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* Add a `matchesGoldenFile()` async matcher that will match a finder's widget's rasterized image against a golden file. * Add support for pluggable image comparison backends * Add a default backend that does simplistic PNG byte comparison on locally stored golden files. * Add support for `flutter test --update-goldens`, which will treat the rasterized image bytes produced during the test as the new golden bytes and update the golden file accordingly Still TODO: * Add support for the `flutter_test_config.dart` test config hook * Utilize `flutter_test_config.dart` in `packages/flutter/test` to install a backend that retrieves golden files from a dedicated `flutter/goldens` repo https://github.com/flutter/flutter/issues/16859
This directory contains tools and resources that the Flutter team uses during development of the framework. The tools in this directory should not be necessary for developing Flutter applications, though of course they may be interesting if you are curious.