doc: Document manager core unit tests

Fixes: https://tracker.ceph.com/issues/40363
Signed-off-by: Stephan Müller <smueller@suse.com>

diff --git a/doc/dev/developer_guide/index.rst b/doc/dev/developer_guide/index.rst
index 419a361f9af2b31bb7cf55fe6697702b68cdecca..10beb96067b80d096bb301df06ce4d0a3140c72f 100644 (file)
--- a/doc/dev/developer_guide/index.rst
+++ b/doc/dev/developer_guide/index.rst
@@ -828,6 +828,17 @@ Here some examples from ceph dashboard on how to specify different environments
   $ ../../../script/run_tox.sh --tox-env py27,py3,lint,check
   $ ../../../script/run_tox.sh --tox-env py3,lint,check
 
+Manager core unit tests
+"""""""""""""""""""""""
+
+Currently only doctests_ inside
+``mgr_util.py`` are run.
+
+To add more files that should be tested inside the core of the manager add them at the end
+of the line that includes ``mgr_util.py`` inside ``tox.ini``.
+
+.. _doctests: https://docs.python.org/3/library/doctest.html
+
 Unit test caveats
 -----------------