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.checks.blocks;
  
  import static com.google.common.truth.Truth.assertWithMessage;
  import static com.puppycrawl.tools.checkstyle.checks.blocks.EmptyCatchBlockCheck.MSG_KEY_CATCH_BLOCK_EMPTY;
  
  import org.junit.jupiter.api.Test;
  
  import com.puppycrawl.tools.checkstyle.AbstractModuleTestSupport;
  import com.puppycrawl.tools.checkstyle.api.TokenTypes;
  
  public class EmptyCatchBlockCheckTest extends AbstractModuleTestSupport {
  
      @Override
      protected String getPackageLocation() {
          return "com/puppycrawl/tools/checkstyle/checks/blocks/emptycatchblock";
      }
  
      @Test
      public void testGetRequiredTokens() {
          final EmptyCatchBlockCheck checkObj = new EmptyCatchBlockCheck();
          final int[] expected = {TokenTypes.LITERAL_CATCH};
          assertWithMessage("Default required tokens are invalid")
                  .that(checkObj.getRequiredTokens())
                  .isEqualTo(expected);
      }
  
      @Test
      public void testDefault() throws Exception {
          final String[] expected = {
              "25:31: " + getCheckMessage(MSG_KEY_CATCH_BLOCK_EMPTY),
              "32:83: " + getCheckMessage(MSG_KEY_CATCH_BLOCK_EMPTY),
          };
          verifyWithInlineConfigParser(
                  getPath("InputEmptyCatchBlockDefault.java"), expected);
      }
  
      @Test
      public void testWithUserSetValues() throws Exception {
          final String[] expected = {
              "26:31: " + getCheckMessage(MSG_KEY_CATCH_BLOCK_EMPTY),
              "54:78: " + getCheckMessage(MSG_KEY_CATCH_BLOCK_EMPTY),
              "88:29: " + getCheckMessage(MSG_KEY_CATCH_BLOCK_EMPTY),
              "177:33: " + getCheckMessage(MSG_KEY_CATCH_BLOCK_EMPTY),
              "186:33: " + getCheckMessage(MSG_KEY_CATCH_BLOCK_EMPTY),
              "205:33: " + getCheckMessage(MSG_KEY_CATCH_BLOCK_EMPTY),
              "221:33: " + getCheckMessage(MSG_KEY_CATCH_BLOCK_EMPTY),
              "230:33: " + getCheckMessage(MSG_KEY_CATCH_BLOCK_EMPTY),
          };
          verifyWithInlineConfigParser(
                  getPath("InputEmptyCatchBlockDefault2.java"), expected);
      }
  
      @Test
      public void testLinesAreProperlySplitSystemIndependently() throws Exception {
          final String[] expected = {
              "25:31: " + getCheckMessage(MSG_KEY_CATCH_BLOCK_EMPTY),
              "53:78: " + getCheckMessage(MSG_KEY_CATCH_BLOCK_EMPTY),
              "87:29: " + getCheckMessage(MSG_KEY_CATCH_BLOCK_EMPTY),
              "176:33: " + getCheckMessage(MSG_KEY_CATCH_BLOCK_EMPTY),
              "185:33: " + getCheckMessage(MSG_KEY_CATCH_BLOCK_EMPTY),
              "204:33: " + getCheckMessage(MSG_KEY_CATCH_BLOCK_EMPTY),
              "220:33: " + getCheckMessage(MSG_KEY_CATCH_BLOCK_EMPTY),
              "229:33: " + getCheckMessage(MSG_KEY_CATCH_BLOCK_EMPTY),
          };
          final String originalLineSeparator = System.getProperty("line.separator");
          try {
              System.setProperty("line.separator", "\r\n");
              verifyWithInlineConfigParser(
                      getPath("InputEmptyCatchBlockDefaultLF.java"), expected);
          }
          finally {
              System.setProperty("line.separator", originalLineSeparator);
          }
      }
  
      @Test
      public void testGetAcceptableTokens() {
          final EmptyCatchBlockCheck constantNameCheckObj = new EmptyCatchBlockCheck();
          final int[] actual = constantNameCheckObj.getAcceptableTokens();
          final int[] expected = {TokenTypes.LITERAL_CATCH };
          assertWithMessage("Default acceptable tokens are invalid")
                  .that(actual)
                  .isEqualTo(expected);
      }
  
  }
  