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.google.checkstyle.test.chapter4formatting.rule462horizontalwhitespace;
  
  import org.junit.jupiter.api.Test;
  
  import com.google.checkstyle.test.base.AbstractGoogleModuleTestSupport;
  import com.puppycrawl.tools.checkstyle.api.Configuration;
  import com.puppycrawl.tools.checkstyle.checks.whitespace.WhitespaceAfterCheck;
  import com.puppycrawl.tools.checkstyle.utils.CommonUtil;
  
  public class WhitespaceAfterTest extends AbstractGoogleModuleTestSupport {
  
      @Override
      protected String getPackageLocation() {
          return "com/google/checkstyle/test/chapter4formatting/rule462horizontalwhitespace";
      }
  
      @Test
      public void testWhitespaceAfterBad() throws Exception {
          final Class<WhitespaceAfterCheck> clazz = WhitespaceAfterCheck.class;
          final String message = "ws.notFollowed";
  
          final String[] expected = {
              "4:29: " + getCheckMessage(clazz, message, ","),
              "5:9: " + getCheckMessage(clazz, message, "for"),
              "5:20: " + getCheckMessage(clazz, message, ","),
              "5:24: " + getCheckMessage(clazz, message, ";"),
              "5:28: " + getCheckMessage(clazz, message, ";"),
              "5:32: " + getCheckMessage(clazz, message, ","),
              "6:9: " + getCheckMessage(clazz, message, "while"),
              "7:20: " + getCheckMessage(clazz, message, ","),
              "9:9: " + getCheckMessage(clazz, message, "do"),
              "11:10: " + getCheckMessage(clazz, message, "while"),
              "13:35: " + getCheckMessage(clazz, message, ","),
              "14:9: " + getCheckMessage(clazz, message, "if"),
              "14:18: " + getCheckMessage(clazz, message, "typecast"),
              "17:9: " + getCheckMessage(clazz, message, "else"),
              "22:28: " + getCheckMessage(clazz, message, "..."),
              "23:26: " + getCheckMessage(clazz, message, "->"),
              "24:9: " + getCheckMessage(clazz, message, "switch"),
              "31:9: " + getCheckMessage(clazz, message, "try"),
              "35:16: " + getCheckMessage(clazz, message, "finally"),
              "36:38: " + getCheckMessage(clazz, message, "finally"),
              "40:16: " + getCheckMessage(clazz, message, "catch"),
              "44:9: " + getCheckMessage(clazz, message, "synchronized"),
              "49:9: " + getCheckMessage(clazz, message, "return"),
          };
          final Configuration checkConfig = getModuleConfig("WhitespaceAfter");
          final String filePath = getPath("InputWhitespaceAfterBad.java");
  
          final Integer[] warnList = getLinesWithWarn(filePath);
          verify(checkConfig, filePath, expected, warnList);
      }
  
      @Test
      public void testWhitespaceAfterGood() throws Exception {
          final String[] expected = CommonUtil.EMPTY_STRING_ARRAY;
          final Configuration checkConfig = getModuleConfig("WhitespaceAfter");
          final String filePath = getPath("InputWhitespaceAfterGood.java");
  
          final Integer[] warnList = getLinesWithWarn(filePath);
          verify(checkConfig, filePath, expected, warnList);
      }
  
  }
  