Not able to execute rp(Options) within a function

[DebashishSamanta]

I am using Request-promise for my Protractor-TypeScript API Testing. But after repeated trials also I am unable to get response from API.

Class File: To execute the API

---

var rp = require('request-promise');

export class Apitesting {

public APIRequest;

constructor(){

    this.APIRequest = function() {

        console.log("Starting.....");

        var options = { method: 'GET',
        url: 'http://www.vanguard.com.au/',
        headers: 
         { 'Postman-Token': '3e7eeab8-aff5-4d86-ba36-e52ada393846',
           'cache-control': 'no-cache' },
           json: true
         };

        rp(options).then(function (repos) {
        console.log('User has %d repos', repos.length);
        }).catch(function (err) {
        // API call failed...
        });

    }
}

}

Calling this Function from Spec file Prints the console console.log("Starting.....");

But does not call rp(options).

Spec File:

---

import {Apitesting} from "../utils/api";

describe("Validate the Broken Links",()=> { const api:Apitesting = new Apitesting();

it("Validate the List of Links and and if they are broken",(done)=> {

try {
    api.APIRequest();

done();
}catch(e) {
    console.log(e);
}

});

});

Response: