Add IO modules, previously from HSFM

test/HPath/IO/CreateDirSpec.hs

@@ -0,0 +1,54 @@
+{-# LANGUAGE OverloadedStrings #-}
+
+module HPath.IO.CreateDirSpec where
+
+
+import Test.Hspec
+import System.IO.Error
+  (
+    ioeGetErrorType
+  )
+import GHC.IO.Exception
+  (
+    IOErrorType(..)
+  )
+import Utils
+import qualified Data.ByteString as BS
+import           Data.ByteString.UTF8 (toString)
+
+
+ba :: BS.ByteString -> BS.ByteString -> BS.ByteString
+ba = BS.append
+
+specDir :: BS.ByteString
+specDir = "test/HPath/IO/createDirSpec/"
+
+specDir' :: String
+specDir' = toString specDir
+
+
+spec :: Spec
+spec =
+  describe "HPath.IO.createDir" $ do
+
+    -- successes --
+    it "createDir, all fine" $ do
+      createDir' (specDir `ba` "newDir")
+      removeDirIfExists (specDir `ba` "newDir")
+
+    -- posix failures --
+    it "createDir, can't write to output directory" $
+      createDir' (specDir `ba` "noWritePerms/newDir")
+        `shouldThrow`
+        (\e -> ioeGetErrorType e == PermissionDenied)
+
+    it "createDir, can't open output directory" $
+      createDir' (specDir `ba` "noPerms/newDir")
+        `shouldThrow`
+        (\e -> ioeGetErrorType e == PermissionDenied)
+
+    it "createDir, destination directory already exists" $
+      createDir' (specDir `ba` "alreadyExists")
+        `shouldThrow`
+        (\e -> ioeGetErrorType e == AlreadyExists)
+