manual add fix of piglop to prevent todos from staying hidden forever

spec/models/todo_spec.rb

@@ -136,6 +136,31 @@ describe Todo do
     end
   end
 
+  describe 'when update_state_from_project is called' do
+    it "should unhide when project is active" do
+      project = mock_model(Project, :hidden? => false)
+      todo = Todo.new(:state => 'project_hidden', :project => project)
+      todo.should be_project_hidden
+      todo.save
+      todo.should be_active
+    end
+
+    it "should unhide when project is null" do
+      todo = Todo.new(:state => 'project_hidden', :project => nil)
+      todo.should be_project_hidden
+      todo.save
+      todo.should be_active
+    end
+
+    it "should hide when project is hidden" do
+      project = mock_model(Project, :hidden? => true)
+      todo = Todo.new(:state => 'active', :project => project)
+      todo.should be_active
+      todo.save
+      todo.should be_project_hidden
+    end
+  end
+
   describe 'when toggling completion' do
     it 'toggles to active when completed' do
       todo = create_todo