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.indentation.CommentsIndentationCheck;
  
  public class XpathRegressionCommentsIndentationTest extends AbstractXpathTestSupport {
  
      private final String checkName = CommentsIndentationCheck.class.getSimpleName();
  
      @Override
      protected String getCheckName() {
          return checkName;
      }
  
      @Test
      public void testSingleLine() throws Exception {
          final File fileToProcess =
                  new File(getPath("SuppressionXpathRegressionCommentsIndentation"
                                          + "SingleLine.java"));
  
          final DefaultConfiguration moduleConfig =
                  createModuleConfig(CommentsIndentationCheck.class);
  
          final String[] expectedViolation = {
              "5:9: " + getCheckMessage(CommentsIndentationCheck.class,
                  "comments.indentation.single", 4, 8, 4),
          };
  
          final List<String> expectedXpathQueries = Collections.singletonList(
              "/COMPILATION_UNIT/CLASS_DEF[./IDENT"
                  + "[@text='SuppressionXpathRegressionCommentsIndentationSingleLine']]"
                  + "/OBJBLOCK/SINGLE_LINE_COMMENT[./COMMENT_CONTENT[@text=' Comment // warn\\n']]"
          );
  
          runVerifications(moduleConfig, fileToProcess, expectedViolation,
                  expectedXpathQueries);
      }
  
      @Test
      public void testBlock() throws Exception {
          final File fileToProcess =
                  new File(getPath("SuppressionXpathRegressionCommentsIndentation"
                                          + "Block.java"));
  
          final DefaultConfiguration moduleConfig =
                  createModuleConfig(CommentsIndentationCheck.class);
  
          final String[] expectedViolation = {
              "4:11: " + getCheckMessage(CommentsIndentationCheck.class,
                  "comments.indentation.block", 7, 10, 4),
          };
  
          final List<String> expectedXpathQueries = Collections.singletonList(
              "/COMPILATION_UNIT/CLASS_DEF[./IDENT"
                  + "[@text='SuppressionXpathRegressionCommentsIndentationBlock']]/OBJBLOCK/"
                  + "VARIABLE_DEF[./IDENT[@text='f']]/TYPE/BLOCK_COMMENT_BEGIN[./COMMENT_CONTENT"
                  + "[@text=' // warn\\n           * Javadoc comment\\n           ']]"
          );
  
          runVerifications(moduleConfig, fileToProcess, expectedViolation,
                  expectedXpathQueries);
      }
  
      @Test
      public void testSeparator() throws Exception {
          final File fileToProcess =
                  new File(getPath("SuppressionXpathRegressionCommentsIndentation"
                                          + "Separator.java"));
  
          final DefaultConfiguration moduleConfig =
                  createModuleConfig(CommentsIndentationCheck.class);
  
          final String[] expectedViolation = {
              "8:13: " + getCheckMessage(CommentsIndentationCheck.class,
                  "comments.indentation.single", 10, 12, 4),
          };
  
          final List<String> expectedXpathQueries = Collections.singletonList(
              "/COMPILATION_UNIT/CLASS_DEF[./IDENT"
                  + "[@text='SuppressionXpathRegressionCommentsIndentationSeparator']]"
                  + "/OBJBLOCK/METHOD_DEF[./IDENT[@text='foo']]/MODIFIERS/SINGLE_LINE_COMMENT"
                  + "[./COMMENT_CONTENT[@text='///////////// Comment separator // warn\\n']]"
          );
  
          runVerifications(moduleConfig, fileToProcess, expectedViolation,
                  expectedXpathQueries);
      }
  
      @Test
      public void testDistributedStatement() throws Exception {
          final File fileToProcess =
                  new File(getPath("SuppressionXpathRegressionCommentsIndentation"
                                          + "DistributedStatement.java"));
  
          final DefaultConfiguration moduleConfig =
                  createModuleConfig(CommentsIndentationCheck.class);
  
          final String[] expectedViolation = {
              "10:25: " + getCheckMessage(CommentsIndentationCheck.class,
                  "comments.indentation.single", 8, 24, 8),
          };
  
          final List<String> expectedXpathQueries = Collections.singletonList(
              "/COMPILATION_UNIT/CLASS_DEF[./IDENT"
                  + "[@text='SuppressionXpathRegressionCommentsIndentationDistributedStatement']]"
                  + "/OBJBLOCK/METHOD_DEF[./IDENT[@text='foo']]/SLIST/SINGLE_LINE_COMMENT"
                  + "[./COMMENT_CONTENT[@text=' Comment // warn\\n']]"
          );
  
          runVerifications(moduleConfig, fileToProcess, expectedViolation,
                  expectedXpathQueries);
      }
  
