Synnefo » snf-ganeti

module Ganeti.HTools.QC

    where

import Test.QuickCheck

import Data.Maybe

import qualified Ganeti.HTools.CLI as CLI

import qualified Ganeti.HTools.Cluster as Cluster

import qualified Ganeti.HTools.Container as Container

import qualified Ganeti.HTools.IAlloc as IAlloc

import qualified Ganeti.HTools.Instance as Instance

import qualified Ganeti.HTools.Loader as Loader

import qualified Ganeti.HTools.Node as Node

import qualified Ganeti.HTools.PeerMap as PeerMap

import qualified Ganeti.HTools.Rapi as Rapi

import qualified Ganeti.HTools.Text as Text

import qualified Ganeti.HTools.Types as Types

import qualified Ganeti.HTools.Utils as Utils

-- copied from the introduction to quickcheck

instance Arbitrary Char where

    arbitrary = choose ('\32', '\128')

-- let's generate a random instance

instance Arbitrary Instance.Instance where

    arbitrary = do

      name <- arbitrary

      mem <- choose(0, 100)

      dsk <- choose(0, 100)

      run_st <- arbitrary

      pn <- arbitrary

      sn <- arbitrary

      return $ Instance.create name mem dsk run_st pn sn

-- and a random node

instance Arbitrary Node.Node where

    arbitrary = do

      name <- arbitrary

      mem_t <- arbitrary

      mem_f <- choose (0, mem_t)

      mem_n <- choose (0, mem_t - mem_f)

      dsk_t <- arbitrary

      dsk_f <- choose (0, dsk_t)

      offl <- arbitrary

      let n = Node.create name (fromIntegral mem_t) mem_n mem_f

              (fromIntegral dsk_t) dsk_f offl

          n' = Node.buildPeers n Container.empty

      return n'

-- | Make sure add is idempotent

prop_PeerMap_addIdempotent pmap key elem =

    fn puniq == fn (fn puniq)

    where _types = (pmap::PeerMap.PeerMap,

                    key::PeerMap.Key, elem::PeerMap.Elem)

          fn = PeerMap.add key elem

          puniq = PeerMap.accumArray const pmap

-- | Make sure remove is idempotent

prop_PeerMap_removeIdempotent pmap key =

    fn puniq == fn (fn puniq)

    where _types = (pmap::PeerMap.PeerMap, key::PeerMap.Key)

          fn = PeerMap.remove key

          puniq = PeerMap.accumArray const pmap

-- | Make sure a missing item returns 0

prop_PeerMap_findMissing pmap key =

    PeerMap.find key (PeerMap.remove key puniq) == 0

    where _types = (pmap::PeerMap.PeerMap, key::PeerMap.Key)

          puniq = PeerMap.accumArray const pmap

-- | Make sure an added item is found

prop_PeerMap_addFind pmap key elem =

    PeerMap.find key (PeerMap.add key elem puniq) == elem

    where _types = (pmap::PeerMap.PeerMap,

                    key::PeerMap.Key, elem::PeerMap.Elem)

          puniq = PeerMap.accumArray const pmap

-- | Manual check that maxElem returns the maximum indeed, or 0 for null

prop_PeerMap_maxElem pmap =

    PeerMap.maxElem puniq == if null puniq then 0

                             else (maximum . snd . unzip) puniq

    where _types = pmap::PeerMap.PeerMap

          puniq = PeerMap.accumArray const pmap

-- Container tests

prop_Container_addTwo cdata i1 i2 =

    fn i1 i2 cont == fn i2 i1 cont &&

       fn i1 i2 cont == fn i1 i2 (fn i1 i2 cont)

    where _types = (cdata::[Int],

                    i1::Int, i2::Int)

          cont = foldl (\c x -> Container.add x x c) Container.empty cdata

          fn x1 x2 = Container.addTwo x1 x1 x2 x2

-- Simple instance tests, we only have setter/getters

prop_Instance_setIdx inst idx =

    Instance.idx (Instance.setIdx inst idx) == idx

    where _types = (inst::Instance.Instance, idx::Types.Idx)

prop_Instance_setName inst name =

    Instance.name (Instance.setName inst name) == name

    where _types = (inst::Instance.Instance, name::String)

prop_Instance_setPri inst pdx =

    Instance.pnode (Instance.setPri inst pdx) == pdx

    where _types = (inst::Instance.Instance, pdx::Types.Ndx)

prop_Instance_setSec inst sdx =

    Instance.snode (Instance.setSec inst sdx) == sdx

    where _types = (inst::Instance.Instance, sdx::Types.Ndx)

prop_Instance_setBoth inst pdx sdx =

    Instance.pnode si == pdx && Instance.snode si == sdx

    where _types = (inst::Instance.Instance, pdx::Types.Ndx, sdx::Types.Ndx)

          si = Instance.setBoth inst pdx sdx

-- | Check that an instance add with too high memory or disk will be rejected

prop_Node_addPri node inst = (Instance.mem inst >= Node.f_mem node ||

                              Instance.dsk inst >= Node.f_dsk node) &&

                             (not $ Node.failN1 node)

                             ==>

                             isNothing(Node.addPri node inst)

    where _types = (node::Node.Node, inst::Instance.Instance)

-- | Check that an instance add with too high memory or disk will be rejected

prop_Node_addSec node inst pdx =

    (Instance.mem inst >= (Node.f_mem node - Node.r_mem node) ||

     Instance.dsk inst >= Node.f_dsk node) &&

    (not $ Node.failN1 node)

    ==> isNothing(Node.addSec node inst pdx)

        where _types = (node::Node.Node, inst::Instance.Instance, pdx::Int)