Follow one test class per model convention

{{cookiecutter.app_name}}/manage.py

@@ -17,7 +17,7 @@ else:
     app = create_app(DevConfig)
 
 manager = Manager(app)
-TEST_CMD = "py.test"
+TEST_CMD = "py.test tests"
 
 def _make_context():
     '''Return context dict for a shell session so you can access

{{cookiecutter.app_name}}/tests/test_models.py

@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
-import unittest
+"""Model unit tests."""
 import datetime as dt
 
 import pytest
@@ -9,19 +9,20 @@ from {{ cookiecutter.app_name }}.user.models import User, Role
 from .base import DbTestCase
 from .factories import UserFactory
 
+class TestUser:
 
-def test_created_at_defaults_to_datetime(session):
+    def test_created_at_defaults_to_datetime(self, session):
         user = User(username='foo', email='foo@bar.com')
         user.save()
         assert bool(user.created_at)
         assert isinstance(user.created_at, dt.datetime) is True
 
-def test_password_is_nullable(session):
+    def test_password_is_nullable(self, session):
         user = User(username='foo', email='foo@bar.com')
         user.save()
         assert user.password is None
 
-def test_factory(session):
+    def test_factory(self, session):
         user = UserFactory(password="myprecious")
         assert bool(user.username)
         assert bool(user.email)
@@ -30,23 +31,20 @@ def test_factory(session):
         assert user.active is True
         assert user.password == "myprecious"
 
-def test_check_password_with_equality_operators(session):
+    def test_check_password_with_equality_operators(self, session):
         user = User.create(username="foo", email="foo@bar.com",
                     password="foobarbaz123")
         assert user.password == 'foobarbaz123'
         assert user.password != "barfoobaz"
 
-def test_full_name(session):
+    def test_full_name(self, session):
         user = UserFactory(first_name="Foo", last_name="Bar")
         assert user.full_name == "Foo Bar"
 
-def test_roles(session):
+    def test_roles(self, session):
         role = Role(name='admin')
         role.save()
         u = UserFactory()
         u.roles.append(role)
         u.save()
         assert role in u.roles
-
-if __name__ == '__main__':
-    unittest.main()