initial checkin of object write permission regression tests
diff --git a/planetstack/tests/permissiontest.py b/planetstack/tests/permissiontest.py
new file mode 100644
index 0000000..191eae6
--- /dev/null
+++ b/planetstack/tests/permissiontest.py
@@ -0,0 +1,170 @@
+import unittest
+from core.models import *
+
+class TestPermission(unittest.TestCase):
+    
+    def setUp(self):
+        self.test_objects = []
+        # deployment
+        self.deployment = Deployment(name='TestDeployment')
+        self.deployment.save()
+        self.test_objects.append(self.deployment)
+        # site
+        self.site = Site(name='TestSite')
+        self.site.save()
+        self.test_objects.append(self.site)
+        # site deployment
+        self.site_deployment = SiteDeployment(site=self.site, deployment=self.deployment)
+        self.site_deployment.save()
+        self.test_objects.append(self.site_deployment)
+        # node
+        self.node = Node(name='TestNode', site_deployment=self.site_deployment)
+        self.node.save()
+        self.test_objects.append(self.node)
+        # slice
+        self.slice = Slice(name='TestSlice', site=self.site)
+        self.slice.save()
+        self.test_objects.appen(slice.slice)
+        # admin user
+        self.user_admin = User(email='user_admin@test.com', first_name='Test', last_name='Test', is_admin=True)
+        self.user_admin.site = self.site
+        self.user_admin.save()
+        self.test_objects.append(self.user_admin)
+        # read only user
+        self.user_read_only = User(email='user_read_only@test.com', first_name='Test', last_name='Test')
+        self.user_read_only.site = self.site
+        self.user_read_only.save()
+        self.test_objects.append(self.user_read_only)
+        # default user
+        self.user_default = User(email='user_default@test.com', first_name='Test', last_name='Test')
+        self.user_default.site = self.site 
+        self.user_default.save()
+        self.test_objects.append(self.user_default)
+
+        # deployment admin 
+        self.user_deployment_admin = User(email='user_deployment_admin@test.com', first_name='Test', last_name='Test')
+        self.user_deployment_admin.site = self.site
+        self.user_deployment_admin.save()
+        self.test_objects.append(self.user_deployment_admin)
+        deployment_privilege = DeploymentPrivilege(
+            user=self.user_deployment_admin,
+            deployment=self.deployment,
+            role='admin')
+        deployment_privilege.save()
+        self.test_objects.append(deployment_privilege)
+        # site admin
+        self.user_site_admin = User(email='user_site_admin@test.com', first_name='Test', last_name='Test')
+        self.user_site_admin = self.site
+        self.user_site_admin.save()
+        self.test_objects.append(self.user_site_admin)
+        site_admin_privilege = SitePrivilege(
+            user = self.user_site_admin,
+            site=self.site,
+            role='admin')
+        site_admin_privilege.save()
+        self.test_objects.append(site_admin_privilege)
+        # site pi
+        self.user_site_pi = User(email='user_site_pi@test.com', first_name='Test', last_name='Test')
+        self.user_site_pi = self.site
+        self.user_site_pi.save()
+        self.test_objects.append(self.user_site_pi)
+        site_pi_privilege = SitePrivilege(
+            user = self.user_site_pi,
+            site=self.site,
+            role='pi')
+        site_pi_privilege.save()
+        self.test_objects.append(site_pi_privilege)
+        # site tech
+        self.user_site_tech = User(email='user_site_tech@test.com', first_name='Test', last_name='Test')
+        self.user_site_tech = self.site
+        self.user_site_tech.save()
+        self.test_objects.append(self.user_site_tech)
+        site_tech_privilege = SitePrivilege(
+            user = self.user_site_tech,
+            site=self.site,
+            role='tech')
+        site_tech_privilege.save()
+        self.test_objects.append(site_tech_privilege)
+        # slice admin
+        self.user_slice_admin = User(email='user_slice_admin@test.com', first_name='Test', last_name='Test')
+        self.user_slice_admin = self.site
+        self.user_slice_admin.save()
+        self.test_objects.append(self.user_slice_admin)
+        slice_admin_privilege = SlicePrivilege(
+            user = self.user_slice_admin,
+            slice = self.slice,
+            role='admin')
+        slice_admin_privilege.save()
+        self.test_objects.append(slice_admin_privilege)
+        # slice access 
+        self.user_slice_access = User(email='user_slice_access@test.com', first_name='Test', last_name='Test')
+        self.user_slice_access = self.site 
+        self.user_slice_access.save()
+        self.test_objects.append(self.user_slice_access)
+        slice_access_privilege = SlicePrivilege(
+            user = self.user_slice_access,
+            slice = self.slice,
+            role='access')
+        slice_access_privilege.save()
+        self.test_objects.append(slice_access_privilege)
+
+
+    def test_deployment(self):
+        for user in [self.user_admin, self.user_deployment_admin]:
+            self.assertEqual(
+                self.deployment.save_by_user(user), None)
+        for user in [self.user_read_only, self.user_default, self.user_site_admin,
+                     self.user_site_pi, self.user_site_tech, self.user_slice_admin,
+                     self.user_slice_access]:
+            self.assertRaises(
+                PermissionDenied, 
+                self.deployment.save_by_user(user,))
+
+    def test_site(self):
+        for user in [self.user_admin, self.user_site_admin, self.user_site_pi]:
+            self.assertEqual(
+                self.site.save_by_user(user), None)
+        for user in [self.user_read_only, self.user_default, self.user_deployment_admin,
+                     self.user_site_tech, self.user_slice_admin, self.user_slice_access]:
+            self.assertRaises(
+                PermissionDenied,
+                self.site.save_by_user(user,))
+    
+    def test_node(self):
+        for user in [self.user_admin, self.user_site_admin, self.user_site_tech]:
+            self.assertEqual(self.node.save_by_user(user), None)
+        for user in [self.user_read_only, self.user_default, self.user_deployment_admin,
+                     self.user_site_pi, self.user_slice_admin, self.user_slice_access]:
+            self.assertRaises(
+                PermissionDenied,
+                self.node.save_by_user(user,))                 
+                                       
+    def test_slice(self):
+        for user in [self.user_admin, self.user_site_admin, self.user_site_pi, 
+                     self.user_slice_admin]:
+            self.assertEqual(
+                self.slice.save_by_user(user), None)
+        for user in [self.user_read_only, self.user_default, self.user_deployment_admin,
+                     self.user_site_tech, self.user_slice_access]:
+            self.assertRaises(
+                PermissionDenied,
+                self.slice.save_by_user(user,))
+            
+    def test_user(self):
+        for user in [self.user_admin, self.user_site_admin, self.user_deployment_admin,
+                     self.user_site_pi, self.user_default]:
+            self.assertEqual(
+                self.user_default.save_by_user(user), None)
+        for user in [self.user_read_only, self.user_deployment_admin, 
+                     self.user_site_tech, self.user_slice_admin, self.user_slice_access]:
+            self.assertRaises(
+                PermissionDenied,
+                self.user_default.save_by_user(user,))                    
+                                 
+         
+    def tearDown(self):
+        for obj in self.test_objects:
+            obj.delete()       
+    
+if __name__ == '__main__':
+    unittest.main()