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Espresso

Espresso Testing Overview

  • Espresso is a suite of testing-related code for Android used to reproduce UI inputs to check for expected behavior.

Functionality

  • Espresso Test Recorder allows for a set pattern of testing procedures done performed entirely through UI elements (rather than code) and later reproduceable.

Things To Keep in Mind

  • Turn off animations in the tested app before recording (may lead to "unexpected results")

  • Espresso waits for certain criteria in between reproducing onView() invocations:

    • No ongoing AsyncTask executions

    • Expected idle resources are available

    • Message queue does not have pending content

  • Espresso assertions come in a few primary categories for view element testing:

    • text is to check against expected text in an element

    • exists and does not exist to check for an element appearing in the visible layout

  • Espresso supports cloud-based testing on a variety of devices using Firebase (with some usage limitations).