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.rule488numericliterals;
  
  import org.junit.jupiter.api.Test;
  
  import com.google.checkstyle.test.base.AbstractGoogleModuleTestSupport;
  import com.puppycrawl.tools.checkstyle.api.Configuration;
  
  public class UpperEllTest extends AbstractGoogleModuleTestSupport {
  
      @Override
      protected String getPackageLocation() {
          return "com/google/checkstyle/test/chapter4formatting/rule488numericliterals";
      }
  
      @Test
      public void testUpperEll() throws Exception {
          final String[] expected = {
              "6:33: Should use uppercase 'L'.",
              "12:25: Should use uppercase 'L'.",
              "14:30: Should use uppercase 'L'.",
              "17:16: Should use uppercase 'L'.",
              "21:27: Should use uppercase 'L'.",
              "22:20: Should use uppercase 'L'.",
              "25:13: Should use uppercase 'L'.",
              "34:44: Should use uppercase 'L'.",
              "40:29: Should use uppercase 'L'.",
              "42:34: Should use uppercase 'L'.",
              "45:20: Should use uppercase 'L'.",
              "50:31: Should use uppercase 'L'.",
              "51:24: Should use uppercase 'L'.",
              "56:21: Should use uppercase 'L'.",
              "65:45: Should use uppercase 'L'.",
              "71:37: Should use uppercase 'L'.",
              "73:42: Should use uppercase 'L'.",
              "76:28: Should use uppercase 'L'.",
              "80:39: Should use uppercase 'L'.",
              "81:32: Should use uppercase 'L'.",
              "84:25: Should use uppercase 'L'.",
              "97:43: Should use uppercase 'L'.",
              "99:27: Should use uppercase 'L'.",
              "100:20: Should use uppercase 'L'.",
          };
  
          final Configuration checkConfig = getModuleConfig("UpperEll");
          final String filePath = getPath("InputUpperEll.java");
  
          final Integer[] warnList = getLinesWithWarn(filePath);
          verify(checkConfig, filePath, expected, warnList);
      }
  
  }
  