#![deny(trivial_numeric_casts)] | |
#[macro_use] | |
extern crate num_derive; | |
#[derive(FromPrimitive, ToPrimitive)] | |
pub enum SomeEnum { | |
A = 1, | |
} | |
#[test] | |
fn test_trivial_numeric_casts() { | |
use num::{FromPrimitive, ToPrimitive}; | |
assert!(SomeEnum::from_u64(1).is_some()); | |
assert!(SomeEnum::from_i64(-1).is_none()); | |
assert_eq!(SomeEnum::A.to_u64(), Some(1)); | |
} |