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|
import expect
import list
pub fn length_test() {
list:length([]) |> expect:equal(_, 0)
list:length([1]) |> expect:equal(_, 1)
list:length([1, 1]) |> expect:equal(_, 2)
list:length([1, 1, 1]) |> expect:equal(_, 3)
}
pub fn reverse_test() {
list:reverse([]) |> expect:equal(_, [])
list:reverse([1, 2, 3, 4, 5]) |> expect:equal(_, [5, 4, 3, 2, 1])
}
pub fn is_empty_test() {
list:is_empty([]) |> expect:true
list:is_empty([1]) |> expect:false
}
pub fn contains_test() {
list:contains([0, 4, 5, 1], 1) |> expect:true
list:contains([0, 4, 5, 7], 1) |> expect:false
list:contains([], 1) |> expect:false
}
pub fn head_test() {
list:head([0, 4, 5, 7])
|> expect:equal(_, Ok(0))
list:head([])
|> expect:is_error
}
pub fn tail_test() {
list:tail([0, 4, 5, 7])
|> expect:equal(_, Ok([4, 5, 7]))
list:tail([0])
|> expect:equal(_, Ok([]))
list:tail([])
|> expect:is_error
}
pub fn filter_test() {
[]
|> list:filter(_, fn(_) { True })
|> expect:equal(_, [])
[0, 4, 5, 7, 3]
|> list:filter(_, fn(_) { True })
|> expect:equal(_, [0, 4, 5, 7, 3])
[0, 4, 5, 7, 3]
|> list:filter(_, fn(x) { x > 4 })
|> expect:equal(_, [5, 7])
[0, 4, 5, 7, 3]
|> list:filter(_, fn(x) { x < 4 })
|> expect:equal(_, [0, 3])
}
pub fn map_test() {
[]
|> list:map(_, fn(x) { x * 2 })
|> expect:equal(_, [])
[0, 4, 5, 7, 3]
|> list:map(_, fn(x) { x * 2 })
|> expect:equal(_, [0, 8, 10, 14, 6])
}
pub fn traverse_test() {
let fun = fn(x) {
case x == 6 || x == 5 || x == 4 {
| True -> Ok(x * 2)
| False -> Error(x)
}
}
[5, 6, 5, 6]
|> list:traverse(_, fun)
|> expect:equal(_, Ok([10, 12, 10, 12]))
[4, 6, 5, 7, 3]
|> list:traverse(_, fun)
|> expect:equal(_, Error(7))
}
pub fn drop_test() {
[]
|> list:drop(_, 5)
|> expect:equal(_, [])
[1, 2, 3, 4, 5, 6, 7, 8]
|> list:drop(_, 5)
|> expect:equal(_, [6, 7, 8])
}
pub fn take_test() {
[]
|> list:take(_, 5)
|> expect:equal(_, [])
[1, 2, 3, 4, 5, 6, 7, 8]
|> list:take(_, 5)
|> expect:equal(_, [1, 2, 3, 4, 5])
}
pub fn new_test() {
list:new() |> expect:equal(_, [])
}
pub fn append_test() {
list:append([1], [2, 3])
|> expect:equal(_, [1, 2, 3])
}
pub fn flatten_test() {
list:flatten([])
|> expect:equal(_, [])
list:flatten([[]])
|> expect:equal(_, [])
list:flatten([[], [], []])
|> expect:equal(_, [])
list:flatten([[1, 2], [], [3, 4]])
|> expect:equal(_, [1, 2, 3, 4])
}
pub fn fold_test() {
[1, 2, 3]
|> list:fold(_, [], fn(x, acc) { [x | acc] })
|> expect:equal(_, [3, 2, 1])
}
pub fn fold_right_test() {
[1, 2, 3]
|> list:fold_right(_, [], fn(x, acc) { [x | acc] })
|> expect:equal(_, [1, 2, 3])
}
pub fn find_test() {
let f = fn(x) {
case x {
| 2 -> Ok(4)
| _ -> Error(0)
}
}
[1, 2, 3]
|> list:find(_, f)
|> expect:equal(_, Ok(4))
[1, 3, 2]
|> list:find(_, f)
|> expect:equal(_, Ok(4))
[1, 3]
|> list:find(_, f)
|> expect:is_error
}
pub fn all_test() {
list:all([1,2,3,4,5], fn(x) { x > 0 })
|> expect:equal(_, True)
list:all([1,2,3,4,5], fn(x) { x < 0 })
|> expect:equal(_, False)
list:all([], fn(_) { False })
|> expect:equal(_, True)
}
|
