diff -r 70768bd1dab3 -r 4e3c78a84c64 tests/tools/test_CustomIntCtrl.py
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/tools/test_CustomIntCtrl.py	Fri Sep 15 20:01:21 2017 +0300
@@ -0,0 +1,136 @@
+#!/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.
+
+import unittest
+import wx
+import time
+
+import conftest
+import controls.CustomIntCtrl
+
+
+class TestCustomIntCtrl(unittest.TestCase):
+    def setUp(self):
+        self.app = wx.App()
+        self.frame = wx.Frame(None)
+
+    def tearDown(self):
+        self.frame.Destroy()
+        wx.CallAfter(self.app.Exit)
+        self.app.MainLoop()
+
+    def testMaxLimit(self):
+        """Test working upper bound"""
+        self.AddControls()
+        self.int_ctrl.SetValue(self.max_val + 100)
+        self.ProcessEvents()
+
+        self.txt_ctrl.SetFocus()
+        self.ProcessEvents()
+        self.assertEqual(self.int_ctrl.GetValue(), self.max_val)
+
+    def testMinLimit(self):
+        """Test working lower bound"""
+        self.AddControls()
+        self.int_ctrl.SetValue(self.min_val - 100)
+        self.ProcessEvents()
+
+        self.txt_ctrl.SetFocus()
+        self.ProcessEvents()
+
+        self.assertEqual(self.int_ctrl.GetValue(), self.min_val)
+
+    def testCorrectValue(self):
+        """Test case if no limiting is necessary"""
+        self.AddControls()
+        val = (self.max_val + self.min_val) / 2
+        self.int_ctrl.SetValue(val)
+        self.ProcessEvents()
+
+        self.txt_ctrl.SetFocus()
+        self.ProcessEvents()
+
+        self.assertEqual(self.int_ctrl.GetValue(), val)
+
+    def testEventBinding(self):
+        """Test event sending after edit and bound checks are done"""
+        self.AddControls()
+        self.event_happend = False
+
+        def EventHandler(event):
+            self.event_happend = True
+            event.Skip()
+
+        self.int_ctrl.Bind(controls.CustomIntCtrl.EVT_CUSTOM_INT, EventHandler)
+
+        val = (self.max_val + self.min_val) / 2
+
+        self.int_ctrl.SetValue(val)
+        self.ProcessEvents()
+        self.txt_ctrl.SetFocus()
+
+        self.ProcessEvents()
+        self.txt_ctrl.SetFocus()
+        self.ProcessEvents()
+
+        self.assertEqual(self.int_ctrl.GetValue(), val)
+        self.assertTrue(self.event_happend)
+
+    def testLongNumbers(self):
+        """Test support of long integer"""
+        self.AddControls()
+        val = 40000000000
+        self.int_ctrl.SetMax(val)
+        self.int_ctrl.SetValue(val)
+        self.ProcessEvents()
+
+        self.txt_ctrl.SetFocus()
+        self.ProcessEvents()
+
+        self.assertEqual(val, val)
+
+    def ProcessEvents(self):
+        for i in range(0, 10):
+            wx.Yield()
+            time.sleep(0.01)
+
+    def AddControls(self):
+        vs = wx.BoxSizer(wx.VERTICAL)
+        self.int_ctrl = controls.CustomIntCtrl(self.frame)
+        self.txt_ctrl = wx.TextCtrl(self.frame)
+        vs.Add(self.int_ctrl, 0, wx.ALIGN_CENTRE | wx.ALL, 5)
+        vs.Add(self.txt_ctrl, 0, wx.ALIGN_CENTRE | wx.ALL, 5)
+        self.frame.SetSizer(vs)
+        vs.Fit(self.frame)
+        self.frame.Show()
+        self.frame.Raise()
+
+        self.min_val = 50
+        self.max_val = 100
+        self.int_ctrl.SetBounds(self.min_val, self.max_val)
+        self.ProcessEvents()
+
+
+if __name__ == '__main__':
+    unittest.main()