elm/exercises/grains/tests/Tests.elm
2017-05-28 14:51:51 -04:00

30 lines
984 B
Elm

module Tests exposing (..)
import Expect
import Grains exposing (square)
import Json.Encode exposing (Value)
import Test exposing (..)
tests : Test
tests =
describe "Grains"
[ describe "square"
[ test "of 1" <|
\() -> Expect.equal (Just 1) (square 1)
, test "of 2" <|
\() -> Expect.equal (Just 2) (square 2)
, test "of 3" <|
\() -> Expect.equal (Just 4) (square 3)
, test "of 4" <|
\() -> Expect.equal (Just 8) (square 4)
, test "of 16" <|
\() -> Expect.equal (Just 32768) (square 16)
, test "of 32" <|
\() -> Expect.equal (Just 2147483648) (square 32)
, test "square 0 raises an exception" <|
\() -> Expect.equal Nothing (square 0)
, test "negative square raises an exception" <|
\() -> Expect.equal Nothing (square -1)
]
]