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strum/strum_tests/tests/as_ref_str.rs
らりお (YOSHIOKA Takuma) af58a6d403 Add derive(AsRefStr) implementation (#10)
Implements AsRef<str> as a non-allocating alternative to deriving ToString. Docs will come later
2017-08-23 19:18:23 -07:00

47 lines
939 B
Rust

extern crate strum;
#[macro_use]
extern crate strum_macros;
use std::str::FromStr;
#[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());
}
#[test]
fn as_blue_str() {
assert_eq!("blue",
(Color::Blue { hue: 0 }).as_ref());
}
#[test]
fn as_yellow_str() {
assert_eq!("yellow", (Color::Yellow).as_ref());
}
#[test]
fn as_green_str() {
assert_eq!("Green", (Color::Green(String::default())).as_ref());
}