Files
react/packages/shared/__tests__/ReactErrorProd-test.internal.js
Andrew Clark 75955bf1d7 Pass prod error messages directly to constructor (#17063)
* Remove "Invariant Violation" from dev errors

When I made the change to compile `invariant` to throw expressions, I
left a small runtime to set the error's `name` property to "Invariant
Violation" to maintain the existing behavior.

I think we can remove it. The argument for keeping it is to preserve
continuity in error logs, but this only affects development errors,
anyway: production error messages are replaced with error codes.

* Pass prod error messages directly to constructor

Updates the `invariant` transform to pass an error message string
directly to the Error constructor, instead of mutating the
message property.

Turns this code:

```js
invariant(condition, 'A %s message that contains %s', adj, noun);
```

into this:

```js
if (!condition) {
  throw Error(
    __DEV__
      ? `A ${adj} message that contains ${noun}`
      : formatProdErrorMessage(ERR_CODE, adj, noun)
  );
}
```
2019-10-11 09:10:40 -07:00

60 lines
2.1 KiB
JavaScript

/**
* Copyright (c) Facebook, Inc. and its affiliates.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*
* @emails react-core
*/
'use strict';
let formatProdErrorMessage;
describe('ReactErrorProd', () => {
let globalErrorMock;
beforeEach(() => {
if (!__DEV__) {
// In production, our Jest environment overrides the global Error
// class in order to decode error messages automatically. However
// this is a single test where we actually *don't* want to decode
// them. So we assert that the OriginalError exists, and temporarily
// set the global Error object back to it.
globalErrorMock = global.Error;
global.Error = globalErrorMock.OriginalError;
expect(typeof global.Error).toBe('function');
}
jest.resetModules();
formatProdErrorMessage = require('shared/formatProdErrorMessage').default;
});
afterEach(() => {
if (!__DEV__) {
global.Error = globalErrorMock;
}
});
it('should throw with the correct number of `%s`s in the URL', () => {
expect(formatProdErrorMessage(124, 'foo', 'bar')).toEqual(
'Minified React error #124; visit ' +
'https://reactjs.org/docs/error-decoder.html?invariant=124&args[]=foo&args[]=bar' +
' for the full message or use the non-minified dev environment' +
' for full errors and additional helpful warnings.',
);
expect(formatProdErrorMessage(20)).toEqual(
'Minified React error #20; visit ' +
'https://reactjs.org/docs/error-decoder.html?invariant=20' +
' for the full message or use the non-minified dev environment' +
' for full errors and additional helpful warnings.',
);
expect(formatProdErrorMessage(77, '<div>', '&?bar')).toEqual(
'Minified React error #77; visit ' +
'https://reactjs.org/docs/error-decoder.html?invariant=77&args[]=%3Cdiv%3E&args[]=%26%3Fbar' +
' for the full message or use the non-minified dev environment' +
' for full errors and additional helpful warnings.',
);
});
});