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jest-plugin-console-matchers

v2.9.0

Published

Adds jest matchers for watching console methods.

Downloads

2,360

Readme

jest-plugin-console-matchers

npm npm npm

Adds jest matchers for watching console methods.

Getting Started

Install jest-plugin-console-matchers using yarn:

yarn add --dev jest-plugin-console-matchers

Matchers

Adds the following matchers which check for console methods to be called:

| Matcher | Method | |---------|--------| | toConsoleError | console.error | | toConsoleInfo | console.info | | toConsoleLog | console.log | | toConsoleWarn | console.warn | | toThrowWarning | warning |

Usage

If you want, you can import the matchers to install them in a set of tests.

import 'jest-plugin-console-matchers/setup';

If you want to install the matchers globally, you can modify the jest section of your package.json to include:

"jest": {
  "setupFiles": [
    "jest-plugin-console-matchers/setup"
  ]
}

Example

Example spec that uses these matchers.

import 'jest-plugin-console-matchers/setup';

describe('User', () => {
  set('user', () => new User());

  describe('.sayHello', () => {
    it('logs hello', () => {
      expect(() => user.sayHello()).toConsoleLog();
    });
  });

  describe('.delete', () => {
    it('warns about deleting', () => {
      expect(() => user.delete()).toConsoleWarn();
    });
  });
});

Contributing

If you have any ideas on how this plugin could be better, create an Issue or submit a PR.