Taken from upstream: https://github.com/pdoc3/pdoc/commit/4aa70de2221a34a3003a7e5f52a9b91965f0e359.patch.

From 4aa70de2221a34a3003a7e5f52a9b91965f0e359 Mon Sep 17 00:00:00 2001
From: Spencer Baugh <sbaugh@catern.com>
Date: Thu, 23 Sep 2021 09:00:25 -0400
Subject: [PATCH] TST: use explicit ClassWithNew instead of typing.Generic

typing.Generic doesn't have a __new__ method in 3.9.

Fixes https://github.com/pdoc3/pdoc/issues/355
---
 pdoc/test/__init__.py | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/pdoc/test/__init__.py b/pdoc/test/__init__.py
index e8c3d94..8b67ab7 100644
--- a/pdoc/test/__init__.py
+++ b/pdoc/test/__init__.py
@@ -1043,16 +1043,20 @@ class C2:
 
         self.assertEqual(pdoc.Class('C2', mod, C2).params(), ['a', 'b', 'c=None', '*', 'd=1', 'e'])
 
-        class G(typing.Generic[T]):
+        class ClassWithNew:
+            def __new__(self, arg):
+                pass
+
+        class G(ClassWithNew):
             def __init__(self, a, b, c=100):
                 pass
 
         self.assertEqual(pdoc.Class('G', mod, G).params(), ['a', 'b', 'c=100'])
 
-        class G2(typing.Generic[T]):
+        class G2(ClassWithNew):
             pass
 
-        self.assertEqual(pdoc.Class('G2', mod, G2).params(), ['*args', '**kwds'])
+        self.assertEqual(pdoc.Class('G2', mod, G2).params(), ['arg'])
 
     def test_url(self):
         mod = pdoc.Module(EXAMPLE_MODULE)
ts/guix-graph.sh?id=efb386dd3a4aa736d8d26cc02b2c1bb78ca915a0'>diff</a></td><td class='form'><form class='right' method='get' action='/guix/log/tests/guix-graph.sh'>
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<option value='grep'>log msg</option>
<option value='author'>author</option>
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<input class='txt' type='search' size='10' name='q' value=''/>
<input type='submit' value='search'/>
</form>
</td></tr></table>
<div class='path'>path: <a href='/guix/log/?id=efb386dd3a4aa736d8d26cc02b2c1bb78ca915a0'>root</a>/<a href='/guix/log/tests?id=efb386dd3a4aa736d8d26cc02b2c1bb78ca915a0'>tests</a>/<a href='/guix/log/tests/guix-graph.sh?id=efb386dd3a4aa736d8d26cc02b2c1bb78ca915a0'>guix-graph.sh</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/guix/log/tests/guix-graph.sh?id=efb386dd3a4aa736d8d26cc02b2c1bb78ca915a0&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2023-09-26 17:36:57 +0200'>2023-09-26</span></td><td><a href='/guix/commit/tests/guix-graph.sh?id=7f3ebd6dbcae830e60b78d6bab8f1dbad90ba3a8'>tests: Adjust ‘guix graph --path’ test to latest Emacs changes.</a><span class='msg-avail'>...<span class='msg-tooltip'>This is a followup to 3349a50d700a2112a31ac4ce6cc6639d3b4cf1e2.

* tests/guix-graph.sh: Adjust ‘path’.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2023-04-28 19:50:39 +0200'>2023-04-28</span></td><td><a href='/guix/commit/tests/guix-graph.sh?id=ee88acc6e22595bbf4a6f07332ed4308d6a6e3cf'>tests: guix-graph.sh: Fix expected path from emacs to libffi.</a><span class='msg-avail'>...<span class='msg-tooltip'>* tests/guix-graph.sh: Change the expected path from emacs to libffi.  `guix
graph --path` outputs only one possible path, and the one it outputs for this
case has changed.

Signed-off-by: Ludovic Courtès &lt;ludo@gnu.org&gt;
</span></span></td><td>Josselin Poiret</td></tr>
<tr><td><span title='2023-04-21 16:16:38 +0200'>2023-04-21</span></td><td><a href='/guix/commit/tests/guix-graph.sh?id=37dd69b44511dc73eb04bdebe8d82c9a0386338e'>tests: Fix checks for expected failures.</a><span class='msg-avail'>...<span class='msg-tooltip'>Addresses &lt;https://issues.guix.gnu.org/62406&gt;.

With 'set -e', a return status inverted with '!' does not cause the shell to
exit immediately.  Instead use '&amp;&amp; false' to indicate an expected failure.

* tests/guix-archive.sh, tests/guix-build-branch.sh, tests/guix-build.sh,
tests/guix-daemon.sh, tests/guix-download.sh,
tests/guix-environment-container.sh, tests/guix-environment.sh,
tests/guix-gc.sh, tests/guix-git-authenticate.sh, tests/guix-graph.sh,
tests/guix-hash.sh, tests/guix-home.sh, tests/guix-pack-relocatable.sh,
tests/guix-pack.sh, tests/guix-package-aliases.sh, tests/guix-package-net.sh,
tests/guix-package.sh, tests/guix-refresh.sh, tests/guix-shell.sh,
tests/guix-style.sh, tests/guix-system.sh: Replace uses of '! ...' with
'... &amp;&amp; false' or `test ! ...` as appropriate.

Signed-off-by: Ludovic Courtès &lt;ludo@gnu.org&gt;
</span></span></td><td>Eric Bavier</td></tr>