unit testing - Access a value set up by `beforeAll` during tests -

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here's i've got:

spec :: spec spec =   manager <- runio newmanager    "foo" $     -- code uses manager    "bar" $     -- code usees manager

the docs runio suggest should using beforeall instead, since not need manager construct spec tree, need run each test, , in use case it's better them share same manager rather creating new 1 each test.

if not need result of io action construct spec tree, beforeall may more suitable use case.

beforeall :: io -> specwith -> spec

but can't figure out how access manager tests.

spec :: spec spec = beforeall newmanager go  go :: specwith manager go =   "foo" $     -- needs "manager" in scope   "bar" $     -- needs "manager" in scope

spec arguments passed blocks regular function arguments (look @ associated type of example type class, if want understand what's going on). self-contained example be:

import           test.hspec  main :: io () main = hspec spec  spec :: spec spec = beforeall (return "foo") $   describe "something" $     "some behavior" $ \xs ->       xs `shouldbe` "foo"      "some other behavior" $ \xs ->       xs `shouldbe` "foo"

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