Web Driver Notes 2018

Presented by Brian Burg

• WebDriver is a test runner for web content in Safari
• [demo of WebDriver running test suites]
• WebDriver is pretty powerful/flexible
  • Create/find/test elements
  • Run JavaScript
  • Create/resize/close windows
• Architecture breakdown
  • Test/TestRunner
    • Python
    • Uses a library (e.g. selenium)
      • DOM interaction/api
    • Turns each call into REST API calls
  • Driver (e.g. SafariDriver, GTKDriver)
    • web server with REST API
    • receives calls from test/testrunner
    • must be able to tell browser what to do
    • API is standardized
• Test breakdown
  • Driver represents a session with Safari
    • able to interact with browser (e.g. bind elements by ID, execute scripts)
    • able to pass objects from the test into the test to be accessible via javascript
  • Able to be run across multiple machines due to REST api system
• Safari 12 / WebKit TOT implements W3C WebDriver standard
• Safari is fastest WebDriver implementation
• Many tests still don't pass (OpenSource/WebDriverTests/TestExpectations.json)
• WebDriver for WKWebView
  • Currently WebDriver only works in the browser, not within an app
  • Idea is to allow each app to opt-in WebDriver for all views within that app
• WebDriver for iOS
  • Currently WebDriver only works for mac Safari, not iOS Safari
  • Requesting a new session would allow an iOS/Simulator Safari driver
    • depends on the system (e.g. connected devices, simulators)
  • Some API wouldn't work on mobile, as they were developed for desktop
    • resizing the window
    • click vs touch
• RPC protocol is based on WebInspector protocol