dependency-cruiser/test/report/errReporter.spec.js

Validate and visualize javascript dependencies. With your rules. ES6, CommonJS, AMD

"use strict";
const expect = require('chai').expect;
const render = require('../../src/report/errReporter');
const deps   = require('../fixtures/cjs-no-dependency-valid.json');

const NUMBER_OF_INVALID_DEPS_IN_FIXTURE = 24;

describe("err reporter", () => {
    it("renders a bunch of errors", () => {
        expect(render(deps).content.split('\n').length).to.equal(NUMBER_OF_INVALID_DEPS_IN_FIXTURE);
    });
});