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.sizes;
  
  import static com.google.common.truth.Truth.assertWithMessage;
  import static com.puppycrawl.tools.checkstyle.checks.sizes.RecordComponentNumberCheck.MSG_KEY;
  
  import org.junit.jupiter.api.Test;
  
  import com.puppycrawl.tools.checkstyle.AbstractModuleTestSupport;
  import com.puppycrawl.tools.checkstyle.api.TokenTypes;
  import com.puppycrawl.tools.checkstyle.checks.naming.AccessModifierOption;
  import com.puppycrawl.tools.checkstyle.internal.utils.TestUtil;
  import com.puppycrawl.tools.checkstyle.utils.CommonUtil;
  
  public class RecordComponentNumberCheckTest extends AbstractModuleTestSupport {
  
      @Override
      protected String getPackageLocation() {
          return "com/puppycrawl/tools/checkstyle/checks/sizes/recordcomponentnumber";
      }
  
      @Test
      public void testGetRequiredTokens() {
          final RecordComponentNumberCheck checkObj = new RecordComponentNumberCheck();
          final int[] actual = checkObj.getRequiredTokens();
          final int[] expected = {
              TokenTypes.RECORD_DEF,
          };
  
          assertWithMessage("Default required tokens are invalid")
              .that(actual)
              .isEqualTo(expected);
  
      }
  
      @Test
      public void testGetAcceptableTokens() {
          final RecordComponentNumberCheck checkObj = new RecordComponentNumberCheck();
          final int[] actual = checkObj.getAcceptableTokens();
          final int[] expected = {
              TokenTypes.RECORD_DEF,
          };
  
          assertWithMessage("Default acceptable tokens are invalid")
              .that(actual)
              .isEqualTo(expected);
      }
  
      @Test
      public void testDefault() throws Exception {
  
          final int max = 8;
  
          final String[] expected = {
              "57:5: " + getCheckMessage(MSG_KEY, 14, max),
              "70:9: " + getCheckMessage(MSG_KEY, 14, max),
              "76:13: " + getCheckMessage(MSG_KEY, 14, max),
              "82:17: " + getCheckMessage(MSG_KEY, 11, max),
              "101:5: " + getCheckMessage(MSG_KEY, 15, max),
              "122:5: " + getCheckMessage(MSG_KEY, 15, max),
              "132:5: " + getCheckMessage(MSG_KEY, 15, max),
          };
  
          verifyWithInlineConfigParser(
                  getNonCompilablePath("InputRecordComponentNumber.java"), expected);
      }
  
      @Test
      public void testRecordComponentNumberTopLevel1() throws Exception {
  
          final int max = 8;
  
          final String[] expected = {
              "12:1: " + getCheckMessage(MSG_KEY, 15, max),
          };
  
          verifyWithInlineConfigParser(
                  getNonCompilablePath("InputRecordComponentNumberTopLevel1.java"),
                  expected);
      }
  
      @Test
      public void testRecordComponentNumberTopLevel2() throws Exception {
  
          final String[] expected = CommonUtil.EMPTY_STRING_ARRAY;
  
          verifyWithInlineConfigParser(
                  getNonCompilablePath("InputRecordComponentNumberTopLevel2.java"),
                  expected);
      }
  
      @Test
      public void testRecordComponentNumberMax1() throws Exception {
  
          final int max = 1;
  
          final String[] expected = {
              "28:5: " + getCheckMessage(MSG_KEY, 2, max),
              "32:5: " + getCheckMessage(MSG_KEY, 3, max),
              "36:5: " + getCheckMessage(MSG_KEY, 5, max),
              "52:5: " + getCheckMessage(MSG_KEY, 7, max),
              "57:5: " + getCheckMessage(MSG_KEY, 14, max),
              "66:9: " + getCheckMessage(MSG_KEY, 3, max),
              "70:9: " + getCheckMessage(MSG_KEY, 14, max),
              "76:13: " + getCheckMessage(MSG_KEY, 14, max),
              "82:17: " + getCheckMessage(MSG_KEY, 6, max),
              "96:5: " + getCheckMessage(MSG_KEY, 4, max),
              "100:5: " + getCheckMessage(MSG_KEY, 15, max),
              "110:5: " + getCheckMessage(MSG_KEY, 3, max),
              "114:5: " + getCheckMessage(MSG_KEY, 6, max),
              "125:5: " + getCheckMessage(MSG_KEY, 2, max),
          };
  
          verifyWithInlineConfigParser(
                  getNonCompilablePath("InputRecordComponentNumberMax1.java"), expected);
      }
  
      @Test
      public void testRecordComponentNumberMax20() throws Exception {
          final String[] expected = CommonUtil.EMPTY_STRING_ARRAY;
  
          verifyWithInlineConfigParser(
                  getNonCompilablePath("InputRecordComponentNumberMax20.java"), expected);
      }
  
      @Test
      public void testRecordComponentNumberPrivateModifier() throws Exception {
  
          final int max = 8;
  
          final String[] expected = {
              "70:9: " + getCheckMessage(MSG_KEY, 14, max),
              "76:13: " + getCheckMessage(MSG_KEY, 14, max),
              "122:5: " + getCheckMessage(MSG_KEY, 15, max),
          };
  
          verifyWithInlineConfigParser(
                  getNonCompilablePath("InputRecordComponentNumberPrivateModifier.java"), expected);
      }
  
      /**
       * Checks that the check when given an array, creates it's own instance of
       * the array and is not re-using and possible overwriting the one given to
       * it. Without this, pitest says {@code Arrays.copyOf} is not needed, but it
       * is needed for other style checks.
       *
       * @throws Exception if an error occurs.
       */
      @Test
      public void testCloneInAccessModifiersProperty() throws Exception {
          final AccessModifierOption[] input = {
              AccessModifierOption.PACKAGE,
          };
          final RecordComponentNumberCheck check = new RecordComponentNumberCheck();
          check.setAccessModifiers(input);
  
          assertWithMessage("check creates its own instance of access modifier array")
              .that(System.identityHashCode(
                  TestUtil.getClassDeclaredField(RecordComponentNumberCheck.class, "accessModifiers")
                          .get(check)))
              .isNotEqualTo(System.identityHashCode(input));
      }
  
  }
  