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.puppycrawl.tools.checkstyle.checks.naming;
  
  import static com.google.common.truth.Truth.assertWithMessage;
  import static com.puppycrawl.tools.checkstyle.checks.naming.AbstractNameCheck.MSG_INVALID_PATTERN;
  
  import org.junit.jupiter.api.Test;
  
  import com.puppycrawl.tools.checkstyle.AbstractModuleTestSupport;
  import com.puppycrawl.tools.checkstyle.api.TokenTypes;
  
  public class MemberNameCheckTest
      extends AbstractModuleTestSupport {
  
      @Override
      protected String getPackageLocation() {
          return "com/puppycrawl/tools/checkstyle/checks/naming/membername";
      }
  
      @Test
      public void testGetRequiredTokens() {
          final MemberNameCheck checkObj = new MemberNameCheck();
          final int[] expected = {TokenTypes.VARIABLE_DEF};
          assertWithMessage("Default required tokens are invalid")
              .that(checkObj.getRequiredTokens())
              .isEqualTo(expected);
      }
  
      @Test
      public void testSpecified()
              throws Exception {
  
          final String pattern = "^m[A-Z][a-zA-Z0-9]*$";
  
          final String[] expected = {
              "41:17: " + getCheckMessage(MSG_INVALID_PATTERN, "badMember", pattern),
              "230:17: " + getCheckMessage(MSG_INVALID_PATTERN, "someMember", pattern),
          };
          verifyWithInlineConfigParser(
                  getPath("InputMemberNameSimple.java"), expected);
      }
  
      @Test
      public void testInnerClass()
              throws Exception {
  
          final String pattern = "^[a-z][a-zA-Z0-9]*$";
  
          final String[] expected = {
              "63:25: " + getCheckMessage(MSG_INVALID_PATTERN, "ABC", pattern),
          };
          verifyWithInlineConfigParser(
                  getPath("InputMemberNameInner.java"), expected);
      }
  
      @Test
      public void testDefaults() throws Exception {
  
          final String pattern = "^[a-z][a-zA-Z0-9]*$";
  
          final String[] expected = {
              "21:16: " + getCheckMessage(MSG_INVALID_PATTERN, "_public", pattern),
              "22:19: " + getCheckMessage(MSG_INVALID_PATTERN, "_protected", pattern),
              "23:9: " + getCheckMessage(MSG_INVALID_PATTERN, "_package", pattern),
              "24:17: " + getCheckMessage(MSG_INVALID_PATTERN, "_private", pattern),
          };
          verifyWithInlineConfigParser(
                  getPath("InputMemberName.java"), expected);
      }
  
      @Test
      public void testUnderlined() throws Exception {
  
          final String pattern = "^_[a-z]*$";
  
          final String[] expected = {
              "16:16: " + getCheckMessage(MSG_INVALID_PATTERN, "mPublic", pattern),
              "17:19: " + getCheckMessage(MSG_INVALID_PATTERN, "mProtected", pattern),
              "18:9: " + getCheckMessage(MSG_INVALID_PATTERN, "mPackage", pattern),
              "19:17: " + getCheckMessage(MSG_INVALID_PATTERN, "mPrivate", pattern),
          };
          verifyWithInlineConfigParser(
                  getPath("InputMemberName2.java"), expected);
      }
  
      @Test
      public void testPublicOnly() throws Exception {
  
          final String pattern = "^_[a-z]*$";
  
          final String[] expected = {
              "16:16: " + getCheckMessage(MSG_INVALID_PATTERN, "mPublic", pattern),
          };
          verifyWithInlineConfigParser(
                  getPath("InputMemberName3.java"), expected);
      }
  
      @Test
      public void testProtectedOnly() throws Exception {
  
          final String pattern = "^_[a-z]*$";
  
          final String[] expected = {
              "17:19: " + getCheckMessage(MSG_INVALID_PATTERN, "mProtected", pattern),
          };
          verifyWithInlineConfigParser(
                  getPath("InputMemberName4.java"), expected);
      }
  
      @Test
      public void testPackageOnly() throws Exception {
  
          final String pattern = "^_[a-z]*$";
  
          final String[] expected = {
              "18:9: " + getCheckMessage(MSG_INVALID_PATTERN, "mPackage", pattern),
          };
          verifyWithInlineConfigParser(
                  getPath("InputMemberName5.java"), expected);
      }
  
      @Test
      public void testPrivateOnly() throws Exception {
  
          final String pattern = "^_[a-z]*$";
  
          final String[] expected = {
              "19:17: " + getCheckMessage(MSG_INVALID_PATTERN, "mPrivate", pattern),
          };
          verifyWithInlineConfigParser(
                  getPath("InputMemberName6.java"), expected);
      }
  
