Stop the <ask> sequence if next_dialog is '-1'

src/lib/autoinstall/ask/runner.rb

@@ -125,7 +125,7 @@ def find_next_dialog_index
         next_dialog = File.read(DIALOG_FILE)
         FileUtils.rm(DIALOG_FILE)
         dialog_id = next_dialog.to_i
-        return unless dialog_id
+        return dialog_id if dialog_id.nil? || dialog_id == -1
 
         next_dialog = dialogs.find { |d| d.id == dialog_id }
         dialogs.index(next_dialog)
@@ -150,7 +150,10 @@ def go_back
       #
       # @return [Dialog,nil] Returns the following dialog or `nil` if there are no more dialogs
       def go_next
-        next_index = find_next_dialog_index || (current_index + 1)
+        next_index = find_next_dialog_index
+        return nil if next_index == -1
+
+        next_index ||= current_index + 1
         @indexes.push(next_index)
         dialogs[next_index]
       end

test/lib/autoinstall/ask/runner_test.rb

@@ -222,6 +222,17 @@
           runner.run
         end
       end
+
+      context "and the content is '-1'" do
+        before do
+          File.write(next_dialog_file, "-1\n")
+        end
+
+        it "finishes the sequence" do
+          expect(ask_dialog1).to_not receive(:run)
+          runner.run
+        end
+      end
     end
   end
 end