All notes
Karma

Intro

Debug

karma-runner.github.io: FAQ.

Open http://localhost:9876/debug.html
then open DevTools and "Ctrl+o" to open the js file to debug
set debug point
and refresh the webpage.

Karma auto-watch is not working

SO: karma auto watch is not working.

Once you type karma start, and chrome launches, enable dev tools, and on the network tab, check disable cache.