mirror of
https://github.com/aelve/guide.git
synced 2024-12-29 00:24:01 +03:00
455 lines
13 KiB
Haskell
455 lines
13 KiB
Haskell
{-# LANGUAGE FlexibleInstances #-}
|
|
{-# LANGUAGE IncoherentInstances #-}
|
|
{-# LANGUAGE GADTs #-}
|
|
{-# LANGUAGE StandaloneDeriving #-}
|
|
{-# LANGUAGE OverloadedStrings #-}
|
|
{-# LANGUAGE NoImplicitPrelude #-}
|
|
|
|
|
|
module Selenium
|
|
(
|
|
module Test.Hspec.WebDriver,
|
|
module Test.WebDriver.Commands.Wait,
|
|
wd,
|
|
wait_delay,
|
|
|
|
-- * Selecting
|
|
CanSelect(..),
|
|
ComplexSelector(..),
|
|
select,
|
|
selectSome,
|
|
|
|
-- * Webdriver
|
|
click,
|
|
cssProp,
|
|
attr,
|
|
enterInput,
|
|
setInput,
|
|
fontSize,
|
|
highlight,
|
|
selectDropdown,
|
|
getBackAfterwards,
|
|
getLink,
|
|
getText,
|
|
getValue,
|
|
sendKeys,
|
|
clearInput,
|
|
|
|
-- * Expectations
|
|
changesURL,
|
|
doesNotChangeURL,
|
|
checkPresent,
|
|
checkPresentSome,
|
|
checkNotPresent,
|
|
shouldHaveAttr,
|
|
shouldHaveProp,
|
|
shouldLinkTo,
|
|
shouldSatisfy,
|
|
shouldHaveText,
|
|
shouldNotBe,
|
|
shouldBeHidden,
|
|
shouldBeInRange,
|
|
shouldBeSelected,
|
|
shouldBeDisplayed,
|
|
expectationFailure,
|
|
)
|
|
where
|
|
|
|
|
|
import BasePrelude hiding (catch, bracket)
|
|
-- Lenses
|
|
import Lens.Micro.Platform
|
|
-- Monads
|
|
import Control.Monad.IO.Class
|
|
import Control.Monad.Loops
|
|
-- Containers
|
|
import qualified Data.Set as Set
|
|
-- Text
|
|
import Data.Text.All (Text)
|
|
import qualified Data.Text.All as T
|
|
-- Testing
|
|
import Test.Hspec.WebDriver hiding
|
|
(getText, shouldHaveAttr, shouldHaveText, click, cssProp, attr,
|
|
sendKeys, clearInput)
|
|
import qualified Test.Hspec.WebDriver as WD
|
|
import Test.WebDriver.Commands.Wait
|
|
import Test.WebDriver.Exceptions
|
|
import qualified Test.WebDriver.Common.Keys as Key
|
|
import qualified Test.Hspec.Expectations as Hspec
|
|
-- Exceptions
|
|
import Control.Monad.Catch
|
|
|
|
import Guide.Utils (ordNub)
|
|
|
|
|
|
getLink :: CanSelect s => s -> WD String
|
|
getLink s = do
|
|
e <- select s
|
|
-- Select all links including the root element itself
|
|
linkElems <- selectAll ((e :& "a") :| (e :// "a"))
|
|
links <- nub . catMaybes <$> mapM (flip attr "href") linkElems
|
|
case links of
|
|
[x] -> return (T.toString x)
|
|
[] -> expectationFailure $
|
|
printf "expected %s to contain a link" (show s)
|
|
_ -> expectationFailure $
|
|
printf "expected %s to contain only one link" (show s)
|
|
|
|
getText :: CanSelect s => s -> WD Text
|
|
getText s = do
|
|
-- TODO: Note [staleness]
|
|
e <- select s
|
|
WD.getText e
|
|
|
|
getValue :: CanSelect s => s -> WD Text
|
|
getValue x = fromMaybe "" <$> attr x "value"
|
|
|
|
clearInput :: CanSelect s => s -> WD ()
|
|
clearInput s = do
|
|
-- TODO: Note [staleness]
|
|
input <- select s
|
|
WD.clearInput input
|
|
|
|
sendKeys :: CanSelect s => Text -> s -> WD ()
|
|
sendKeys t s = do
|
|
-- TODO: Note [staleness]
|
|
input <- select s
|
|
WD.sendKeys t input
|
|
|
|
enterInput :: CanSelect s => Text -> s -> WD ()
|
|
enterInput x s = do
