Node Jest Snapshot testing hangs forever

[MayasHaddad]

• Version: v9.2.0
• Platform: 17.2.0 Darwin Kernel Version 17.2.0: Fri Sep 29 18:27:05 PDT 2017; root:xnu-4570.20.62~3/RELEASE_X86_64 x86_64
• Subsystem: I don't know how to get this information

Steps to reproduce:

1. clone this repo: https://github.com/ferrannp/react-native-testing-example
2. execute on both node 8 and 9
3. in 9 test hangs

node 8: (works as expected)

node 9: (hangs forever)

I'm not even sure this issue is not due jest

Apologies if issue is not related to node or v8 🙏

[bnoordhuis]

@fhinkel Maybe you have an idea?

[apapirovski]

There's some weirdness around jest & node 9. There's a PR open that has some work in it to make node 9.x work but it seems like it might be stuck on this same 'hanging' problem. jestjs/jest#4851

[rogerkerse]

It is happening to me and my coworker as well. Only with node 9. Node 8 works well so it seems there is some kind of compatibility issue between 9 and jest

[SimenB]

@MayasHaddad Our issue in jest was a too old react-native, can you try upgrading to a later release?

[MayasHaddad]

@SimenB upgraded react-native@0.51.0 and the issue isn't reproducible anymore.

Closing this issue.

Thank you!

[wontonst]

For anyone who still has this issue, I found that --forceExit is a quick way to get unblocked.