Write a UiAutomator2 to Espresso migration guide

[rajdeepv]

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1. If a client has previously set noSign capability to true, instrumentation doesn't work. We need to probably fail by telling the client to remove the noSign capability
2. Currently, If we need to find an element using resource Id, we have to provide a fully qualified identifier like "com.myapp.example:id/tooltip_itemDismiss". In Uiautomator2 if the package name is not specified, it is assumed to be from app under test as here

These are not blocking issues and have ways around. However, they will not allow smooth migration.

[dpgraham]

Thanks for your help with everything @rajdeepv!

[rajdeepv]

Thanks @dpgraham and @mykola-mokhnach for being so prompt and putting in so much time and effort. I look forward to success of espresso driver.

[dpgraham]

I'm going to work on a guide to migrate from UIA2 to Espresso soon.

[ritesh2689]

Hi @dpgraham , By any chance any update about the migration guide you mentioned above.