Have to specified testEnvironment in jest.config.js file in v27.0.3?

[LiJiahaoCoder]

🐛 Bug Report

Default test environment in jest is jsdom. But all my test cases crashed after I upgraded my jest to 27.0.3.

But when I specified testEnvironment: 'jsdom' in jest.config.js, it works!

To Reproduce

Steps to reproduce the behavior:

1. Upgrade jest to 27.0.3;
2. Run jest command in React project;

Expected behavior

Expect that all test cases passed, but it crashed and logged the message as follows:

The error below may be caused by using the wrong test environment,see https://jestjs.io/docs/configuration#testenvironment-string.

    Consider using the "jsdom" test environment.

Link to repl or repo (highly encouraged)

webpack-react-template

envinfo

jest: 27.0.3
node: 14.16.1
react: ^17.0.2
OS: MacOS Big Sur 11.2.1

Maybe it was cause by this: https://github.com/facebook/jest/pull/11482/files#diff-9dbb1da56fa2045712eef8db063b52b3555a799b93e858b7449b5561bef52d9fR613

[ahnpnl]

Jest 27 default testEnvironment is node. If you need to use jsdom, you need to specify it yourself.

[SimenB]

Default changed in v27 to node, as pointed out in the changelog and blog post

[github-actions]

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