diff --git a/golem_resource/models/golem_resource.py b/golem_resource/models/golem_resource.py
index 1afd6160..092a8129 100644
--- a/golem_resource/models/golem_resource.py
+++ b/golem_resource/models/golem_resource.py
@@ -19,6 +19,7 @@
 """ GOLEM Resources management """
 
 from odoo import models, fields, api
+from odoo.exceptions import ValidationError
 
 
 class GolemResource(models.Model):
@@ -30,7 +31,7 @@ class GolemResource(models.Model):
 
     name = fields.Char(required=True, index=True)
     active = fields.Boolean(default=True)
-    validation_required = fields.Boolean(default=True,
+    validation_required = fields.Boolean(default=False,
                                          string='Is validation required ?')
     type_id = fields.Many2one('golem.resource.type',
                               index=True, string='Resource Type')
@@ -53,3 +54,11 @@ class GolemResource(models.Model):
         """ Toggles active boolean """
         for resource in self:
             resource.active = not resource.active
+
+    @api.constrains('avaibility_start', 'avaibility_stop')
+    def _check_date_consistency(self):
+        """ Checks date consistency """
+        for resource in self:
+            if resource.avaibility_stop <= resource.avaibility_start:
+                raise ValidationError(_('End availibility should be after than '
+                                        'start availibility'))
diff --git a/golem_resource/tests/__init__.py b/golem_resource/tests/__init__.py
new file mode 100644
index 00000000..4eb2e865
--- /dev/null
+++ b/golem_resource/tests/__init__.py
@@ -0,0 +1,19 @@
+# -*- coding: utf-8 -*-
+
+#    Copyright 2018 Youssef El Ouahby <youssef@yaltik.com>
+#    Copyright 2018 Fabien Bourgeois <fabien@yaltik.com>
+#
+#    This program is free software: you can redistribute it and/or modify
+#    it under the terms of the GNU Affero General Public License as
+#    published by the Free Software Foundation, either version 3 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 Affero General Public License for more details.
+#
+#    You should have received a copy of the GNU Affero General Public License
+#    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+from . import test_golem_resource, test_golem_resource_timetable
diff --git a/golem_resource/tests/test_golem_resource.py b/golem_resource/tests/test_golem_resource.py
new file mode 100644
index 00000000..903b83d9
--- /dev/null
+++ b/golem_resource/tests/test_golem_resource.py
@@ -0,0 +1,69 @@
+# -*- coding: utf-8 -*-
+
+#    Copyright 2018 Youssef El Ouahby <youssef@yaltik.com>
+#    Copyright 2018 Fabien Bourgeois <fabien@yaltik.com>
+#
+#    This program is free software: you can redistribute it and/or modify
+#    it under the terms of the GNU Affero General Public License as
+#    published by the Free Software Foundation, either version 3 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 Affero General Public License for more details.
+#
+#    You should have received a copy of the GNU Affero General Public License
+#    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+""" GOLEM Resource testing """
+
+from odoo.tests.common import TransactionCase
+from odoo.exceptions import ValidationError
+
+
+class TestGolemResource(TransactionCase):
+    """ GOLEM Resource testing """
+
+    def setUp(self, *args, **kwargs):
+        """ Bootstrap Resource """
+        super(TestGolemResource, self).setUp(*args, **kwargs)
+        self.data = {
+            'name': 'Resource',
+            'avaibility_start': '2018-01-01',
+            'avaibility_stop': '2020-01-01'
+        }
+        self.resource = self.env['golem.resource']
+
+    def test_resource_basic(self):
+        """ Test resource bases """
+        resource = self.resource.create(self.data)
+        self.assertTrue(resource.active)
+        self.assertFalse(resource.validation_required)
+        self.assertEqual(resource.avaibility_start, '2018-01-01')
+        self.assertEqual(resource.avaibility_stop, '2020-01-01')
+        self.assertFalse(resource.supervisor_id)
+        self.assertFalse(resource.product_tmpl_id)
+        self.assertFalse(resource.timetable_ids)
+        self.assertFalse(resource.reservation_ids)
+
+    def test_resource_active(self):
+        """ Test resource active """
+        resource = self.resource.create(self.data)
+        self.assertTrue(resource.active)
+        resource.active_toggle()
+        self.assertFalse(resource.active)
+        resource.active_toggle()
+        self.assertTrue(resource.active)
+
+    def test_resource_dates(self):
+        """ Test resource dates : stop can not be after start """
+        self.data.update({'avaibility_stop': '2017-01-01'})
+        with self.assertRaises(ValidationError):
+            self.resource.create(self.data)
+
+    def test_resource_dates_equal(self):
+        """ Test resource dates : stop can not be equal to start """
+        self.data.update({'avaibility_stop': self.data['avaibility_start']})
+        with self.assertRaises(ValidationError):
+            self.resource.create(self.data)