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.javadoc;
  
  import static com.google.common.truth.Truth.assertThat;
  import static com.google.common.truth.Truth.assertWithMessage;
  
  import org.junit.jupiter.api.Test;
  
  import com.puppycrawl.tools.checkstyle.utils.JavadocUtil;
  
  public class JavadocTagTest {
  
      /* Additional test for jacoco, since valueOf()
       * is generated by javac and jacoco reports that
       * valueOf() is uncovered.
       */
      @Test
      public void testJavadocTagTypeValueOf() {
          final JavadocUtil.JavadocTagType enumConst =
              JavadocUtil.JavadocTagType.valueOf("ALL");
          assertWithMessage("Invalid enum valueOf result")
              .that(enumConst)
              .isEqualTo(JavadocUtil.JavadocTagType.ALL);
      }
  
      /* Additional test for jacoco, since values()
       * is generated by javac and jacoco reports that
       * values() is uncovered.
       */
      @Test
      public void testJavadocTagTypeValues() {
          final JavadocUtil.JavadocTagType[] enumConstants =
              JavadocUtil.JavadocTagType.values();
          final JavadocUtil.JavadocTagType[] expected = {
              JavadocUtil.JavadocTagType.BLOCK,
              JavadocUtil.JavadocTagType.INLINE,
              JavadocUtil.JavadocTagType.ALL,
          };
          assertWithMessage("Invalid enum constants")
              .that(enumConstants)
              .isEqualTo(expected);
      }
  
      @Test
      public void testToString() {
          final JavadocTag javadocTag = new JavadocTag(0, 1, "author", "firstArg");
  
          final String result = javadocTag.toString();
  
          assertWithMessage("Invalid toString result")
              .that(result)
              .isEqualTo("JavadocTag[tag='author' lineNo=0, columnNo=1, firstArg='firstArg']");
      }
  
      @Test
      public void testJavadocTagReferenceImports() {
          assertThat(new JavadocTag(0, 0, "see", null).canReferenceImports()).isTrue();
          assertThat(new JavadocTag(0, 0, "link", null).canReferenceImports()).isTrue();
          assertThat(new JavadocTag(0, 0, "value", null).canReferenceImports()).isTrue();
          assertThat(new JavadocTag(0, 0, "linkplain", null).canReferenceImports()).isTrue();
          assertThat(new JavadocTag(0, 0, "throws", null).canReferenceImports()).isTrue();
          assertThat(new JavadocTag(0, 0, "exception", null).canReferenceImports()).isTrue();
      }
  
      @Test
      public void testJavadocTagReferenceImportsInvalid() {
          assertThat(new JavadocTag(0, 0, "author", null).canReferenceImports())
                  .isFalse();
      }
  
  }
  