[commit: ghc] wip/nfs-locking: #146, add tests for chunksOfSize (d001140)

[git at git.haskell.org]

Repository : ssh://git@git.haskell.org/ghc

On branch  : wip/nfs-locking
Link       : http://ghc.haskell.org/trac/ghc/changeset/d001140948a06ae50475eb919010d192e37b3829/ghc

>---------------------------------------------------------------

commit d001140948a06ae50475eb919010d192e37b3829
Author: Neil Mitchell <ndmitchell at gmail.com>
Date:   Mon Jan 11 11:06:54 2016 +0000

    #146, add tests for chunksOfSize


>---------------------------------------------------------------

d001140948a06ae50475eb919010d192e37b3829
 src/Settings/Builders/Ar.hs | 2 +-
 src/Test.hs                 | 5 +++++
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/Settings/Builders/Ar.hs b/src/Settings/Builders/Ar.hs
index fc43d45..8cf175f 100644
--- a/src/Settings/Builders/Ar.hs
+++ b/src/Settings/Builders/Ar.hs
@@ -1,4 +1,4 @@
-module Settings.Builders.Ar (arBuilderArgs, arCmd) where
+module Settings.Builders.Ar (arBuilderArgs, arCmd, chunksOfSize) where
 
 import Base
 import Expression
diff --git a/src/Test.hs b/src/Test.hs
index a55e6e6..6cbc557 100644
--- a/src/Test.hs
+++ b/src/Test.hs
@@ -6,6 +6,7 @@ module Test (testRules) where
 import Way
 import Development.Shake
 import Test.QuickCheck
+import Settings.Builders.Ar(chunksOfSize)
 
 instance Arbitrary Way where
     arbitrary = wayFromUnits <$> arbitrary
@@ -17,6 +18,10 @@ testRules :: Rules ()
 testRules =
     phony "selftest" $ do
         test $ \(x :: Way) -> read (show x) == x
+        test $ \n xs ->
+            let res = chunksOfSize n xs
+            in concat res == xs && all (\r -> length r == 1 || length (concat r) <= n) res
+        test $ chunksOfSize 3 ["a","b","c","defg","hi","jk"] == [["a","b","c"],["defg"],["hi"],["jk"]]
 
 
 test :: Testable a => a -> Action ()