Redirect implemented with tests coverage

app/__init__.py

@@ -2,6 +2,7 @@ import os
 import pathlib
 from functools import partial
 from time import monotonic
+from urllib.parse import urlparse, urlunparse
 
 import jinja2
 from flask import (
@@ -254,6 +255,7 @@ def create_app(application):
 
 
 def init_app(application):
+    application.before_request(redirect_notify_to_beta)
     application.before_request(load_service_before_request)
     application.before_request(load_organization_before_request)
     application.before_request(request_helper.check_proxy_header_before_request)
@@ -332,6 +334,22 @@ def make_session_permanent():
     session.permanent = True
 
 
+def create_url(environment, url):
+    url_created = urlparse(url)
+    if environment == "production":
+        url_list = list(url_created)
+        url_list[1] = "beta.notify.gov"
+        url_for_redirect = urlunparse(url_list)
+        return url_for_redirect
+    return url
+
+
+def redirect_notify_to_beta():
+    url_to_beta = create_url(current_app.config["NOTIFY_ENVIRONMENT"], request.url)
+    if current_app.config["NOTIFY_ENVIRONMENT"] == "production":
+        redirect(url_to_beta, 301)
+
+
 def load_service_before_request():
     if "/static/" in request.url:
         request_ctx.service = None

tests/app/test_event_handlers.py

@@ -1,6 +1,7 @@
 import uuid
 from unittest.mock import ANY
 
+from app import create_url
 from app.event_handlers import (
     create_add_user_to_service_event,
     create_archive_service_event,
@@ -129,3 +130,15 @@ def test_set_user_permissions(client_request, mock_events):
 
     create_set_user_permissions_event(**kwargs)
     mock_events.assert_called_with("set_user_permissions", event_dict(**kwargs))
+
+
+def test_create_url():
+    url_for_redirect = create_url(
+        "production", "https://notify.gov/using-notify/get-started"
+    )
+    assert url_for_redirect == "https://beta.notify.gov/using-notify/get-started"
+
+
+def test_create_url_non_production():
+    url = create_url("development", "https://notify.gov/using-notify/get-started")
+    assert url == "https://notify.gov/using-notify/get-started"