Synnefo » snf-ganeti » ganeti-local

{-# 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.HTools.Backend.Simu (testHTools_Backend_Simu) where

import Test.QuickCheck hiding (Result)

import Control.Monad

import qualified Data.IntMap as IntMap

import Text.Printf (printf)

import Test.Ganeti.TestHelper

import Test.Ganeti.TestCommon

import Ganeti.BasicTypes

import qualified Ganeti.Constants as C

import qualified Ganeti.HTools.Backend.Simu as Simu

import qualified Ganeti.HTools.Container as Container

import qualified Ganeti.HTools.Group as Group

import qualified Ganeti.HTools.Loader as Loader

import qualified Ganeti.HTools.Node as Node

import qualified Ganeti.HTools.Types as Types

-- | Generates a tuple of specs for simulation.

genSimuSpec :: Gen (String, Int, Int, Int, Int)

genSimuSpec = do

  pol <- elements [C.allocPolicyPreferred,

                   C.allocPolicyLastResort, C.allocPolicyUnallocable,

                  "p", "a", "u"]

 -- should be reasonable (nodes/group), bigger values only complicate

 -- the display of failed tests, and we don't care (in this particular

 -- test) about big node groups

  nodes <- choose (0, 20)

  dsk <- choose (0, maxDsk)

  mem <- choose (0, maxMem)

  cpu <- choose (0, maxCpu)

  return (pol, nodes, dsk, mem, cpu)

-- | Checks that given a set of corrects specs, we can load them

-- successfully, and that at high-level the values look right.

prop_Load :: Property

prop_Load =

  forAll (choose (0, 10)) $ \ngroups ->

  forAll (replicateM ngroups genSimuSpec) $ \specs ->

  let strspecs = map (\(p, n, d, m, c) -> printf "%s,%d,%d,%d,%d"

                                          p n d m c::String) specs

      totnodes = sum $ map (\(_, n, _, _, _) -> n) specs

      mdc_in = concatMap (\(_, n, d, m, c) ->

                            replicate n (fromIntegral m, fromIntegral d,

                                         fromIntegral c,

                                         fromIntegral m, fromIntegral d))

               specs :: [(Double, Double, Double, Int, Int)]

  in case Simu.parseData strspecs of

       Bad msg -> failTest $ "Failed to load specs: " ++ msg

       Ok (Loader.ClusterData gl nl il tags ipol) ->

         let nodes = map snd $ IntMap.toAscList nl

             nidx = map Node.idx nodes

             mdc_out = map (\n -> (Node.tMem n, Node.tDsk n, Node.tCpu n,

                                   Node.fMem n, Node.fDsk n)) nodes

         in conjoin [ Container.size gl ==? ngroups

                    , Container.size nl ==? totnodes

                    , Container.size il ==? 0

                    , length tags ==? 0

                    , ipol ==? Types.defIPolicy

                    , nidx ==? [1..totnodes]

                    , mdc_in ==? mdc_out

                    , map Group.iPolicy (Container.elems gl) ==?

                          replicate ngroups Types.defIPolicy

                    ]

testSuite "HTools/Backend/Simu"

            [ 'prop_Load

            ]