add adding appium-prefix

[KazuCocoa]

ref: #31 (comment)

TODO

• check compatibility for previous appium server
• add a unit test
• refactor include fixing rubocop
• pass functional tests

Ruby

pry(#<Appium::Core::Base::Bridge>)> add_prefix(desired_capabilities)
=> #<Selenium::WebDriver::Remote::W3C::Capabilities:0x007fe564253748
 @capabilities=
  {:proxy=>nil,
   :platformName=>:ios,
   "appium:automationName"=>"XCUITest",
   "appium:app"=>"/Users/kazuaki/GitHub/ruby_lib_core/test/functional/app/UICatalog.app",
   "appium:platformVersion"=>"10.3",
   "appium:deviceName"=>"iPhone Simulator",
   "appium:useNewWDA"=>true,
   "appium:some_capability"=>"some_capability"}>

Appium

[HTTP] --> POST /wd/hub/session {"desiredCapabilities":{"platformName":"ios","automationName":"XCUITest","app":"/Users/kazuaki/GitHub/ruby_lib_core/test/functional/app/UICatalog.app","platformVersion":"10.3","deviceName":"iPhone Simulator","useNewWDA":true,"someCapability":"some_capability"},"capabilities":{"firstMatch":[{"platformName":"ios","appium:automationName":"XCUITest","appium:app":"/Users/kazuaki/GitHub/ruby_lib_core/test/functional/app/UICatalog.app","appium:platformVersion":"10.3","appium:deviceName":"iPhone Simulator","appium:useNewWDA":true,"appium:some_capability":"some_capability"}]}}
[debug] [MJSONWP] Calling AppiumDriver.createSession() with args: [{"platformName":"ios","automationName":"XCUITest","app":"/Users/kazuaki/GitHub/ruby_lib_core/test/functional/app/UICatalog.app","platformVersion":"10.3","deviceName":"iPhone Simulator","useNewWDA":true,"someCapability":"some_capability"},null,{"firstMatch":[{"platformName":"ios","appium:automationName":"XCUITest","appium:app":"/Users/kazuaki/GitHub/ruby_lib_core/test/functional/app/UICatalog.app","appium:platformVersion":"10.3","appium:deviceName":"iPhone Simulator","appium:useNewWDA":true,"appium:some_capability":"some_capability"}]}]
[debug] [BaseDriver] Event 'newSessionRequested' logged at 1513691671112 (22:54:31 GMT+0900 (JST))
[BaseDriver] ["appium:automationName","appium:app","appium:platformVersion","appium:deviceName","appium:useNewWDA","appium:some_capability"] are not standard capabilities and should have an extension prefix
[Appium] Creating new XCUITestDriver (v2.61.0) session
[Appium] Capabilities:
[Appium]   platformName: ios
[Appium]   automationName: XCUITest
[Appium]   app: /Users/kazuaki/GitHub/ruby_lib_core/test/functional/app/UICatalog.app
[Appium]   platformVersion: 10.3
[Appium]   deviceName: iPhone Simulator
[Appium]   useNewWDA: true
[Appium]   some_capability: some_capability
[BaseDriver] The following capabilities were provided, but are not recognized by appium: some_capability.
[BaseDriver] Session created with session id: f59e4bfd-3624-41de-8c8e-dbb7dddd87c5
[debug] [XCUITest] Current user: 'kazuaki'
[debug] [XCUITest] Current version of libimobiledevice: stable 1.2.0 (bottled), HEAD
[debug] [XCUITest] Xcode version set to '9.2'
[debug] [XCUITest] iOS SDK Version set to '11.2'

[mykola-mokhnach]

shall we check if the capability already has the prefix?

[KazuCocoa]

Yes. The current implementation is so roughly. So, I'll implement some cases with adding test cases 👍

[KazuCocoa]

✅