Remove usage relying on deprecated and ambiguous leading slash. Ref #1635

pkg_resources/__init__.py

@@ -1932,7 +1932,7 @@ def find_eggs_in_zip(importer, path_item, only=False):
     if only:
         # don't yield nested distros
         return
-    for subitem in metadata.resource_listdir('/'):
+    for subitem in metadata.resource_listdir(''):
         if _is_egg_path(subitem):
             subpath = os.path.join(path_item, subitem)
             dists = find_eggs_in_zip(zipimport.zipimporter(subpath), subpath)

pkg_resources/tests/test_pkg_resources.py

@@ -93,7 +93,6 @@ class TestZipProvider:
 
         expected_root = ['data.dat', 'mod.py', 'subdir']
         assert sorted(zp.resource_listdir('')) == expected_root
-        assert sorted(zp.resource_listdir('/')) == expected_root
 
         expected_subdir = ['data2.dat', 'mod2.py']
         assert sorted(zp.resource_listdir('subdir')) == expected_subdir
@@ -106,7 +105,6 @@ class TestZipProvider:
         zp2 = pkg_resources.ZipProvider(mod2)
 
         assert sorted(zp2.resource_listdir('')) == expected_subdir
-        assert sorted(zp2.resource_listdir('/')) == expected_subdir
 
         assert zp2.resource_listdir('subdir') == []
         assert zp2.resource_listdir('subdir/') == []