Put the carbon-txt-preview route behind a flag

apps/accounts/admin_site.py

@@ -12,7 +12,7 @@
 from django.shortcuts import render
 from django.urls import path, reverse
 from django.views.generic.edit import FormView
-
+from waffle.mixins import WaffleFlagMixin
 
 from apps.greencheck.views import GreenUrlsView
 
@@ -88,10 +88,11 @@ def clean(self):
                     )
 
 
-class CarbonTxtCheckView(LoginRequiredMixin, FormView):
+class CarbonTxtCheckView(WaffleFlagMixin, LoginRequiredMixin, FormView):
     template_name = "carbon_txt_preview.html"
     form_class = CarbonTxtForm
     success_url = "/admin/carbon-txt-preview"
+    waffle_flag = "carbon_txt_preview"
 
     def form_valid(self, form):
         """Show the valid"""
@@ -238,7 +239,6 @@ def get_app_list(self, request, app_label=None):
         if app_label:
             return app_list
 
-
         verification_request_item = {
             "name": "New provider portal",
             "app_label": "greencheck",

apps/greencheck/tests/views/test_api_carbon_txt.py

@@ -17,6 +17,8 @@
 
 rf = APIRequestFactory()
 
+from waffle.testutils import override_flag
+
 
 @pytest.fixture
 def carbon_txt_string():
@@ -84,6 +86,18 @@ def test_carbon_txt_url_and_content(
 
         assert response.status_code == 200
 
+    @pytest.mark.parametrize("active,status_code", [(True, 200), (False, 404)])
+    def test_carbon_txt_preview_behind_flag(
+        self, db, settings, client, active, status_code
+    ):
+        """
+        Check that our preview is now behind a flag
+        """
+        with override_flag("carbon_txt_preview", active=active):
+            url_path = reverse("greenweb_admin:carbon_txt_preview")
+            response = client.get(url_path, follow=True)
+            assert response.status_code == status_code
+
 
 class TestProviderSharedSecretAPI:
     """