}

  #[test]
  fn from_str_number() {
    assert_eq!(parse("0").unwrap(), 0);
    assert_eq!(parse("2099999997689999").unwrap(), 2099999997689999);
    assert!(parse("2099999997690000").is_err());
  }

  #[test]
  fn from_str_degree_invalid_cycle_number() {
    assert!(parse("5°0′0″0‴").is_ok());
    assert!(parse("6°0′0″0‴").is_err());
  }

  #[test]
  fn from_str_degree_invalid_epoch_offset() {
    assert!(parse("0°209999′335″0‴").is_ok());
    assert!(parse("0°210000′336″0‴").is_err());
  }

  #[test]
  fn from_str_degree_invalid_period_offset() {
    assert!(parse("0°2015′2015″0‴").is_ok());
    assert!(parse("0°2016′2016″0‴").is_err());
  }

  #[test]
  fn from_str_degree_invalid_block_offset() {
    assert!(parse("0°0′0″4999999999‴").is_ok());
    assert!(parse("0°0′0″5000000000‴").is_err());
    assert!(parse("0°209999′335″4999999999‴").is_ok());
    assert!(parse("0°0′336″4999999999‴").is_err());
  }

  #[test]
  fn from_str_degree_invalid_period_block_relationship() {
    assert!(parse("0°2015′2015″0‴").is_ok());