Espresso is an open-source library for creating user interface tests. Android Studio lets you record a test as a Java class, and you can then edit the test class to fine-tune your test.
- [Instructor] Android Studio is integrated with Espresso,…an open source testing tool,…that allow you to create user interface tests.…You can record these tests from within Android Studio,…and then play them back,…to make sure you haven't broken anything…in the user interface when you make changes.…When you use Espresso,…I strongly recommend using a physical device,…not a virtual device running on the emulator.…There are certain tests that will fail on the emulator,…that work fine on the physical device.…
And to demonstrate this,…I'm using a virtual device emulating the Pixel,…and a physical device, a Nexus 5X,…that I'm projecting to the screen.…I'm actually going to record the test…with the virtual device,…and then play it back on both.…In Android Studio, I'll go to the menu and choose Run,…Record Espresso Test.…And I'll choose my virtual device,…which I can identify by the API 25.…
I'll move the Espresso recording dialog over to the left,…and then I'll bring the virtual device onto the screen.…Now I'll start executing certain actions.…
Skill Level Intermediate
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