From 48cbf1244b762d3a52e15d16ba0c3391f095501c Mon Sep 17 00:00:00 2001
From: Sam Truzjan <pxqr.sta@gmail.com>
Date: Sun, 16 Feb 2014 02:50:07 +0400
Subject: Add 2 more behaviours for routing table

---
 tests/Network/BitTorrent/DHT/RoutingSpec.hs | 59 ++++++++++++++++++++++++++++-
 1 file changed, 58 insertions(+), 1 deletion(-)

diff --git a/tests/Network/BitTorrent/DHT/RoutingSpec.hs b/tests/Network/BitTorrent/DHT/RoutingSpec.hs
index e032e27d..a92fec38 100644
--- a/tests/Network/BitTorrent/DHT/RoutingSpec.hs
+++ b/tests/Network/BitTorrent/DHT/RoutingSpec.hs
@@ -1,12 +1,69 @@
+{-# LANGUAGE ScopedTypeVariables #-}
 module Network.BitTorrent.DHT.RoutingSpec (spec) where
+import Control.Applicative
+import Control.Monad.State
 import Data.Default
+import Data.List as L
+import Data.Maybe
 import Test.Hspec
+import Test.QuickCheck
 
 import Network.BitTorrent.Core
 import Network.BitTorrent.DHT.Routing as T
 
+import Network.BitTorrent.CoreSpec hiding (spec)
+
+
+type Network ip = [NodeAddr ip]
+
+data Env ip = Env
+  { currentTime :: Timestamp
+  , network     :: Network ip
+  } deriving Show
+
+type Simulation ip = State (Env ip)
+
+runSimulation :: Eq ip => Env ip -> Routing ip a -> Maybe a
+runSimulation e m = evalState (runRouting ping closest timestamp m) e
+  where
+    ping    addr = gets (L.elem addr . network)
+    closest nid  = undefined
+    timestamp    = gets currentTime
+
+instance Arbitrary ip => Arbitrary (Env ip) where
+  arbitrary = Env <$> arbitrary <*> arbitrary
+
+instance (Arbitrary ip, Eq ip) => Arbitrary (Table ip) where
+  arbitrary = do
+    thisId  <- arbitrary
+    bucketN <- choose (1, 20)
+    let table = nullTable thisId bucketN
+
+--    nodeN   <- (`mod` bucketN) <$> arbitrary
+--    nodes   <- vector nodeN
+
+    node    <- arbitrary
+    mt <- runSimulation  <$> arbitrary
+          <*> pure (T.insert node table)
+          --(foldM (flip fillTable) table nodes)
+    return (fromJust mt)
+   where
+    fillTable x t = do
+      t' <- T.insert x t
+      return $ if T.full t' then t else t'
+
 spec :: Spec
 spec = do
   describe "size" $ do
     it "null table is empty" $ do
-      T.size (nullTable def 2 :: Table IPv4) `shouldBe` 0
\ No newline at end of file
+      T.size (nullTable def 2 :: Table IPv4) `shouldBe` 0
+
+    it "the same node never appear in different buckets" $ property $ \ t -> do
+      let xss = T.toList (t :: Table Int)
+      let justOnce x = L.length (L.filter (L.elem x) xss) == 1
+      L.all justOnce (L.concat xss)
+
+    it "insert is idemponent" $ property $ \ (e :: Env Int) n t -> do
+      let t1 = runSimulation e (T.insert n t)
+      let t2 = runSimulation e (T.insert n t >>= T.insert n)
+      t1 `shouldBe` t2
\ No newline at end of file
-- 
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