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Parallel Android Tests

Appium provides a way for users to automate multiple Android sessions on a single machine on single server instance. All it involves is starting Appium server on any available port.

The important capabilities:

  • udid the device id
  • chromeDriverPort the chromedriver port (if using webviews or chrome)
  • systemPort If you are using appium-uiautomator2-driver, set a different system port for each android session, set with systemPort capability since sometimes there can be a port conflict if different ports aren't used, such as in this issue.

Parallel iOS Tests

With Xcode9 Appium supports parallel RealDevice and Simulator testing. Start your Appium Server on any available port.

The important capabilities:

RealDevice

  • udid the device id
  • wdaLocalPort unique wdaPort, as WDA defaults to 8100

Simulator

  • udid simulator UDID,this can be retrieved from xcrun simctl list.
  • deviceName Simulator Name
  • platformVersion Simulator OS version
  • wdaLocalPort unique wdaPort, as WDA defaults to 8100

Parallel Safari/Webview sessions are not working due to an Apple bug

Refer: https://github.com/appium/appium/issues/9209

Parallel Safari Real device

  • udid the device id
  • wdaLocalPort unique wdaPort, as WDA defaults to 8100
  • webkitDebugProxyPort unique webKitProxy, as IWDP defaults to 27753

Troubleshooting

When running on Jenkins, watch out for the ProcessTreeKiller when running multiple parallel test jobs on the same machine. If you are spawning simulators in one test job, Jenkins might kill all your simulators when the first test ends - causing errors in the remaining test jobs!

Use BUILD_ID=dontKillMe to prevent this from happening.

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