Testing

Qr::fake() swaps writing for recording. Codes are still encoded and drawn, so content too long or a style the guards refuse fails as it would for real, but no file is written and no image extension is needed.

use ExeQue\Qr\Builders\PendingQr;
use ExeQue\Qr\Facades\Qr;

it('shows the ticket code', function () {
    Qr::fake();

    $this->get(route('tickets.show', $ticket))->assertOk();

    Qr::assertRendered(fn (PendingQr $qr) => $qr->content === $ticket->url);
    Qr::assertRendered(fn (PendingQr $qr, string $format) => $format === 'png');
    Qr::assertRenderedCount(1);
});

Assertion
assertRendered(?Closure $callback)	a code was rendered; the callback gets the code and the format
assertNotRendered(?Closure $callback)	no code matching was rendered
assertRenderedCount(int $count, ?Closure $callback)	how many were rendered, optionally only matching ones
assertNothingRendered()	none at all

Qr::fake() returns the fake, which has the same assertions and rendered(), the codes and formats recorded.

What the fake gives back

Code that renders a code still gets an output of the right type: SVG, PNG, JPEG and WebP are served as a ready-made, scannable code reading qr-fake, 256 pixels wide in the raster formats. Faked codes are never cached.

Writers of your own write for real under the fake, unless they implement ExeQue\Qr\Writers\Contracts\Fakeable and give an output from fake(); see Extending.

Checking a code scans

Qr::read() reads codes in tests too:

expect(Qr::read(Qr::url($url)->style('brand')->png(600))->text)->toBe($url);