小编sen*_*dra的帖子

我有摩卡,sinon和柴的测试服:

describe('general visor methods tests', () => {

    let res, req, next, resSpy, resNext;

    beforeEach(() => {
        res = {};
        next = () => {};
        resSpy = res.json = sinon.spy();
        resNext = next = sinon.spy();
    });
    afterEach(() => {
        resSpy.restore();
        resNext.reset();
    });


describe('get basemap layers from owner model', () => {
    it('should send the basemap provided by the owner model', () => {
        owner.basemap = ['basemap1', 'basemap2'];
        getBaseMapLayersFromConfig(req, res, next);
        //  console.log(resSpy.args[0][0].data);
        expect(resSpy.calledOnce).to.eql(true);
        expect(resSpy.args[0][0].message).to.eql('basemaps correctly found');
        expect(resSpy.args[0][0].data).to.eql(['basemap1', 'basemap2']);
    });

... …

我不知道如何访问参数x-error-detail-header.

我使用node-fetch npm包从请求中收到此响应头:

     Headers {
      [Symbol(map)]: 
  { 'content-type': [ 'text/xml' ],
 date: [ 'Fri, 27 Apr 2018 09:46:56 GMT' ],
 'retry-after': [ '51184' ],
 server: [ 'xxxxx' ],
 'x-error-detail-header': [ 'Account Over Rate Limit' ],
 'x-x-error-code': [ 'ERR_403_DEVELOPER_OVER_RATE' ],
 'x-x-responder': [ 'xxxxxxx.com' ],
 'x-plan-qps-allotted': [ '2' ],
 'x-plan-qps-current': [ '1' ],
 'x-plan-quota-allotted': [ '50' ],
 'x-plan-quota-current': [ '51' ],
 'x-plan-quota-reset': [ 'Saturday, April 28, 2018 12:00:00 AM GMT' ],
 'content-length': [ '28' ],
 connection: [ 'Close' ] } }

我的问题是我不知道如何访问[Symbol(map)]对象内的参数.