laravel - Phpunit acceptance test not finding redirect url -

i trying write functional acceptance test facebook login integration in laravel using socalite.

this works manually.

if try following code

public function test_facebook_login() {    $this->visit('/')->click('login facebook'); } 

then error(ihave removed api key , secret)

1) authenticationtest::test_facebook_login request [https://www.facebook.com/v2.6/dialog/oauth?client_id=[clientid]&redirect_uri=https%3a%2f%2fcore-domain%2ffacebook%2fcallback&scope=email&response_type=code&state=code] failed. received status code [404].

if copy url , go manually in browser works , can log in fb