hjugement-protocol/tests/HUnit/Election.hs

   1 {-# LANGUAGE DataKinds #-}
   2 {-# LANGUAGE OverloadedStrings #-}
   3 {-# LANGUAGE PatternSynonyms #-}
   4 module HUnit.Election where
   5
   6 import Test.Tasty.HUnit
   7 import qualified Data.Aeson as JSON
   8 import qualified Data.List as List
   9 import qualified Data.Text as Text
  10 import qualified System.Random as Random
  11
  12 import Voting.Protocol
  13
  14 import Utils
  15
  16 hunit :: Reifies v Version => Proxy v -> TestTree
  17 hunit v = testGroup "Election" $
  18  [ testGroup "groupGenInverses"
  19          [ testCase "WeakParams" $
  20                 reify weakFFC $ \(Proxy::Proxy c) ->
  21                         List.take 10 (groupGenInverses @_ @c) @?=
  22                                 [groupGen^neg (fromNatural n) | n <- [0..9]]
  23          , testCase "BeleniosParams" $
  24                 reify beleniosFFC $ \(Proxy::Proxy c) ->
  25                         List.take 10 (groupGenInverses @_ @c) @?=
  26                                 [groupGen^neg (fromNatural n) | n <- [0..9]]
  27          ]
  28  , testGroup "encryptBallot" $
  29          [ hunitsEncryptBallot v weakFFC
  30          , hunitsEncryptBallot v beleniosFFC
  31          ]
  32  ]
  33
  34 hunitsEncryptBallot ::
  35  Group crypto => Key crypto => JSON.ToJSON crypto =>
  36  Reifies v Version => Proxy v ->
  37  crypto -> TestTree
  38 hunitsEncryptBallot v crypto =
  39         testGroup (Text.unpack $ cryptoName crypto)
  40          [ hunitEncryptBallot v crypto 0
  41                  [Question "q1" ["a1","a2","a3"] zero one]
  42                  [[True, False, False]]
  43                  (Right True)
  44          , hunitEncryptBallot v crypto 0
  45                  [Question "q1" ["a1","a2","a3"] zero one]
  46                  [[False, False, False]]
  47                  (Right True)
  48          , hunitEncryptBallot v crypto 0
  49                  [Question "q1" ["a1","a2","a3"] zero one]
  50                  [[False, False, False]]
  51                  (Right True)
  52          , hunitEncryptBallot v crypto 0
  53                  [Question "q1" [] zero one]
  54                  []
  55                  (Left (ErrorBallot_WrongNumberOfAnswers 0 1))
  56          , hunitEncryptBallot v crypto 0
  57                  [Question "q1" ["a1","a2"] one one]
  58                  [[True]]
  59                  (Left (ErrorBallot_Answer (ErrorAnswer_WrongNumberOfOpinions 1 2)))
  60          , hunitEncryptBallot v crypto 0
  61                  [Question "q1" ["a1","a2","a3"] zero one]
  62                  [[True, True, False]]
  63                  (Left (ErrorBallot_Answer (ErrorAnswer_WrongSumOfOpinions 2 0 1)))
  64          , hunitEncryptBallot v crypto 0
  65                  [Question "q1" ["a1","a2","a3"] one one]
  66                  [[False, False, False]]
  67                  (Left (ErrorBallot_Answer (ErrorAnswer_WrongSumOfOpinions 0 1 1)))
  68          , hunitEncryptBallot v crypto 0
  69                  [Question "q1" ["a1","a2"] one one]
  70                  [[False, False, True]]
  71                  (Left (ErrorBallot_Answer (ErrorAnswer_WrongNumberOfOpinions 3 2)))
  72          , hunitEncryptBallot v crypto 0
  73                  [ Question "q1" ["a11","a12","a13"] zero (one+one)
  74                  , Question "q2" ["a21","a22","a23"] one one
  75                  ]
  76                  [ [True, False, True]
  77                  , [False, True, False] ]
  78                  (Right True)
  79          ]
  80
  81 hunitEncryptBallot ::
  82  Group crypto => Key crypto => JSON.ToJSON crypto =>
  83  Reifies v Version => Proxy v ->
  84  crypto -> Int -> [Question v] -> [[Bool]] ->
  85  Either ErrorBallot Bool ->
  86  TestTree
  87 hunitEncryptBallot v election_crypto seed election_questions opins exp =
  88         let got =
  89                 reify election_crypto $ \case
  90                  (c::Proxy c) | Dict <- groupDict c ->
  91                         runExcept $
  92                         (`evalStateT` Random.mkStdGen seed) $ do
  93                                 election_uuid <- randomUUID
  94                                 cred <- randomCredential
  95                                 let ballotSecKey = credentialSecretKey @_ @c election_uuid cred
  96                                 election_public_key <- publicKey <$> randomSecretKey
  97                                 let elec = Election
  98                                          { election_name        = "election"
  99                                          , election_description = "description"
 100                                          , election_hash        = hashElection elec
 101                                          , election_version     = Just (reflect v)
 102                                          , ..
 103                                          }
 104                                 verifyBallot elec
 105                                  <$> encryptBallot elec (Just ballotSecKey) opins
 106         in
 107         testCase (show opins) $
 108                 got @?= exp