test_case.php

<?php

namespace Tests\Browser;

use Tests\DuskTestCase;
use Laravel\Dusk\Browser;
use Illuminate\Foundation\Testing\DatabaseMigrations;

class ExampleTest extends DuskTestCase
{
    /**
     * A basic browser test example.
     *
     * @return void
     */
    public function testPayment()
    {
        $this->browse(function (Browser $browser) {
            $browser->visit('/pay')
                    ->press('Pay Now')
                    ->waitFor('iframe[class=razorpay-checkout-frame]')
                    ->assertSee('Test');

            $browser->driver->switchTo()->frame('body > div > iframe');

            $browser->assertSee('Vendor');
        });
    }
}