close open filehandles. more tests

basetest.py

@@ -1,3 +1,5 @@
+
+
 import subprocess
 import random
 
@@ -9,6 +11,8 @@ from pprint import *
 from bin.zfs_autobackup import *
 
 
+
+
 def shelltest(cmd):
     """execute and print result as nice copypastable string for unit tests (adds extra newlines on top/bottom)"""
     ret=(subprocess.check_output(cmd , shell=True).decode('utf-8'))