From 0db550c38ad9ba4ab4fb6fa8c070c040935e2f33 Mon Sep 17 00:00:00 2001
From: "Jason R. Coombs" <jaraco@jaraco.com>
Date: Wed, 20 Mar 2024 06:20:54 -0400
Subject: [PATCH] Consolidated test support logic in jaraco.test.cpython.

---
 importlib_resources/tests/compat/py39.py | 30 ++++--------------------
 setup.cfg                                |  2 +-
 2 files changed, 6 insertions(+), 26 deletions(-)

diff --git a/importlib_resources/tests/compat/py39.py b/importlib_resources/tests/compat/py39.py
index 81ec9aa..e158eb8 100644
--- a/importlib_resources/tests/compat/py39.py
+++ b/importlib_resources/tests/compat/py39.py
@@ -2,29 +2,9 @@
 Backward-compatability shims to support Python 3.9 and earlier.
 """
 
-import types
+from jaraco.test.cpython import from_test_support, try_import
 
-from jaraco.collections import Projection
-
-
-def from_test_support(*names):
-    """
-    Return a SimpleNamespace of names from test.support.
-    """
-    import test.support
-
-    return types.SimpleNamespace(**Projection(names, vars(test.support)))
-
-
-try:
-    from test.support import import_helper  # type: ignore
-except ImportError:
-    import_helper = from_test_support(
-        'modules_setup', 'modules_cleanup', 'DirsOnSysPath'
-    )
-
-
-try:
-    from test.support import os_helper  # type: ignore
-except ImportError:
-    os_helper = from_test_support('temp_dir')
+import_helper = try_import('import_helper') or from_test_support(
+    'modules_setup', 'modules_cleanup', 'DirsOnSysPath'
+)
+os_helper = try_import('os_helper') or from_test_support('temp_dir')
diff --git a/setup.cfg b/setup.cfg
index feef590..e684c20 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -34,7 +34,7 @@ testing =
 
 	# local
 	zipp >= 3.17
-	jaraco.collections
+	jaraco.test >= 5.4
 
 docs =
 	# upstream