console.clear();

​

console.log('creating iife');

​

​

// assertion function

function assert(condition, msg) {

  if (condition) {

    console.log('Pass');

  } else {

    console.log('Fail: ', msg);

  }

}

​

var iife1 = (function() {

  function foo() {

    return 'foo';

  }

  function bar() {

    return 'bar';

  }

  return {

    foo1: foo,

    bar1: bar

  };

})();

​

​

// testing

console.log('testing iife object', iife1);

​

​

assert(iife1.foo1() === 'foo', 'foo1 function should return string foo');

assert(iife1.foo1() === 'bar', 'foo1 function should return string foo');

assert(iife1.bar1() === 'bar', 'bar1 function should return string bar');

​

​