The AngularJS folks kind of punt on this one a bit. Their suggestion, if you use a custom AngularJS directive that uses external templates via the templateUrl
parameter, is to use something like karma-ng-html2js-preprocessor
to precompile HTML templates and thus avoid having to load them over HTTP during tests.
You can get karma-ng-html2js-preprocessor
here:
https://github.com/karma-runner/karma-ng-html2js-preprocessor