Skip test on Android

Author: encukou

Doc/library/tempfile.rst

@@ -213,7 +213,7 @@ The module defines the following user-callable items:
       Files outside of the tree may have their permissions and file flags reset.
 
       On systems where :data:`shutil.rmtree.avoids_symlink_attacks` is
-      false, manipulating symbolic links during cleanup
+      false, and on Android, manipulating symbolic links during cleanup
       may cause files outside of the tree to be removed.
 
    .. audit-event:: tempfile.mkdtemp fullpath tempfile.TemporaryDirectory

Lib/test/test_tempfile.py

@@ -2141,6 +2141,9 @@ def test_delete_false(self):
         'regression test for supported platforms')
     @unittest.skipIf(support.MS_WINDOWS, 'dirfd not used on Windows')
     @unittest.skipIf(support.is_wasi, 'WASI has no chmod')
+    @unittest.skipIf(
+        sys.platform == "android",
+        "On Android, os.chmod doesn't support dir_fd until API level 23")
     def test_cleanup_safe(self):
         """Verify that cleanup uses the safer code path"""
         # This is a regression test. Feel free to add exceptions for new