Complete completer only once in hot restart tests#186702
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These tests rely on a call to function being uncommented during a hot restart/hot reload. That uncommented function will then print a statement that the tests looks for. On the web, the function also periodically prints the same statement to guard against lost print statements (flutter#86202). The issue then is that the completer may be completed multiple times before the test completes, so guard against that.
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This pull request updates the stdout listeners in hot_restart_outside_lib_web_test_common.dart and hot_restart_web_test_common.dart to check if the Completer is already finished before calling complete(). This prevents potential errors if the success message is encountered multiple times. I have no feedback to provide.
flutter-zl
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May 18, 2026
nshahan
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May 18, 2026
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flutter/flutter@3598686...259aeae 2026-05-19 engine-flutter-autoroll@skia.org Roll Skia from 967ddb1aa561 to f1b406860c5e (2 revisions) (flutter/flutter#186731) 2026-05-19 engine-flutter-autoroll@skia.org Roll Fuchsia Linux SDK from 5Ki-dBY4SpWdQMF_3... to -F9Ci3Opxt06MixDl... (flutter/flutter#186727) 2026-05-19 116356835+AbdeMohlbi@users.noreply.github.com Remove unused field in `ResourceExtractor` (flutter/flutter#186629) 2026-05-19 mbrase@google.com Update Fuchsia tests to use realm_builder_server as a subpackage (flutter/flutter#186409) 2026-05-19 engine-flutter-autoroll@skia.org Roll Skia from cebf49d034b8 to 967ddb1aa561 (4 revisions) (flutter/flutter#186720) 2026-05-19 137456488+flutter-pub-roller-bot@users.noreply.github.com Roll pub packages (flutter/flutter#186721) 2026-05-19 chris@bracken.jp [macOS][gn] support both x64/arm64 macOS host clang toolchains for ASAN (flutter/flutter#186669) 2026-05-19 chris@bracken.jp [macOS][gn] Use arm64 clang in generate_coverage.py on arm64 Macs (flutter/flutter#186662) 2026-05-19 awolff@google.com Fix broken link in impeller golden_tests readme (flutter/flutter#186470) 2026-05-19 engine-flutter-autoroll@skia.org Roll Skia from 27f7bba22600 to cebf49d034b8 (37 revisions) (flutter/flutter#186699) 2026-05-19 chris@bracken.jp [macOS][gn] Use arm64 clang in verify_exported.dart on arm64 Macs (flutter/flutter#186664) 2026-05-19 chris@bracken.jp [macOS][gn] Use arm64 clang in sanitizer_suppressions.sh on arm64 Macs (flutter/flutter#186663) 2026-05-19 chris@bracken.jp [macOS][gn] Use arm64 clang in copy_info_plist.py on arm64 Macs (flutter/flutter#186661) 2026-05-19 58529443+srujzs@users.noreply.github.com Complete completer only once in hot restart tests (flutter/flutter#186702) 2026-05-18 30870216+gaaclarke@users.noreply.github.com Testing autosubmit bot -- updating testowners (flutter/flutter#185226) 2026-05-18 chris@bracken.jp [ios] Correct handling for CADisplayLink paused-to-unpaused transitions (flutter/flutter#186457) 2026-05-18 chris@bracken.jp [Android][macOS][gn] support both x64/arm64 macOS host clang toolchains (flutter/flutter#186660) 2026-05-18 engine-flutter-autoroll@skia.org Roll Packages from 32c84d6 to b9bdd37 (2 revisions) (flutter/flutter#186683) 2026-05-18 jesswon@google.com [AGP 9] Upgrade Flutter Test Apps to AGP 9 (flutter/flutter#186200) If this roll has caused a breakage, revert this CL and stop the roller using the controls here: https://autoroll.skia.org/r/flutter-packages Please CC stuartmorgan@google.com on the revert to ensure that a human is aware of the problem. To file a bug in Packages: https://github.com/flutter/flutter/issues/new/choose To report a problem with the AutoRoller itself, please file a bug: https://issues.skia.org/issues/new?component=1389291&template=1850622 Documentation for the AutoRoller is here: https://skia.googlesource.com/buildbot/+doc/main/autoroll/README.md
