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use crate::prelude::*;
use std::{fmt, ops::Range};
#[derive(Debug, PartialEq, Eq, Clone, Copy)]
#[cfg_attr(feature = "serialize", derive(Serialize, Deserialize))]
pub struct Binary;
impl Space for Binary {
const DIM: usize = 1;
type Value = bool;
fn card(&self) -> Card { Card::Finite(2) }
fn contains(&self, _: &bool) -> bool { true }
}
impl OrderedSpace for Binary {
fn min(&self) -> Option<bool> { Some(false) }
fn max(&self) -> Option<bool> { Some(true) }
}
impl FiniteSpace for Binary {
fn to_ordinal(&self) -> Range<usize> { 0..1 }
}
impl_union_intersect!(Binary, Binary);
impl fmt::Display for Binary {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
write!(f, "{{0, 1}}")
}
}
#[cfg(test)]
mod tests {
use super::*;
#[cfg(feature = "serialize")]
extern crate serde_test;
#[cfg(feature = "serialize")]
use self::serde_test::{assert_tokens, Token};
#[test]
fn test_dim() {
assert_eq!(Binary::DIM, 1);
}
#[test]
fn test_card() {
let d = Binary;
assert_eq!(d.card(), Card::Finite(2));
}
#[test]
fn test_bounds() {
let d = Binary;
assert_eq!(d.inf().unwrap(), false);
assert_eq!(d.sup().unwrap(), true);
assert!(d.contains(&false));
assert!(d.contains(&true));
}
#[test]
fn test_to_ordinal() {
assert_eq!(Binary.to_ordinal(), 0..1);
}
#[cfg(feature = "serialize")]
#[test]
fn test_serialisation() {
let d = Binary;
assert_tokens(&d, &[Token::UnitStruct { name: "Binary" }]);
}
}