Using angular.mock.inject in karma gives "TypeError: Cannot read property '$injector' of null"

I honestly don't know if this is the fix at all, and it probably only works for Mocha, but I was running into the same thing and I changed the first beforeEach bit to this:

beforeEach(function() { module('myApp'); });

and it seems to be working better. It seems like the timing of the angular.mocks.module call works out better if you let the testing framework (mocha in my case) have a wrapped version of the method.

I commonly run into this error when the issue is simply an un-closed ) or }

Outside of that, an approach to debug the issue might be to simplify until the problem goes away. That is, start removing large portions of code, a bit at a time, until you've "binary-searched" for the issue.

I have the same issue.

In my case, this error occurs when you use angular 1.0.8 and angular-mocks 1.0.8 with the newer version of Jasmine (2.0.0+, not so new actually)

angular-mock assumes some internal variable in Jasmine and it doesn't exist anymore in the new version.For more detail, see this one https://github.com/angular/angular.js/issues/5632.

The solution is either upgrade your Angular (not possible in my case) or downgrade your Jasmine.

If you use Grunt to run karma, downgrade your karma-jasmine to version '~0.1.0' will fix this issue. This version includes jasmine, so you should also remove 'jasmine-core' from your devDependencies. The set of devDependencies below worked for me.

"devDependencies": {    "grunt-karma": "^0.10.1",    "karma": "^0.12.31",    "karma-chrome-launcher": "^0.1.7",    "karma-coverage": "^0.2.7",    "karma-jasmine": "~0.1.0",    "karma-junit-reporter": "^0.2.2",    "karma-phantomjs-launcher": "^0.1.4",    "phantomjs": "^1.9.15",}