|
|
input <- select s
|
|
clearInput input
|
|
sendKeys (x <> Key.enter) input
|
|
checkNotPresent input
|
|
|
|
setInput :: CanSelect s => Text -> s -> WD ()
|
|
setInput x s = do
|
|
input <- select s
|
|
clearInput input
|
|
sendKeys x input
|
|
|
|
isAlive :: Element -> WD Bool
|
|
isAlive e = (isEnabled e >> return True) `onDead` return False
|
|
|
|
onDead :: WD a -> WD a -> WD a
|
|
onDead x h = do
|
|
let handler ex@(FailedCommand t _)
|
|
| t `elem` [NoSuchElement, StaleElementReference] = h
|
|
| otherwise = throw ex
|
|
x `catch` handler
|
|
|
|
tryDead :: WD a -> WD (Maybe a)
|
|
tryDead x = (Just <$> x) `onDead` return Nothing
|
|
|
|
-- TODO: can fail if the element becomes stale between 'select' and 'click'
|
|
click :: CanSelect a => a -> WD ()
|
|
click s = WD.click =<< select s
|
|
|
|
-- TODO: can fail if the element becomes stale between 'select' and
|
|
-- 'shouldHaveAttr'
|
|
shouldHaveAttr :: CanSelect a => a -> (Text, Text) -> WD ()
|
|
s `shouldHaveAttr` (a, txt) = do
|
|
e <- select s
|
|
e `WD.shouldHaveAttr` (a, txt)
|
|
|
|
-- TODO: can fail if the element becomes stale between 'select' and
|
|
-- 'shouldHaveText'
|
|
shouldHaveText :: CanSelect a => a -> Text -> WD ()
|
|
s `shouldHaveText` txt = do
|
|
e <- select s
|
|
e `WD.shouldHaveText` txt
|
|
|
|
shouldLinkTo :: CanSelect a => a -> String -> WD ()
|
|
s `shouldLinkTo` url2 = do
|
|
url <- getLink s
|
|
url `shouldBe` url2
|
|
|
|
highlight :: Element -> WD ()
|
|
highlight e = do
|
|
html <- executeJS [JSArg e]
|
|
"arguments[0].style.border='thick solid #FF0000';\
|
|
\return arguments[0].outerHTML;"
|
|
liftIO $ putStrLn html
|
|
|
|
selectDropdown
|
|
:: Element -- ^ Dropdown
|
|
-> Element -- ^ Option to select
|
|
-> WD ()
|
|
selectDropdown sel opt = void
|
|
(executeJS [JSArg sel, JSArg opt]
|
|
"sel=arguments[0];opt=arguments[1];\
|
|
\for (var i=0;i<sel.options.length;i++) {\
|
|
\ if (sel.options[i]==opt) {\
|
|
\ sel.selectedIndex=i;\
|
|
\ sel.onchange && sel.onchange();\
|
|
\ break; }}"
|
|
:: WD (Maybe ()))
|
|
|
|
getDescendants :: Element -> WD [Element]
|
|
getDescendants e = findElemsFrom e (ByXPath ".//*")
|
|
|
|
getChildren :: Element -> WD [Element]
|
|
getChildren e = findElemsFrom e (ByXPath "./*")
|
|
|
|
data ComplexSelector where
|
|
-- | Descendants (not including the element itself)
|
|
(://) :: (CanSelect a, CanSelect b) => a -> b -> ComplexSelector
|
|
-- | Children
|
|
(:/) :: (CanSelect a, CanSelect b) => a -> b -> ComplexSelector
|
|
-- | Parents
|
|
(:<//) :: (CanSelect a, CanSelect b) => a -> b -> ComplexSelector
|
|
-- | Direct parents
|
|
(:</) :: (CanSelect a, CanSelect b) => a -> b -> ComplexSelector
|
|
-- | And
|
|
(:&) :: (CanSelect a, CanSelect b) => a -> b -> ComplexSelector
|
|
-- | Or
|
|
(:|) :: (CanSelect a, CanSelect b) => a -> b -> ComplexSelector
|
|
-- | Not
|
|
Not :: CanSelect a => a -> ComplexSelector
|
|
-- | Elements with specific text
|
|
HasText :: Text -> ComplexSelector
|
|
-- | Elements that contain specific text
|
|
ContainsText :: Text -> ComplexSelector
