AngularJS: How to use $controller in a controller

Question

Given the following module and controller:
```javascript
angular
   .module('app', [])
   .conroller('appController', function () {
      this.greeting = 'hello';
   });
```
And its associated unit test:
```javascript
describe('app', function () {
   beforeEach(module('app'));

   describe('appController', function () {
      beforeEach(inject(function () {
         appController = $controller('appController');
      }));
      
      it('should greet us', function () {
         expect(appController.greeting).toBe("hello");
      });
   });
});
```
What will happen?

Accepted Answer

The tests will fail and the following error will be displayed:

ReferenceError: Can't find variable: $controller

Answer

The tests will fail and the following error will be displayed:

TypeError: 'undefined' is not an object (evaluating 'locals.$scope')
undefined

Answer

The tests will fail and the following error will be displayed:

ReferenceError: Can't find variable: appController

Answer

The tests will pass: Executed 1 of 1 SUCCESS.

Question from the AngularJS test

AngularJS: How to use $controller in a controller