TypeError: expect(...).to.startsWith is not a function - chai and chakram

I started writing some automation tests(API)

Now I tried to do to this endpoint:

so I added into my function

expect(response.body.message).to.startsWith('https://images.dog.ceo/breeds/');

and at the beginning of the test:

    var chakram = require('chakram');
var chai = require('chai');  
chai.use(require('chai-string'))
expect = chai.expect;    // Using Expect style
expect = chakram.expect;

Earlier I did not have any problems but with this "expect starts..." after running test I got: TypeError: expect(...).to.startsWith is not a function - chai and chakram

Can anyone help me?

thanks

Solution

You don't need chai-string you can just do:

expect(response.body.message).to.be.a('string').and.satisfy(msg => msg.startsWith('https://images.dog.ceo/breeds/'));

Can even do regex in that satisfy.

Or better then this, just use match:

const { escapeRegExp } = require('lodash');
expect(response.body.message).to.be.a('string').and.match(/^https:\/\/images\.dog\.ceo\/breeds\//i);
expect(response.body.message).to.be.a('string').and.match(new RegExp('^' + escapeRegExp('https://images.dog.ceo/breeds/'), 'i')); // this is preferred way so you don't have to worry about escaping, rely on lodash method to escape