Summary

This tests contains an app with a main page and sub pages. The main page contains a list of buttons; each button leads to a designated sub page when tapped on. Each sub page should displays some simple UIs to screenshot tested.

The flutter driver test runs the app and opens each page to take a screenshot. Then it compares the screenshots with golden files stored on Flutter Gold.

Note that new binaries can't be checked in the Flutter repo, so use Flutter Gold instead.

Reconstruction

We are currently in the process of moving this test to use golden API. The configuration guide below might need to be updated after that is done.

Add a new page to test

1. Create a new class which extends Page and implement the UI to be tested in the build method.
2. The new class should set a static title and key
3. Add an instance of the new class to the _allPages list in the main.dart
4. Create a new test case similar to "'A page with an image screenshot" in test_driver/main_test.dart to run the screenshot test.
5. Create directories for the test: test_driver/goldens/<some_test_page_name> should be created before running the test based on the target platform the test is designed to run.

An example of a Page subclass can be found in lib/image_page.dart

Environments

• Device Lab which runs the app on iPhone 6.
• LUCI which runs the app on a Fuchsia NUC device.