leak-tracker: Support pure Dart package

[Solido]

Hi,

leak-tracker is an important tool in the dart world as the language is moving from being mainly front to also model rich world logic.

I'm working on a large package that would greatly benefits from memory insights while dealing with deep data structures and operations.

Thanks!

[polina-c]

Thanks for filing it! How about design discussion? I sent you message in Twitter to schedule.

[polina-c]

Relevant issue: flutter/flutter#161132

[polina-c]

Question: can you add dev dependency on flutter_test and use 'testWidgets' instead of 'test' to get leak tracking for your tests?
If this works out, we just need to document this.

[Solido]

It should be possible but it require to reconfigure the project from pure dart to flutter as we also need to import the flutter sdk.

[polina-c]

Not the entire project, but tests only. And another option is to have separate flutter project with just tests.
But, yes, ideally we want to update the pure dart method 'test' to support leak tracking.
First step would be to create one page design doc (template, example) and review it with team.

[Solido]

Currently I'm using a monorepo with all logics and tests relying on dart then another flutter project build on the logic. To use flutter test on logic would mean to import Flutter sdk which is not an option for later build purpose.

Flutter projects would not cover the same testing surface thus a case to check for memory leaks first on a pure dart project and then later on widgets.

[polina-c]

Currently I'm using a monorepo with all logics and tests relying on dart then another flutter project build on the logic. To use flutter test on logic would mean to import Flutter sdk which is not an option for later build purpose.

Flutter projects would not cover the same testing surface thus a case to check for memory leaks first on a pure dart project and then later on widgets.

Makes sense. Then next step is a one-page design doc to enable leak tracking in dart test.