Add test capturing expectation where versionless metadata exists but hasn't been updated to the new normalization technique. Ref #261.

Author: jaraco

tests/fixtures.py

@@ -127,6 +127,12 @@ class DistInfoPkgWithDotLegacy(OnSysPath, SiteDir):
                 Version: 1.0.0
                 """,
             },
+        "pkg.lot.egg-info": {
+            "METADATA": """
+                Name: pkg.lot
+                Version: 1.0.0
+                """,
+            },
         }
 
     def setUp(self):

tests/test_api.py

@@ -174,6 +174,12 @@ def test_name_normalization(self):
             with self.subTest(name):
                 assert distribution(name).metadata['Name'] == 'pkg.dot'
 
+    def test_name_normalization_versionless_egg_info(self):
+        names = 'pkg.lot', 'pkg_lot', 'pkg-lot', 'pkg..lot', 'Pkg.Lot'
+        for name in names:
+            with self.subTest(name):
+                assert distribution(name).metadata['Name'] == 'pkg.lot'
+
 
 class OffSysPathTests(fixtures.DistInfoPkgOffPath, unittest.TestCase):
     def test_find_distributions_specified_path(self):