Android UI test Fingerprint with Espresso

Question

I have an Android fingerprint implementation working and I was looking to add UI tests with Espresso. One problem I can't find a solution to is how to emulate the scanning of a finger. There is an adb command adb -e emu finger touch which should work on emulators.

Any idea on how to integrate something like that with Espresso?

I'm looking for a similar solution, have you found something? — moxi, May 21 '16 at 02:08
Nope, we ended up creating a mocked version of our fingerprint implementation allowing us to test the flow — QuirijnGB, Oct 09 '16 at 21:13

jamesh · Answer 1 · 2018-10-31T19:18:28.383

1

From this question sending to an emulator is possible:

Runtime.getRuntime().exec("adb -e emu finger touch 1")

I expect, though can't show any working, that faking a fingerprint on a real device would require some special kind of security magic.

Edit: this doesn't work from within espresso tests.

edited Oct 31 '18 at 19:18

answered Oct 25 '18 at 15:52

jamesh

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Android UI test Fingerprint with Espresso

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