From: Ramakrishnan Muthukrishnan <ram@rkrishnan.org>
Date: Sun, 26 Apr 2015 12:09:01 +0000 (+0530)
Subject: QuickCheck tests now terminate successfully.
X-Git-Url: https://git.rkrishnan.org/%5B/%5D%20/uri/frontends/%22news.html/install-details.html?a=commitdiff_plain;h=308c77eccabe0f1f66959eac3bf0b1686570b0e8;p=functorrent.git

QuickCheck tests now terminate successfully.

The trick is to reduce the amount of data we generate for recursive
types. The hint is in the QuickCheck manual.
---

diff --git a/src/FuncTorrent/Bencode.hs b/src/FuncTorrent/Bencode.hs
index 8b6ff52..62d4767 100644
--- a/src/FuncTorrent/Bencode.hs
+++ b/src/FuncTorrent/Bencode.hs
@@ -38,9 +38,9 @@ instance Arbitrary BVal where
                                , Bstr <$> arbitrary]
                 bval n = oneof [ Bint <$> arbitrary
                                , Bstr <$> arbitrary
-                               , Blist <$> vectorOf n arbitrary
+                               , Blist <$> vectorOf n (bval (n `div` 4))
                                , do keys <- vectorOf n arbitrary
-                                    vals <- vectorOf n arbitrary
+                                    vals <- vectorOf n (bval (n `div` 4))
                                     return $ Bdict $ fromList $ zip keys vals ]
 
 -- getters