26 lines
674 B
Rust
26 lines
674 B
Rust
//@ run-pass
|
|
#![allow(unused_variables)]
|
|
#![allow(unused_imports)]
|
|
use std::cmp::{Ord, Ordering, PartialOrd};
|
|
use std::collections::BTreeMap;
|
|
use std::iter::Iterator;
|
|
|
|
#[derive(Eq, Hash, Debug, Ord, PartialEq, PartialOrd)]
|
|
struct Zst;
|
|
|
|
fn main() {
|
|
const N: usize = 8;
|
|
|
|
for len in 0..N {
|
|
let mut tester = BTreeMap::new();
|
|
assert_eq!(tester.len(), 0);
|
|
for bit in 0..len {
|
|
tester.insert(Zst, ());
|
|
}
|
|
assert_eq!(tester.len(), if len == 0 { 0 } else { 1 });
|
|
assert_eq!(tester.iter().count(), if len == 0 { 0 } else { 1 });
|
|
assert_eq!(tester.get(&Zst).is_some(), len > 0);
|
|
tester.clear();
|
|
}
|
|
}
|