flutter/packages/flutter_tools/test/widget_preview_scaffold.shard
auto-submit[bot] 4372bfbc6c
Reverts "Add workspace (#169451)" (#169468)
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Reverts: flutter/flutter#169451
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Initiated by: matanlurey
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Reason for reverting: Broke a number of post-submit tests
(ios_app_extension, packages_autoroller).
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Original PR Author: mosuem
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Reviewed By: {matanlurey}
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This change reverts the following previous change:
Reland after #169357.

Switch Flutter to use pub workspaces as a preparation to unpin selected
packages.

Assumptions:

1. No packages in this repository are published to pub.dev --> We can
use `any` dependencies in most local pubspecs, as the global constraint
defines the version. An exception are the packages used outside of this
repo with an `sdk` dependency, namely `flutter_localizations`,
`flutter_test`, and `flutter`.
2. The "universes" `{flutter_tools}` and `{flutter,
flutter_localizations, flutter_goldens}` can use different packages
versions, as they are not resolved together. --> We do not need to
upgrade them in sync, we can first do one "universe", then the other.

Based on these assumptions, we use
https://github.com/mosuem/pubspec_merger.dart to merge all packages in
the `flutter` universe into a top-level pub workspace.

The `flutter` and `flutter_tools` workspaces being separate also ensures
that changes to `flutter` will not inadvertently break `flutter_tools`,
with not-so-nice consequences for our users which would be unable to run
`flutter upgrade`.

There is a third "top-level" pubspec besides `./pubspec.yaml` and
`packages/flutter_tools/pubspec.yaml`, namely
`packages/flutter_tools/.../widget_preview_scaffold/pubspec.yaml`. This
is an artifact due to it living under `flutter_tools`, so it can't be
part of the `./pubspec.yaml` workspace. Moving it would be a larger
change, and out of the scope of this PR.

This required a rewrite of the update-packages tool, but the main
functionality stays the same, as well as the argument names, to ensure a
seamless transition.

## Pre-launch Checklist

- [x] I read the [Contributor Guide] and followed the process outlined
there for submitting PRs.
- [x] I read the [Tree Hygiene] wiki page, which explains my
responsibilities.
- [x] I read and followed the [Flutter Style Guide], including [Features
we expect every widget to implement].
- [x] I signed the [CLA].
- [x] I listed at least one issue that this PR fixes in the description
above.
- [x] I updated/added relevant documentation (doc comments with `///`).
- [x] I added new tests to check the change I am making, or this PR is
[test-exempt].
- [x] I followed the [breaking change policy] and added [Data Driven
Fixes] where supported.
- [x] All existing and new tests are passing.

If you need help, consider asking for advice on the #hackers-new channel
on [Discord].

<!-- Links -->
[Contributor Guide]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#overview
[Tree Hygiene]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md
[test-exempt]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#tests
[Flutter Style Guide]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Style-guide-for-Flutter-repo.md
[Features we expect every widget to implement]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Style-guide-for-Flutter-repo.md#features-we-expect-every-widget-to-implement
[CLA]: https://cla.developers.google.com/
[flutter/tests]: https://github.com/flutter/tests
[breaking change policy]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#handling-breaking-changes
[Discord]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Chat.md
[Data Driven Fixes]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Data-driven-Fixes.md

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Co-authored-by: auto-submit[bot] <flutter-engprod-team@google.com>
2025-05-26 14:07:27 +00:00
..
widget_preview_scaffold Reverts "Add workspace (#169451)" (#169468) 2025-05-26 14:07:27 +00:00
.gitignore
README.md
update_widget_preview_scaffold.dart [ Widget Preview ] Add support for "soft" restart of individual previews (#166846) 2025-04-10 16:20:11 +00:00

Widget Preview Scaffold Testing

This directory contains a hydrated instance of the widget_preview_scaffold project template that's used for generating the environment used by flutter widget-preview start to host Widget Previews, as well as utilities to detect if the hydrated instance is outdated when compared to the template files.

Updating the Hydrated Template

If any of the widget_preview_scaffold template files are updated, widget_preview_scaffold/test/template_change_detection_smoke_test.dart will fail to indicate that the hydrated scaffold needs to be regenerated. To do this, run dart test/widget_preview_scaffold.shard/update_widget_preview_scaffold.dart to regenerate the project.