Added cabal and vim dir

cabal/share/x86_64-osx-ghc-7.10.1/HUnit-1.2.5.2/examples/Example.hs

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+-- Example.hs  --  Examples from HUnit user's guide
+--
+-- For more examples, check out the tests directory.  It contains unit tests
+-- for HUnit. 
+
+module Main where
+
+import Test.HUnit
+
+
+foo :: Int -> (Int, Int)
+foo x = (1, x)
+
+partA :: Int -> IO (Int, Int)
+partA v = return (v+2, v+3)
+
+partB :: Int -> IO Bool
+partB v = return (v > 5)
+
+test1 :: Test
+test1 = TestCase (assertEqual "for (foo 3)," (1,2) (foo 3))
+
+test2 :: Test
+test2 = TestCase (do (x,y) <- partA 3
+                     assertEqual "for the first result of partA," 5 x
+                     b <- partB y
+                     assertBool ("(partB " ++ show y ++ ") failed") b)
+
+tests :: Test
+tests = TestList [TestLabel "test1" test1, TestLabel "test2" test2]
+
+tests' :: Test
+tests' = test [ "test1" ~: "(foo 3)" ~: (1,2) ~=? (foo 3),
+                "test2" ~: do (x, y) <- partA 3
+                              assertEqual "for the first result of partA," 5 x
+                              partB y @? "(partB " ++ show y ++ ") failed" ]
+
+main :: IO Counts
+main = do runTestTT tests
+          runTestTT tests'