Enzyme: can not find module 'react-addon-test-utils' from 'node_modules/enzyme/build'

[mlding]

Our project is using :
React: ^15.5.4
react-dom: ^15.5.4
react-test-renderer: ^15.5.4

according to airbnb/enzyme website, If you are using React >=15.5, in addition to enzyme, you will have to ensure that you also have the react-dom and react-test-renderer npm modules installed, we already installed these npm modules, only that in React 0.14 or React <15.5 need to install the react-addons-test-utils.
when we use enzyme to test our react component, there is a problem:
can not find module 'react-addon-test-utils' from 'node_modules/enzyme/build'.
If we install the module 'react-addon-test-utils', then the test is OK, but our React >=15.5, Why we need to install the react-addon-test-util?

Anybody has solution to this problem? Thanks~

[ljharb]

What version of enzyme are you using?

[jenyeeiam]

I have the same set up, and have tried enzyme 2.8.0, 2.8.1, 2.8.2 to no avail :(

[ljharb]

react-addons-test-utils is only attempted to be required when either of these two requires fail.

With v2.8.2 installed, if you try to require those things in the node repl, what happens?

[zettadam]

Still fails with:
react: ^15.5.4,
react-dom: ^15.5.4,
react-test-renderer: ^15.5.4,
enzyme: ^2.8.2

on my Mac and on Linux:

WARNING in ./~/encoding/lib/iconv-loader.js
Critical dependencies:
9:12-34 the request of a dependency is an expression
 @ ./~/encoding/lib/iconv-loader.js 9:12-34

ERROR in ./~/enzyme/build/react-compat.js
Module not found: Error: Cannot resolve module 'react-addons-test-utils' in /Users/../.node_modules/enzyme/build
 @ ./~/enzyme/build/react-compat.js 143:20-54

[ljharb]

And in the node repl, if you type require('react-dom/test-utils') and require('react-test-renderer/shallow'), what happens?

(also, just to confirm, npm ls is existing zero?)

[zettadam]

npm ls returns no errors. I have also installed [email protected] and still see the same error.

[ljharb]

And what about those repl requires?

[rafaelkallis]

@ljharb same situation here,

react: ^15.5.4,
react-dom: ^15.5.4,
react-test-renderer: ^15.5.4,
enzyme: ^2.8.2

and getting:

ERROR in ./~/enzyme/build/react-compat.js
Module not found: Error: Can't resolve 'react-addons-test-utils' in '/Users/.../node_modules/enzyme/build'
 @ ./~/enzyme/build/react-compat.js 143:20-54

I'm also able to directly require react-dom/test-utils and react-test-rendered/shallow.

In my case, I'm using karma with karma-webpack.

Adding this to my webpack config removed the warnings:

externals: {
  cheerio: 'window',
  'react/addons': 'react',
  'react/lib/ExecutionEnvironment': 'react',
  'react/lib/ReactContext': 'react',
  'react-addons-test-utils': 'react-dom', // <- added this
},

[bdwain]

@ljharb i have the same issue.

i have
"react": 15.5.4
"react-dom": 15.5.4
"react-test-renderer": 15.5.4
"enzyme": 2.8.2

It started when i upgraded react-element-to-jsx-string, which no longer has react-addons-test-utils as a dependency, so now it is no longer in my project. it sounds like it was actually required for react 15.5 as well.

i ran the requires in the node repl and they both worked

require('react-test-renderer/shallow')
{ [Function: ReactShallowRenderer] createRenderer: [Function] }

require('react-dom/test-utils')
{ renderIntoDocument: [Function: renderIntoDocument],
..... really long thing

[culshaw]

As per @rafaelkallis in my Karma configuration (non-webpack) I added

bundle.external('react-dom/test-utils');
bundle.external('react-test-renderer/shallow');

to my karma.conf.js

This solved the problem for me

[bdwain]

@ljharb i just upgraded to the latest webpack and react and enzyme and everything and now when i run unit tests i get the error in my console but they still pass

ERROR in ./node_modules/enzyme/build/react-compat.js
Module not found: Error: Can't resolve 'react-addons-test-utils' in '/Users/.../node_modules/enzyme/build'
@ ./node_modules/enzyme/build/react-compat.js 137:18-52

adding react-addons-test-utils to package.json removes the console error. I already had react-test-renderer. all of them are the latest version in 15.x

[ljharb]

I don't think this is relevant any more now that we're on v3.