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module UnitTests.Distribution.Solver.Modular.MessageUtils ( tests ) where
import Distribution.Solver.Modular.MessageUtils
(allKnownExtensions, cutoffRange, withinRange, mostSimilarElement)
import Language.Haskell.Extension (knownLanguages)
import Test.Tasty
import Test.Tasty.HUnit
import Test.Tasty.QuickCheck
tests :: [TestTree]
tests = testProperty "the equal string is always the closest" propEqualStringClosest : assertionTests
-- The equal string will always be the most similar element
propEqualStringClosest :: String -> Bool
propEqualStringClosest str = mostSimilarElement str [str] == str
assertionTests :: [TestTree]
assertionTests = map (testCase "assert equals") (extensionAssertions ++ languageAssertions) ++ map (testCase "assert truthy") rangeAssertions
extensionAssertions :: [Assertion]
extensionAssertions = map (`testClosest` extensionStrings) shouldSuggestExtension
languageAssertions :: [Assertion]
languageAssertions = map (`testClosest` languageStrings) shouldSuggestLanguage
testClosest :: (String, String) -> [String] -> Assertion
testClosest (misspelled, closestMatch) elems = assertEqual "Strings should match" closestMatch (mostSimilarElement misspelled elems)
extensionStrings :: [String]
extensionStrings = allKnownExtensions
languageStrings :: [String]
languageStrings = show <$> knownLanguages
-- Given x misspelled extension should suggest y extension
shouldSuggestExtension :: [(String, String)]
shouldSuggestExtension =
[ ("FlexibleConstraints", "FlexibleContexts")
, ("FlexibleInstantiation", "FlexibleInstances")
, ("GATs", "GADTs")
, ("MultiTypeClass", "MultiParamTypeClasses")
, ("NoMonoLoclBinds", "NoMonoLocalBinds")
, ("NoLamdaCase", "NoLambdaCase")
]
-- Given x misspelled language should suggest y language
shouldSuggestLanguage :: [(String, String)]
shouldSuggestLanguage =
[ ("GHC2020", "GHC2021")
, ("Haskell2011", "Haskell2010")
, ("Hugs98", "Haskell98")
]
rangeAssertions :: [Assertion]
rangeAssertions = map (testRange cutoffRange extensionStrings) outOfBounds
isOutOfBounds :: Int -> String -> String -> Bool
isOutOfBounds range a b = not $ withinRange range a b
testRange :: Int -> [String] -> String -> Assertion
testRange range elems erronousElement = assertBool "String should be out of bounds to make a spelling suggestion" (isOutOfBounds range erronousElement suggestion)
where
suggestion = mostSimilarElement erronousElement elems
outOfBounds :: [String]
outOfBounds =
[ "HopefullyThisExtensionWontOccur"
, "ThisIsNotEvenRemotelyAnExtension"
, "IsThisMaybeAnExtension"
]
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