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test(e2e): wait for Android emulator to settle and hide ANR dialogs - #501
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KisaneNeko wants to merge 1 commit into
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Right after boot the CI emulator is CPU-saturated and system apps (System UI, GMS) hit ANRs. The "System UI isn't responding" dialog then covers the app, UIAutomator only sees the dialog window, and the greeting check times out. Before Detox starts, suppress error dialogs, wait until CPU pressure (/proc/pressure/cpu) stays low, and close any dialog already showing. The wait is best-effort and never fails the job. Refs callstack#499
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Refs #499
Problem
Android Detox E2E jobs (Expo 57, Expo 58, Vanilla) fail randomly. In 5 of the 7 failed runs I checked, the app was running fine, but a "System UI isn't responding" dialog was covering it. The emulator is overloaded right after boot (CPU pressure ~98%) and system apps hit ANRs. UIAutomator only sees the dialog window, so the greeting check times out.
Change
prepare-android-emulator-for-detox.shnow does three things before Detox starts:hide_error_dialogs 1so ANRs don't show a dialog./proc/pressure/cpu,some avg10) stays below 40 for ~15 s. It gives up after 300 s and continues; this step never fails the job.CLOSE_SYSTEM_DIALOGSto close a dialog that was already showing.Tested locally on an API 34 emulator by forcing an ANR: the dialog reproduces the CI symptom, and both commands remove it. Android closes the app that hung, which for system apps means a restart.
Before merging
Draft PR. I want to re-run the Android E2E jobs 10–20 times here to check two things:
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