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Test Util.groupBy
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test/Unused/UtilSpec.hs
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29
test/Unused/UtilSpec.hs
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module Unused.UtilSpec
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( main
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, spec
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) where
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import Test.Hspec
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import Unused.Util
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data Person = Person
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{ pName :: String
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, pAge :: Int
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} deriving (Eq, Show)
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main :: IO ()
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main = hspec spec
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spec :: Spec
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spec = parallel $
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describe "groupBy" $ do
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it "groups by the result of a function" $ do
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let numbers = [1..10] :: [Int]
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groupBy ((0 ==) . flip mod 2) numbers `shouldBe` [(False, [1, 3, 5, 7, 9]), (True, [2, 4, 6, 8, 10])]
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it "handles records" $ do
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let people = [Person "Jane" 10, Person "Jane" 20, Person "John" 20]
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groupBy pName people `shouldBe` [("Jane", [Person "Jane" 10, Person "Jane" 20]), ("John", [Person "John" 20])]
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groupBy pAge people `shouldBe` [(10, [Person "Jane" 10]), (20, [Person "Jane" 20, Person "John" 20])]
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@ -73,6 +73,7 @@ test-suite unused-test
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, Unused.LikelihoodCalculatorSpec
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, Unused.Grouping.InternalSpec
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, Unused.TermSearch.InternalSpec
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, Unused.UtilSpec
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ghc-options: -threaded -rtsopts -with-rtsopts=-N -Wall -Werror
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default-language: Haskell2010
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