mocha_test/ensureAsync.js


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var async = require('../lib');
var expect = require('chai').expect;

describe('ensureAsync', function() {
  var passContext = function(cb) {
    cb(this);
  };

  it('should propely bind context to the wrapped function', function(done) {

    // call bind after wrapping with ensureAsync
    var context = {context: "post"};
    var postBind = async.ensureAsync(passContext);
    postBind = postBind.bind(context);
    postBind(function(ref) {
      expect(ref).to.equal(context);
      done();
    });
  });

  it('should not override the bound context of a function when wrapping', function(done) {

    // call bind before wrapping with ensureAsync
    var context = {context: "pre"};
    var preBind = passContext.bind(context);
    preBind = async.ensureAsync(preBind);
    preBind(function(ref) {
      expect(ref).to.equal(context);
      done();
    });
  });
});