@Test
  public void testEmptyJavadocCommentAst() {
    DetailAST commentBegin = new DetailAST();
    commentBegin.setType(TokenTypes.BLOCK_COMMENT_BEGIN);
    commentBegin.setText("/*");

    DetailAST javadocCommentContent = new DetailAST();
    javadocCommentContent.setType(TokenTypes.COMMENT_CONTENT);
    javadocCommentContent.setText("*");

    DetailAST commentEnd = new DetailAST();
    commentEnd.setType(TokenTypes.BLOCK_COMMENT_END);
    commentEnd.setText("*/");

    commentBegin.setFirstChild(javadocCommentContent);
    javadocCommentContent.setNextSibling(commentEnd);

    assertTrue(JavadocUtils.isJavadocComment(commentBegin));
  }
 @Test
 public void testEmptyJavadocComment() {
   final String emptyJavadocComment = "*";
   assertTrue(JavadocUtils.isJavadocComment(emptyJavadocComment));
 }
 @Test
 public void testEmptyBlockComment() {
   final String emptyComment = "";
   assertFalse(JavadocUtils.isJavadocComment(emptyComment));
 }