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use rayon::prelude::*;
#[test]
fn check_intersperse() {
let v: Vec<_> = (0..1000).into_par_iter().intersperse(-1).collect();
assert_eq!(v.len(), 1999);
for (i, x) in v.into_iter().enumerate() {
assert_eq!(x, if i % 2 == 0 { i as i32 / 2 } else { -1 });
}
}
#[test]
fn check_intersperse_again() {
let v: Vec<_> = (0..1000)
.into_par_iter()
.intersperse(-1)
.intersperse(-2)
.collect();
assert_eq!(v.len(), 3997);
for (i, x) in v.into_iter().enumerate() {
let y = match i % 4 {
0 => i as i32 / 4,
2 => -1,
_ => -2,
};
assert_eq!(x, y);
}
}
#[test]
fn check_intersperse_unindexed() {
let v: Vec<_> = (0..1000).map(|i| i.to_string()).collect();
let s = v.join(",");
let s2 = v.join(";");
let par: String = s.par_split(',').intersperse(";").collect();
assert_eq!(par, s2);
}
#[test]
fn check_intersperse_producer() {
(0..1000)
.into_par_iter()
.intersperse(-1)
.zip_eq(0..1999)
.for_each(|(x, i)| {
assert_eq!(x, if i % 2 == 0 { i / 2 } else { -1 });
});
}
#[test]
fn check_intersperse_rev() {
(0..1000)
.into_par_iter()
.intersperse(-1)
.zip_eq(0..1999)
.rev()
.for_each(|(x, i)| {
assert_eq!(x, if i % 2 == 0 { i / 2 } else { -1 });
});
}