Laravel Dusk: Support Mock API Responses

[shivaRamdeen]

As a dusk user I would like the ability to listen for api requests and mock responses during automated tests.

This is particularly helpful where a feature relies on an external service that we do not wish to hit during testing.

A potential use would look like this:

$this->browse(function (Browser $browser) {
            $browser->visit('/search')
                    ->assertSee('Search For Something')
                    ->type('input', 'my query')
                   ->onRequest("POST|GET|PUT|DELETE", "/api/search", $mockJsonResponse)
                    ->press('Search')
                    ->waitForText('Results')
                    ->assertSee('Some Mock Resposne Data');
        });

If this is not something supported yet (I don't think it is), I would be willing to implement although an implementation disucussion would be helpful.