Add new email template for the GOV.UK Notify service, to send an email to users that register with the same email address.

Add a new endpoint to send the email.

tests/app/conftest.py

@@ -699,3 +699,38 @@ def password_reset_email_template(notify_db,
         template = Template(**data)
         db.session.add(template)
     return template
+
+
+@pytest.fixture(scope='function')
+def already_registered_template(notify_db,
+                                notify_db_session):
+    user = sample_user(notify_db, notify_db_session)
+    service = Service.query.get(current_app.config['NOTIFY_SERVICE_ID'])
+    if not service:
+        data = {
+            'id': current_app.config['NOTIFY_SERVICE_ID'],
+            'name': 'Notify Service',
+            'message_limit': 1000,
+            'active': True,
+            'restricted': False,
+            'email_from': 'notify.service',
+            'created_by': user
+        }
+        service = Service(**data)
+        db.session.add(service)
+
+    template = Template.query.get(current_app.config['ALREADY_REGISTERED_EMAIL_TEMPLATE_ID'])
+    if not template:
+        data = {
+            'id': current_app.config['ALREADY_REGISTERED_EMAIL_TEMPLATE_ID'],
+            'name': 'ALREADY_REGISTERED_EMAIL_TEMPLATE_ID',
+            'template_type': 'email',
+            'content': """Sign in here: ((signin_url)) If you’ve forgotten your password,
+                          you can reset it here: ((forgot_password_url)) feedback:((feedback_url))""",
+            'service': service,
+            'created_by': user,
+            'archived': False
+        }
+        template = Template(**data)
+        db.session.add(template)
+    return template

tests/app/user/test_rest.py

@@ -455,3 +455,35 @@ def test_send_user_reset_password_should_return_400_when_data_is_not_email_addre
 
         assert resp.status_code == 400
         assert json.loads(resp.get_data(as_text=True))['message'] == {'email': ['Not a valid email address']}
+
+
+@freeze_time("2016-01-01 11:09:00.061258")
+def test_send_already_registered_email(notify_api, sample_user, already_registered_template, mocker):
+    with notify_api.test_request_context():
+        with notify_api.test_client() as client:
+            data = json.dumps({'to': sample_user.email_address})
+            auth_header = create_authorization_header()
+            mocker.patch('app.celery.tasks.send_email.apply_async')
+            mocker.patch('uuid.uuid4', return_value='some_uuid')  # for the notification id
+
+            resp = client.post(
+                url_for('user.send_already_registered_email', user_id=str(sample_user.id)),
+                data=data,
+                headers=[('Content-Type', 'application/json'), auth_header])
+            assert resp.status_code == 204
+            message = {
+                'template': str(already_registered_template.id),
+                'template_version': already_registered_template.version,
+                'to': sample_user.email_address,
+                'personalisation': {
+                    'signin_url': current_app.config['ADMIN_BASE_URL'] + '/sign-in',
+                    'forgot_password_url': current_app.config['ADMIN_BASE_URL'] + '/forgot-password',
+                    'feedback_url': current_app.config['ADMIN_BASE_URL'] + '/feedback'
+                }
+            }
+            app.celery.tasks.send_email.apply_async.assert_called_once_with(
+                (str(current_app.config['NOTIFY_SERVICE_ID']),
+                 'some_uuid',
+                 app.encryption.encrypt(message),
+                 "2016-01-01T11:09:00.061258"),
+                queue="email-already-registered")