mocking w/ sinon example

tests.js

//weird codewars function
function _if(bool, func1, func2) {
  if(bool === true){
    return func1();
  } else {
    return func2();
  }
};

//arrange
var function1 = function(){console.log("asdf")};
var function2 = function(){console.log("jkl;")};

var spy1 = sinon.spy(function1);
var spy2 = sinon.spy(function2);

//act
_if(true, function1, function2);

//assert
Test.assertTrue(spy1.calledOnce);
Test.assertFalse(spy2.called);