[Chore #159296016] Write unittests for UserRegistrationView

.travis.yml

@@ -26,4 +26,5 @@ script:
   - coverage run --source='.' manage.py test --settings=authors.settings.testing
 
 after_success:
-  - coveralls
+  - coveralls
+

authors/apps/authentication/tests/test_registration.py

@@ -0,0 +1,80 @@
+from django.test import TestCase, RequestFactory
+from authors.apps.authentication.views import RegistrationAPIView
+import json
+
+class RegisterUserTestCase(TestCase):
+
+    def setUp(self):
+        self.factory = RequestFactory()
+
+        self.user = {
+            "user" : {
+            "email":"test@gmail.com",
+            "username":"test",
+            "password":"testpassword"
+        }
+        }
+
+        self.request = self.factory.post('/api/users/', data = json.dumps(self.user), content_type='application/json')
+        self.response = RegistrationAPIView.as_view()(self.request)
+
+    def test_user_registration_success(self):
+
+        self.assertEqual(self.response.status_code, 201)
+
+
+    def test_user_registration_with_empty_credentials(self):
+
+        user = {}
+        request = self.factory.post('/api/users/', data = json.dumps(user), content_type='application/json')
+
+        response = RegistrationAPIView.as_view()(request)
+
+        self.assertIn('This field is required.',response.data["errors"]["email"][0])
+        self.assertIn('This field is required.',response.data["errors"]["username"][0])
+        self.assertIn('This field is required.',response.data["errors"]["password"][0])
+        self.assertEqual(response.status_code, 400)
+
+
+    def test_user_registration_with_invalid_email(self):
+
+        """ Wrong email address without @ """
+
+        user = {
+            "user" : {
+            "email":"testgmail.com",
+            "username":"test",
+            "password":"testpassword"
+        }
+        }
+
+        request = self.factory.post('/api/users/', data = json.dumps(user), content_type='application/json')
+
+        response = RegistrationAPIView.as_view()(request)
+
+        self.assertIn('Enter a valid email address.',response.data["errors"]["email"][0])
+        self.assertEqual(response.status_code, 400)
+
+
+    def test_user_registration_for_email_that_already_exists(self):
+
+        """ Use the same email that was used when setting up """
+
+        request = self.factory.post('/api/users/', data = json.dumps(self.user), content_type='application/json')
+
+        response = RegistrationAPIView.as_view()(request)
+
+        self.assertIn('user with this email already exists.',response.data["errors"]["email"][0])
+        self.assertEqual(response.status_code, 400)
+
+
+    def test_user_registration_for_username_that_already_exists(self):
+
+        """ Use the same username that was used when setting up """
+
+        request = self.factory.post('/api/users/', data = json.dumps(self.user), content_type='application/json')
+
+        response = RegistrationAPIView.as_view()(request)
+
+        self.assertIn('user with this username already exists.',response.data["errors"]["username"][0])
+        self.assertEqual(response.status_code, 400)