deep equals assertions with tolerance for chai

npm install --save-dev chai-mas-o-menos

After importing chai add the following code to use chai-mas-o-menos assertions:

var chai = require('chai');
var expect = chai.expect;

chai.use(require('chai-mas-o-menos'));

Now you can use the expect(...).to.masOMenos.deep.equal(...) chain for deep equals assertions with tolerance for numbers. The default tolerance is 1e-6 and can be overwritten by using e.g. expect(...).to.masOMenos(0.001).deep.equal(...).

it('works', function() {
  expect({ value: 42 }).to.masOMenos.deep.equal({ value: 41.9999999 });
});

chai-mas-o-menos is licensed under the MIT License.