root / htest / Test / Ganeti / Query / Language.hs @ 63b068c1
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{-# LANGUAGE TemplateHaskell #-} |
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{-# OPTIONS_GHC -fno-warn-orphans #-} |
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{-| Unittests for ganeti-htools. |
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-} |
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{- |
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Copyright (C) 2009, 2010, 2011, 2012 Google Inc. |
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This program is free software; you can redistribute it and/or modify |
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it under the terms of the GNU General Public License as published by |
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the Free Software Foundation; either version 2 of the License, or |
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(at your option) any later version. |
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|
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This program is distributed in the hope that it will be useful, but |
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WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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General Public License for more details. |
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|
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You should have received a copy of the GNU General Public License |
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along with this program; if not, write to the Free Software |
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
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02110-1301, USA. |
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-} |
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module Test.Ganeti.Query.Language |
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( testQuery_Language |
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, genFilter |
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) where |
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import Test.QuickCheck |
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import Control.Applicative |
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import Test.Ganeti.TestHelper |
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import Test.Ganeti.TestCommon |
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import qualified Ganeti.Query.Language as Qlang |
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-- | Custom 'Qlang.Filter' generator (top-level), which enforces a |
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-- (sane) limit on the depth of the generated filters. |
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genFilter :: Gen (Qlang.Filter Qlang.FilterField) |
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genFilter = choose (0, 10) >>= genFilter' |
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-- | Custom generator for filters that correctly halves the state of |
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-- the generators at each recursive step, per the QuickCheck |
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-- documentation, in order not to run out of memory. |
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genFilter' :: Int -> Gen (Qlang.Filter Qlang.FilterField) |
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genFilter' 0 = |
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oneof [ return Qlang.EmptyFilter |
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, Qlang.TrueFilter <$> getName |
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, Qlang.EQFilter <$> getName <*> value |
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, Qlang.LTFilter <$> getName <*> value |
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, Qlang.GTFilter <$> getName <*> value |
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, Qlang.LEFilter <$> getName <*> value |
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, Qlang.GEFilter <$> getName <*> value |
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, Qlang.RegexpFilter <$> getName <*> arbitrary |
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, Qlang.ContainsFilter <$> getName <*> value |
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] |
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where value = oneof [ Qlang.QuotedString <$> getName |
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, Qlang.NumericValue <$> arbitrary |
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] |
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genFilter' n = do |
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oneof [ Qlang.AndFilter <$> vectorOf n'' (genFilter' n') |
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, Qlang.OrFilter <$> vectorOf n'' (genFilter' n') |
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, Qlang.NotFilter <$> genFilter' n' |
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] |
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where n' = n `div` 2 -- sub-filter generator size |
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n'' = max n' 2 -- but we don't want empty or 1-element lists, |
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-- so use this for and/or filter list length |
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instance Arbitrary Qlang.ItemType where |
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arbitrary = elements [minBound..maxBound] |
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instance Arbitrary Qlang.FilterRegex where |
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arbitrary = getName >>= Qlang.mkRegex -- a name should be a good regex |
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-- | Tests that serialisation/deserialisation of filters is |
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-- idempotent. |
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prop_Serialisation :: Property |
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prop_Serialisation = |
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forAll genFilter testSerialisation |
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prop_FilterRegex_instances :: Qlang.FilterRegex -> Property |
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prop_FilterRegex_instances rex = |
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printTestCase "failed JSON encoding" (testSerialisation rex) .&&. |
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printTestCase "failed read/show instances" (read (show rex) ==? rex) |
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testSuite "Query/Language" |
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[ 'prop_Serialisation |
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, 'prop_FilterRegex_instances |
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] |