Test.hs

module Data.BAByNF.ABNF.Rules.ProseVal.Test where

import Data.Functor ((<&>))

import Test.Tasty qualified as Tasty
import Test.Tasty.HUnit ((@?=))
import Test.Tasty.HUnit qualified as HUnit

import Data.BAByNF.Util.Ascii (stringAsBytesUnsafe)

import Data.BAByNF.Core.Tree qualified as Tree

import Data.BAByNF.ABNF.Model qualified as Model 
import Data.BAByNF.ABNF.Parse (parse)
import Data.BAByNF.ABNF.Rules (rules)
import Data.BAByNF.ABNF.PrettyPrint
import Data.BAByNF.ABNF.Rules.ProseVal qualified as ProseVal


moduleUnderTest :: String
moduleUnderTest = "Data.BAByNF.ABNF.Rules.ProseVal"

testModule :: Tasty.TestTree
testModule = Tasty.testGroup moduleUnderTest 
    [ testPrettyPrint
    , testParse
    , testParseIntoModel
    ]

testPrettyPrint :: Tasty.TestTree
testPrettyPrint = HUnit.testCase "prettyPrint" $
    prettyPrint ProseVal.rule @?= "prose-val = \"<\" *(%x20-3D / %x3F-7E) \">\""

testParse :: Tasty.TestTree
testParse = Tasty.testGroup "parse" $
    [ "<this is prose!>"
    ] <&> \s -> HUnit.testCase (show s) $ 
        either 
            (\msg -> HUnit.assertFailure $ "failed to parse provided string with error: [" ++ msg ++ "]")
            (const $ return ()) 
            (parse rules ProseVal.ref (stringAsBytesUnsafe s))

testParseIntoModel :: Tasty.TestTree
testParseIntoModel = Tasty.testGroup "parseIntoModel" $
    [ ("<this is prose!>", Model.ProseVal (stringAsBytesUnsafe "this is prose!"))
    ] <&> \(s, o) -> HUnit.testCase (show s) $
        do 
            tree <- either 
                (\msg -> HUnit.assertFailure $ "failed to parse provided string with error: [" ++ msg ++ "]") 
                return 
                (parse rules ProseVal.ref (stringAsBytesUnsafe s))
            subTree <- case Tree.asSingleton tree >>= Tree.getSubtreeIfRef ProseVal.ref of
                Nothing -> HUnit.assertFailure $ "expected ProseVal ref node but result is tree with [" ++ show (length (Tree.nodes tree))  ++ "] children."
                Just subTree -> return subTree
            model <- either
                (\msg -> HUnit.assertFailure $ "failed to parse provided string into model with error: [" ++ msg ++ "]") 
                return
                (ProseVal.fromTree subTree)
            model @?= o