Checking if controller exists

[padsbanger]

Hello, can you explain me something ?

In controllers testing pattern you have something like this:

var myCtrl;

// Initialize the controller and scope beforeEach(function () { // Load the controller's module module('myApp');

// create contreoller
inject(function ($controller,) {
  scope = {};
  myCtrl = $controller('myCtrl', {
    $scope: scope
  });
});

});

// Now time for test Can you explaing why this test is passing

it('should exist', function () { expect(!!myCtrl).toBe(true); });

// and this one

it('should exist', function () { expect(myCtrl).toBe(true); });

// is throwing an error like this:

Expected {  } to be true.
Error: Expected {  } to be true.

Isnt something like this !!true === true, actuall true ?

[daniellmb]

!! is just a simple way to convert to a boolean. So if the controller object was created it would be true, and if the value of myCtrl null or undefined etc. then it will be false.

[padsbanger]

Ok, cool tip, thanks :)