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use std;
import std::either::*;
import std::ivec::len;
#[test]
fn test_either_left() {
let val = left(10);
fn f_left(x: &int) -> bool { x == 10 }
fn f_right(x: &uint) -> bool { false }
assert (either(f_left, f_right, val));
}
#[test]
fn test_either_right() {
let val = right(10u);
fn f_left(x: &int) -> bool { false }
fn f_right(x: &uint) -> bool { x == 10u }
assert (either(f_left, f_right, val));
}
#[test]
fn test_lefts() {
let input = ~[left(10), right(11), left(12), right(13), left(14)];
let result = lefts(input);
assert (result == ~[10, 12, 14]);
}
#[test]
fn test_lefts_none() {
let input: (t[int, int])[] = ~[right(10), right(10)];
let result = lefts(input);
assert (len(result) == 0u);
}
#[test]
fn test_lefts_empty() {
let input: (t[int, int])[] = ~[];
let result = lefts(input);
assert (len(result) == 0u);
}
#[test]
fn test_rights() {
let input = ~[left(10), right(11), left(12), right(13), left(14)];
let result = rights(input);
assert (result == ~[11, 13]);
}
#[test]
fn test_rights_none() {
let input: (t[int, int])[] = ~[left(10), left(10)];
let result = rights(input);
assert (len(result) == 0u);
}
#[test]
fn test_rights_empty() {
let input: (t[int, int])[] = ~[];
let result = rights(input);
assert (len(result) == 0u);
}
#[test]
fn test_partition() {
let input = ~[left(10), right(11), left(12), right(13), left(14)];
let result = partition(input);
assert (result.lefts.(0) == 10);
assert (result.lefts.(1) == 12);
assert (result.lefts.(2) == 14);
assert (result.rights.(0) == 11);
assert (result.rights.(1) == 13);
}
#[test]
fn test_partition_no_lefts() {
let input: (t[int, int])[] = ~[right(10), right(11)];
let result = partition(input);
assert (len(result.lefts) == 0u);
assert (len(result.rights) == 2u);
}
#[test]
fn test_partition_no_rights() {
let input: (t[int, int])[] = ~[left(10), left(11)];
let result = partition(input);
assert (len(result.lefts) == 2u);
assert (len(result.rights) == 0u);
}
#[test]
fn test_partition_empty() {
let input: (t[int, int])[] = ~[];
let result = partition(input);
assert (len(result.lefts) == 0u);
assert (len(result.rights) == 0u);
}
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