Add file reading functions

test/HPath/IO/ReadFileEOFSpec.hs

@@ -0,0 +1,86 @@
+{-# LANGUAGE OverloadedStrings #-}
+
+
+module HPath.IO.ReadFileEOFSpec where
+
+
+import Test.Hspec
+import System.IO.Error
+  (
+    ioeGetErrorType
+  )
+import GHC.IO.Exception
+  (
+    IOErrorType(..)
+  )
+import System.Process
+import Utils
+
+
+
+upTmpDir :: IO ()
+upTmpDir = do
+  setTmpDir "ReadFileEOFSpec"
+  createTmpDir
+
+setupFiles :: IO ()
+setupFiles = do
+  createRegularFile' "fileWithContent"
+  createRegularFile' "fileWithoutContent"
+  createSymlink' "inputFileSymL" "fileWithContent"
+  createDir' "alreadyExistsD"
+  createRegularFile' "noPerms"
+  noPerms "noPerms"
+  createDir' "noPermsD"
+  createRegularFile' "noPermsD/inputFile"
+  noPerms "noPermsD"
+  writeFile' "fileWithContent" "Blahfaselgagaga"
+
+
+cleanupFiles :: IO ()
+cleanupFiles = do
+  deleteFile' "fileWithContent"
+  deleteFile' "fileWithoutContent"
+  deleteFile' "inputFileSymL"
+  deleteDir' "alreadyExistsD"
+  normalFilePerms "noPerms"
+  deleteFile' "noPerms"
+  normalDirPerms "noPermsD"
+  deleteFile' "noPermsD/inputFile"
+  deleteDir' "noPermsD"
+
+
+spec :: Spec
+spec = beforeAll_ (upTmpDir >> setupFiles) $ afterAll_ cleanupFiles $
+  describe "HPath.IO.readFileEOF" $ do
+
+    -- successes --
+    it "readFileEOF (Strict) file with content, everything clear" $ do
+      out <- readFileEOF' "fileWithContent"
+      out `shouldBe` "Blahfaselgagaga"
+
+    it "readFileEOF (Strict) symlink, everything clear" $ do
+      out <- readFileEOF' "inputFileSymL"
+      out `shouldBe` "Blahfaselgagaga"
+
+    it "readFileEOF (Strict) empty file, everything clear" $ do
+      out <- readFileEOF' "fileWithoutContent"
+      out `shouldBe` ""
+
+
+    -- posix failures --
+    it "readFileEOF (Strict) directory, wrong file type" $ do
+      readFileEOF' "alreadyExistsD"
+        `shouldThrow` (\e -> ioeGetErrorType e == InappropriateType)
+
+    it "readFileEOF (Strict) file, no permissions" $ do
+      readFileEOF' "noPerms"
+        `shouldThrow` (\e -> ioeGetErrorType e == PermissionDenied)
+
+    it "readFileEOF (Strict) file, no permissions on dir" $ do
+      readFileEOF' "noPermsD/inputFile"
+        `shouldThrow` (\e -> ioeGetErrorType e == PermissionDenied)
+
+    it "readFileEOF (Strict) file, no such file" $ do
+      readFileEOF' "lalala"
+        `shouldThrow` (\e -> ioeGetErrorType e == NoSuchThing)

