node.js - Return JavaScript Promise rejected fulfilled value -

i'm trying use node-geocoder npm package latitude , longitude of position objects.

could me please understand javascript promises.

here example code:

import nodegeocoder 'node-geocoder'  function getlocation (str) {     // selecting google provider     const geocoder = nodegeocoder({         provider: 'google',     })      return geocoder.geocode(str)         .then(response => {             // want return latitude longitude             return [response[0].latitude, response[0].longitude]         })         .catch(error => {             console.log(`geocoder error: ${ error }`)         }) }  export default getlocation 

so. test (jest framework):

import getlocation './index'  test('checking', () => {     expect(getlocation('29 champs elysée paris')).toequal([48.8698679, 2.3072976]) }) 

when i'm trying use test promise status {"fulfillmentvalue": undefined, "isfulfilled": false, "isrejected": false, "rejectionreason": undefined}.

but need promise resolved result. how can it?

i don't want edit test

for testing, test suites offer async callback promise based tests. expect (pun intended) work this:

import getlocation './index'  test('checking', (done) => {   getlocation('29 champs elysée paris').then(geodata => {     expect(geodata).toequal([48.8698679, 2.3072976]);     done();   }).catch(error => {     done(error)   }); }); 

depending on testing framework might using, way call resolver callback (i.e: done()) can change. however, pattern should more or less same.