|
|
-- | Only pick the first N selected elements
|
|
Take :: CanSelect a => Int -> a -> ComplexSelector
|
|
-- | Only pick the Nth (starting from 0) selected element
|
|
Index :: CanSelect a => Int -> a -> ComplexSelector
|
|
-- | Displayed element
|
|
Displayed :: ComplexSelector
|
|
|
|
deriving instance Show ComplexSelector
|
|
|
|
defSelectAll :: CanSelect a => a -> WD [Element]
|
|
defSelectAll s = filterElems s =<< findElems (ByXPath "//")
|
|
|
|
defFilterElems :: CanSelect a => a -> [Element] -> WD [Element]
|
|
defFilterElems s es = do
|
|
ss <- Set.fromList <$> selectAll s
|
|
return (filter (`Set.member` ss) es)
|
|
|
|
defAnyElem :: CanSelect a => a -> [Element] -> WD Bool
|
|
defAnyElem s es = do
|
|
ss <- Set.fromList <$> selectAll s
|
|
return (any (`Set.member` ss) es)
|
|
|
|
{- NOTE [staleness]
|
|
~~~~~~~~~~~~~~~
|
|
|
|
We want to avoid “stale element” errors at all costs, instead preferring “element not found” and so on. This means that whenever we select an element with 'select' or 'selectAll' and then do something with it, we have to catch and handle possible staleness.
|
|
-}
|
|
|
|
class Show a => CanSelect a where
|
|
selectAll :: a -> WD [Element]
|
|
selectAll = defSelectAll
|
|
filterElems :: a -> [Element] -> WD [Element]
|
|
filterElems = defFilterElems
|
|
anyElem :: a -> [Element] -> WD Bool
|
|
anyElem = defAnyElem
|
|
instance CanSelect Element where
|
|
selectAll e = filterM isAlive [e]
|
|
filterElems s es = do
|
|
alive <- isAlive s
|
|
return $ if alive then filter (s ==) es else []
|
|
anyElem s es = do
|
|
alive <- isAlive s
|
|
return $ if alive then any (s ==) es else False
|
|
instance CanSelect Selector where
|
|
selectAll s = findElems s
|
|
instance (a ~ Text) => CanSelect a where
|
|
selectAll t = findElems (ByCSS t)
|
|
instance CanSelect ComplexSelector where
|
|
selectAll s = do
|
|
let getDescendants' e = getDescendants e `onDead` return []
|
|
getChildren' e = getChildren e `onDead` return []
|
|
case s of
|
|
(a :// b) -> do
|
|
as <- selectAll a
|
|
ordNub.concat <$> mapM (filterElems b <=< getDescendants') as
|
|
(a :/ b) -> do
|
|
as <- selectAll a
|
|
ordNub.concat <$> mapM (filterElems b <=< getChildren') as
|
|
(a :<// b) -> filterM (anyElem b <=< getDescendants') =<< selectAll a
|
|
(a :</ b) -> filterM (anyElem b <=< getChildren') =<< selectAll a
|
|
(a :& b) -> do
|
|
filterElems b =<< selectAll a
|
|
(a :| b) -> do
|
|
as <- Set.fromList <$> selectAll a
|
|
bs <- Set.fromList <$> selectAll b
|
|
return (Set.toList (as `Set.union` bs))
|
|
Take n a -> take n <$> selectAll a
|
|
Index n a -> toListOf (ix n) <$> selectAll a
|
|
--
|
|
Not a -> defSelectAll (Not a)
|
|
HasText t -> defSelectAll (HasText t)
|
|
ContainsText t -> defSelectAll (ContainsText t)
|
|
Displayed -> defSelectAll Displayed
|
|
filterElems s es = do
|
|
let andNotDead = fmap (== Just True) . tryDead
|
|
case s of
|
|
Not a -> (es \\) <$> filterElems a es
|
|
HasText t -> filterM (andNotDead . fmap (== t) . getText) es
|
|
ContainsText t -> filterM (andNotDead .
