CODEWITHSUNDEEP
haskellseleniumwebdrivermonads
panurg
panurg

Reputation: 339

How to use runSession from: Test.WebDriver in haskell selenium webdriver?

I'm new in Haskell (although I'm after reading LYAH). I have no idea what should I do to use selenium webdriver (webdriver link on hackage). I'm pretty sure that I should run one of these functions

runWD :: WDSession -> WD a -> IO aSource
runSession :: WDSession -> Capabilities -> WD a -> IO aSource
withSession :: WDSession -> WD a -> WD aSource

but i don't understand how to get this WD structure which is define as:

WD (StateT WDSession IO a)   
Instances:
Monad WD     
Functor WD   
Applicative WD   
MonadCatchIO WD  
MonadIO WD   
WebDriver WD     
SessionState WD  
MonadBase IO WD  
MonadBaseControl IO WD

I wonder also what is the purpose of this WD structure?

Code example or indication of what I should have read about Haskell to understand what is going on here will be very helpful for me.

Upvotes: 3

Views: 941

Answers (1)

arrowd
arrowd

Reputation: 34401

The reference page says that WD is

A monadic interface to the WebDriver server. This monad is a simple, strict layer over IO, threading session information between sequential commands

So you can do something like this:

foo = runWD defaultSession $ do
    liftIO $ putStrLn "Hello WD"
    somethingElse
    ...

Upvotes: 2

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