diff -r 351dab28bb15 -r cde349864894 src/pyams_utils/zmi/zeo.py
--- a/src/pyams_utils/zmi/zeo.py	Thu Apr 21 17:14:48 2016 +0200
+++ b/src/pyams_utils/zmi/zeo.py	Tue May 10 16:44:27 2016 +0200
@@ -14,10 +14,14 @@
 
 
 # import standard library
+import pprint
+import sys
+import traceback
 
 # import interfaces
+from pyams_form.interfaces.form import IWidgetsSuffixViewletsManager
 from pyams_skin.interfaces.container import ITableElementName
-from pyams_skin.interfaces.viewlet import IToolbarAddingMenu
+from pyams_skin.interfaces.viewlet import IToolbarAddingMenu, ITableItemColumnActionsMenu
 from pyams_skin.layer import IPyAMSLayer
 from pyams_utils.interfaces import VIEW_SYSTEM_PERMISSION, MANAGE_SYSTEM_PERMISSION
 from pyams_utils.interfaces.zeo import IZEOConnection
@@ -27,19 +31,21 @@
 
 # import packages
 from pyams_form.form import AJAXAddForm, AJAXEditForm
+from pyams_form.schema import CloseButton
 from pyams_pagelet.pagelet import pagelet_config
 from pyams_skin.viewlet.toolbar import ToolbarMenuItem
+from pyams_template.template import template_config
 from pyams_utils.adapter import adapter_config, ContextRequestAdapter
 from pyams_utils.registry import query_utility
 from pyams_utils.url import absolute_url
 from pyams_utils.zodb import ZEOConnectionUtility
-from pyams_viewlet.viewlet import viewlet_config
+from pyams_viewlet.viewlet import viewlet_config, Viewlet
 from pyams_zmi.control_panel import UtilitiesTable
 from pyams_zmi.form import AdminDialogAddForm, AdminDialogEditForm
 from pyramid.events import subscriber
 from pyramid.view import view_config
-from z3c.form import field
-from zope.interface import Invalid
+from z3c.form import field, button
+from zope.interface import Interface, Invalid
 
 from pyams_utils import _
 
@@ -133,3 +139,93 @@
              permission=MANAGE_SYSTEM_PERMISSION, renderer='json', xhr=True)
 class ZEOConnectionPropertiesAJAXEditForm(AJAXEditForm, ZEOConnectionPropertiesEditForm):
     """ZEO connection properties edit form, AJAX view"""
+
+
+#
+# ZEO connection test form
+#
+
+@viewlet_config(name='test-connection.menu', context=IZEOConnection, layer=IAdminLayer,
+                view=UtilitiesTable, manager=ITableItemColumnActionsMenu, permission=MANAGE_SYSTEM_PERMISSION)
+class ZEOConnectionTestMenu(ToolbarMenuItem):
+    """ZEO connection test menu"""
+
+    label = _("Test ZEO connection...")
+    label_css_class = 'fa fa-fw fa-database'
+    url = 'test-connection.html'
+    modal_target = True
+    stop_propagation = True
+
+
+class IZEOConnectionTestButtons(Interface):
+    """ZEO connection test buttons"""
+
+    close = CloseButton(name='close', title=_("Close"))
+    test = button.Button(name='test', title=_("Test connection"))
+
+
+@pagelet_config(name='test-connection.html', context=IZEOConnection, layer=IPyAMSLayer,
+                permission=MANAGE_SYSTEM_PERMISSION)
+class ZEOConnectionTestForm(AdminDialogAddForm):
+    """ZEO connection test form"""
+
+    @property
+    def title(self):
+        translate = self.request.localizer.translate
+        return translate(_("ZEO connection: {0}")).format(self.context.name)
+
+    legend = _("Test ZEO database connection")
+    icon_css_class = 'fa fa-fw fa-database'
+
+    prefix = 'test_form.'
+    fields = field.Fields(Interface)
+    buttons = button.Buttons(IZEOConnectionTestButtons)
+    ajax_handler = 'test-connection.json'
+    edit_permission = MANAGE_SYSTEM_PERMISSION
+
+    @property
+    def form_target(self):
+        return '#{0}_test_result'.format(self.id)
+
+    def updateActions(self):
+        super(ZEOConnectionTestForm, self).updateActions()
+        if 'test' in self.actions:
+            self.actions['test'].addClass('btn-primary')
+
+    def createAndAdd(self, data):
+        try:
+            self.context.get_connection()
+        except:
+            typ, value, tb = sys.exc_info()
+            return 500, (typ, value, tb)
+        else:
+            return 200, 'OK - ZEO connection successful'
+
+
+@viewlet_config(name='test-connection.suffix', layer=IAdminLayer, manager=IWidgetsSuffixViewletsManager,
+                view=ZEOConnectionTestForm, weight=50)
+@template_config(template='templates/connection-test.pt')
+class ZEOConnectionTestFormSuffix(Viewlet):
+    """ZEO connection test form suffix"""
+
+
+@view_config(name='test-connection.json', context=IZEOConnection, request_type=IPyAMSLayer,
+             permission=MANAGE_SYSTEM_PERMISSION, renderer='json', xhr=True)
+class ZEOConnectionAJAXTestForm(AJAXAddForm, ZEOConnectionTestForm):
+    """ZEO connection test form, JSON renderer"""
+
+    def get_ajax_output(self, changes):
+        settings = '{0}\n\n'.format(pprint.pformat(self.context.get_settings()))
+        status, arguments = changes
+        if status == 200:
+            return {'status': 'success',
+                    'content': {'html': '{0}<br />{1}'.format(settings, arguments)},
+                    'close_form': False}
+        else:
+            typ, value, tb = arguments
+            message = 'An error occurred: {type}<br />{message}'.format(type=typ,
+                                                                        message='<br />'.join(
+                                                                            traceback.format_exception(typ, value, tb)))
+            return {'status': 'info',
+                    'content': {'html': '{0}<br />{1}'.format(settings, message)},
+                    'close_form': False}