Updated documentation and comments for RFC updates.

- Updated references to RFC 1123 to RFC 5322
  - Only partial as RFC 5322 sort of sub-references RFC 1123.
- Updated references to RFC 2388 to RFC 7578
  - Except RFC 2388 Section 5.3 which has no equivalent.
- Updated references to RFC 2396 to RFC 3986
- Updated references to RFC 2616 to RFC 9110
- Updated references to RFC 3066 to RFC 5646
- Updated references to RFC 7230 to RFC 9112
- Updated references to RFC 7231 to RFC 9110
- Updated references to RFC 7232 to RFC 9110
- Updated references to RFC 7234 to RFC 9111
- Tidied up style of text when referring to RFC documents

11 files changed, 17 insertions, 22 deletions

diff --git a/tests/auth_tests/test_models.py b/tests/auth_tests/test_models.py
index 01bb7981a4..fe1afcbdc3 100644
--- a/tests/auth_tests/test_models.py
+++ b/tests/auth_tests/test_models.py
@@ -122,8 +122,8 @@ class UserManagerTestCase(TransactionTestCase):
         self.assertFalse(user.has_usable_password())
 
     def test_create_user_email_domain_normalize_rfc3696(self):
-        # According to https://tools.ietf.org/html/rfc3696#section-3
-        # the "@" symbol can be part of the local part of an email address
+        # According to RFC 3696 Section 3 the "@" symbol can be part of the
+        # local part of an email address.
         returned = UserManager.normalize_email(r"Abc\@DEF@EXAMPLE.com")
         self.assertEqual(returned, r"Abc\@DEF@example.com")
 
diff --git a/tests/conditional_processing/tests.py b/tests/conditional_processing/tests.py
index 93f96546aa..67007b5d66 100644
--- a/tests/conditional_processing/tests.py
+++ b/tests/conditional_processing/tests.py
@@ -143,7 +143,7 @@ class ConditionalGet(SimpleTestCase):
         self.assertEqual(response.status_code, 412)
 
     def test_both_headers(self):
-        # see https://tools.ietf.org/html/rfc7232#section-6
+        # See RFC 9110 Section 13.2.2.
         self.client.defaults["HTTP_IF_MODIFIED_SINCE"] = LAST_MODIFIED_STR
         self.client.defaults["HTTP_IF_NONE_MATCH"] = ETAG
         response = self.client.get("/condition/")
diff --git a/tests/file_uploads/tests.py b/tests/file_uploads/tests.py
index c6d76aa4c9..d5377488ff 100644
--- a/tests/file_uploads/tests.py
+++ b/tests/file_uploads/tests.py
@@ -189,8 +189,7 @@ class FileUploadTests(TestCase):
 
     def test_unicode_file_name_rfc2231(self):
         """
-        Test receiving file upload when filename is encoded with RFC2231
-        (#22971).
+        Receiving file upload when filename is encoded with RFC 2231.
         """
         payload = client.FakePayload()
         payload.write(
@@ -219,8 +218,7 @@ class FileUploadTests(TestCase):
 
     def test_unicode_name_rfc2231(self):
         """
-        Test receiving file upload when filename is encoded with RFC2231
-        (#22971).
+        Receiving file upload when filename is encoded with RFC 2231.
         """
         payload = client.FakePayload()
         payload.write(
diff --git a/tests/httpwrappers/tests.py b/tests/httpwrappers/tests.py
index 6ab0cc52cb..e1920e2eda 100644
--- a/tests/httpwrappers/tests.py
+++ b/tests/httpwrappers/tests.py
@@ -827,7 +827,7 @@ class CookieTests(unittest.TestCase):
         )
 
     def test_cookie_edgecases(self):
-        # Cookies that RFC6265 allows.
+        # Cookies that RFC 6265 allows.
         self.assertEqual(
             parse_cookie("a=b; Domain=example.com"), {"a": "b", "Domain": "example.com"}
         )
@@ -837,7 +837,7 @@ class CookieTests(unittest.TestCase):
 
     def test_invalid_cookies(self):
         """
-        Cookie strings that go against RFC6265 but browsers will send if set
+        Cookie strings that go against RFC 6265 but browsers will send if set
         via document.cookie.
         """
         # Chunks without an equals sign appear as unnamed values per
diff --git a/tests/mail/tests.py b/tests/mail/tests.py
index 183a0c0ab1..54a136c1a9 100644
--- a/tests/mail/tests.py
+++ b/tests/mail/tests.py
@@ -1234,8 +1234,8 @@ class BaseEmailBackendTests(HeadersCheckMixin):
 
