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 MethodTypeParameterNameCheckTest
      extends AbstractModuleTestSupport {
  
      @Override
      protected String getPackageLocation() {
          return "com/puppycrawl/tools/checkstyle/checks/naming/methodtypeparametername";
      }
  
      @Test
      public void testGetAcceptableTokens() {
          final MethodTypeParameterNameCheck methodTypeParameterNameCheck =
              new MethodTypeParameterNameCheck();
          final int[] expected = {TokenTypes.TYPE_PARAMETER};
  
          assertWithMessage("Default acceptable tokens are invalid")
              .that(methodTypeParameterNameCheck.getAcceptableTokens())
              .isEqualTo(expected);
      }
  
      @Test
      public void testGetRequiredTokens() {
          final MethodTypeParameterNameCheck checkObj =
              new MethodTypeParameterNameCheck();
          final int[] expected = {TokenTypes.TYPE_PARAMETER};
          assertWithMessage("Default required tokens are invalid")
              .that(checkObj.getRequiredTokens())
              .isEqualTo(expected);
      }
  
      @Test
      public void testMethodDefault()
              throws Exception {
  
          final String pattern = "^[A-Z]$";
  
          final String[] expected = {
              "14:13: " + getCheckMessage(MSG_INVALID_PATTERN, "TT", pattern),
              "16:6: " + getCheckMessage(MSG_INVALID_PATTERN, "e_e", pattern),
              "26:6: " + getCheckMessage(MSG_INVALID_PATTERN, "Tfo$o2T", pattern),
              "30:6: " + getCheckMessage(MSG_INVALID_PATTERN, "foo", pattern),
              "35:10: " + getCheckMessage(MSG_INVALID_PATTERN, "_fo", pattern),
          };
          verifyWithInlineConfigParser(
                  getPath("InputMethodTypeParameterName.java"), expected);
      }
  
      @Test
      public void testMethodFooName()
              throws Exception {
  
          final String pattern = "^foo$";
  
          final String[] expected = {
              "14:13: " + getCheckMessage(MSG_INVALID_PATTERN, "TT", pattern),
              "16:6: " + getCheckMessage(MSG_INVALID_PATTERN, "e_e", pattern),
              "26:6: " + getCheckMessage(MSG_INVALID_PATTERN, "Tfo$o2T", pattern),
              "35:10: " + getCheckMessage(MSG_INVALID_PATTERN, "_fo", pattern),
              "42:6: " + getCheckMessage(MSG_INVALID_PATTERN, "E", pattern),
              "44:14: " + getCheckMessage(MSG_INVALID_PATTERN, "T", pattern),
          };
          verifyWithInlineConfigParser(
                  getPath("InputMethodTypeParameterName1.java"), expected);
      }
  
  }
  