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…r#11737) flutter/flutter@3598686...259aeae 2026-05-19 engine-flutter-autoroll@skia.org Roll Skia from 967ddb1aa561 to f1b406860c5e (2 revisions) (flutter/flutter#186731) 2026-05-19 engine-flutter-autoroll@skia.org Roll Fuchsia Linux SDK from 5Ki-dBY4SpWdQMF_3... to -F9Ci3Opxt06MixDl... (flutter/flutter#186727) 2026-05-19 116356835+AbdeMohlbi@users.noreply.github.com Remove unused field in `ResourceExtractor` (flutter/flutter#186629) 2026-05-19 mbrase@google.com Update Fuchsia tests to use realm_builder_server as a subpackage (flutter/flutter#186409) 2026-05-19 engine-flutter-autoroll@skia.org Roll Skia from cebf49d034b8 to 967ddb1aa561 (4 revisions) (flutter/flutter#186720) 2026-05-19 137456488+flutter-pub-roller-bot@users.noreply.github.com Roll pub packages (flutter/flutter#186721) 2026-05-19 chris@bracken.jp [macOS][gn] support both x64/arm64 macOS host clang toolchains for ASAN (flutter/flutter#186669) 2026-05-19 chris@bracken.jp [macOS][gn] Use arm64 clang in generate_coverage.py on arm64 Macs (flutter/flutter#186662) 2026-05-19 awolff@google.com Fix broken link in impeller golden_tests readme (flutter/flutter#186470) 2026-05-19 engine-flutter-autoroll@skia.org Roll Skia from 27f7bba22600 to cebf49d034b8 (37 revisions) (flutter/flutter#186699) 2026-05-19 chris@bracken.jp [macOS][gn] Use arm64 clang in verify_exported.dart on arm64 Macs (flutter/flutter#186664) 2026-05-19 chris@bracken.jp [macOS][gn] Use arm64 clang in sanitizer_suppressions.sh on arm64 Macs (flutter/flutter#186663) 2026-05-19 chris@bracken.jp [macOS][gn] Use arm64 clang in copy_info_plist.py on arm64 Macs (flutter/flutter#186661) 2026-05-19 58529443+srujzs@users.noreply.github.com Complete completer only once in hot restart tests (flutter/flutter#186702) 2026-05-18 30870216+gaaclarke@users.noreply.github.com Testing autosubmit bot -- updating testowners (flutter/flutter#185226) 2026-05-18 chris@bracken.jp [ios] Correct handling for CADisplayLink paused-to-unpaused transitions (flutter/flutter#186457) 2026-05-18 chris@bracken.jp [Android][macOS][gn] support both x64/arm64 macOS host clang toolchains (flutter/flutter#186660) 2026-05-18 engine-flutter-autoroll@skia.org Roll Packages from 32c84d6 to b9bdd37 (2 revisions) (flutter/flutter#186683) 2026-05-18 jesswon@google.com [AGP 9] Upgrade Flutter Test Apps to AGP 9 (flutter/flutter#186200) If this roll has caused a breakage, revert this CL and stop the roller using the controls here: https://autoroll.skia.org/r/flutter-packages Please CC stuartmorgan@google.com on the revert to ensure that a human is aware of the problem. To file a bug in Packages: https://github.com/flutter/flutter/issues/new/choose To report a problem with the AutoRoller itself, please file a bug: https://issues.skia.org/issues/new?component=1389291&template=1850622 Documentation for the AutoRoller is here: https://skia.googlesource.com/buildbot/+doc/main/autoroll/README.md
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These tests rely on a call to function being uncommented during a hot restart/hot reload. That uncommented function will then print a statement that the tests looks for. On the web, the function also periodically prints the same statement to guard against lost print statements
(#86202).
The issue then is that the completer may be completed multiple times before the test completes, so guard against that.
Fixes #186698
Pre-launch Checklist
///).