     def test_send_long_lines(self):
         """
-        Email line length is limited to 998 chars by the RFC:
-        https://tools.ietf.org/html/rfc5322#section-2.1.1
+        Email line length is limited to 998 chars by the RFC 5322 Section
+        2.1.1.
         Message body containing longer lines are converted to Quoted-Printable
         to avoid having to insert newlines, which could be hairy to do properly.
         """
diff --git a/tests/middleware/tests.py b/tests/middleware/tests.py
index 6009350365..50ba268832 100644
--- a/tests/middleware/tests.py
+++ b/tests/middleware/tests.py
@@ -640,7 +640,7 @@ class ConditionalGetMiddlewareTest(SimpleTestCase):
     def test_not_modified_headers(self):
         """
         The 304 Not Modified response should include only the headers required
-        by section 4.1 of RFC 7232, Last-Modified, and the cookies.
+        by RFC 9110 Section 15.4.5, Last-Modified, and the cookies.
         """
 
         def get_response(req):
diff --git a/tests/requests/tests.py b/tests/requests/tests.py
index d8068583a7..833d68946b 100644
--- a/tests/requests/tests.py
+++ b/tests/requests/tests.py
@@ -425,10 +425,8 @@ class RequestsTests(SimpleTestCase):
         Multipart POST requests with Content-Length >= 0 are valid and need to
         be handled.
         """
-        # According to:
-        # https://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.13
-        # Every request.POST with Content-Length >= 0 is a valid request,
-        # this test ensures that we handle Content-Length == 0.
+        # According to RFC 9110 Section 8.6 every POST with Content-Length >= 0
+        # is a valid request, so ensure that we handle Content-Length == 0.
         payload = FakePayload(
             "\r\n".join(
                 [
diff --git a/tests/test_client/views.py b/tests/test_client/views.py
index 01850257b5..494844009d 100644
--- a/tests/test_client/views.py
+++ b/tests/test_client/views.py
@@ -395,8 +395,7 @@ def django_project_redirect(request):
 
 def no_trailing_slash_external_redirect(request):
     """
-    RFC 2616 3.2.2: A bare domain without any abs_path element should be
-    treated as having the trailing `/`.
+    RFC 3986 Section 6.2.3: Empty path should be normalized to "/".
 
     Use https://testserver, rather than an external domain, in order to allow
     use of follow=True, triggering Client._handle_redirects().
diff --git a/tests/utils_tests/test_http.py b/tests/utils_tests/test_http.py
index 9978c7bb52..add9625685 100644
--- a/tests/utils_tests/test_http.py
+++ b/tests/utils_tests/test_http.py
@@ -329,7 +329,7 @@ class ETagProcessingTests(unittest.TestCase):
         )
         self.assertEqual(parse_etags("*"), ["*"])
 
-        # Ignore RFC 2616 ETags that are invalid according to RFC 7232.
+        # Ignore RFC 2616 ETags that are invalid according to RFC 9110.
         self.assertEqual(parse_etags(r'"etag", "e\"t\"ag"'), ['"etag"'])
 
     def test_quoting(self):
diff --git a/tests/utils_tests/test_ipv6.py b/tests/utils_tests/test_ipv6.py
index b41778693d..bf78ed91c0 100644
--- a/tests/utils_tests/test_ipv6.py
+++ b/tests/utils_tests/test_ipv6.py
@@ -32,7 +32,7 @@ class TestUtilsIPv6(unittest.TestCase):
         self.assertFalse(is_valid_ipv6_address("::ffff:999.42.16.14"))
         self.assertFalse(is_valid_ipv6_address("::ffff:zzzz:0a0a"))
         # The ::1.2.3.4 format used to be valid but was deprecated
-        # in rfc4291 section 2.5.5.1
+        # in RFC 4291 section 2.5.5.1.
         self.assertTrue(is_valid_ipv6_address("::254.42.16.14"))
         self.assertTrue(is_valid_ipv6_address("::0a0a:0a0a"))
         self.assertFalse(is_valid_ipv6_address("::999.42.16.14"))
diff --git a/tests/view_tests/tests/test_static.py b/tests/view_tests/tests/test_static.py
index 003e229859..9c873b447f 100644
--- a/tests/view_tests/tests/test_static.py
+++ b/tests/view_tests/tests/test_static.py
@@ -83,7 +83,7 @@ class StaticTests(SimpleTestCase):
         """Handle bogus If-Modified-Since values gracefully
 
         Assume that a file is modified since an invalid timestamp as per RFC
-        2616, section 14.25.
+        9110 Section 13.1.3.
         """
         file_name = "file.txt"
         invalid_date = "Mon, 28 May 999999999999 28:25:26 GMT"
@@ -99,7 +99,7 @@ class StaticTests(SimpleTestCase):
         """Handle even more bogus If-Modified-Since values gracefully
 
         Assume that a file is modified since an invalid timestamp as per RFC
-        2616, section 14.25.
+        9110 Section 13.1.3.
         """
         file_name = "file.txt"
         invalid_date = ": 1291108438, Wed, 20 Oct 2010 14:05:00 GMT"