react/scripts/jest/spec-equivalence-reporter/setupTests.js

44 lines
1.1 KiB
JavaScript

/*!
* Copyright (c) Meta Platforms, Inc. and affiliates.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/
'use strict';
const spyOn = jest.spyOn;
// Spying on console methods in production builds can mask errors.
// This is why we added an explicit spyOnDev() helper.
// It's too easy to accidentally use the more familiar spyOn() helper though,
// So we disable it entirely.
// Spying on both dev and prod will require using both spyOnDev() and spyOnProd().
global.spyOn = function () {
throw new Error(
'Do not use spyOn(). ' +
'It can accidentally hide unexpected errors in production builds. ' +
'Use spyOnDev(), spyOnProd(), or spyOnDevAndProd() instead.'
);
};
global.spyOnDev = function (...args) {
if (__DEV__) {
return spyOn(...args);
}
};
global.spyOnDevAndProd = spyOn;
global.spyOnProd = function (...args) {
if (!__DEV__) {
return spyOn(...args);
}
};
expect.extend({
...require('../matchers/reactTestMatchers'),
...require('../matchers/toThrow'),
...require('../matchers/toWarnDev'),
});