Error: You need to include some adapter that implements __karma__.start method

Question

I\'m trying to add some unit tests to one of my projects.

So far I\'ve installed and configured karma, and have installed jasmine. I\'ve one test file in my te

Answer 1

Tt's complaining about the adapter which is probably jasmine or mocha. Either the adapter is missing, either is not setup correctly, either it's an outdated or buggy version of the adapter.

In my case I had an old version of mocha 2.5.3 which was not compatible with karma 1+. I updated the mocha dependency to the latest version available 3.2.0 and the problem solved.