/**
 * Copyright 2012-2017 Red Hat, Inc.
 *
 * Thermostat is distributed under the GNU General Public License,
 * version 2 or any later version (with a special exception described
 * below, commonly known as the "Classpath Exception").
 *
 * A copy of GNU General Public License (GPL) is included in this
 * distribution, in the file COPYING.
 *
 * Linking Thermostat code with other modules is making a combined work
 * based on Thermostat.  Thus, the terms and conditions of the GPL
 * cover the whole combination.
 *
 * As a special exception, the copyright holders of Thermostat give you
 * permission to link this code with independent modules to produce an
 * executable, regardless of the license terms of these independent
 * modules, and to copy and distribute the resulting executable under
 * terms of your choice, provided that you also meet, for each linked
 * independent module, the terms and conditions of the license of that
 * module.  An independent module is a module which is not derived from
 * or based on Thermostat code.  If you modify Thermostat, you may
 * extend this exception to your version of the software, but you are
 * not obligated to do so.  If you do not wish to do so, delete this
 * exception statement from your version.
 */

import * as sinon from 'sinon';

import { FormatBytesPipe } from './format-bytes.pipe';
import { Metric } from './metric';
import { ScaleBytesService } from '../services/scale-bytes.service'

describe('FormatBytesPipe', () => {

  let pipe: FormatBytesPipe;
  let svc: ScaleBytesService;
  beforeEach(() => {
    svc = {
      format: sinon.stub().returns({
        result: 100,
        scale: 2,
        unit: 'KiB'
      }),
      metricToBigInt: null,
      sizes: ['B', 'KiB', 'MiB', 'GiB', 'TiB', 'PiB', 'EiB', 'ZiB', 'YiB'],
    };
    pipe = new FormatBytesPipe(svc);
  });

  it('should delegate to service', () => {
    svc.format.should.not.be.called();
    pipe.transform({ $numberLong: '2' }).should.equal('100 KiB');
    svc.format.should.be.calledOnce();
    svc.format.should.be.calledWithMatch({ $numberLong: '2' });
  });

});