82ecd61f5c
Change-Id: I6c6847fac56f0a9a1a2209792e00a3aec5e672b9 Reviewed-on: https://cl.tvl.fyi/c/depot/+/10809 Autosubmit: aspen <root@gws.fyi> Reviewed-by: sterni <sternenseemann@systemli.org> Tested-by: BuildkiteCI Reviewed-by: lukegb <lukegb@tvl.fyi>
66 lines
3.1 KiB
Haskell
66 lines
3.1 KiB
Haskell
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module Xanthous.Data.LevelsSpec (main, test) where
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--------------------------------------------------------------------------------
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import Test.Prelude
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--------------------------------------------------------------------------------
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import qualified Data.Aeson as JSON
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--------------------------------------------------------------------------------
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import Xanthous.Util (between)
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import Xanthous.Data.Levels
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--------------------------------------------------------------------------------
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main :: IO ()
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main = defaultMain test
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test :: TestTree
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test = testGroup "Xanthous.Data.Levels"
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[ testGroup "current"
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[ testProperty "view is extract" $ \(levels :: Levels Int) ->
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levels ^. current === extract levels
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, testProperty "set replaces current" $ \(levels :: Levels Int) new ->
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extract (set current new levels) === new
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, testProperty "set extract is id" $ \(levels :: Levels Int) ->
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set current (extract levels) levels === levels
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, testProperty "set y ∘ set x ≡ set y" $ \(levels :: Levels Int) x y ->
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set current y (set current x levels) === set current y levels
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]
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, localOption (QuickCheckTests 20)
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$ testBatch $ semigroup @(Levels Int) (error "unused", 1 :: Int)
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, testGroup "next/prev"
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[ testGroup "nextLevel"
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[ testProperty "seeks forwards" $ \(levels :: Levels Int) genned ->
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(pos . runIdentity . nextLevel (Identity genned) $ levels)
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=== pos levels + 1
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, testProperty "maintains the invariant" $ \(levels :: Levels Int) genned ->
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let levels' = runIdentity . nextLevel (Identity genned) $ levels
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in between 0 (toEnum $ length levels') $ pos levels'
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, testProperty "extract is total" $ \(levels :: Levels Int) genned ->
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let levels' = runIdentity . nextLevel (Identity genned) $ levels
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in total $ extract levels'
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, testProperty "uses the generated level as the next level"
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$ \(levels :: Levels Int) genned ->
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let levels' = seek (toEnum $ length levels - 1) levels
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levels'' = runIdentity . nextLevel (Identity genned) $ levels'
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in counterexample (show levels'')
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$ extract levels'' === genned
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]
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, testGroup "prevLevel"
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[ testProperty "seeks backwards" $ \(levels :: Levels Int) ->
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case prevLevel levels of
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Nothing -> property Discard
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Just levels' -> pos levels' === pos levels - 1
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, testProperty "maintains the invariant" $ \(levels :: Levels Int) ->
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case prevLevel levels of
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Nothing -> property Discard
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Just levels' -> property $ between 0 (toEnum $ length levels') $ pos levels'
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, testProperty "extract is total" $ \(levels :: Levels Int) ->
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case prevLevel levels of
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Nothing -> property Discard
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Just levels' -> total $ extract levels'
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]
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]
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, testGroup "JSON"
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[ testProperty "toJSON/parseJSON round-trip" $ \(levels :: Levels Int) ->
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JSON.decode (JSON.encode levels) === Just levels
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]
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]
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