scroll_up/scroll_down should call touchactions/w3c actions instead of mobile command to make it work for both Android and iOS

[shukrani1012]

Hi,
How to scroll to particular element.Tried swipe_down not working
Thanks

[KazuCocoa]

Where the swipe_down method?
I could not find it in capybara, too.
https://github.com/teamcapybara/capybara/search?q=swipe_down&type=Code

You can implement the action using below 2 ways.

1. Use W3C spec action api via Appium client
   • https://github.com/appium/ruby_lib/blob/8b42a9726eae67f52d79820e27ff3a0169d7a0f5/docs/w3c.md
     • more apis (links to webdriver) https://www.rubydoc.info/github/appium/ruby_lib_core/Appium/Core/Base/Bridge/W3C#action-instance_method
2. Use TouchAction API
   • Gesture cannot be processed correctly #35

[KazuCocoa]

you can ask questions in https://discuss.appium.io , too

[AlonaPF]

@KazuCocoa I have got similar error when running swipe method on Android emulator (Touch Action class)

While debugging i also figured that 'require 'appium_lib' (where the swipe method is in) returns false

I use the following as current_driver
0> Capybara.current_driver => :appium

Also i use the following:
appium_lib (10.3.1)
appium_lib_core (3.2.0)

For iOS - to swipe down i used
Capybara.current_session.driver.browser.execute_script('mobile: scroll', direction: 'down')
It worked, however does not work for Android

[KazuCocoa]

What about Appium::TouchAction.new(Capybara.current_driver.current_session)?
I read the source a bit, and the Capybara.current_driver returns the symbol of driver name managed in the capybara instance.

[AlonaPF]

@KazuCocoa i tried - it returns

0> Capybara.current_driver.current_session
=> undefined method `current_session' for :appium:Symbol

If i try Appium::TouchAction.new(Capybara.current_session) then it returns
0> Capybara.current_session => #<Capybara::Session>

And in method:

`0> Appium::TouchAction.new(Capybara.current_session).swipe(start_x: 725, start_y: 1555, end_x: 688, end_y: 236, duration: 600).perform
=> undefined method `touch_actions' for #<Capybara::Session>`

[KazuCocoa]

Maybe, browser method?
It looks returning driver instance.

appium_capybara/lib/appium_capybara/driver/appium/driver.rb

Line 20 in 6cb227e

def browser

[AlonaPF]

The problem is - appium_capybara does not contain swipe method in lib
Only scroll_up or scroll_down but they are not working on Android with the error:
0> Capybara.current_session.driver.browser.execute_script('mobile: swipe', direction: 'down') => Unknown mobile command "swipe". Only shell,startLogsBroadcast,stopLogsBroadcast,changePermissions,getPermissions,performEditorAction commands are supported.

[KazuCocoa]

ah, I understand.

appium_capybara/lib/appium_capybara/driver/appium/driver.rb

Lines 71 to 79 in d684bc1

	# new
	def scroll_up
	browser.execute_script('mobile: scroll', direction: 'up')
	end
	# new
	def scroll_down
	browser.execute_script('mobile: scroll', direction: 'down')
	end

Thanks.

That is mobile-command, we call, http://appium.io/docs/en/commands/mobile-command/
It can only work xcuitest and espresso driver.

I guess this issue's goal is updating the logic to w3c actions instead of mobile command to work it for both platforms.

[AlonaPF]

@KazuCocoa , do you have any idea about workaround for Android because we are not able to use any appium methods for now due to my comment above.
Thanks in advance

[KazuCocoa]

What about W3C actions?
I'm not familiar with Capybara, but if it can call selenium w3c actions, you probably can call it as same.
In general, @driver.action returns the basic action instance. The @driver is Selenium/Appium driver instance. Perhaps, it is browser in Capybara...

Below is an example to scroll which is used in test code in ruby_lib_core.

def w3c_scroll(driver)
  window = driver.window_rect

  action_builder = driver.action
  input = action_builder.pointer_inputs[0]
  action_builder
    .move_to_location(window.width / 2, window.width * 8 / 10)
    .pointer_down(:left)
    .pause(input, 1)
    .move_to_location(window.width / 2, window.width / 10)
    .pause(input, 1)
    .release
    .perform
end

https://github.com/appium/ruby_lib_core/blob/fd2cbde5466a144ce8dccfc6cf330b969bcc8fd3/test/functional/common_w3c_actions.rb#L16
http://appium.io/docs/en/commands/interactions/actions/

[prashanth-sams]

@KazuCocoa fixed in a pull request for this; maybe it is helpful
#50

[KazuCocoa]

released a new ver which has #50
It wraps TouchAction. thanks, @prashanth-sams !