Mock Stripe in a Test

UserSubscriptionRepositoryTest.php

<?php

namespace Tests\Unit;

use Illuminate\Foundation\Testing\TestCase;
use Illuminate\Foundation\Testing\RefreshDatabase;

class UserSubscriptionRepositoryTest extends TestCase
{
    use CreatesApplication, RefreshDatabase;
  
    protected $stripeAccountRepository;

    protected function setUp(): void
    {
        parent::setUp();
        
        $this->mockStripe();

        $this->stripeAccountRepository = $this->app->make(StripeAccountRepository::class);
    }
  

    public function mockStripe()
    {
        $this->mock(Stripe::class, function ($mock) {
            $mock->shouldReceive('setApiKey');
        });

        $this->mock(Customer::class, function ($mock) {
            $mock->shouldReceive('create')->andReturn([
                'id' => 'test_stripe_customer_id'
            ]);
        });

    }
  
    /** @test */
    public function it_correctly_returns_an_new_stripe_account()
    {        
        $user = factory(User::class)->create();
        $location = factory(Location::class)->create();

        $stripe_account = $this->stripeAccountRepository->createCustomer([$user, $location]);

        $this->assertEquals('test_stripe_customer_id', $stripe_account['id']);
    }

}