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The iOS exec wrapper uses ios-deploy to set up a device, install the wrapped app, and start a lldb session to run it. ios-deploy is not built to be scripted, as can be seen from the brittle way it is driven by the Go wrapper. There are many timeouts and comments such as " // lldb tries to be clever with terminals. // So we wrap it in script(1) and be clever // right back at it. " This CL replaces the use of ios-deploy with a lldb driver script in Python. lldb is designed to be scripted, so apart from getting rid of the ios-deploy dependency, we gain: - No timouts and scripting ios-deploy through stdin and parsing stdout for responses. - Accurate exit codes. - Prompt exits when the wrapped binary fails for some reason. Before, the go test timeout would kick in to fail the test. - Support for environment variables. - No noise in the test output. Only the test binary output is output from the wrapper. We have to do more work with the lldb driver: mounting the developer image on the device, running idevicedebugserverproxy and installing the app. Even so, the CL removes almost as many lines as it adds. Furthermore, having the steps split up helps to tell setup errors from runtime errors. Change-Id: I48cccc32f475d17987283b2c93aacc3da18fe339 Reviewed-on: https://go-review.googlesource.com/107337 TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> |
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