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
@@ -9,44 +9,42 @@ from {{ cookiecutter.app_name }}.user.models import User, Role
 from .base import DbTestCase
 from .factories import UserFactory
 
-
-def test_created_at_defaults_to_datetime(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):
-    user = User(username='foo', email='foo@bar.com')
-    user.save()
-    assert user.password is None
-
-def test_factory(session):
-    user = UserFactory(password="myprecious")
-    assert bool(user.username)
-    assert bool(user.email)
-    assert bool(user.created_at)
-    assert user.is_admin is False
-    assert user.active is True
-    assert user.password == "myprecious"
-
-def test_check_password_with_equality_operators(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):
-    user = UserFactory(first_name="Foo", last_name="Bar")
-    assert user.full_name == "Foo Bar"
-
-def test_roles(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()
+class TestUser:
+
+    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(self, session):
+        user = User(username='foo', email='foo@bar.com')
+        user.save()
+        assert user.password is None
+
+    def test_factory(self, session):
+        user = UserFactory(password="myprecious")
+        assert bool(user.username)
+        assert bool(user.email)
+        assert bool(user.created_at)
+        assert user.is_admin is False
+        assert user.active is True
+        assert user.password == "myprecious"
+
+    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(self, session):
+        user = UserFactory(first_name="Foo", last_name="Bar")
+        assert user.full_name == "Foo Bar"
+
+    def test_roles(self, session):
+        role = Role(name='admin')
+        role.save()
+        u = UserFactory()
+        u.roles.append(role)
+        u.save()
+        assert role in u.roles