Fixes #4902 - OTRS import fails when default closed states at the OTR…

…S side not exist.

lib/import/otrs/state_factory.rb

@@ -39,7 +39,7 @@ def update_state_with_next_state_id(state, close_state_name)
         state.next_state_id = ::Ticket::State.find_by(name: close_state_name)&.id
 
         if state.next_state_id.blank?
-          state.next_state_id = ::Ticket::StateType.find_by(name: 'closed')&.first&.id
+          state.next_state_id = ::Ticket::State.by_category(:closed)&.first&.id
         end
 
         state.save

spec/fixtures/files/import/otrs/state/closed_other.json

@@ -0,0 +1,10 @@
+{
+  "ChangeTime": "2014-04-28 10:53:18",
+  "ID": "2",
+  "ValidID": "1",
+  "TypeID": "3",
+  "CreateTime": "2014-04-28 10:53:18",
+  "TypeName": "closed",
+  "Comment": "Ticket is closed other.",
+  "Name": "closed other"
+}

spec/lib/import/otrs/state_factory_spec.rb

@@ -119,6 +119,28 @@ def load_state_json(file)
     expect(state_pending_auto_close_p.next_state_id).to eq(Ticket::State.find_by(name: 'closed successful').id)
   end
 
+  context 'when some default otrs states not exists' do
+    let(:state_backend_param) do
+      states = %w[new open merged pending_reminder pending_auto_close_p pending_auto_close_n pending_auto_close_p removed closed_other]
+
+      state_backend_param = []
+      states.each do |state|
+        state_backend_param.push(load_state_json(state))
+      end
+      state_backend_param
+    end
+
+    it 'use fallback for next state for pending auto states' do
+      described_class.import(state_backend_param)
+
+      state_pending_auto_close_n = Ticket::State.find_by(name: 'pending auto close-')
+      state_pending_auto_close_p = Ticket::State.find_by(name: 'pending auto close+')
+
+      expect(state_pending_auto_close_n.next_state_id).to eq(Ticket::State.find_by(name: 'closed other').id)
+      expect(state_pending_auto_close_p.next_state_id).to eq(Ticket::State.find_by(name: 'closed other').id)
+    end
+  end
+
   context 'changing Ticket::State IDs' do
     it 'updates Overviews' do
       name     = 'My Pending Reached Tickets'