jest-matcher-one-of

A Jest matcher (toBeOneOf) to test if a value is one of many (like enums).

Installation

1. Add the package

   yarn add jest-matcher-one-of --dev
   npm install jest-matcher-one-of --save-dev

2. Require the package at the root of your test files

   require('jest-matcher-one-of');
   import 'jest-matcher-one-of'; // Using ES6 w/ Babel or TypeScript

Usage

expect(1).toBeOneOf([1, 2]);
expect(1).not.toBeOneOf([2, 3, 4]);
expect(1).toBeOneOf(1); // Also forgiving for non-array values

Contributing

Get the source code and run the tests.

$ git clone git@github.com:d4nyll/jest-matcher-one-of.git
$ yarn        # or npm install
$ yarn test   # or npm test