '''
diff --git a/django_lostplaces/lostplaces/tests/models/test_abstract_models.py b/django_lostplaces/lostplaces/tests/models/test_abstract_models.py
index 30415de..3d32b25 100644
--- a/django_lostplaces/lostplaces/tests/models/test_abstract_models.py
+++ b/django_lostplaces/lostplaces/tests/models/test_abstract_models.py
@@ -1,6 +1,9 @@
 #!/usr/bin/env python
 # -*- coding: utf-8 -*-
 
+import datetime
+
+from django.utils import timezone
 from django.test import TestCase
 from django.db import models
 from django.contrib.auth.models import User
@@ -10,7 +13,8 @@ from lostplaces.models import (
     Mapable,
     Submittable,
     PlaceAsset,
-    Expireable
+    Expireable,
+    Voucher
 )
 from lostplaces.tests.models import ModelTestCase
 
@@ -112,4 +116,34 @@ class PlaceAssetTestCase(ModelTestCase):
         )
 
 class ExpireableTestCase(ModelTestCase):
-    model = Expireable
\ No newline at end of file
+    model = Expireable
+    
+    def test_fields(self):
+        self.assertField(
+            field_name='created_when',
+            field_class=models.DateTimeField,
+            must_have={'auto_now_add': True}
+        )
+        self.assertField(
+            field_name='expires_when',
+            field_class=models.DateTimeField
+        )
+        
+    def test_is_expired(self):
+        valid_voucher = Voucher.objects.create(
+            code='Test123',
+            expires_when=timezone.now() + datetime.timedelta(minutes=2)
+        )
+        self.assertFalse(
+            valid_voucher.is_expired,
+            msg='Expecing the expirable object to not be expired'
+        )
+        
+        invalid_voucher = Voucher.objects.create(
+            code='Test1234',
+            expires_when=timezone.now() - datetime.timedelta(minutes=2)
+        )
+        self.assertTrue(
+            invalid_voucher.is_expired,
+            msg='Expecing the expirable object to be expired'
+        )
\ No newline at end of file