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RN: Fix mockComponent for Functional Components (#45196)

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Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/45196

Currently, `mockComponent` makes a false assumption that if a component is a function, it extends `React.Component`.

There's a bunch of problems with this mocking setup with requiring mock components that extend `React.Component`, but this change does not attemp to solve that.

This change unblocks future refactors to make native components export functional components (that are neither class component nor `forwardRef` results).

Changelog:
[General][Changed] - Fixed native component mocking in Jest unit tests to support functional components

Reviewed By: javache

Differential Revision: D59097730

fbshipit-source-id: ca2784ac3baa9ab4ab6a503c5fd6437c60179352
This commit is contained in:
Tim Yung
2024-06-27 07:26:04 -07:00
committed by Facebook GitHub Bot
parent 3965b7d78b
commit fb58494283
1 changed files with 4 additions and 1 deletions
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packages/react-native/jest/mockComponent.js
Vendored
+4 -1
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@@ -16,7 +16,10 @@ module.exports = (moduleName, instanceMethods, isESModule) => {
const React = require('react');
const SuperClass =
typeof RealComponent === 'function' ? RealComponent : React.Component;
typeof RealComponent === 'function' &&
RealComponent.prototype.constructor instanceof React.Component
? RealComponent
: React.Component;
const name =
RealComponent.displayName ||