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Flaky Android Expo Detox E2E: native greeting never shows up / app drops Detox connection

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#499 0 comentários 0 reações 0 responsáveis Ver no GitHub

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Avaliação

Dificuldade
4/5
Tempo estimado
3-5 dias
Facilidade para iniciantes
45/100
Tipo de issue
Bug
Clareza
Razoavelmente clara
Status de atividade
Ativa
Stack de tecnologia
android, github-actions, react-native, typescript
Domínio
ci-cd, mobile-dev, testing

Direção de pesquisa

Start by downloading the Detox Android artifacts from the linked failed CI runs and inspect logcat-full.txt for a crash or ANR around the reported failures. Compare logs from both failure modes and the Vanilla job to see whether they share a cause. Done means identifying and reproducing the root cause on the matching CI emulator; collecting tombstones is suggested as an additional diagnostic.

Escrita pelo modelo de indexação a partir do texto da issue.

Descrição

The Detox E2E (AndroidApp - Expo XX) jobs keep failing on both Expo 57 and 58, on main and on PRs. Both tests in the suite fail together, so the job goes red each time it happens.

There are two ways it fails:

  1. The native greeting never shows up. In beforeAll, the app process starts (Android app process is up), but Hello native Android (Expo XX) never appears in UIAutomator. After ~90s it fails with Timed out waiting for UIAutomator to contain any of: Hello native Android (Expo 58), ....
  2. The app drops the Detox connection after opening the Expo RN screen. The greeting is fine, then Opening the Expo RN screen... → Detox can't seem to connect to the test app(s)!, which looks like the app crashed.

Also this one, where it lost the connection right after the process came up, before the greeting check finished: #487 e0f5940, Expo 57: https://github.com/callstack/react-native-brownfield/actions/runs/38458013604/job/115565183435

So my guess is the app is crashing in all of them, just at different moments. The failed jobs already upload the full host-side logcat (logcat-full.txt, added in #473) together with the other Detox artifacts (#466), in the detox-androidapp-<flavor>-<flavor>-android artifact. I haven't gone through those logs yet to confirm a crash.

The Android road test & E2E (AndroidApp - Vanilla) job fails the same way as (1): it waits for Hello native Android and all 4 tests time out. That one has failed on main d28810c, #494 and #487, so it might be the same root cause:
https://github.com/callstack/react-native-brownfield/actions/runs/38857242075/job/116831993012

To do:

  • go through logcat-full.txt from the failed runs' artifacts and look for a crash / ANR
  • consider also pulling tombstones (/data/tombstones) on failure (not collected yet)
  • try to repro locally on the same emulator image (API level / ABI as CI)
Linguagem predominante
TypeScript
Estrelas
552
Forks
57
Merge médio
2d 23h
PRs com merge (30d)
19

Preparar o ambiente

Primeiros passos

  1. Leia a issue inteira e depois o guia de contribuição do projeto.
  2. Comente na issue dizendo que vai assumir — evita que duas pessoas façam o mesmo trabalho.
  3. Faça um fork do repositório e trabalhe em uma branch.
  4. Abra um pull request que referencie o número da issue.

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