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strum/strum_tests/tests/as_ref_str.rs
らりお (YOSHIOKA Takuma) 3988beefb9 Add AsStaticRef trait and let derive(AsRefStr) implement it (#24)
`#[derive(AsRefStr)]` will implement `AsStaticRef<str>`, and it
enables us to get `&'static str` by `AsStaticRef::<str>::as_static()`.

This will solve #23.
2018-05-26 10:57:04 -07:00

53 lines
1.2 KiB
Rust

extern crate strum;
#[macro_use]
extern crate strum_macros;
use std::str::FromStr;
use strum::AsStaticRef;
#[derive(Debug,Eq,PartialEq,EnumString,AsRefStr)]
enum Color {
#[strum(to_string="RedRed")]
Red,
#[strum(serialize="b", to_string="blue")]
Blue { hue: usize },
#[strum(serialize="y", serialize="yellow")]
Yellow,
#[strum(default="true")]
Green(String),
}
#[test]
fn color_simple() {
assert_eq!(Color::Red, Color::from_str("RedRed").unwrap());
}
#[test]
fn as_red_str() {
assert_eq!("RedRed",
(Color::Red).as_ref());
assert_eq!(Color::Red,
Color::from_str((Color::Red).as_ref()).unwrap());
let _: &'static str = Color::Red.as_static();
}
#[test]
fn as_blue_str() {
assert_eq!("blue",
(Color::Blue { hue: 0 }).as_ref());
let _: &'static str = (Color::Blue { hue: 0 }).as_static();
}
#[test]
fn as_yellow_str() {
assert_eq!("yellow", (Color::Yellow).as_ref());
let _: &'static str = Color::Yellow.as_static();
}
#[test]
fn as_green_str() {
assert_eq!("Green", (Color::Green(String::default())).as_ref());
let _: &'static str = Color::Green(String::default()).as_static();
}