Skip to content

Mac_unopt FlutterViewControllerTest testViewWillTransitionToSize_DoesDelayEngineCallIfNonZeroDuration flakey fails #194252

New issue
New issue
Open
Open
Mac_unopt FlutterViewControllerTest testViewWillTransitionToSize_DoesDelayEngineCallIfNonZeroDuration flakey fails#194252
Labels
P2Important issues not at the top of the work lista: tests"flutter test", flutter_test, or one of our testsc: flakeTests that sometimes, but not always, incorrectly passengineflutter/engine related. See also e: labels.platform-iosiOS applications specificallyteam-iosOwned by iOS platform teamtriaged-iosTriaged by iOS platform team

Description

@vashworth
vashworth
opened on Oct 12, 2026

https://ci.chromium.org/ui/p/flutter/builders/prod/Mac%20mac_unopt/15153/overview

Test Case '-[FlutterViewControllerTest testViewWillTransitionToSize_DoesDelayEngineCallIfNonZeroDuration]' started.
 2026-10-12 12:02:15.434872-0700 IosUnitTests[21655:144587] Failed to find assets path for "NSBundle </Users/chrome-bot/Library/Developer/CoreSimulator/Devices/34B15736-796E-43B6-8D85-67230D24B1B1/data/Containers/Bundle/Application/E115CCB0-6018-4ADC-91E0-EC695E54C10F/IosUnitTests.app> (loaded)"
 2026-10-12 12:02:15.438906-0700 IosUnitTests[21655:144587] [IMPORTANT:flutter/shell/platform/darwin/graphics/FlutterDarwinContextMetalImpeller.mm(45)] Using the Impeller rendering backend (Metal).
 2026-10-12 12:02:15.472339-0700 IosUnitTests[21655:144587] [UIFocus] FlutterView implements focusItemsInRect: - caching for linear focus movement is limited as long as this view is on screen.
 /../../../flutter/shell/platform/darwin/ios/framework/Source/FlutterViewControllerTest.mm:1471: error: -[FlutterViewControllerTest testViewWillTransitionToSize_DoesDelayEngineCallIfNonZeroDuration] : OCPartialMockObject(FlutterEngine): expected method was not invoked: updateViewportMetrics:({length = 272, bytes = 0x00000000 0000f03f 00000000 00000000 ... 00000000 0000f0bf })
 Test Case '-[FlutterViewControllerTest testViewWillTransitionToSize_DoesDelayEngineCallIfNonZeroDuration]' failed (0.859 seconds).

Activity

  1. vashworth
    changed the title [-][macOS 26] Mac_unopt FlutterViewControllerTest testViewWillTransitionToSize_DoesDelayEngineCallIfNonZeroDuration flakey fails[/-] [+]Mac_unopt FlutterViewControllerTest testViewWillTransitionToSize_DoesDelayEngineCallIfNonZeroDuration flakey fails[/+] on Oct 12, 2026

  2. vashworth commented on Oct 12, 2026

    @vashworth
    vashworth
    on Oct 12, 2026
    ContributorAuthor

    This is not specific to macOS 26, also happens on macOS 15: https://ci.chromium.org/ui/p/flutter/builders/prod/Mac%20Production%20Engine%20Drone/1133027/infra

  3. vashworth
    added
    engineflutter/engine related. See also e: labels.
    team-iosOwned by iOS platform team
    a: tests"flutter test", flutter_test, or one of our tests
    c: flakeTests that sometimes, but not always, incorrectly pass
    P2Important issues not at the top of the work list
    and removed
    team-iosOwned by iOS platform team
    a: tests"flutter test", flutter_test, or one of our tests
    engineflutter/engine related. See also e: labels.
    P2Important issues not at the top of the work list
    c: flakeTests that sometimes, but not always, incorrectly pass
    on Oct 12, 2026

  4. 2 remaining items

  5. vashworth
    added
    c: flakeTests that sometimes, but not always, incorrectly pass
    team-iosOwned by iOS platform team
    triaged-iosTriaged by iOS platform team
    on Oct 14, 2026
  6. vashworth
    added a parent issue on Oct 19, 2026
  7. github-project-automation
    added this to Flutter Engine Focuson Oct 19, 2026
  8. github-project-automation
    moved this to Todo in Flutter Engine Focuson Oct 19, 2026
  9. vashworth
    added
    platform-iosiOS applications specifically
    and removed
    P2Important issues not at the top of the work list
    triaged-iosTriaged by iOS platform team
    on Oct 19, 2026
  10. frank-weindel
    added a commit that references this issue on Oct 20, 2026

    Migrate Mac mac_unopt to macOS 26 (flutter#194461)

    ad52f8e
  11. vashworth
    added
    P1High-priority issues at the top of the work list
    on Oct 26, 2026
  12. suryaKommana2662
    added a commit that references this issue on Oct 29, 2026

    Migrate Mac mac_unopt to macOS 26 (flutter#194461)

    bc7b3f1
  13. hellohuanlin
    added
    triaged-iosTriaged by iOS platform team
    P2Important issues not at the top of the work list
    and removed
    P1High-priority issues at the top of the work list
    on Oct 29, 2026
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment

Metadata

Metadata

Assignees

No one assigned

    Labels

    P2Important issues not at the top of the work lista: tests"flutter test", flutter_test, or one of our testsc: flakeTests that sometimes, but not always, incorrectly passengineflutter/engine related. See also e: labels.platform-iosiOS applications specificallyteam-iosOwned by iOS platform teamtriaged-iosTriaged by iOS platform team

    Type

    No type

    Projects

    No projects

      Milestone

      No milestone

      Relationships

      None yet

      Development

      No branches or pull requests

      Issue actions