[platform_view]retry launch if it fails to launch for xcuitest #110030
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hellohuanlin
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Aug 22, 2022
| // Here we simply try terminating the app in tearDown, but if it does not work, | ||
| // then alternative solution is to terminate and relaunch the app. | ||
| [self.app terminate]; | ||
| [super tearDown]; |
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I will keep this tearDown with "terminate" since it may provide extra safety (and some of our tests also have it).
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Does this fix the flake? Can you reproduce it with led?
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Aug 23, 2022
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| int remainingLaunchCount = 10; | ||
| while (true) { |
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I actually started with a for-loop, but found that I was checking the termination condition twice (once in the for and once in the inner if), which can easily make mistake.
for (int i = 0; i < 10; i++) {
// ...
// ...
if (i < 9) { // this should be i < 9, not i < 10, i stared at it for like 30 seconds when writing it
NSLog(@"Retry launch %d", i);
} else {
NSLog(@"Give up, failed to launch");
}
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* e997ab8 Roll Flutter Engine from 00bb6056cb80 to e70ba6a3a32d (1 revision) (flutter/flutter#110003) * 6540ae0 Add clipBehavior to Card+InkWell example (flutter/flutter#109872) * 3dcc6ed Roll Plugins from cd586d7 to 89fe2a2 (4 revisions) (flutter/flutter#110008) * c43e44b Roll Flutter Engine from e70ba6a3a32d to 0d182ddb0d1d (1 revision) (flutter/flutter#110009) * 6a1fc9e InputDecorator iconColor/prefixIconColor/suffixIconColor (flutter/flutter#109988) * d4eaf01 Roll Flutter Engine from 0d182ddb0d1d to 60707621bf9b (1 revision) (flutter/flutter#110011) * 77b41ba Remove the FocusScopeNode in the navigator (flutter/flutter#109702) * 4b361cc Roll Flutter Engine from 60707621bf9b to ca7acb34c5bc (2 revisions) (flutter/flutter#110015) * a8d6649 Roll Flutter Engine from ca7acb34c5bc to 38d2213d99ac (1 revision) (flutter/flutter#110026) * 717d92e Roll Flutter Engine from 38d2213d99ac to 9513c34aabcd (2 revisions) (flutter/flutter#110033) * 7e12b37 Deprecate 2018 text theme parameters (flutter/flutter#109817) * ff803fd 0fd04455f deprecate pushPhysicalLayer (flutter/engine#35566) (flutter/flutter#110036) * 484a884 Bump github/codeql-action from 2.1.19 to 2.1.20 (flutter/flutter#110044) * aa9b29b Roll Flutter Engine from 0fd04455fd77 to 7252c6406b2c (3 revisions) (flutter/flutter#110042) * d79a3d7 Remove most benchmarks of SkSL warmup (flutter/flutter#110040) * 7e33cd5 Fixed leading button size on app bar (flutter/flutter#110043) * 129fa76 Moving ios benchmark tests to prod. (flutter/flutter#110049) * 111a7d0 [platform_view]retry launch if it fails to launch for xcuitest (flutter/flutter#110030) * 2d8067e Roll Flutter Engine from 7252c6406b2c to 258c580a83c6 (3 revisions) (flutter/flutter#110051) * 328545e Roll Flutter Engine from 258c580a83c6 to ca48808d06f3 (1 revision) (flutter/flutter#110054) * 720010c Roll Flutter Engine from ca48808d06f3 to 8c29591b89a3 (10 revisions) (flutter/flutter#110078) * abfba69 Roll Flutter Engine from 8c29591b89a3 to c9d0a012817d (1 revision) (flutter/flutter#110087) * 6d65551 Roll Plugins from 89fe2a2 to 3a5e6f3 (4 revisions) (flutter/flutter#110092) * 8027842 Copy artifacts to `applicationBinaryPath` when specified for build+test separation (flutter/flutter#109879) * c865207 Document tristate value (flutter/flutter#110106) * c8569b6 Revert "Fixed leading button size on app bar (#110043)" (flutter/flutter#110103) * 9ef5017 Update open_jdk version `version:11` (flutter/flutter#110110) * c0c3874 Revert "Reland: Set IconButton.visualDensity default to VisualDensity.standard (#109432)" (flutter/flutter#110119) * 0f9206c Roll Flutter Engine from c9d0a012817d to 8cc02dc73e95 (11 revisions) (flutter/flutter#110121) * 34b4066 Roll Flutter Engine from 8cc02dc73e95 to 9dee4b9e4b8f (1 revision) (flutter/flutter#110122)
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Looks like we have to retry launch if it fails to launch (flaky tests here). I will keep this
tearDownwith "terminate" since it may provide extra safety (and some of our tests also have it).Related to #109720
List which issues are fixed by this PR. You must list at least one issue.
If you had to change anything in the flutter/tests repo, include a link to the migration guide as per the breaking change policy.
#109697
Pre-launch Checklist
///).If you need help, consider asking for advice on the #hackers-new channel on Discord.