elm/exercises/series/tests/Tests.elm
2017-05-28 08:14:40 +02:00

43 lines
1.5 KiB
Elm

module Tests exposing (..)
import Test exposing (..)
import Expect
import Series exposing (slices)
tests : Test
tests =
describe "Series"
[ test "slices of one" <|
\() ->
Expect.equal (Ok [ [ 0 ], [ 1 ], [ 2 ], [ 3 ], [ 4 ] ])
(slices 1 "01234")
, test "slices of two" <|
\() ->
Expect.equal (Ok [ [ 9, 7 ], [ 7, 8 ], [ 8, 6 ], [ 6, 7 ], [ 7, 5 ], [ 5, 6 ], [ 6, 4 ] ])
(slices 2 "97867564")
, test "slices of three" <|
\() ->
Expect.equal (Ok [ [ 9, 7, 8 ], [ 7, 8, 6 ], [ 8, 6, 7 ], [ 6, 7, 5 ], [ 7, 5, 6 ], [ 5, 6, 4 ] ])
(slices 3 "97867564")
, test "slices of four" <|
\() ->
Expect.equal (Ok [ [ 0, 1, 2, 3 ], [ 1, 2, 3, 4 ] ])
(slices 4 "01234")
, test "slices of five" <|
\() ->
Expect.equal (Ok [ [ 0, 1, 2, 3, 4 ] ])
(slices 5 "01234")
, test "overly long slice" <|
\() ->
Expect.equal (Ok [])
(slices 4 "012")
, test "overly short slice" <|
\() ->
Expect.equal (Err ("Invalid size: 0"))
(slices 0 "01234")
, test "input has non numbers" <|
\() ->
Expect.equal (Err "could not convert string 'a' to an Int")
(slices 2 "0123abc")
]