src/libstd/num/uint_macros.rs

   1 // Copyright 2012-2014 The Rust Project Developers. See the COPYRIGHT
   2 // file at the top-level directory of this distribution and at
   3 // http://rust-lang.org/COPYRIGHT.
   4 //
   5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
   6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
   7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
   8 // option. This file may not be copied, modified, or distributed
   9 // except according to those terms.
  10
  11 #![unstable(feature = "std_misc")]
  12 #![doc(hidden)]
  13 #![allow(unsigned_negation)]
  14
  15 macro_rules! uint_module { ($T:ident) => (
  16
  17 #[cfg(test)]
  18 mod tests {
  19     use prelude::v1::*;
  20
  21     fn from_str<T: ::str::FromStr>(t: &str) -> Option<T> {
  22         ::str::FromStr::from_str(t).ok()
  23     }
  24
  25     #[test]
  26     pub fn test_from_str() {
  27         assert_eq!(from_str::<$T>("0"), Some(0 as $T));
  28         assert_eq!(from_str::<$T>("3"), Some(3 as $T));
  29         assert_eq!(from_str::<$T>("10"), Some(10 as $T));
  30         assert_eq!(from_str::<u32>("123456789"), Some(123456789 as u32));
  31         assert_eq!(from_str::<$T>("00100"), Some(100 as $T));
  32
  33         assert_eq!(from_str::<$T>(""), None);
  34         assert_eq!(from_str::<$T>(" "), None);
  35         assert_eq!(from_str::<$T>("x"), None);
  36     }
  37
  38     #[test]
  39     pub fn test_parse_bytes() {
  40         assert_eq!($T::from_str_radix("123", 10), Ok(123 as $T));
  41         assert_eq!($T::from_str_radix("1001", 2), Ok(9 as $T));
  42         assert_eq!($T::from_str_radix("123", 8), Ok(83 as $T));
  43         assert_eq!(u16::from_str_radix("123", 16), Ok(291 as u16));
  44         assert_eq!(u16::from_str_radix("ffff", 16), Ok(65535 as u16));
  45         assert_eq!($T::from_str_radix("z", 36), Ok(35 as $T));
  46
  47         assert_eq!($T::from_str_radix("Z", 10).ok(), None::<$T>);
  48         assert_eq!($T::from_str_radix("_", 2).ok(), None::<$T>);
  49     }
  50 }
  51
  52 ) }