Detox flaky when running yarn test:e2e and using npx ignite-cli new PizzaApp --expo

[henrymoulton]

What's going on?

Detox fails sometimes when running app with Expo.

Steps to reproduce

1. npx ignite-cli new PizzaApp --expo
2. yarn test:e2e

---

ignite doctor results:

λ npx ignite doctor
Downloading Chromium r588429 - 82.7 Mb [====================] 100% 0.0s 
  ✔ cwebp pre-build test passed successfully
  ✔ gifsicle pre-build test passed successfully
  ✔ mozjpeg pre-build test passed successfully
  ✔ optipng pre-build test passed successfully
  ✔ pngquant pre-build test passed successfully
(node:52274) UnhandledPromiseRejectionWarning: Error: ENOENT: no such file or directory, open '/package.json'
    at Object.openSync (fs.js:462:3)
    at Object.readFileSync (fs.js:364:35)
    at getAuthor (/Users/henrymoulton/.npm/_npx/52274/lib/node_modules/ignite/dist/ignite.js:132:54)
    at build (/Users/henrymoulton/.npm/_npx/52274/lib/node_modules/ignite/dist/ignite.js:270:16)
    at Object.<anonymous> (/Users/henrymoulton/.npm/_npx/52274/lib/node_modules/ignite/dist/ignite-cli.js:16:21)
    at Module._compile (internal/modules/cjs/loader.js:1015:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1035:10)
    at Module.load (internal/modules/cjs/loader.js:879:32)
    at Function.Module._load (internal/modules/cjs/loader.js:724:14)
    at Function.executeUserEntryPoint [as runMain] (internal/modules/run_main.js:60:12)
(node:52274) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). To terminate the node process on unhandled promise rejection, use the CLI flag `--unhandled-rejections=strict` (see https://nodejs.org/api/cli.html#cli_unhandled_rejections_mode). (rejection id: 1)
(node:52274) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.

[henrymoulton]

Adding a test above that just maybe waits for the UI of the app being inserted into the Expo app come into view helps:

 it('handles expo -> app transition', async () => {
       await waitFor(element(by.id("next-screen-button"))).toBeVisible().withTimeout(8000)
  })

[jamonholmgren]

@henrymoulton Does the "handles expo -> app transition" test help every time? Or is it still flaky, but just somewhat less so?

[Norfeldt]

@jamonholmgren

$ npx ignite-cli new PizzaApp --expo
$ cd PizzaApp
$ yarn test:e2e
yarn run v1.22.17
$ ./bin/downloadExpoApp.sh && detox test --configuration ios.sim.expo
detox[21929] INFO:  [test.js] configuration="ios.sim.expo" useCustomLogger=true DETOX_START_TIMESTAMP=1642198819479 reportSpecs=true jest --config e2e/config.json --testNamePattern '^((?!:android:).)*$' --maxWorkers 1 e2e
detox[22002] INFO:  [DetoxServer.js] server listening on localhost:64091...
detox[22002] INFO:  [AppleSimUtils.js] host.exp.Exponent launched. To watch simulator logs, run:
        /usr/bin/xcrun simctl spawn 327E3C9F-5839-4672-9777-BACE8C6D4D19 log stream --level debug --style compact --predicate 'process == "Expo Go"'
detox[22002] ERROR: [DetoxExportWrapper.js/DETOX_INIT_ERROR] 
 DetoxRuntimeError: Aborted detox.init() execution, and now running detox.cleanup()

HINT: Most likely, your test runner is tearing down the suite due to the timeout error
    at Detox.[_assertNoPendingInit] (/Users/norfeldt/Desktop/PizzaApp/node_modules/detox/src/Detox.js:204:9)
    at Detox.beforeEach (/Users/norfeldt/Desktop/PizzaApp/node_modules/detox/src/Detox.js:111:37)
    at DetoxExportWrapper.<computed> (/Users/norfeldt/Desktop/PizzaApp/node_modules/detox/src/DetoxExportWrapper.js:87:32)
    at DetoxAdapterImpl.beforeEach (/Users/norfeldt/Desktop/PizzaApp/node_modules/detox/runners/jest/DetoxAdapterImpl.js:28:22)
    at DetoxAdapterJasmine.beforeEach (/Users/norfeldt/Desktop/PizzaApp/node_modules/detox/runners/jest/DetoxAdapterJasmine.js:19:5)
detox[22002] INFO:  [AppleSimUtils.js] host.exp.Exponent launched. To watch simulator logs, run:
        /usr/bin/xcrun simctl spawn 327E3C9F-5839-4672-9777-BACE8C6D4D19 log stream --level debug --style compact --predicate 'process == "Expo Go"'

 RUNS  e2e/firstTest.spec.js

It opens the simulator, installs the app, tries to open it and fails.

[joshuayoes]

Our Detox workflow has been revamped since our latest Ignite release, Maverick.

This is going to be closed for now, but please re-open if this still needs attention.