rust/src/test/run-pass/lib-list.rs

use std;
import std::list;
import std::list::car;
import std::list::cdr;
import std::list::from_vec;
import std::option;

fn test_from_vec() {
  auto l = from_vec([0, 1, 2]);
  assert (car(l) == 0);
  assert (car(cdr(l)) == 1);
  assert (car(cdr(cdr(l))) == 2);
}

fn test_foldl() {
  auto l = from_vec([0, 1, 2, 3, 4]);
  fn add (&int a, &uint b) -> uint {
    ret (a as uint) + b;
  }
  auto res = list::foldl(l, 0u, add);
  assert (res == 10u);
}

fn test_find_success() {
  auto l = from_vec([0, 1, 2]);
  fn match (&int i) -> option::t[int] {
    ret if (i == 2) {
      option::some(i)
    } else {
      option::none[int]
    };
  }
  auto res = list::find(l, match);
  assert (res == option::some(2));
}

fn test_find_fail() {
  auto l = from_vec([0, 1, 2]);
  fn match (&int i) -> option::t[int] {
    ret option::none[int];
  }
  auto res = list::find(l, match);
  assert (res == option::none[int]);
}

fn test_length() {
  auto l = from_vec([0, 1, 2]);
  assert (list::length(l) == 3u);
}

fn main() {
  test_from_vec();
  test_foldl();
  test_find_success();
  test_find_fail();
  test_length();
}