@djforth/morse-jasmine/mock_class.js

Utilies for Jasmine Tests

"use strict";

// See http://stackoverflow.com/questions/25688880/spy-on-a-constructor-using-jasmine
// exports.stub = function (Subject) {
//     var Surrogate = function () {
//         Surrogate.prototype.constructor.apply(this, arguments);
//     };
//     Surrogate.prototype = Object.create(Subject.prototype);
//     Surrogate.prototype.constructor = Subject;
//     return Surrogate;
// };

function addMethods(ClassConst, methods) {
  return _.map(methods, function (m) {
    var title = _.isString(m) ? m : m.title;
    var spy = jasmine.createSpy(title);
    if (m.value && m.type) withReturn(spy, m.type, m.value);
    ClassConst.prototype[title] = spy;
    return { title: title, spy: spy };
  });
}

module.exports = function (title, methods) {
  var init = jasmine.createSpy("init");
  var spies = [{ title: "init", spy: init }];
  var ConstClass = function ConstClass() {
    init.apply(this, arguments);
  };

  // let ConstClass = this[title]

  if (_.isArray(methods) && !_.isEmpty(methods)) {
    spies = spies.concat(addMethods(ConstClass, methods));
  }

  return {
    getMock: function getMock() {
      return ConstClass;
    },
    getConstSpy: function getConstSpy() {
      var obj = _.find(spies, function (spy) {
        return spy.title === "init";
      });

      return obj.spy;
    },
    getSpy: function getSpy(spy_name) {
      var obj = _.find(spies, function (spy) {
        return spy.title === spy_name;
      });

      return obj.spy;
    }
  };
};