@djforth/morse-jasmine/src/mock_class.js

Utilies for Jasmine Tests

// 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, (m)=>{
    let title = (_.isString(m)) ? m : m.title
    let 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");
  let spies = [{title:"init", spy:init}]
  var ConstClass = function(){
    init.apply(this, arguments);
  }

  // let ConstClass = this[title]

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

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

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

      return obj.spy;
    }
  }
};