use sqlparser::{
      dialect::PostgreSqlDialect,
      tokenizer::{Token, TokenWithSpan, Tokenizer},
  };

  #[test]
  pub fn example_1() {
      let query_lhs = "x?";
      let query_rhs = "x?a";
      let tokens_lhs = Tokenizer::new(&PostgreSqlDialect {}, query_lhs)
          .tokenize()
          .unwrap();
      let tokens_rhs = Tokenizer::new(&PostgreSqlDialect {}, query_rhs)
          .tokenize()
          .unwrap();
      assert_ne!(tokens_lhs, tokens_rhs);
  }

  #[test]
  pub fn example_2() {
      let tokens = Tokenizer::new(&PostgreSqlDialect {}, "x?a")
          .tokenize_with_location()
          .unwrap();
      for token in tokens {
          if let TokenWithSpan {
              token: Token::Question,
              span,
          } = token
          {
              assert_eq!(span.start.column + 1, span.end.column)
          }
      }
  }