bpo-40280: Skip more tests on Emscripten (GH-31947)

- lchmod, lchown are not fully implemented
- skip umask tests
- cannot fstat unlinked or renamed files yet
- ignore musl libc issues that affect Emscripten

1 files changed, 2 insertions, 1 deletions

diff --git a/Lib/test/test_ntpath.py b/Lib/test/test_ntpath.py
index 99a77e3..7211ed8 100644
--- a/Lib/test/test_ntpath.py
+++ b/Lib/test/test_ntpath.py
@@ -4,7 +4,7 @@ import sys
 import unittest
 import warnings
 from test.support import os_helper
-from test.support import TestFailed
+from test.support import TestFailed, is_emscripten
 from test.support.os_helper import FakePath
 from test import test_genericpath
 from tempfile import TemporaryFile
@@ -747,6 +747,7 @@ class TestNtpath(NtpathTestCase):
         self.assertRaises(TypeError, ntpath.commonpath,
                           ['Program Files', b'C:\\Program Files\\Foo'])
 
+    @unittest.skipIf(is_emscripten, "Emscripten cannot fstat unnamed files.")
     def test_sameopenfile(self):
         with TemporaryFile() as tf1, TemporaryFile() as tf2:
             # Make sure the same file is really the same