Fix and add test cases

Author: tiran

Lib/test/test_importlib/import_/test_path.py

@@ -202,10 +202,10 @@ def __init__(self):
             def invalidate_caches(self):
                 self.called = True
 
-        cache = {'leave_alone': object(), 'finder_to_invalidate': FakeFinder()}
+        cache = {'leave_alone': object(), '/finder_to_invalidate': FakeFinder()}
         with util.import_state(path_importer_cache=cache):
             self.machinery.PathFinder.invalidate_caches()
-        self.assertTrue(cache['finder_to_invalidate'].called)
+        self.assertTrue(cache['/finder_to_invalidate'].called)
 
     def test_invalidate_caches_clear_out_None(self):
         # Clear out None in sys.path_importer_cache() when invalidating caches.
@@ -214,6 +214,16 @@ def test_invalidate_caches_clear_out_None(self):
             self.machinery.PathFinder.invalidate_caches()
         self.assertEqual(len(cache), 0)
 
+    def test_invalidate_caches_clear_out_relative_path(self):
+        class FakeFinder:
+            def invalidate_caches(self):
+                pass
+
+        cache = {'relative_path': FakeFinder()}
+        with util.import_state(path_importer_cache=cache):
+            self.machinery.PathFinder.invalidate_caches()
+        self.assertEqual(cache, {})
+
 
 class FindModuleTests(FinderTests):
     def find(self, *args, **kwargs):

Lib/test/test_importlib/test_api.py

@@ -396,7 +396,7 @@ def find_module(self, *args):
             def invalidate_caches(self):
                 self.called = True
 
-        key = 'gobledeegook'
+        key = '/gobledeegook'
         meta_ins = InvalidatingNullFinder()
         path_ins = InvalidatingNullFinder()
         sys.meta_path.insert(0, meta_ins)