Unreliable unit tests

[friederbluemle]

Some unit test randomly appear to fail in certain conditions (for example when using Node.js 20 or later).

Example 1 (unit tests related to code push):

https://github.com/friederbluemle/electrode-native/actions/runs/9495253376/job/26167127192#step:6:520

https://dev.azure.com/ElectrodeNative/Electrode%20Native/_build/results?buildId=7222&view=logs&j=195f2670-0934-542b-f708-55083700808e&t=aee57a02-7e04-5dc7-01bc-f6a4fd498e68&l=2012

  340 passing (621ms)
  1 pending
  3 failing

  1) getCodePushInitConfig
       should return the access key from code push config if keys are present in both config files:
     AssertionError: expected undefined to equal '1e2509c78c4f94c25e69131a0a5e5be3b7d2927b'
      at Context.<anonymous> (test/getCodePushInitConfig-test.ts:40:53)
      at processImmediate (node:internal/timers:478:21)

  2) getCodePushInitConfig
       should return the access key from code push config if key is not present in .ernrc:
     AssertionError: expected undefined to equal '1e2509c78c4f94c25e69131a0a5e5be3b7d2927b'
      at Context.<anonymous> (test/getCodePushInitConfig-test.ts:55:53)
      at processImmediate (node:internal/timers:478:21)

  3) getCodePushSdk
       should not throw if an access key exists:
     AssertionError: expected [Function: getCodePushSdk] to not throw an error but 'Error: Unable to get the CodePush config to use' was thrown
      at Context.<anonymous> (test/getCodePushSdk-test.ts:43:40)
      at processImmediate (node:internal/timers:478:21)

Example 2 (two different unit tests related to CauldronHelper):

  460 passing (6s)
  2 failing

  1) CauldronHelper.js
       getYarnLock
         should return the yarn lock if found for key:
     Error: ENOENT: no such file or directory, open '/var/folders/xb/4lt2zppd3cnc6qhcc09wxb8r0000gn/T/tmp-32217-3fMBmodIH4Ix/yarnlocks/f0bf18dc-98ce-4548-bb2b-3ec35616091a'
      at Object.open (node:internal/fs/sync:78:18)
      at Object.openSync (node:fs:565:17)
      at Object.readFileSync (node:fs:445:35)
      at EphemeralFileStore.getFile (src/EphemeralFileStore.ts:57:17)
      at processTicksAndRejections (node:internal/process/task_queues:95:5)
      at Context.<anonymous> (test/CauldronHelper-test.ts:785:24)

  2) CauldronHelper.js
       updateYarnLock
         should update the yarn lock:
     Error: ENOENT: no such file or directory, open '/var/folders/xb/4lt2zppd3cnc6qhcc09wxb8r0000gn/T/tmp-32217-Lp4GZ8AHiQVY/yarnlocks/f2886fd3-3824-4e2b-ac07-2f116b691674'
      at Object.open (node:internal/fs/sync:78:18)
      at Object.openSync (node:fs:565:17)
      at Object.readFileSync (node:fs:445:35)
      at EphemeralFileStore.getFile (src/EphemeralFileStore.ts:57:17)
      at processTicksAndRejections (node:internal/process/task_queues:95:5)
      at Context.<anonymous> (test/CauldronHelper-test.ts:920:24)

[friederbluemle]

And another one:

https://github.com/electrode-io/electrode-native/actions/runs/9748129912/job/26902753096?pr=1907

  342 passing (371ms)
  1 pending
  1 failing

  1) ModuleFactory
       getModuleInstance
         should create the cache directory if it does not exist [remote registry package]:
     Error: ENOENT: no such file or directory, open '/Users/runner/work/electrode-native/electrode-native/ern-core/test/ModuleFactoryCache/package.json'