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38 lines
1.4 KiB
Elm
38 lines
1.4 KiB
Elm
module Tests exposing (..)
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import Expect
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import Grains exposing (square)
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import Json.Encode exposing (Value)
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import Test exposing (..)
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tests : Test
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tests =
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describe "Grains"
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[ describe "square"
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[ test "of 1" <|
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\() -> Expect.equal (Just 1) (square 1)
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, test "of 2" <|
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\() -> Expect.equal (Just 2) (square 2)
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, test "of 3" <|
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\() -> Expect.equal (Just 4) (square 3)
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, test "of 4" <|
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\() -> Expect.equal (Just 8) (square 4)
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, test "of 16" <|
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\() -> Expect.equal (Just 32768) (square 16)
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, test "of 32" <|
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\() -> Expect.equal (Just 2147483648) (square 32)
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, test "square 0 raises an exception" <|
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\() -> Expect.equal Nothing (square 0)
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, test "negative square raises an exception" <|
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\() -> Expect.equal Nothing (square -1)
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{-
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Where are the bigger test values?!? Because Javascript's numbers
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can't represent values higher than `Number.MAX_SAFE_INTEGER`
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(i.e. 9007199254740991), we chose to exclude these final values
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to avoid the weirdness. A bit more information can be found
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here: https://github.com/elm-lang/elm-compiler/issues/1246
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-}
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]
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]
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