Drop unnecessary CSP directives for gold view (#11605)

* Drop unnecessary CSP directives for gold view

This does not seem needed, as there is no inline script src in
`subscription_detail.html`. It seems like maybe we wrote this for
`subscription_form.html`, which was old.

This conditional was breaking the view for me locally, as we don't have
any CSP directives for `script-src` locally, we only have these in
production. Because of this, there are no other `script-src` exceptions.

* Revert test functionality

readthedocs/gold/tests/test_views.py

@@ -1,7 +1,7 @@
 import re
 
 from django.contrib.auth.models import User
-from django.test import TestCase, override_settings
+from django.test import TestCase
 from django.urls import reverse
 from django_dynamic_fixture import get
 
@@ -11,17 +11,19 @@ def setUp(self):
         self.user = get(User)
 
     def test_csp_headers(self):
+        """
+        Test CSP headers aren't altered.
+
+        This view originally altered the CSP directives based on whether we were
+        using the new dashboard. We weren't using inline scripts in this view
+        however, so this was reverted. The tests remain for now, but aren't
+        super useful and will break when we change `script-src` in base settings.
+        """
         self.client.force_login(self.user)
         csp_header = "Content-Security-Policy"
         script_src_regex = re.compile(r".*\s+script-src [^;]*'unsafe-inline'")
         url = reverse("gold_detail")
 
-        with override_settings(RTD_EXT_THEME_ENABLED=False):
-            resp = self.client.get(url)
-            self.assertEqual(resp.status_code, 200)
-            self.assertIsNone(script_src_regex.match(resp[csp_header]))
-
-        with override_settings(RTD_EXT_THEME_ENABLED=True):
-            resp = self.client.get(url)
-            self.assertEqual(resp.status_code, 200)
-            self.assertTrue(script_src_regex.match(resp[csp_header]))
+        resp = self.client.get(url)
+        self.assertEqual(resp.status_code, 200)
+        self.assertIsNone(script_src_regex.match(resp[csp_header]))

readthedocs/gold/views.py

@@ -39,18 +39,6 @@ class GoldSubscription(
     form_class = GoldSubscriptionForm
     template_name = "gold/subscription_detail.html"
 
-    def dispatch(self, request, *args, **kwargs):
-        response = super().dispatch(request, *args, **kwargs)
-        # Allow inline scripts for the gold view.
-        # We are using inline javascript to initialize Stripe Checkout.
-        # Allowing inline scripts defeats the purpose of using CSP,
-        # but we are limiting it to this view.
-        # TODO: use the `@csp_update` decorator once we are running
-        # ext-theme by default.
-        if settings.RTD_EXT_THEME_ENABLED:
-            response._csp_update = {"script-src": "'unsafe-inline'"}
-        return response
-
     def get(self, *args, **kwargs):
         subscribed = self.request.GET.get("subscribed", None)
         if subscribed == "true":