Promise.then不在Jasmine中执行

Question

JavaScript - Jasmine test framework question

Hi guys, for some reason, helpers.getWeatherData returns a promise but I can't manage to resolve it with the .then

Can't find to much documentation on this either.

Help would be amazing!

import Jasmine from 'jasmine'
const jasmine = new Jasmine()
jasmine.loadConfigFile('spec/support/jasmine.json')
import helpers from '../src/lib/helpers'
import fetch from 'node-fetch'
import Promise from 'bluebird'

describe("Weather Service App", function() {
      const URL = `http://api.openweathermap.org/data/2.5/forecast?`;

      beforeEach(function(){
          console.log('hello')
          helpers.getWeatherData(URL).then((arr)=>{
          console.log(arr.length, 'length')
        })
      })

      console.log(helpers.getWeatherData(URL))

  it("Test API endpoint, return array of five objects", function() {

  });

});

jasmine.execute()

Answer 1

The problem may be that the beforeEach funciton requires done as a parameter when doing things asynchronously.

It would run the beforeEach function without waiting for the promise to fully execute.

To fix, you could try this:

  beforeEach(function(done) {
      console.log('hello');
      helpers.getWeatherData(URL).then((arr) => {
        console.log(arr.length, 'length');
        done();
      })
  })

See https://jasmine.github.io/2.4/introduction.html#section-Asynchronous_Support