test/HPath/IO/ReadFileSpec.hs

@@ -0,0 +1,86 @@
+{-# LANGUAGE OverloadedStrings #-}
+
+
+module HPath.IO.ReadFileSpec where
+
+
+import Test.Hspec
+import System.IO.Error
+  (
+    ioeGetErrorType
+  )
+import GHC.IO.Exception
+  (
+    IOErrorType(..)
+  )
+import System.Process
+import Utils
+
+
+
+upTmpDir :: IO ()
+upTmpDir = do
+  setTmpDir "ReadFileSpec"
+  createTmpDir
+
+setupFiles :: IO ()
+setupFiles = do
+  createRegularFile' "fileWithContent"
+  createRegularFile' "fileWithoutContent"
+  createSymlink' "inputFileSymL" "fileWithContent"
+  createDir' "alreadyExistsD"
+  createRegularFile' "noPerms"
+  noPerms "noPerms"
+  createDir' "noPermsD"
+  createRegularFile' "noPermsD/inputFile"
+  noPerms "noPermsD"
+  writeFile' "fileWithContent" "Blahfaselgagaga"
+
+
+cleanupFiles :: IO ()
+cleanupFiles = do
+  deleteFile' "fileWithContent"
+  deleteFile' "fileWithoutContent"
+  deleteFile' "inputFileSymL"
+  deleteDir' "alreadyExistsD"
+  normalFilePerms "noPerms"
+  deleteFile' "noPerms"
+  normalDirPerms "noPermsD"
+  deleteFile' "noPermsD/inputFile"
+  deleteDir' "noPermsD"
+
+
+spec :: Spec
+spec = beforeAll_ (upTmpDir >> setupFiles) $ afterAll_ cleanupFiles $
+  describe "HPath.IO.readFile" $ do
+
+    -- successes --
+    it "readFile (Strict) file with content, everything clear" $ do
+      out <- readFile' "fileWithContent"
+      out `shouldBe` "Blahfaselgagaga"
+
+    it "readFile (Strict) symlink, everything clear" $ do
+      out <- readFile' "inputFileSymL"
+      out `shouldBe` "Blahfaselgagaga"
+
+    it "readFile (Strict) empty file, everything clear" $ do
+      out <- readFile' "fileWithoutContent"
+      out `shouldBe` ""
+
+
+    -- posix failures --
+    it "readFile (Strict) directory, wrong file type" $ do
+      readFile' "alreadyExistsD"
+        `shouldThrow` (\e -> ioeGetErrorType e == InappropriateType)
+
+    it "readFile (Strict) file, no permissions" $ do
+      readFile' "noPerms"
+        `shouldThrow` (\e -> ioeGetErrorType e == PermissionDenied)
+
+    it "readFile (Strict) file, no permissions on dir" $ do
+      readFile' "noPermsD/inputFile"
+        `shouldThrow` (\e -> ioeGetErrorType e == PermissionDenied)
+
+    it "readFile (Strict) file, no such file" $ do
+      readFile' "lalala"
+        `shouldThrow` (\e -> ioeGetErrorType e == NoSuchThing)

test/Utils.hs

@@ -28,6 +28,7 @@ import Data.IORef
   )
 import HPath.IO
 import HPath.IO.Errors
+import Prelude hiding (readFile)
 import Data.Maybe
   (
     fromJust
@@ -46,6 +47,7 @@ import Data.ByteString
   (
     ByteString
   )
+import qualified Data.ByteString.Lazy as L
 import System.Posix.Files.ByteString
   (
     groupExecuteMode
@@ -243,6 +245,12 @@ normalDirPerms path =
   withTmpDir path $ \p -> setFileMode (P.fromAbs p) newDirPerms
 
 
+normalFilePerms :: ByteString -> IO ()
+{-# NOINLINE normalFilePerms #-}
+normalFilePerms path =
+  withTmpDir path $ \p -> setFileMode (P.fromAbs p) newFilePerms
+
+
 getFileType' :: ByteString -> IO FileType
 {-# NOINLINE getFileType' #-}
 getFileType' path = withTmpDir path getFileType
@@ -288,3 +296,13 @@ allDirectoryContents' :: ByteString -> IO [ByteString]
 allDirectoryContents' ip =
   withTmpDir ip $ \p -> DT.allDirectoryContents' (P.fromAbs p)
 
+
+readFile' :: ByteString -> IO ByteString
+{-# NOINLINE readFile' #-}
+readFile' p = withTmpDir p readFile
+
+
+readFileEOF' :: ByteString -> IO L.ByteString
+{-# NOINLINE readFileEOF' #-}
+readFileEOF' p = withTmpDir p readFileEOF
+