相关疑难解决方法(0)

以下测试表现得很奇怪:

it('Should return the exchange rates for btc_ltc', function(done) {
    var pair = 'btc_ltc';

    shapeshift.getRate(pair)
        .then(function(data){
            expect(data.pair).to.equal(pair);
            expect(data.rate).to.have.length(400);
            done();
        })
        .catch(function(err){
            //this should really be `.catch` for a failed request, but
            //instead it looks like chai is picking this up when a test fails
            done(err);
        })
});

我该如何妥善处理被拒绝的承诺(并对其进行测试)？

我该如何正确处理失败的测试(即:expect(data.rate).to.have.length(400);？

这是我正在测试的实现:

var requestp = require('request-promise');
var shapeshift = module.exports = {};
var url = 'http://shapeshift.io';

shapeshift.getRate = function(pair){
    return requestp({
        url: url + '/rate/' + pair,
        json: true
    }); …