test.js

  firstReport: computed.alias('reports.firstObject'),
    
  someOtherThing: computed('reports.[]', function() {
    return get(this, 'reports').map(report => doCoolStuff(report));
  }),
  ...
  ...
  ...
  
 getReports: task(function*() {
    let reports = yield get(this, 'store').query('report-menu', {
      q: 'classname-EQOrder' + get(this, 'constant').DELIM,
      orderby: 'sequence'
    });
   set(this, 'reports', reports);
  })

  actions: {
    fetchReports() {
      get(this, 'getReports').perform();
    }
  }