// karma.conf.js
module.exports = function(config) {
  config.set({
    preprocessors: {
      '**/*.html': ['html2js']
    },

    files: [
      '*.js',
      '*.html'
    ],

    html2JsPreprocessor: {
      // strip this from the file path
      stripPrefix: 'public/',

      // prepend this to the file path
      prependPrefix: 'served/',

      // or define a custom transform function
      processPath: function(filePath) {
        // Drop the file extension
        return filePath.replace(/\.html$/, '');
      }
    }
  });
};

window.__html__ = window.__html__ || {};
window.__html__['template.html'] = '<div>something</div>';