let { run, TestEff, assert_eq, test, ? } = import! std.test
let { (<|) } = import! std.function
let prelude = import! std.prelude
let { Applicative, (*>), wrap } = import! std.applicative
let { lazy, force } = import! std.lazy

let { ? } = import! std.effect

let l = lazy (\_ -> 123 + 57)

let tests : TestEff r () =
    assert_eq (force (lazy (\_ -> 2))) 2 *> wrap ()
        *> assert_eq 180 (force l)

test "lazy" <| \_ -> tests