introduce GEvalSpecification

app/Main.hs

@@ -6,5 +6,5 @@ import System.Environment
 main :: IO ()
 main = do
   [expectedFilePath, outFilePath] <- getArgs
-  result <- geval expectedFilePath outFilePath
+  result <- gevalCore MSE expectedFilePath outFilePath
   print $ result

geval.cabal

@@ -20,6 +20,7 @@ library
                      , conduit
                      , conduit-combinators
                      , conduit-extra
+                     , filepath
                      , resourcet
                      , text
   default-language:    Haskell2010

src/GEval.hs

@@ -1,5 +1,9 @@
 module GEval
-    ( geval
+    ( geval,
+      gevalCore,
+      Metric(..),
+      GEvalSpecification(..),
+      defaultGEvalSpecification
     ) where
 
 import Data.Conduit
@@ -12,8 +16,48 @@ import Data.Text
 import Data.Text.Read as TR
 import Control.Applicative
 
-geval :: String -> String -> IO (Double)
-geval expectedFilePath outFilePath = do
+import System.FilePath
+import Data.Maybe
+
+data Metric = MSE | BLEU
+
+defaultOutDirectory = "."
+defaultTestName = "test-A"
+defaultOutFile = "out.tsv"
+defaultExpectedFile = "expected.tsv"
+
+defaultMetric :: Metric
+defaultMetric = MSE
+
+data GEvalSpecification = GEvalSpecification
+                          { gesOutDirectory :: String,
+                            gesExpectedDirectory :: Maybe String,
+                            gesTestName :: String,
+                            gesOutFile :: String,
+                            gesExpectedFile :: String,
+                            gesMetric :: Metric }
+
+
+defaultGEvalSpecification = GEvalSpecification {
+  gesOutDirectory = defaultOutDirectory,
+  gesExpectedDirectory = Nothing,
+  gesTestName = defaultTestName,
+  gesOutFile = defaultOutFile,
+  gesExpectedFile = defaultExpectedFile,
+  gesMetric = defaultMetric }
+
+
+geval :: GEvalSpecification -> IO (Double)
+geval gevalSpec = gevalCore metric expectedFilePath outFilePath
+   where expectedFilePath = expectedDirectory </> testName </> (gesExpectedFile gevalSpec)
+         outFilePath = outDirectory </> testName </> (gesOutFile gevalSpec)
+         expectedDirectory = fromMaybe outDirectory $ gesExpectedDirectory gevalSpec
+         outDirectory = gesOutDirectory gevalSpec
+         testName = gesTestName gevalSpec
+         metric = gesMetric gevalSpec
+
+gevalCore :: Metric -> String -> String -> IO (Double)
+gevalCore MSE expectedFilePath outFilePath = do
   mse <- runResourceT $
     (getZipSource $ (,)
        <$> ZipSource (items expectedFilePath)

stack.yaml

@@ -2,4 +2,4 @@ flags: {}
 packages:
 - '.'
 extra-deps: []
-resolver: lts-2.19
+resolver: nightly-2015-08-06

test/Spec.hs

@@ -7,7 +7,7 @@ main :: IO ()
 main = hspec $ do
   describe "mean square error" $ do
     it "simple test" $ do
-      geval "test/mse-simple/mse-simple/test-A/expected.tsv" "test/mse-simple/mse-simple-solution/test-A/out.tsv" `shouldReturnAlmost` 0.64549722436790
+      geval (defaultGEvalSpecification {gesExpectedDirectory=Just "test/mse-simple/mse-simple", gesOutDirectory="test/mse-simple/mse-simple-solution"}) `shouldReturnAlmost` 0.64549722436790
 
 class AEq a where
     (=~) :: a -> a -> Bool