diff -r ce366d67a5b7 -r 24fbd4d1fe80 tests/tools/conftest.py
--- a/tests/tools/conftest.py	Sat Mar 05 11:14:00 2022 +0100
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,78 +0,0 @@
-#!/usr/bin/env python
-# -*- coding: utf-8 -*-
-
-# This file is part of Beremiz, a Integrated Development Environment for
-# programming IEC 61131-3 automates supporting plcopen standard and CanFestival.
-#
-# Copyright (C) 2017: Andrey Skvortsov
-#
-# See COPYING file for copyrights details.
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software
-# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
-
-
-from __future__ import absolute_import
-import os
-import sys
-
-# import pytest
-# import xvfbwrapper
-
-
-def init_environment():
-    """Append module root directory to sys.path"""
-    try:
-        import Beremiz as _Beremiz
-    except ImportError:
-        sys.path.append(
-            os.path.abspath(
-                os.path.join(
-                    os.path.dirname(__file__), '..', '..')
-            )
-        )
-
-
-init_environment()
-
-#
-# Something seems to be broken in Beremiz application,
-# because after tests in test_application.py during Xvfb shutdown
-# pytest returns error message:
-# pytest: Fatal IO error 11 (Die Ressource ist zur Zeit nicht verfügbar) on X server :2821.
-#
-# As a result of that pytest returns code 1 as some tests were failed,
-# but they aren't.
-#
-# To avoid this Xvfb is launched and killed not by pytest.
-# $ Xvfb :42 -screen 0 1280x1024x24 &
-# $ export DISPLAY=:42
-# $ pytest --timeout=10 ./tests/tools
-# $ pkill -9 Xvfb
-#
-# TODO: find root of this problem.
-
-
-# vdisplay = None
-#
-# @pytest.fixture(scope="session", autouse=True)
-# def start_xvfb_server(request):
-#     global vdisplay
-#     vdisplay = xvfbwrapper.Xvfb(width=1280, height=720)
-#     vdisplay.start()
-#     request.addfinalizer(stop_xvfb_server)
-#
-# def stop_xvfb_server():
-#     if vdisplay is not None:
-#         vdisplay.stop()