Assets AbstractApiModule test

assetApiModule.js

const AbstractApiModule = require('adapt-authoring-api');
const AssetSchema = require('../schema/asset.schema.js');
/**
* Abstract module which handles course assets
* @extends {AbstractApiModule}
*/
class AssetApiModule extends AbstractApiModule {
  /** @override */
  static get def() {
    return {
      name: 'assets',
      model: 'asset',
      schemas: [ AssetSchema ],
      routes: [
        {
          route: '/:_id?',
          handlers: {
            get: getFunction
          }
        }
      ]
    };
  }

  getFunction(req, res, next) {
    console.log('Assets getFunction called');
  }
}

module.exports = AssetApiModule;

Have just tested this out, and while there's nothing immediately wrong with the above, I think you're missing the module: true attribute from your package.json (see this doc page for an example).

The original reasoning behind this was to allow the inclusion of dependencies which don't export a module (e.g. the testing, lint and doc modules). It may be an idea to change this so the package config is no longer needed, and the module export is required, i.e.

// index.js
module.exports = { 
  module: ModuleClass, 
  utility: UtilityClass 
};

You'll also need to change where getFunction is declared, as the def is a static function.