util-ex/test/inject-test.js

Browser-friendly enhanced util fully compatible with standard node.js

import sinonChai from "sinon-chai";
import sinon from "sinon";
import chai from "chai";
var assert = chai.assert;
var expect = chai.expect;
var should = chai.should();
chai.use(sinonChai);

import inject from '../src/inject.js';

describe("inject", function () {
  it("should inject function and modifying arguments with beforeExec, afterExec", function () {
    var orgExec = sinon.spy(() => 222);
    var newArgs = inject.createArguments(['hi', 1]);
    var beforeExec = sinon.spy(function () {
      return newArgs;
    });
    var afterExec = sinon.spy();
    var newExec = inject(orgExec, beforeExec, afterExec);
    expect(newExec(1, 2)).to.be.equal(222);
    beforeExec.should.have.been.calledOnce;
    beforeExec.should.have.been.calledWith(1, 2);
    orgExec.should.have.been.calledOnce;
    orgExec.should.have.been.calledWith('hi', 1);
    afterExec.should.have.been.calledOnce;
    afterExec.should.have.been.calledWith('hi', 1, 222, false);
  });
});