amount: u128::max_value(),
        divisibility: 18,
        symbol: None,
      }
      .to_string(),
      "340282366920938463463.374607431768211455"
    );
    assert_eq!(
      Pile {
        amount: u128::max_value(),
        divisibility: MAX_DIVISIBILITY,
        symbol: None,
      }
      .to_string(),
      "3.40282366920938463463374607431768211455"
    );
    assert_eq!(
      Pile {
        amount: 0,
        divisibility: 0,
        symbol: Some('$'),
      }
      .to_string(),
      "$0"
    );
  }
}