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.Collections;
  import java.util.List;
  
  import org.junit.jupiter.api.Test;
  
  import com.puppycrawl.tools.checkstyle.DefaultConfiguration;
  import com.puppycrawl.tools.checkstyle.checks.naming.AbstractNameCheck;
  import com.puppycrawl.tools.checkstyle.checks.naming.ParameterNameCheck;
  
  public class XpathRegressionParameterNameTest extends AbstractXpathTestSupport {
  
      private final String checkName = ParameterNameCheck.class.getSimpleName();
  
      @Override
      protected String getCheckName() {
          return checkName;
      }
  
      @Test
      public void testDefaultPattern() throws Exception {
          final File fileToProcess =
                  new File(getPath("SuppressionXpathRegressionParameterNameDefaultPattern.java"));
  
          final String pattern = "^[a-z][a-zA-Z0-9]*$";
          final DefaultConfiguration moduleConfig =
                  createModuleConfig(ParameterNameCheck.class);
  
          final String[] expectedViolation = {
              "5:22: " + getCheckMessage(ParameterNameCheck.class,
                          AbstractNameCheck.MSG_INVALID_PATTERN, "v_1", pattern),
          };
  
          final List<String> expectedXpathQueries = Collections.singletonList(
                  "/COMPILATION_UNIT"
                          + "/CLASS_DEF[./IDENT[@text"
                          + "='SuppressionXpathRegressionParameterNameDefaultPattern']]"
                          + "/OBJBLOCK/METHOD_DEF[./IDENT[@text='method1']]"
                          + "/PARAMETERS/PARAMETER_DEF/IDENT[@text='v_1']"
          );
          runVerifications(moduleConfig, fileToProcess, expectedViolation,
                  expectedXpathQueries);
      }
  
      @Test
      public void testDifferentPattern() throws Exception {
          final File fileToProcess =
                  new File(getPath("SuppressionXpathRegressionParameterNameDifferentPattern.java"));
  
          final String pattern = "^[a-z][_a-zA-Z0-9]+$";
          final DefaultConfiguration moduleConfig =
                  createModuleConfig(ParameterNameCheck.class);
          moduleConfig.addProperty("format", "^[a-z][_a-zA-Z0-9]+$");
  
          final String[] expectedViolation = {
              "5:22: " + getCheckMessage(ParameterNameCheck.class,
                          AbstractNameCheck.MSG_INVALID_PATTERN, "V2", pattern),
          };
  
          final List<String> expectedXpathQueries = Collections.singletonList(
                  "/COMPILATION_UNIT"
                          + "/CLASS_DEF[./IDENT[@text"
                          + "='SuppressionXpathRegressionParameterNameDifferentPattern']]"
                          + "/OBJBLOCK/METHOD_DEF[./IDENT[@text='method2']]"
                          + "/PARAMETERS/PARAMETER_DEF/IDENT[@text='V2']"
          );
          runVerifications(moduleConfig, fileToProcess, expectedViolation,
                  expectedXpathQueries);
      }
  
      @Test
      public void testIgnoreOverridden() throws Exception {
          final File fileToProcess =
                  new File(getPath("SuppressionXpathRegressionParameterNameIgnoreOverridden.java"));
  
          final String pattern = "^[a-z][a-zA-Z0-9]*$";
          final DefaultConfiguration moduleConfig =
                  createModuleConfig(ParameterNameCheck.class);
          moduleConfig.addProperty("ignoreOverridden", "true");
  
          final String[] expectedViolation = {
              "5:22: " + getCheckMessage(ParameterNameCheck.class,
                          AbstractNameCheck.MSG_INVALID_PATTERN, "V2", pattern),
          };
  
          final List<String> expectedXpathQueries = Collections.singletonList(
                  "/COMPILATION_UNIT"
                          + "/CLASS_DEF[./IDENT[@text"
                          + "='SuppressionXpathRegressionParameterNameIgnoreOverridden']]"
                          + "/OBJBLOCK/METHOD_DEF[./IDENT[@text='method2']]"
                          + "/PARAMETERS/PARAMETER_DEF/IDENT[@text='V2']"
          );
          runVerifications(moduleConfig, fileToProcess, expectedViolation,
                  expectedXpathQueries);
      }
  
      @Test
      public void testAccessModifiers() throws Exception {
          final File fileToProcess =
                  new File(getPath("SuppressionXpathRegressionParameterNameAccessModifier.java"));
  
          final String pattern = "^[a-z][a-z0-9][a-zA-Z0-9]*$";
          final DefaultConfiguration moduleConfig =
                  createModuleConfig(ParameterNameCheck.class);
          moduleConfig.addProperty("format", "^[a-z][a-z0-9][a-zA-Z0-9]*$");
          moduleConfig.addProperty("accessModifiers", "public");
  
          final String[] expectedViolation = {
              "8:29: " + getCheckMessage(ParameterNameCheck.class,
                          AbstractNameCheck.MSG_INVALID_PATTERN, "b", pattern),
          };
  
          final List<String> expectedXpathQueries = Collections.singletonList(
                  "/COMPILATION_UNIT"
                          + "/CLASS_DEF[./IDENT[@text"
                          + "='SuppressionXpathRegressionParameterNameAccessModifier']]"
                          + "/OBJBLOCK/METHOD_DEF[./IDENT[@text='method2']]"
                          + "/PARAMETERS/PARAMETER_DEF/IDENT[@text='b']"
          );
          runVerifications(moduleConfig, fileToProcess, expectedViolation,
                  expectedXpathQueries);
      }
  }
  