diff --git a/Development.md b/Development.md
index 9f42561..b81d8d0 100644
--- a/Development.md
+++ b/Development.md
@@ -27,8 +27,29 @@ Same goes for zfs-autoverify:
 ZfsAutoverify.py v3.2-alpha1 - (c)2021 E.H.Eefting (edwin@datux.nl)
 ```
 
+## Running automated test suites
+
+zfs-autobackup is a test driven design process, usually i start with creating the test and then writing the code.
+
+The tests run against actual zfs commands and create a lot of temporary pools via loopback-images in the /tmp dir. Therefore the tests need root to run.
+
+The tests also need ssh support via root@localhost, so it will create and install a sshkey if needed.
 
 
 
+```console
+(backupdev) root@ws1:/home/psy/zfs_autobackup# ./tests/run_tests 
+###########################################
+#### Unit testing against:
+#### Python                :3.8.10 (default, Nov 26 2021, 20:14:08)  [GCC 9.3.0]
+#### ZFS userspace         :2.1.1-0york0~20.04
+#### ZFS kernel            :2.1.1-0york0~20.04
+#############################################
+THIS TEST REQUIRES SSH TO LOCALHOST
+test_exitcode (test_cmdpipe.TestCmdPipe)
+test piped exitcodes ... ok
+...
+```
+