PHP code example of rasuvaeff / understudy-phpunit

    
        
<?php
require_once('vendor/autoload.php');

/* Start to develop here. Best regards https://php-download.com/ */

    

rasuvaeff / understudy-phpunit example snippets

use function Rasuvaeff\Understudy\expect;
use function Rasuvaeff\Understudy\when;

use PHPUnit\Framework\TestCase;
use Rasuvaeff\Understudy\PhpUnit\UnderstudyPHPUnitIntegration;
use Rasuvaeff\Understudy\Understudy;

final class CheckoutTest extends TestCase
{
    use UnderstudyPHPUnitIntegration;

    public function testChargesForTheCart(): void
    {
        $books = Understudy::for(BookRepositoryInterface::class);
        expect(fn () => $books->find(7))->returns($expected = new Book(7));

        $receipt = (new Checkout($books))->charge([7]);

        self::assertSame($expected->price, $receipt->total);
    }
}

abstract class ProjectTestCase extends TestCase
{
    use UnderstudyPHPUnitIntegration;

    protected function understudyStrictStubs(): bool
    {
        return true;
    }
}

use Rasuvaeff\Understudy\PhpUnit\UnderstudyPHPUnitIntegration {
    UnderstudyPHPUnitIntegration::assertPostConditions as understudyAssertPostConditions;
}

protected function assertPostConditions(): void
{
    // your post-conditions ...
    $this->understudyAssertPostConditions();
}

use function Rasuvaeff\Understudy\expect as expectCall;
use function Rasuvaeff\Understudy\verify as verifyCall;
use function Rasuvaeff\Understudy\when;

uses(UnderstudyPHPUnitIntegration::class)->in(__DIR__);

it('charges for the cart', function () {
    $books = Understudy::for(BookRepositoryInterface::class);
    expectCall(fn () => $books->find(7))->returns(new Book(7));   // one registration

    (new Checkout($books))->charge([7]);
});

it('reads the call back afterwards', function () {
    $books = Understudy::for(BookRepositoryInterface::class);
    when(fn () => $books->find(7))->returns(new Book(7));

    (new Checkout($books))->charge([7]);

    verifyCall(fn () => $books->find(7));      // after the action
});