Fix typing errors

tests/test_csp_rendering.py

@@ -2,6 +2,7 @@
 from xml.etree.ElementTree import Element
 
 from django.conf import settings
+from django.http.response import HttpResponse
 from django.test.utils import ContextList, override_settings
 from html5lib.constants import E
 from html5lib.html5parser import HTMLParser
@@ -47,7 +48,7 @@ def _fail_if_found(self, root: Element, path: str, namespaces: Dict[str, str]):
         elements = root.findall(path=path, namespaces=namespaces)
         for item in elements:
             if "nonce" in item.attrib:
-                raise self.failureException(f"{item} has no nonce attribute.")
+                raise self.failureException(f"{item} has a nonce attribute.")
 
     def _fail_on_invalid_html(self, content: bytes, parser: HTMLParser):
         """Fail if the passed HTML is invalid."""
@@ -66,6 +67,8 @@ def _fail_on_invalid_html(self, content: bytes, parser: HTMLParser):
     def test_exists(self):
         """A `nonce` should exist when using the `CSPMiddleware`."""
         response = self.client.get(path="/regular/basic/")
+        if not isinstance(response, HttpResponse):
+            raise self.failureException(f'{response!r} is not a HttpResponse')
         self.assertEqual(response.status_code, 200)
 
         html_root: Element = self.parser.parse(stream=response.content)
@@ -88,14 +91,17 @@ def test_exists(self):
     )
     def test_redirects_exists(self):
         response = self.client.get("/redirect/")
+        if not isinstance(response, HttpResponse):
+            raise self.failureException(f'{response!r} is not a HttpResponse')
         self.assertEqual(response.status_code, 200)
 
         html_root: Element = self.parser.parse(stream=response.content)
         self._fail_on_invalid_html(content=response.content, parser=self.parser)
         self.assertContains(response, "djDebug")
 
         namespaces = get_namespaces(element=html_root)
-        context: ContextList = response.context
+        context: ContextList = \
+            response.context  # pyright: ignore[reportAttributeAccessIssue]
         nonce = str(context["toolbar"].request.csp_nonce)
         self._fail_if_missing(
             root=html_root, path=".//link", namespaces=namespaces, nonce=nonce
@@ -109,6 +115,8 @@ def test_redirects_exists(self):
     )
     def test_panel_content_nonce_exists(self):
         response = self.client.get("/regular/basic/")
+        if not isinstance(response, HttpResponse):
+            raise self.failureException(f'{response!r} is not a HttpResponse')
         self.assertEqual(response.status_code, 200)
 
         toolbar = list(DebugToolbar._store.values())[0]
@@ -128,6 +136,8 @@ def test_panel_content_nonce_exists(self):
     def test_missing(self):
         """A `nonce` should not exist when not using the `CSPMiddleware`."""
         response = self.client.get(path="/regular/basic/")
+        if not isinstance(response, HttpResponse):
+            raise self.failureException(f'{response!r} is not a HttpResponse')
         self.assertEqual(response.status_code, 200)
 
         html_root: Element = self.parser.parse(stream=response.content)