Adding assertHasOption and assertHasOptions

[lasselehtinen]

It would be very nice to have an assert if the dropdown menu contains given value(s). For example:

->assertHasOption('@countries', 'Finland');
->assertHasOptions('@countries', ['Finland', 'Sweden]);

I tried to look to the Facebook Webdriver API to make a PR but it went little bit over my head. Maybe somebody more capable would like to implement this?

[splatEric]

you can implement additional assertions as macros ... I wrote up an example of it here: https://medium.com/@splatEric/writing-tests-with-laravel-dusk-bb755c0dcb1f#.5hj9en9b8

I would imagine the intention is to avoid proliferating too many additional assertions in the core, but I could be wrong ...