code: ///////////////////////////////////////////////////////////////////////////////////////////////
  // checkstyle: Checks Java source code and other text files for adherence to a set of rules.
  // Copyright (C) 2001-2023 the original author or authors.
  //
  // This library is free software; you can redistribute it and/or
  // modify it under the terms of the GNU Lesser General Public
  // License as published by the Free Software Foundation; either
  // version 2.1 of the License, or (at your option) any later version.
  //
  // This library is distributed in the hope that it will be useful,
  // but WITHOUT ANY WARRANTY; without even the implied warranty of
  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  // Lesser General Public License for more details.
  //
  // You should have received a copy of the GNU Lesser General Public
  // License along with this library; if not, write to the Free Software
  // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  ///////////////////////////////////////////////////////////////////////////////////////////////
  
  package com.puppycrawl.tools.checkstyle.gui;
  
  import static com.google.common.truth.Truth.assertWithMessage;
  
  import javax.swing.event.CellEditorListener;
  import javax.swing.event.ChangeEvent;
  
  import org.junit.jupiter.api.Test;
  
  class BaseCellEditorTest {
  
      @Test
      public void testToString() {
  
          final BaseCellEditor cellEditor = new BaseCellEditor();
  
          assertWithMessage("Should return null")
                  .that(cellEditor.getCellEditorValue() == null)
                  .isTrue();
      }
  
      @Test
      public void testStopCellEditing() {
  
          final BaseCellEditor cellEditor = new BaseCellEditor();
  
          assertWithMessage("Should be true")
                  .that(cellEditor.stopCellEditing())
                  .isTrue();
      }
  
      @Test
      public void testFireEditingStoppedAndCanceled() {
  
          final BaseCellEditor cellEditor = new BaseCellEditor();
  
          final boolean[] cellEditorListenerStopped = {false};
          final boolean[] cellEditorListenerCanceled = {false};
  
          final CellEditorListener cellEditorListener1 = new CellEditorListener() {
  
              @Override
              public void editingStopped(ChangeEvent e) {
                  cellEditorListenerStopped[0] = true;
              }
  
              @Override
              public void editingCanceled(ChangeEvent e) {
                  cellEditorListenerCanceled[0] = true;
              }
  
          };
  
          cellEditor.addCellEditorListener(cellEditorListener1);
          cellEditor.fireEditingStopped();
          assertWithMessage("Editor listener should be stopped")
                  .that(cellEditorListenerStopped[0])
                  .isTrue();
          cellEditor.fireEditingCanceled();
          assertWithMessage("Editor listener should be canceled")
                  .that(cellEditorListenerCanceled[0])
                  .isTrue();
  
      }
  }
  