diff --git a/conntrackt/tests/test_models.py b/conntrackt/tests/test_models.py
--- a/conntrackt/tests/test_models.py
+++ b/conntrackt/tests/test_models.py
@@ -6,6 +6,13 @@ from django.test import TestCase
 # Application imports.
 from conntrackt.models import Project, Location, Entity, Interface, Communication
 
+# Test imports.
+from .factories import ProjectFactory, LocationFactory
+from .factories import ServerEntityFactory, ServerInterfaceFactory
+from .factories import SubnetEntityFactory, SubnetInterfaceFactory
+from .factories import CommunicationFactory
+from .factories import setup_test_data
+
 
 class ProjectTest(TestCase):
 
@@ -14,18 +21,16 @@ class ProjectTest(TestCase):
         Test if unique project name is enforced.
         """
 
-        project1 = Project(name="Test Project", description="This is a test project.")
-        project1.save()
+        project = ProjectFactory()
 
-        project2 = Project(name="Test Project", description="This is a test project.")
-        self.assertRaises(IntegrityError, project2.save)
+        self.assertRaises(IntegrityError, ProjectFactory, name=project.name)
 
     def test_representation(self):
         """
         Test the representation of project.
         """
 
-        project = Project(name="Test Project", description="This is a test project.")
+        project = ProjectFactory(name="Test Project")
 
         self.assertEqual(str(project), "Test Project")
 
@@ -34,7 +39,7 @@ class ProjectTest(TestCase):
         Tests if the absolute URL is generated properly.
         """
 
-        project = Project(pk=1, name="Test Project", description="This is a test project.")
+        project = ProjectFactory(pk=1)
 
         self.assertEqual(project.get_absolute_url(), "/conntrackt/project/1/")
 
@@ -43,27 +48,31 @@ class LocationTest(TestCase):
 
     def test_unique_name(self):
         """
-        Test if unique locationn name is enforced.
+        Test if unique location name is enforced.
         """
 
-        location1 = Location(name="Test Location", description="This is a test location.")
-        location1.save()
+        location = LocationFactory()
 
-        location2 = Location(name="Test Location", description="This is a test location.")
-        self.assertRaises(IntegrityError, location2.save)
+        self.assertRaises(IntegrityError, LocationFactory, name=location.name)
 
     def test_representation(self):
         """
         Test the representation of location.
         """
 
-        project = Location(name="Test Location", description="This is a test location.")
+        project = LocationFactory(name="Test Location")
 
         self.assertEqual(str(project), "Test Location")
 
 
 class EntityTest(TestCase):
-    fixtures = ['test-data.json']
+
+    def setUp(cls):
+        """
+        Set-up some test data.
+        """
+
+        setup_test_data()
 
     def test_incoming_communications(self):
         """
@@ -71,7 +80,7 @@ class EntityTest(TestCase):
         data.
         """
 
-        entity = Entity.objects.get(name="Test Entity 1")
+        entity = Entity.objects.get(pk=1)
         incoming = Communication.objects.filter(pk__in=(1, 2, 3, 5))
 
         self.assertItemsEqual(entity.incoming_communications(), incoming)
@@ -82,7 +91,7 @@ class EntityTest(TestCase):
         data.
         """
 
-        entity = Entity.objects.get(name="Test Entity 1")
+        entity = Entity.objects.get(pk=1)
         outgoing = Communication.objects.filter(pk__in=(4, 6))
 
         self.assertItemsEqual(entity.outgoing_communications(), outgoing)
@@ -92,7 +101,7 @@ class EntityTest(TestCase):
         Test the representation of entity.
         """
 
-        ent = Entity.objects.get(name="Test Entity 1")
+        ent = Entity.objects.get(pk=1)
         representation = "Test Entity 1 (Test Project 1 - Test Location 1)"
 
         self.assertEqual(str(ent), representation)
@@ -104,9 +113,9 @@ class EntityTest(TestCase):
 
         entity1 = Entity.objects.get(pk=1)
 
-        entity2 = Entity(name=entity1.name, description="Duplicate entity.", project=entity1.project, location=entity1.location)
+        entity_dup = Entity(name=entity1.name, description="Duplicate entity.", project=entity1.project, location=entity1.location)
 
-        self.assertRaises(IntegrityError, entity2.save)
+        self.assertRaises(IntegrityError, entity_dup.save)
 
     def test_absolute_url(self):
         """
@@ -131,7 +140,13 @@ class EntityTest(TestCase):
 
 
 class InterfaceTest(TestCase):
-    fixtures = ['test-data.json']
+
+    def setUp(self):
+        """
+        Set-up some test data.
+        """
+
+        setup_test_data()
 
     def test_unique_name(self):
         """
@@ -174,14 +189,20 @@ class InterfaceTest(TestCase):
         Test representation of subnet.
         """
 
-        interface = Entity.objects.get(name="Test Subnet").interface_set.get(name="eth0")
-        representation = "Test Subnet (192.168.2.0/255.255.255.0)"
+        interface = Entity.objects.get(pk=4).interface_set.get(name="switch0")
+        representation = "Test Subnet 4 (10.10.4.0/255.255.255.0)"
 
         self.assertEqual(str(interface), representation)
 
 
 class CommunicationTest(TestCase):
-    fixtures = ['test-data.json']
+
+    def setUp(self):
+        """
+        Set-up some test data.
+        """
+
+        setup_test_data()
 
     def test_unique_communication(self):
         """
@@ -197,13 +218,13 @@ class CommunicationTest(TestCase):
         Test enforcement of same project entities for communications.
         """
 
-        ent1 = Entity.objects.get(name="Test Entity 1")
+        ent1 = Entity.objects.get(pk=1)
         ent1_eth0 = ent1.interface_set.get(name="eth0")
-        ent2 = Entity.objects.get(name="Other Project Test Entity")
-        ent2_eth0 = ent2.interface_set.get(name="eth0")
+        ent5 = Entity.objects.get(pk=5)
+        ent5_eth0 = ent5.interface_set.get(name="eth0")
 
         # Set-up a communication between different projects.
-        comm = Communication.objects.create(source=ent1_eth0, destination=ent2_eth0, protocol="ICMP", port="8", description="Ping.")
+        comm = Communication.objects.create(source=ent1_eth0, destination=ent5_eth0, protocol="ICMP", port="8", description="Ping.")
 
         self.assertRaisesRegexp(ValidationError, 'Source and destination entities do not belong to the same project', comm.full_clean)
 
@@ -212,7 +233,7 @@ class CommunicationTest(TestCase):
         Test enforcement of differing entities for communication.
         """
 
-        ent = Entity.objects.get(name="Test Entity 1")
+        ent = Entity.objects.get(pk=1)
         ent_eth0 = ent.interface_set.get(name="eth0")
 
         # Set-up a communication between same entity.
@@ -225,9 +246,9 @@ class CommunicationTest(TestCase):
         Test enforcement of supported protocol.
         """
 
-        ent1 = Entity.objects.get(name="Test Entity 1")
+        ent1 = Entity.objects.get(pk=1)
         ent1_eth0 = ent1.interface_set.get(name="eth0")
-        ent2 = Entity.objects.get(name="Test Entity 2")
+        ent2 = Entity.objects.get(pk=2)
         ent2_eth0 = ent2.interface_set.get(name="eth0")
 
         comm = Communication(source=ent1_eth0, destination=ent2_eth0, protocol="BOGUS", port="1234")