bpo-31904: Fix test_os.test_getcwd_long_path() failure for VxWorks (GH-20256)

Author: pxinwr

Lib/test/test_os.py

@@ -116,6 +116,10 @@ def test_getcwd_long_path(self):
  # than MAX_PATH if long paths support is disabled:
  # see RtlAreLongPathsEnabled().
  min_len = 2000 # characters
+ # On VxWorks, PATH_MAX is defined as 1024 bytes. Creating a path
+ # longer than PATH_MAX will fail.
+ if sys.platform == 'vxworks':
+ min_len = 1000
  dirlen = 200 # characters
  dirname = 'python_test_dir_'
  dirname = dirname + ('a' * (dirlen - len(dirname)))

Misc/NEWS.d/next/Tests/2020-05-20-17-28-46.bpo-31904.yt83Ge.rst

@@ -0,0 +1 @@
+Fix os module failures for VxWorks RTOS.