|
|
fmap (t `T.isInfixOf`) . getText) es
|
|
Displayed -> filterM (andNotDead . isDisplayed) es
|
|
_ -> defFilterElems s es
|
|
anyElem s es = do
|
|
let andNotDead = fmap (== Just True) . tryDead
|
|
case s of
|
|
Not a -> (== length es) . length <$> filterElems a es
|
|
HasText t -> anyM (andNotDead . fmap (== t) . getText) es
|
|
ContainsText t -> anyM (andNotDead .
|
|
fmap (t `T.isInfixOf`) . getText) es
|
|
Displayed -> anyM (andNotDead . isDisplayed) es
|
|
_ -> defAnyElem s es
|
|
|
|
{-
|
|
class ToSelector a where
|
|
toSelector :: a -> Selector
|
|
instance ToSelector Selector where
|
|
toSelector = id
|
|
instance ToSelector Text where
|
|
toSelector = ByCSS
|
|
-}
|
|
|
|
-- | Ensure that the element is the only element matching the selector.
|
|
select :: CanSelect a => a -> WD Element
|
|
select x = do
|
|
-- True = found more than one element
|
|
-- False = found no elements
|
|
v <- liftIO $ newIORef False
|
|
let findOne = do
|
|
es <- selectAll x
|
|
case es of
|
|
[e] -> return e
|
|
[] -> do liftIO $ writeIORef v False
|
|
unexpected "select: no elements"
|
|
_ -> do liftIO $ writeIORef v True
|
|
unexpected "select: more than one element"
|
|
let handler = do
|
|
moreThanOne <- liftIO $ readIORef v
|
|
if moreThanOne
|
|
then expectationFailure $
|
|
printf "%s isn't unique on the page" (show x)
|
|
else expectationFailure $
|
|
printf "%s wasn't found on the page" (show x)
|
|
waitUntil wait_delay findOne `onTimeout` handler
|
|
|
|
-- | Select one of the elements matching the selector.
|
|
selectSome :: CanSelect a => a -> WD Element
|
|
selectSome x = do
|
|
es <- selectAll x
|
|
when (null es) $ expectationFailure $
|
|
printf "%s wasn't found on the page" (show x)
|
|
return (head es)
|
|
|
|
-- | @font-size@ of an element, in pixels
|
|
fontSize :: CanSelect a => a -> WD Double
|
|
fontSize s = do
|
|
mbProp <- cssProp s "font-size"
|
|
case mbProp of
|
|
Nothing -> expectationFailure $
|
|
printf "expected %s to have font-size" (show s)
|
|
Just fs -> case reads (T.toString fs) of
|
|
[(d, "px")] -> return d
|
|
_ -> expectationFailure $
|
|
printf "couldn't parse font-size of %s: %s" (show s) (show fs)
|
|
|
|
cssProp :: CanSelect a => a -> Text -> WD (Maybe Text)
|
|
-- TODO: can fail (NOTE [staleness])
|
|
cssProp s p = do
|
|
e <- select s
|
|
WD.cssProp e p
|
|
|
|
attr :: CanSelect a => a -> Text -> WD (Maybe Text)
|
|
-- TODO: can fail (NOTE [staleness])
|
|
attr s p = do
|
|
e <- select s
|
|
WD.attr e p
|
|
|
|
changesURL :: WD a -> WD a
|
|
changesURL x = do
|
|
url <- getCurrentURL
|
|
a <- x
|
|
