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android / platform / external / mobly-snippet-lib / refs/heads/android14-dev
commita7badbfa0cb93fdf28aaed1cf451a3cd7438bb60[log] [tgz]
authorNate Jiang <[email protected]>Tue May 30 17:41:38 2023 -0700
committerNate Jiang <[email protected]>Tue May 30 17:41:38 2023 -0700
treeb9ba7847f42e87d5f75664f149ab3713c0e89267
parent99ab063097a703ea686df0bcf5446540743ba07d [diff]
mobly-snippet-lib: Allow snippet install on R devices

Bug: 284416663
Test: atest GtsWifiDirectTestCases on R devices
Change-Id: Ia7df616d0aff82e68fd185b9691959a7832c844b
1 file changed
tree: b9ba7847f42e87d5f75664f149ab3713c0e89267
  1. examples/
  2. gradle/
  3. third_party/
  4. .gitignore
  5. Android.bp
  6. build.gradle
  7. CHANGELOG
  8. CONTRIBUTING
  9. gradle.properties
  10. gradlew
  11. gradlew.bat
  12. LICENSE
  13. METADATA
  14. MODULE_LICENSE_APACHE2
  15. OWNERS
  16. README.md
  17. settings.gradle
README.md

Getting Started with Snippets for Mobly

Mobly Snippet Lib is a library for triggering device-side code from host-side Mobly tests. This tutorial teaches you how to use the snippet lib to trigger custom device-side actions.

Note: Mobly and the snippet lib are not official Google products.

Prerequisites

  • These examples and tutorials assume basic familiarity with the Mobly framework, so please follow the Mobly tutorial before doing this one.
  • You should know how to create an Android app and build it with gradle. If not, follow the Android app tutorial.

Overview

The Mobly Snippet Lib allows you to write Java methods that run on Android devices, and trigger the methods from inside a Mobly test case. The Java methods invoked this way are called snippets.

The snippet code can either be written in its own standalone apk, or as a product flavor of an existing apk. This allows you to write snippets that instrument or automate another app.

Under The Hood

A snippet is launched by an am instrument call. Snippets use a custom InstrumentationTestRunner derived from AndroidJUnitRunner. This allows for snippets that interact with a main app‘s classes, such as Espresso snippets, and allows you to get either the test app’s or the main app's context from InstrumentationRegistry.

Once started, the special runner starts a web server which listens for requests to trigger snippets. The server's handler locates the corresponding methods by reflection, runs them, and returns results over the TCP socket. All common built-in variable types are supported as arguments.

Usage

The examples/ folder contains examples of how to use the mobly snippet lib along with detailed tutorials.

  • ex1_standalone_app: Basic example of a snippet which is compiled into its own standalone apk.
  • ex2_espresso: Example of a snippet which instruments a primary app to drive its UI using Espresso.
  • ex3_async_event: Example of how to use the @AsyncRpc annotation to handle asynchronous callbacks.
  • ex4_uiautomator: Example of how to create snippets that automate the UI actions using UIAutomator. Unlike Espresso UIAutomator works even without access to app source code.
  • ex5_schedule_rpc: Example of how to use the ‘scheduleRpc’ RPC to execute another RPC at a later time, potentially after device disconnection.
  • ex6_complex_type_conversion: Example of how to pass a non-primitive type to the Rpc methods and return non-primitive type from Rpc methods by supplying a type converter.