Enzyme: Enzyme mount(): TypeError: Cannot read property 'rendered' of null
Similar problem as https://github.com/airbnb/enzyme/issues/1195
This is possibly a problem with https://github.com/Root-App/react-native-mock-render~~
TypeError: Cannot read property 'rendered' of null
at Object.getNode (node_modules/enzyme-adapter-react-16/build/ReactSixteenAdapter.js:233:69)
at new ReactWrapper (node_modules/enzyme/build/ReactWrapper.js:100:33)
at mount (node_modules/enzyme/build/mount.js:19:10)
at createTestApp (test/testHelper.js:20:27)
at Object._callee$ (test/container-component/container.test.js:13:35)
at tryCatch (node_modules/regenerator-runtime/runtime.js:63:29)
at Generator.invoke [as _invoke] (node_modules/regenerator-runtime/runtime.js:337:12)
at Generator.prototype.(anonymous function) [as next] (node_modules/regenerator-runtime/runtime.js:96:13)
at tryCatch (node_modules/regenerator-runtime/runtime.js:63:29)
at invoke (node_modules/regenerator-runtime/runtime.js:139:12)
My versions:
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My test-code which produces the problem:
https://gist.github.com/Keksike/8afd4787f80c08e4e6d36c24a7886510
Keksike
All 11 comments
Happens without react-native as well
eddiemonge
on 9 Oct 2017
I create a super basic test repo that shows this failing https://github.com/eddiemonge/enzyme-3-simple-test
eddiemonge
on 10 Oct 2017
Ran into this issue and did some debugging myself. Enzyme relies on the instance._reactInternalFiber property which did not exist until a later version of React. This did not work for me on react-native version 0.49.3 (the latest version at the moment) which uses react 16.0.0-beta.5. Updating to [email protected] fixed this issue.
michaelgmcd
on 26 Oct 2017
Sounds like we need to up the peer dep on the react 16 adapter to a later version; @michaelgmcd, do you know which exact react 16 version added that property?
ljharb
on 27 Oct 2017
I've only briefly looked into this, but it looks like this commit made the change and it was released in react 16.0.0-rc.1 according to this release candidate issue
michaelgmcd
on 27 Oct 2017
ok - we should lift the peer dep to that.
ljharb
on 27 Oct 2017
Is anyone else getting this error when trying to launch Enzyme setupTests.js: TypeError: Cannot read property 'ReactCurrentOwner' of undefined
patrickford
on 1 Feb 2018
@patrickford I got that error when I was using this adapter but was actually still pulling in React 15.X instead of 16.X
drewjenkins
on 23 Feb 2018
Thanks. We eventually figured that out. It was a project started a while back and was still on 15.x.
From: Andrew Jenkins notifications@github.com
Sent: Friday, February 23, 2018 8:19 AM
To: airbnb/enzyme
Cc: Patrick Ford; Mention
Subject: Re: [airbnb/enzyme] Enzyme mount(): TypeError: Cannot read property 'rendered' of null (#1217)
@patrickfordhttps://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgithub.com%2Fpatrickford&data=02%7C01%7C%7C854279fbba79405f7f5d08d57ad93da4%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636549995809031267&sdata=OYzX6so%2BWrZeON4HblyR6%2BT6Q8yPCV%2B2hFGNjvHHZx4%3D&reserved=0 I got that error when I was using this adapter but was actually still pulling in React 15.X instead of 16.X
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patrickford
on 23 Feb 2018
Make sure that you have enzyme-adapter-react-16 🙂
developer239
on 18 Jun 2018
This seems closeable; please file a new issue if there's still problems.
ljharb
on 30 Jun 2018
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Most helpful comment
Make sure that you have
enzyme-adapter-react-16🙂