      @Test
      public void testSingleLineBlock() throws Exception {
          final File fileToProcess =
                  new File(getPath("SuppressionXpathRegressionCommentsIndentation"
                                          + "SingleLineBlock.java"));
  
          final DefaultConfiguration moduleConfig =
                  createModuleConfig(CommentsIndentationCheck.class);
  
          final String[] expectedViolation = {
              "6:1: " + getCheckMessage(CommentsIndentationCheck.class,
                  "comments.indentation.single", 7, 0, 4),
          };
  
          final List<String> expectedXpathQueries = Collections.singletonList(
              "/COMPILATION_UNIT/CLASS_DEF[./IDENT"
                  + "[@text='SuppressionXpathRegressionCommentsIndentationSingleLineBlock']]"
                  + "/OBJBLOCK/METHOD_DEF[./IDENT[@text='foo']]/SLIST/SINGLE_LINE_COMMENT"
                  + "[./COMMENT_CONTENT[@text=' block Comment // warn\\n']]"
          );
  
          runVerifications(moduleConfig, fileToProcess, expectedViolation,
                  expectedXpathQueries);
      }
  
      @Test
      public void testNonEmptyCase() throws Exception {
          final File fileToProcess =
                  new File(getPath("SuppressionXpathRegressionCommentsIndentation"
                                          + "NonEmptyCase.java"));
  
          final DefaultConfiguration moduleConfig =
                  createModuleConfig(CommentsIndentationCheck.class);
  
          final String[] expectedViolation = {
              "10:20: " + getCheckMessage(CommentsIndentationCheck.class,
                  "comments.indentation.single", "9, 11", 19, "16, 12"),
          };
  
          final List<String> expectedXpathQueries = Collections.singletonList(
              "/COMPILATION_UNIT/CLASS_DEF[./IDENT"
                  + "[@text='SuppressionXpathRegressionCommentsIndentationNonEmptyCase']]"
                  + "/OBJBLOCK/METHOD_DEF[./IDENT[@text='foo']]/SLIST/LITERAL_SWITCH/"
                  + "CASE_GROUP/SINGLE_LINE_COMMENT[./COMMENT_CONTENT[@text=' Comment // warn\\n']]"
          );
  
          runVerifications(moduleConfig, fileToProcess, expectedViolation,
                  expectedXpathQueries);
      }
  
      @Test
      public void testEmptyCase() throws Exception {
          final File fileToProcess =
                  new File(getPath("SuppressionXpathRegressionCommentsIndentation"
                                          + "EmptyCase.java"));
  
          final DefaultConfiguration moduleConfig =
                  createModuleConfig(CommentsIndentationCheck.class);
  
          final String[] expectedViolation = {
              "9:1: " + getCheckMessage(CommentsIndentationCheck.class,
                  "comments.indentation.single", "8, 10", 0, "12, 12"),
          };
  
          final List<String> expectedXpathQueries = Collections.singletonList(
              "/COMPILATION_UNIT/CLASS_DEF[./IDENT"
                  + "[@text='SuppressionXpathRegressionCommentsIndentationEmptyCase']]"
                  + "/OBJBLOCK/METHOD_DEF[./IDENT[@text='foo']]/SLIST/LITERAL_SWITCH/"
                  + "CASE_GROUP/SINGLE_LINE_COMMENT[./COMMENT_CONTENT[@text=' Comment // warn\\n']]"
          );
  
          runVerifications(moduleConfig, fileToProcess, expectedViolation,
                  expectedXpathQueries);
      }
  
      @Test
      public void testWithinBlockStatement() throws Exception {
          final File fileToProcess =
                  new File(getPath("SuppressionXpathRegressionCommentsIndentation"
                                          + "WithinBlockStatement.java"));
  
          final DefaultConfiguration moduleConfig =
                  createModuleConfig(CommentsIndentationCheck.class);
  
          final String[] expectedViolation = {
              "6:9: " + getCheckMessage(CommentsIndentationCheck.class,
                  "comments.indentation.single", 7, 8, 12),
          };
  
          final List<String> expectedXpathQueries = Collections.singletonList(
              "/COMPILATION_UNIT/CLASS_DEF[./IDENT"
                  + "[@text='SuppressionXpathRegressionCommentsIndentationWithinBlockStatement']]"
                  + "/OBJBLOCK/METHOD_DEF[./IDENT[@text='foo']]/SLIST/VARIABLE_DEF"
                  + "[./IDENT[@text='s']]/ASSIGN/EXPR/PLUS[./STRING_LITERAL[@text='O']]"
                  + "/SINGLE_LINE_COMMENT[./COMMENT_CONTENT[@text=' Comment // warn\\n']]"
          );
  
          runVerifications(moduleConfig, fileToProcess, expectedViolation,
                  expectedXpathQueries);
      }
  }
  