      @Test
      public void testNotPrivate() throws Exception {
  
          final String pattern = "^[a-z][a-zA-Z0-9]*$";
  
          final String[] expected = {
              "21:16: " + getCheckMessage(MSG_INVALID_PATTERN, "_public", pattern),
              "22:19: " + getCheckMessage(MSG_INVALID_PATTERN, "_protected", pattern),
              "23:9: " + getCheckMessage(MSG_INVALID_PATTERN, "_package", pattern),
          };
          verifyWithInlineConfigParser(
                  getPath("InputMemberName7.java"), expected);
      }
  
      @Test
      public void memberNameExtended() throws Exception {
  
          final String pattern = "^[a-z][a-z0-9][a-zA-Z0-9]*$";
  
          final String[] expected = {
              "19:16: " + getCheckMessage(MSG_INVALID_PATTERN, "mPublic", pattern),
              "20:19: " + getCheckMessage(MSG_INVALID_PATTERN, "mProtected", pattern),
              "21:9: " + getCheckMessage(MSG_INVALID_PATTERN, "mPackage", pattern),
              "22:17: " + getCheckMessage(MSG_INVALID_PATTERN, "mPrivate", pattern),
              "24:16: " + getCheckMessage(MSG_INVALID_PATTERN, "_public", pattern),
              "25:19: " + getCheckMessage(MSG_INVALID_PATTERN, "_protected", pattern),
              "26:9: " + getCheckMessage(MSG_INVALID_PATTERN, "_package", pattern),
              "27:17: " + getCheckMessage(MSG_INVALID_PATTERN, "_private", pattern),
              "30:20: " + getCheckMessage(MSG_INVALID_PATTERN, "mPublic", pattern),
              "31:23: " + getCheckMessage(MSG_INVALID_PATTERN, "mProtected", pattern),
              "32:13: " + getCheckMessage(MSG_INVALID_PATTERN, "mPackage", pattern),
              "33:21: " + getCheckMessage(MSG_INVALID_PATTERN, "mPrivate", pattern),
              "35:20: " + getCheckMessage(MSG_INVALID_PATTERN, "_public", pattern),
              "36:23: " + getCheckMessage(MSG_INVALID_PATTERN, "_protected", pattern),
              "37:13: " + getCheckMessage(MSG_INVALID_PATTERN, "_package", pattern),
              "38:21: " + getCheckMessage(MSG_INVALID_PATTERN, "_private", pattern),
              "42:20: " + getCheckMessage(MSG_INVALID_PATTERN, "mPublic", pattern),
              "43:23: " + getCheckMessage(MSG_INVALID_PATTERN, "mProtected", pattern),
              "44:13: " + getCheckMessage(MSG_INVALID_PATTERN, "mPackage", pattern),
              "45:21: " + getCheckMessage(MSG_INVALID_PATTERN, "mPrivate", pattern),
              "47:20: " + getCheckMessage(MSG_INVALID_PATTERN, "_public", pattern),
              "48:23: " + getCheckMessage(MSG_INVALID_PATTERN, "_protected", pattern),
              "49:13: " + getCheckMessage(MSG_INVALID_PATTERN, "_package", pattern),
              "50:21: " + getCheckMessage(MSG_INVALID_PATTERN, "_private", pattern),
              "74:16: " + getCheckMessage(MSG_INVALID_PATTERN, "mPublic", pattern),
              "75:9: " + getCheckMessage(MSG_INVALID_PATTERN, "mProtected", pattern),
              "76:9: " + getCheckMessage(MSG_INVALID_PATTERN, "mPackage", pattern),
              "77:9: " + getCheckMessage(MSG_INVALID_PATTERN, "mPrivate", pattern),
              "79:16: " + getCheckMessage(MSG_INVALID_PATTERN, "_public", pattern),
              "80:9: " + getCheckMessage(MSG_INVALID_PATTERN, "_protected", pattern),
              "81:9: " + getCheckMessage(MSG_INVALID_PATTERN, "_package", pattern),
              "82:9: " + getCheckMessage(MSG_INVALID_PATTERN, "_private", pattern),
          };
          verifyWithInlineConfigParser(
                  getPath("InputMemberNameExtended.java"), expected);
      }
  
      @Test
      public void testGetAcceptableTokens() {
          final MemberNameCheck memberNameCheckObj = new MemberNameCheck();
          final int[] actual = memberNameCheckObj.getAcceptableTokens();
          final int[] expected = {
              TokenTypes.VARIABLE_DEF,
          };
          assertWithMessage("Default acceptable tokens are invalid")
              .that(actual)
              .isEqualTo(expected);
      }
  
  }
  