tvl-depot/users/grfn/xanthous/test/Xanthous/Util/GraphSpec.hs
Griffin Smith 6266c5d32f refactor(users/glittershark): Rename to grfn
Rename my //users directory and all places that refer to glittershark to
grfn, including nix references and documentation.

This may require some extra attention inside of gerrit's database after
it lands to allow me to actually push things.

Change-Id: I4728b7ec2c60024392c1c1fa6e0d4a59b3e266fa
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2933
Tested-by: BuildkiteCI
Reviewed-by: tazjin <mail@tazj.in>
Reviewed-by: lukegb <lukegb@tvl.fyi>
Reviewed-by: glittershark <grfn@gws.fyi>
2021-04-12 14:45:51 +00:00

39 lines
1.5 KiB
Haskell

module Xanthous.Util.GraphSpec (main, test) where
--------------------------------------------------------------------------------
import Test.Prelude
--------------------------------------------------------------------------------
import Xanthous.Util.Graph
import Data.Graph.Inductive.Basic
import Data.Graph.Inductive.Graph (labNodes, size, order)
import Data.Graph.Inductive.PatriciaTree
import Data.Graph.Inductive.Arbitrary
--------------------------------------------------------------------------------
main :: IO ()
main = defaultMain test
test :: TestTree
test = testGroup "Xanthous.Util.Graph"
[ testGroup "mstSubGraph"
[ testProperty "always produces a subgraph"
$ \(CG _ (graph :: Gr Int Int)) ->
let msg = mstSubGraph $ undir graph
in counterexample (show msg)
$ msg `isSubGraphOf` undir graph
, testProperty "returns a graph with the same nodes"
$ \(CG _ (graph :: Gr Int Int)) ->
let msg = mstSubGraph graph
in counterexample (show msg)
$ labNodes msg === labNodes graph
, testProperty "has nodes - 1 edges"
$ \(CG _ (graph :: Gr Int Int)) ->
order graph > 1 ==>
let msg = mstSubGraph graph
in counterexample (show msg)
$ size msg === order graph - 1
, testProperty "always produces a simple graph"
$ \(CG _ (graph :: Gr Int Int)) ->
let msg = mstSubGraph graph
in counterexample (show msg) $ isSimple msg
]
]