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 org.checkstyle.suppressionxpathfilter;
  
  import java.io.File;
  import java.util.Arrays;
  import java.util.List;
  
  import org.junit.jupiter.api.Test;
  
  import com.puppycrawl.tools.checkstyle.DefaultConfiguration;
  import com.puppycrawl.tools.checkstyle.checks.coding.FallThroughCheck;
  
  public class XpathRegressionFallThroughTest extends AbstractXpathTestSupport {
  
      private final String checkName = FallThroughCheck.class.getSimpleName();
  
      @Override
      protected String getCheckName() {
          return checkName;
      }
  
      @Test
      public void testOne() throws Exception {
          final File fileToProcess =
                  new File(getPath("SuppressionXpathRegressionFallThroughOne.java"));
  
          final DefaultConfiguration moduleConfig =
                  createModuleConfig(FallThroughCheck.class);
  
          final String[] expectedViolation = {
              "11:13: " + getCheckMessage(FallThroughCheck.class,
                  FallThroughCheck.MSG_FALL_THROUGH),
          };
  
          final List<String> expectedXpathQueries = Arrays.asList(
              "/COMPILATION_UNIT/CLASS_DEF[./IDENT[@text='SuppressionXpathRegressionFallThroughOne']]"
                  + "/OBJBLOCK"
                  + "/METHOD_DEF[./IDENT[@text='test']]/SLIST/LITERAL_SWITCH/CASE_GROUP["
                  + "./LITERAL_CASE/EXPR/NUM_INT[@text='2']]",
              "/COMPILATION_UNIT/CLASS_DEF[./IDENT[@text='SuppressionXpathRegressionFallThroughOne']]"
                  + "/OBJBLOCK"
                  + "/METHOD_DEF[./IDENT[@text='test']]/SLIST/LITERAL_SWITCH/CASE_GROUP/LITERAL_CASE"
          );
  
          runVerifications(moduleConfig, fileToProcess, expectedViolation,
                  expectedXpathQueries);
      }
  
      @Test
      public void testTwo() throws Exception {
          final File fileToProcess =
                  new File(getPath("SuppressionXpathRegressionFallThroughTwo.java"));
  
          final DefaultConfiguration moduleConfig =
                  createModuleConfig(FallThroughCheck.class);
          moduleConfig.addProperty("checkLastCaseGroup", "true");
  
          final String[] expectedViolation = {
              "10:17: " + getCheckMessage(FallThroughCheck.class,
                  FallThroughCheck.MSG_FALL_THROUGH_LAST),
          };
  
          final List<String> expectedXpathQueries = Arrays.asList(
              "/COMPILATION_UNIT/CLASS_DEF[./IDENT[@text='SuppressionXpathRegressionFallThroughTwo']]"
                  + "/OBJBLOCK/METHOD_DEF["
                  + "./IDENT[@text='methodFallThruCustomWords']]/SLIST/LITERAL_WHILE/SLIST"
                  + "/LITERAL_SWITCH/CASE_GROUP[./SLIST/EXPR/POST_INC/IDENT[@text='i']]",
              "/COMPILATION_UNIT/CLASS_DEF[./IDENT[@text='SuppressionXpathRegressionFallThroughTwo']]"
                  + "/OBJBLOCK/METHOD_DEF["
                  + "./IDENT[@text='methodFallThruCustomWords']]/SLIST/LITERAL_WHILE/SLIST"
                  + "/LITERAL_SWITCH/CASE_GROUP/LITERAL_DEFAULT"
          );
  
          runVerifications(moduleConfig, fileToProcess, expectedViolation,
                  expectedXpathQueries);
      }
  }
  