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{-# LANGUAGE TemplateHaskell #-}

{-# OPTIONS_GHC -fno-warn-orphans #-}

{-| Unittests for ganeti-htools.

-}

{-

Copyright (C) 2009, 2010, 2011, 2012 Google Inc.

This program is free software; you can redistribute it and/or modify

it under the terms of the GNU General Public License as published by

the Free Software Foundation; either version 2 of the License, or

(at your option) any later version.

This program is distributed in the hope that it will be useful, but

WITHOUT ANY WARRANTY; without even the implied warranty of

MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

General Public License for more details.

You should have received a copy of the GNU General Public License

along with this program; if not, write to the Free Software

Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA

02110-1301, USA.

-}

module Test.Ganeti.Query.Filter (testQuery_Filter) where

import Test.QuickCheck hiding (Result)

import Test.QuickCheck.Monadic

import qualified Data.Map as Map

import Data.List

import Text.JSON (showJSON)

import Test.Ganeti.TestHelper

import Test.Ganeti.TestCommon

import Test.Ganeti.Objects (genEmptyCluster)

import Ganeti.BasicTypes

import Ganeti.JSON

import Ganeti.Objects

import Ganeti.Query.Language

import Ganeti.Query.Query

import Ganeti.Utils (niceSort)

-- * Helpers

-- | Run a query and check that we got a specific response.

checkQueryResults :: ConfigData -> Query -> String

                  -> [[ResultEntry]] -> Property

checkQueryResults cfg qr descr expected = monadicIO $ do

  result <- run (query cfg False qr) >>= resultProp

  stop $ printTestCase ("Inconsistent results in " ++ descr)

         (qresData result ==? expected)

-- | Makes a node name query, given a filter.

makeNodeQuery :: Filter FilterField -> Query

makeNodeQuery = Query QRNode ["name"]

-- | Checks if a given operation failed.

expectBadQuery :: ConfigData -> Query -> String -> Property

expectBadQuery cfg qr descr = monadicIO $ do

  result <- run (query cfg False qr)

  case result of

    Bad _ -> return ()

    Ok a  -> stop . failTest $ "Expected failure in " ++ descr ++

                               " but got " ++ show a

-- * Test cases

-- | Tests single node filtering: eq should return it, and (lt and gt)

-- should fail.

prop_node_single_filter :: Property

prop_node_single_filter =

  forAll (choose (1, maxNodes)) $ \numnodes ->

  forAll (genEmptyCluster numnodes) $ \cfg ->

  let allnodes = niceSort . Map.keys . fromContainer $ configNodes cfg in

  forAll (elements allnodes) $ \nname ->

  let fvalue = QuotedString nname

      buildflt n = n "name" fvalue

      expsingle = [[ResultEntry RSNormal (Just (showJSON nname))]]

      othernodes = nname `delete` allnodes

      expnot = map ((:[]) . ResultEntry RSNormal . Just . showJSON) othernodes

      test_query = checkQueryResults cfg . makeNodeQuery

  in conjoin

       [ test_query (buildflt EQFilter) "single-name 'EQ' filter" expsingle

       , test_query (NotFilter (buildflt EQFilter))

         "single-name 'NOT EQ' filter" expnot

       , test_query (AndFilter [buildflt LTFilter, buildflt GTFilter])

         "single-name 'AND [LT,GT]' filter" []

       , test_query (AndFilter [buildflt LEFilter, buildflt GEFilter])

         "single-name 'And [LE,GE]' filter" expsingle

       ]

-- | Tests node filtering based on name equality: many 'OrFilter'

-- should return all results combined, many 'AndFilter' together

-- should return nothing. Note that we need at least 2 nodes so that

-- the 'AndFilter' case breaks.

prop_node_many_filter :: Property

prop_node_many_filter =

  forAll (choose (2, maxNodes)) $ \numnodes ->

  forAll (genEmptyCluster numnodes) $ \cfg ->

  let nnames = niceSort . Map.keys . fromContainer $ configNodes cfg

      eqfilter = map (EQFilter "name" . QuotedString) nnames

      alln = map ((:[]) . ResultEntry RSNormal . Just . showJSON) nnames

      test_query = checkQueryResults cfg . makeNodeQuery

      num_zero = NumericValue 0

  in conjoin

     [ test_query (OrFilter eqfilter) "all nodes 'Or' name filter" alln

     , test_query (AndFilter eqfilter) "all nodes 'And' name filter" []

     -- this next test works only because genEmptyCluster generates a

     -- cluster with no instances

     , test_query (EQFilter "pinst_cnt" num_zero) "pinst_cnt 'Eq' 0" alln

     , test_query (GTFilter "sinst_cnt" num_zero) "sinst_cnt 'GT' 0" []

     ]

-- | Tests node regex filtering. This is a very basic test :(

prop_node_regex_filter :: Property

prop_node_regex_filter =

  forAll (choose (0, maxNodes)) $ \numnodes ->

  forAll (genEmptyCluster numnodes) $ \cfg ->

  let nnames = niceSort . Map.keys . fromContainer $ configNodes cfg

      expected = map ((:[]) . ResultEntry RSNormal . Just . showJSON) nnames

      regex = mkRegex ".*"::Result FilterRegex

  in case regex of

       Bad msg -> failTest $ "Can't build regex?! Error: " ++ msg

       Ok rx ->

         checkQueryResults cfg (makeNodeQuery (RegexpFilter "name" rx))

           "rows for all nodes regexp filter"

           expected

-- | Tests node regex filtering. This is a very basic test :(

prop_node_bad_filter :: String -> Int -> Property

prop_node_bad_filter rndname rndint =

  forAll (choose (1, maxNodes)) $ \numnodes ->

  forAll (genEmptyCluster numnodes) $ \cfg ->

  let regex = mkRegex ".*"::Result FilterRegex

      test_query = expectBadQuery cfg . makeNodeQuery

      string_value = QuotedString rndname

      numeric_value = NumericValue $ fromIntegral rndint

  in case regex of

       Bad msg -> failTest $ "Can't build regex?! Error: " ++ msg

       Ok rx ->

         conjoin

           [ test_query (RegexpFilter "offline" rx)

             "regex filter against boolean field"

           , test_query (EQFilter "name" numeric_value)

             "numeric value eq against string field"

           , test_query (TrueFilter "name")

             "true filter against string field"

           , test_query (EQFilter "offline" string_value)

             "quoted string eq against boolean field"

           , test_query (ContainsFilter "name" string_value)

             "quoted string in non-list field"

           , test_query (ContainsFilter "name" numeric_value)

             "numeric value in non-list field"

           ]

testSuite "Query/Filter"

  [ 'prop_node_single_filter

  , 'prop_node_many_filter

  , 'prop_node_regex_filter

  , 'prop_node_bad_filter

  ]