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strum/strum_tests/tests/display.rs
Jonas Platte b517f232aa
Update strum to Rust edition 2018 (#110)
* Set all crates to edition 2018

* Remove redundant imports

* Remove extern crate declarations for cargo dependencies
2020-09-17 11:21:21 -07:00

73 lines
1.6 KiB
Rust

use strum::{Display, EnumString};
#[derive(Debug, Eq, PartialEq, EnumString, Display)]
enum Color {
#[strum(to_string = "RedRed")]
Red,
#[strum(serialize = "b", to_string = "blue")]
Blue { hue: usize },
#[strum(serialize = "y", serialize = "yellow")]
Yellow,
#[strum(default)]
Green(String),
}
#[test]
fn to_blue_string() {
assert_eq!(String::from("blue"), format!("{}", Color::Blue { hue: 0 }));
}
#[test]
fn test_formatters() {
assert_eq!(
String::from(" blue"),
format!("{:>6}", Color::Blue { hue: 0 })
);
assert_eq!(
String::from("blue "),
format!("{:<6}", Color::Blue { hue: 0 })
);
assert_eq!(
String::from(" blue "),
format!("{:^6}", Color::Blue { hue: 0 })
);
assert_eq!(String::from("bl"), format!("{:.2}", Color::Blue { hue: 0 }));
}
#[test]
fn to_yellow_string() {
assert_eq!(String::from("yellow"), format!("{}", Color::Yellow));
}
#[test]
fn to_red_string() {
assert_eq!(String::from("RedRed"), format!("{}", Color::Red));
}
#[derive(Display, Debug, Eq, PartialEq)]
#[strum(serialize_all = "snake_case")]
enum Brightness {
DarkBlack,
Dim {
glow: usize,
},
#[strum(serialize = "bright")]
BrightWhite,
}
#[test]
fn brightness_to_string() {
assert_eq!(
String::from("dark_black"),
Brightness::DarkBlack.to_string().as_ref()
);
assert_eq!(
String::from("dim"),
Brightness::Dim { glow: 0 }.to_string().as_ref()
);
assert_eq!(
String::from("bright"),
Brightness::BrightWhite.to_string().as_ref()
);
}