waitUntil wait_delay (expect =<< ((/= url) <$> getCurrentURL))
|
|
return a
|
|
|
|
doesNotChangeURL :: WD a -> WD a
|
|
doesNotChangeURL x = do
|
|
url <- getCurrentURL
|
|
a <- x
|
|
-- TODO: somehow check that the browser isn't even trying to change the URL
|
|
url2 <- getCurrentURL
|
|
url2 `shouldBe` url
|
|
return a
|
|
|
|
getBackAfterwards :: WD a -> WD a
|
|
getBackAfterwards x = do
|
|
url <- getCurrentURL
|
|
a <- x
|
|
openPage url
|
|
return a
|
|
|
|
wd :: String -> WD a -> SpecWith (WdTestSession ())
|
|
wd x act = it x (runWD (void act))
|
|
|
|
checkPresent :: CanSelect a => a -> WD ()
|
|
checkPresent x = void (select x)
|
|
|
|
checkPresentSome :: CanSelect a => a -> WD ()
|
|
checkPresentSome x = void (selectSome x)
|
|
|
|
checkNotPresent :: CanSelect a => a -> WD ()
|
|
checkNotPresent x = waitUntil wait_delay $ do
|
|
es <- selectAll x
|
|
when (not (null es)) $ unexpected $
|
|
printf "expected %s not to be present on the page" (show x)
|
|
|
|
expectationFailure :: MonadIO m => String -> m a
|
|
expectationFailure s = do
|
|
liftIO (Hspec.expectationFailure s)
|
|
undefined
|
|
|
|
shouldSatisfy :: (Show a, MonadIO m) => a -> (String, a -> Bool) -> m ()
|
|
shouldSatisfy a (s, p) = unless (p a) $
|
|
expectationFailure (printf "expected %s to %s" (show a) s)
|
|
|
|
shouldBeInRange :: (Show a, Ord a, MonadIO m) => a -> (a, a) -> m ()
|
|
shouldBeInRange a (x, y) =
|
|
shouldSatisfy a ("be in range " ++ show (x,y), \n -> n >= x && n <= y)
|
|
|
|
shouldNotBe :: (Show a, Eq a, MonadIO m) => a -> a -> m ()
|
|
shouldNotBe a x =
|
|
shouldSatisfy a ("not be " ++ show x, const (a /= x))
|
|
|
|
shouldHaveProp :: CanSelect a => a -> (Text, Text) -> WD ()
|
|
s `shouldHaveProp` (a, txt) = do
|
|
t <- cssProp s a
|
|
unless (Just txt == t) $ expectationFailure $
|
|
printf "expected property %s of %s to be %s, got %s"
|
|
a (show s) (show txt) (show t)
|
|
|
|
shouldBeSelected :: CanSelect a => a -> WD ()
|
|
-- TODO: can fail (NOTE [staleness])
|
|
shouldBeSelected s = do
|
|
e <- select s
|
|
x <- isSelected e
|
|
s `shouldSatisfy` ("be checked/selected", const x)
|
|
|
|
shouldBeDisplayed :: CanSelect a => a -> WD ()
|
|
-- TODO: can fail (NOTE [staleness])
|
|
shouldBeDisplayed s = do
|
|
e <- select s
|
|
x <- isDisplayed e
|
|
s `shouldSatisfy` ("be displayed", const x)
|
|
|
|
shouldBeHidden :: CanSelect a => a -> WD ()
|
|
-- TODO: can fail (NOTE [staleness])
|
|
shouldBeHidden s = do
|
|
e <- select s
|
|
x <- isDisplayed e
|
|
s `shouldSatisfy` ("be hidden", const (not x))
|
|
|
|
wait_delay :: Double
|
|
wait_delay = 10
|