diff --git a/tests/compute/models/aws/security_group_tests.rb b/tests/compute/models/aws/security_group_tests.rb
index a2707813c..ac7ce4e25 100644
--- a/tests/compute/models/aws/security_group_tests.rb
+++ b/tests/compute/models/aws/security_group_tests.rb
@@ -12,6 +12,21 @@ Shindo.tests("Fog::Compute[:aws] | security_group", ['aws']) do
       @group.description == "   fog group desc   "
     end
 
+    @other_group = Fog::Compute[:aws].security_groups.create(:name => 'other group', :description => 'another group')
+
+    test("authorize access by another security group") do
+      @group.authorize_group_and_owner(@other_group.name, @other_group.owner_id)
+      @group.reload
+      @group.ip_permissions.size == 3
+    end
+
+    test("revoke access from another security group") do
+      @group.revoke_group_and_owner(@other_group.name, @other_group.owner_id)
+      @group.reload
+      @group.ip_permissions.size == 0
+    end
+
+    @other_group.destroy
     @group.destroy
   end
 end