gh-93259: Validate arg to ``Distribution.from_name``. (GH-94270)

Syncs with importlib_metadata 4.12.0.

1 files changed, 16 insertions, 0 deletions

diff --git a/Lib/test/test_importlib/fixtures.py b/Lib/test/test_importlib/fixtures.py
index 803d373..e7be77b 100644
--- a/Lib/test/test_importlib/fixtures.py
+++ b/Lib/test/test_importlib/fixtures.py
@@ -5,6 +5,7 @@ import shutil
 import pathlib
 import tempfile
 import textwrap
+import functools
 import contextlib
 
 from test.support.os_helper import FS_NONASCII
@@ -296,3 +297,18 @@ class ZipFixtures:
         # Add self.zip_name to the front of sys.path.
         self.resources = contextlib.ExitStack()
         self.addCleanup(self.resources.close)
+
+
+def parameterize(*args_set):
+    """Run test method with a series of parameters."""
+
+    def wrapper(func):
+        @functools.wraps(func)
+        def _inner(self):
+            for args in args_set:
+                with self.subTest(**args):
+                    func(self, **args)
+
+        return _inner
+
+    return wrapper