Merge pull request datalad#4234 from mih/tst-openfiles

TST: Relax get_open_files() test on Windows due to performance issues.

Author: mih

datalad/tests/test_utils.py

@@ -1190,6 +1190,16 @@ def test_get_open_files(p):
             os.getpid())
 
     assert not get_open_files(subd)
+
+    if on_windows:
+        # the remainder of the test assume a certain performance.
+        # however, on windows get_open_files() can be very slow
+        # (e.g. the first invocation in this test (above) can easily
+        # take 30-50s). It is not worth slowing the tests to
+        # accomodate this issue, given we have tested proper functioning
+        # in principle already above).
+        return
+
     # if we start a process within that directory, should get informed
     from subprocess import Popen, PIPE
     from time import time

datalad/utils.py

@@ -446,6 +446,8 @@ def rmdir(path, *args, **kwargs):
 def get_open_files(path, log_open=False):
     """Get open files under a path
 
+    Note: This function is very slow on Windows.
+
     Parameters
     ----------
     path : str