Jest Matcher calledOn

A Jest custom matcher that asserts a Spy or Stub was called on a given context, like sinon.calledOn

Usage

1$ npm i jest-matcher-called-on

In <rootDir>/jest/customMatchers.js add the following

1import calledOn from 'jest-matcher-called-on';
2
3expect.extend(calledOn);

Then in ./package.json add

1"jest": {
2  "setupTestFrameworkScriptFile": "<rootDir>/jest/customMatchers.js"
3}

And use in your tests like

1expect(spy).calledOn(obj);

Scripts

1$ npm t

1$ npm run lint

Contributions and comments welcome.