From 0feaf53a9d793b3970ff93a9fb24cd2893f3919e Mon Sep 17 00:00:00 2001
From: James Crayne <jim.crayne@gmail.com>
Date: Wed, 27 Apr 2016 02:12:22 -0400
Subject: utils for writing tests

---
 testkiki/testkiki.hs | 43 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 43 insertions(+)

(limited to 'testkiki/testkiki.hs')

diff --git a/testkiki/testkiki.hs b/testkiki/testkiki.hs
index c45764f..606f268 100644
--- a/testkiki/testkiki.hs
+++ b/testkiki/testkiki.hs
@@ -16,6 +16,7 @@ import System.Exit
 import System.IO
 --import System.Posix.ByteString.FilePath
 import Control.Applicative
+import Data.List
 import Control.Monad
 import qualified Data.ByteString.Char8 as B
 import Data.Time.Clock
@@ -23,6 +24,7 @@ import Data.Time.Clock.POSIX
 import Data.IORef
 import Crypto.Hash.SHA1 (hash)
 import System.IO.Unsafe (unsafePerformIO)
+import ProcessUtils
 
 #if !MIN_VERSION_base(4,7,0)
 setEnv k v = System.Posix.Env.setEnv k v True
@@ -305,3 +307,44 @@ doTests tkConfig = hspec $ do
         appendpaths config str = TKS { gnupghome = gnupghome config ++ str
                                      , chroot = chroot config ++ str
                                      }
+
+
+
+safeFileInfo :: FilePath -> IO (UTCTime,FilePath)
+safeFileInfo file = do
+    mtime <- getModificationTime file
+    let folder = takeDirectory file
+        fileDotOld = file ++ ".old"
+    readProcess "cp" ["-aR",file,fileDotOld] ""
+    return (mtime,fileDotOld)
+
+compareSha1 :: FilePath -> IO Bool
+compareSha1 file = do
+    let folder = takeDirectory file
+        fileDotOld = file ++ ".old"
+    hash1 <- hash <$> B.readFile fileDotOld
+    hash2 <- hash <$> B.readFile file
+    return (hash1 == hash2)
+
+getMTimes :: FilePath -> IO (UTCTime, UTCTime)
+getMTimes file = (,) <$> getModificationTime oldfile <*> getModificationTime file
+    where oldfile = file ++ ".old"
+
+getLineCounts :: FilePath -> IO (Int, Int)
+getLineCounts file = (,) <$> l oldfile <*> l file
+    where oldfile = file ++ ".old"
+          l x = length . B.lines <$> B.readFile x
+
+linesSubtractedAndAdded :: FilePath -> IO (Int,Int)
+linesSubtractedAndAdded file = counts <$> readPipe [("diff",["-u",oldfile,file]),("sed",["-n","4,$ p"])] ""
+    where oldfile = file ++ ".old"
+          counts x = ( length $ filter ("-" `isPrefixOf`) (lines x)
+                     , length $ filter ("+" `isPrefixOf`) (lines x) )
+
+saveOutputOfRun :: FilePath -> IO String -> IO ((FilePath -> IO a) -> (IO a))
+saveOutputOfRun fileToFill action = do
+    action >>= writeFile (fileToFill ++ ".old")
+    return $ \getSomething -> do
+                bRanAgain <- doesFileExist fileToFill
+                when (not bRanAgain) $ action >>= writeFile fileToFill
+                getSomething fileToFill
-- 
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