Add stateful reordering test for TwoDimensionalViewport #142375

Amir-P · 2024-01-27T14:05:26Z

Adds a test to validate state is preserved after reordering in TwoDimensionalViewport (reference: #141504 (review)).

Fixes 2D follow up: Persist state for reordered keyed children #130754

Pre-launch Checklist

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

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Piinks

Hey @Amir-P thanks for coming back for more! 🎉
Can you actually make this a new test? We want to preserve what the original test is validating in case of regressions.
More tests are never a bad thing! :)

Amir-P · 2024-02-25T18:44:41Z

Sorry for the delay. I've been busy. Could you please take a look again? @Piinks

Piinks

LGTM! Thanks for adding more testing! 😀

justinmc

LGTM with nits 👍 . Thanks!

justinmc · 2024-02-29T22:24:46Z

packages/flutter/test/widgets/two_dimensional_viewport_test.dart

+        (WidgetTester tester) async {
+      final TwoDimensionalChildBuilderDelegate delegate1 =
+          TwoDimensionalChildBuilderDelegate(
+              maxXIndex: 5,


The indentation for these parameters should be 2 instead of 4.

justinmc · 2024-02-29T22:26:31Z

packages/flutter/test/widgets/two_dimensional_viewport_test.dart

+                    const ChildVicinity(xIndex: 1, yIndex: 2)) {
+                  key = const ValueKey<int>(2);
+                }
+                return Checkbox(key: key, value: false, onChanged: (_) {});


See the styleguide about the anonymous parameter: https://github.com/flutter/flutter/wiki/Style-guide-for-Flutter-repo#avoid-anonymous-parameter-names

justinmc · 2024-02-29T22:26:45Z

packages/flutter/test/widgets/two_dimensional_viewport_test.dart

+              });
+      final TwoDimensionalChildBuilderDelegate delegate2 =
+          TwoDimensionalChildBuilderDelegate(
+              maxXIndex: 5,


These parameters should also be outdented.

justinmc · 2024-02-29T22:27:52Z

packages/flutter/test/widgets/two_dimensional_viewport_test.dart

+      expect(tester.state(find.byKey(const ValueKey<int>(2))),
+          stateBeforeReordering);


Nit: For these expects, I would put each parameter on its own line.

expect( tester.state(find.byKey(const ValueKey<int>(2))), stateBeforeReordering, );

…ter/flutter#142375)

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(flutter/flutter#144359) 2024-02-29 36861262+QuncCccccc@users.noreply.github.com Remove deprecated `backgroundColor` from `ThemeData` (flutter/flutter#144079) 2024-02-29 amirpanahandeh@yahoo.com Add stateful reordering test for TwoDimensionalViewport (flutter/flutter#142375) 2024-02-29 jacksongardner@google.com Always use local CanvasKit/Skwasm in benchmarks for better hermeticity. (flutter/flutter#144423) 2024-02-29 engine-flutter-autoroll@skia.org Roll Flutter Engine from bb6c6a01000f to 7e8fefe4a084 (2 revisions) (flutter/flutter#144419) 2024-02-29 chingjun@google.com Fix a crash in remote device daemon. 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…ter/flutter#142375)

github-actions bot added framework flutter/packages/flutter repository. See also f: labels. f: scrolling Viewports, list views, slivers, etc. labels Jan 27, 2024

goderbauer requested a review from Piinks January 30, 2024 23:10

Piinks reviewed Feb 1, 2024

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Amir-P added 2 commits February 24, 2024 23:58

Add stateful reordering test for TwoDimensionalViewport

d2c3aa9

Restore previous test

cbfab42

Amir-P force-pushed the add_stateful_reordering_test branch from 01eba62 to cbfab42 Compare February 24, 2024 20:28

Amir-P requested a review from Piinks February 25, 2024 18:44

Piinks approved these changes Feb 29, 2024

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gspencergoog approved these changes Feb 29, 2024

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auto-submit bot merged commit 6068891 into flutter:master Feb 29, 2024

Amir-P deleted the add_stateful_reordering_test branch March 1, 2024 05:58

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6068891 Add stateful reordering test for TwoDimensionalViewport (flut…

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…ter/flutter#142375)

engine-flutter-autoroll added a commit to engine-flutter-autoroll/packages that referenced this pull request May 14, 2024

6068891 Add stateful reordering test for TwoDimensionalViewport (flut…

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…ter/flutter#142375)

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		expect(tester.state(find.byKey(const ValueKey<int>(2))),
		stateBeforeReordering);

Add stateful reordering test for TwoDimensionalViewport #142375

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Amir-P commented Jan 27, 2024

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