Previously: #1382

The ramifications of the Facebook patents grant decision extend beyond using React. In #1382, we ported from a Mocha test framework to using Jest. Jest is covered by the same patents grant:

https://github.com/facebook/jest/blob/master/PATENTS

Therefore, like React, we are in the position to be moving away from Jest. This could mean:

• Returning to Mocha
• Evaluating other options which provide similar benefits to Jest, as outlined in Tests: Setup Jest as an alternative test runner #1382
• Adopting the QUnit testing approach used elsewhere in core

This ought to be the topic of a JavaScript Core Slack meeting, though the next scheduled meeting will be occupied primarily by discussion of frameworks and hooks.

EDIT: react-test-renderer is another lib that has patent grant.