import qualified Grammar
import qualified Registry.Registry as Registry 

import qualified Test.HUnit as HUnit
import qualified System.IO
import qualified Text.Regex as Regex

-- If yiou get a "Prelude.!!: index too large", it probably means that
-- one of these files has empty lines (may be at the end).
wfTagsFile = "./well-formed-tags.txt"
brokenTagsFile = "./broken-tags.txt"
validTagsFile = "./valid-tags.txt"
invalidTagsFile = "./invalid-tags.txt"

registryfile = "./language-subtag-registry"

languageTag = Grammar.tag

getTag line = 
     let fields = Regex.splitRegex (Regex.mkRegex " +") line in
     fields !! 0

shouldBeWellFormed tag =
   HUnit.TestCase (HUnit.assertBool (tag ++ " should be well-formed") 
                        (Grammar.testTag tag == True))

shouldBeBroken tag =
   HUnit.TestCase (HUnit.assertBool (tag ++ " should *not* be well-formed") 
                        (Grammar.testTag tag == False))

shouldBeValid reg tag =
   HUnit.TestCase (HUnit.assertBool (tag ++ " should be valid") 
                        (Registry.testTag reg tag == True))

shouldBeInvalid reg tag =
   HUnit.TestCase (HUnit.assertBool (tag ++ " should *not* be valid") 
                        (Registry.testTag reg tag == False))

tagsFromFile filename = do
       myContents <- System.IO.readFile filename
       let myLines = lines myContents
       return (map getTag myLines)
                    
main = do
       brokenTags <- tagsFromFile brokenTagsFile
       wfTags <- tagsFromFile wfTagsFile
       theregistry <- Registry.readRegistry registryfile
       invalidTags <- tagsFromFile invalidTagsFile
       validTags <- tagsFromFile validTagsFile
       let tests = HUnit.TestList (-- map shouldBeBroken (brokenTags) ++
                                   -- map shouldBeWellFormed (wfTags) ++
                                   -- map (shouldBeValid theregistry) (validTags) ++
                                   map (shouldBeInvalid theregistry) (invalidTags))
       HUnit.runTestTT tests