///////////////////////////////////////////////////////////////////////////////////////////////
   // checkstyle: Checks Java source code and other text files for adherence to a set of rules.
   // Copyright (C) 2001-2026 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.puppycrawl.tools.checkstyle.checks.naming;
  
  import static com.puppycrawl.tools.checkstyle.checks.naming.AbstractNameCheck.MSG_INVALID_PATTERN;
  
  import org.junit.jupiter.api.Test;
  
  import com.puppycrawl.tools.checkstyle.AbstractExamplesModuleTestSupport;
  
  public class LocalVariableNameCheckExamplesTest extends AbstractExamplesModuleTestSupport {
  
      @Override
      public String getPackageLocation() {
          return "com/puppycrawl/tools/checkstyle/checks/naming/localvariablename";
      }
  
      @Test
      public void testExample1() throws Exception {
          final String pattern = "^([a-z][a-zA-Z0-9]*|_)$";
          final String[] expected = {
              "20:14: " + getCheckMessage(MSG_INVALID_PATTERN, "VAR", pattern),
              "23:14: " + getCheckMessage(MSG_INVALID_PATTERN, "var_1", pattern),
              "28:14: " + getCheckMessage(MSG_INVALID_PATTERN, "V", pattern),
              "30:11: " + getCheckMessage(MSG_INVALID_PATTERN, "I", pattern),
              "36:17: " + getCheckMessage(MSG_INVALID_PATTERN, "O", pattern),
              "38:14: " + getCheckMessage(MSG_INVALID_PATTERN, "A", pattern),
          };
  
          verifyWithInlineConfigParser(getPath("Example1.java"), expected);
      }
  
      @Test
      public void testExample2() throws Exception {
          final String pattern = "^[a-z](_?[a-zA-Z0-9]+)*$";
          final String[] expected = {
              "22:14: " + getCheckMessage(MSG_INVALID_PATTERN, "VAR", pattern),
              "30:14: " + getCheckMessage(MSG_INVALID_PATTERN, "V", pattern),
              "32:11: " + getCheckMessage(MSG_INVALID_PATTERN, "I", pattern),
              "38:17: " + getCheckMessage(MSG_INVALID_PATTERN, "O", pattern),
              "40:14: " + getCheckMessage(MSG_INVALID_PATTERN, "A", pattern),
          };
  
          verifyWithInlineConfigParser(getPath("Example2.java"), expected);
      }
  
      @Test
      public void testUseCase1() throws Exception {
          final String pattern = "^[a-z](_?[a-zA-Z0-9]+)*$";
          final String[] expected = {
              "20:13: " + getCheckMessage(MSG_INVALID_PATTERN, "K", pattern),
              "23:17: " + getCheckMessage(MSG_INVALID_PATTERN, "O", pattern),
          };
  
          verifyWithInlineConfigParser(getPath("UseCase1.java"), expected);
      }
  
      @Test
      public void testExample3() throws Exception {
          final String pattern = "^[a-z][_a-zA-Z0-9]+$";
          final String[] expected = {
              "21:9: " + getCheckMessage(MSG_INVALID_PATTERN, "g", pattern),
              "23:14: " + getCheckMessage(MSG_INVALID_PATTERN, "VAR", pattern),
              "29:11: " + getCheckMessage(MSG_INVALID_PATTERN, "a", pattern),
              "33:11: " + getCheckMessage(MSG_INVALID_PATTERN, "I", pattern),
              "37:14: " + getCheckMessage(MSG_INVALID_PATTERN, "a", pattern),
              "41:14: " + getCheckMessage(MSG_INVALID_PATTERN, "A", pattern),
          };
  
          verifyWithInlineConfigParser(getPath("Example3.java"), expected);
      }
  
      @Test
      public void testUseCase2() throws Exception {
          final String pattern = "^[a-z][_a-zA-Z0-9]{2,}$";
          final String[] expected = {
              "17:9: " + getCheckMessage(MSG_INVALID_PATTERN, "i", pattern),
              "19:11: " + getCheckMessage(MSG_INVALID_PATTERN, "j", pattern),
          };
  
          verifyWithInlineConfigParser(getPath("UseCase2.java"), expected);
      }
 
 }