File: Gen.hs

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haskell-http-media 0.8.1.1-2
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{-# LANGUAGE TupleSections #-}

-- | Contains definitions for generating 'Encoding's.
module Network.HTTP.Media.Encoding.Gen
  ( anything,
    identity,
    genEncoding,
    genConcreteEncoding,
    genDiffEncoding,
    genDiffConcreteEncodings,
  )
where

import Network.HTTP.Media.Encoding.Internal
import Network.HTTP.Media.Gen (genDiffWith, genToken)
import Test.QuickCheck.Gen

-- | The Encoding that matches anything.
anything :: Encoding
anything = Encoding "*"

-- | The default Encoding.
identity :: Encoding
identity = Encoding "identity"

-- | Generates any kind of Encoding.
genEncoding :: Gen Encoding
genEncoding = Encoding <$> genToken

-- | Generates an Encoding that does not match everything.
genConcreteEncoding :: Gen Encoding
genConcreteEncoding = genDiffWith genEncoding anything

-- | Generates a different Encoding to the given one.
genDiffEncoding :: Encoding -> Gen Encoding
genDiffEncoding = genDiffWith genEncoding

-- | Generates two different concrete Encodings.
genDiffConcreteEncodings :: Gen (Encoding, Encoding)
genDiffConcreteEncodings = do
  enc <- genConcreteEncoding
  (enc,) <$> genDiffWith genConcreteEncoding enc