preValidate example

'code' => ' ',
            ],
            ['id' => 'D1'],
            $this->createMock(EntityExistence::class),
            '/0'
        );

        $fakeConnection = new FakeConnection($this->getPromotionDbRows());

        $event = new PreWriteValidationEvent($this->context, $commands);
        $validator = new PromotionValidator($fakeConnection);
        $validator->preValidate($event);

        try {
            $event->getExceptions()->tryToThrow();
            static::fail('Validation with invalid until was not triggered.');
        } catch (WriteException $e) {
            static::assertCount(1, $e->getExceptions());

            $firstException = $e->getExceptions()[0];
            static::assertInstanceOf(WriteConstraintViolationException::class, $firstException);

            $violation = $firstException->getViolations()->get(0);

            

            ],
            ['id' => 'D1'],
            $this->createMock(EntityExistence::class),
            '/0/'
        );

        $fakeConnection = new FakeConnection([]);

        $event = new PreWriteValidationEvent($this->context, $commands);
        $validator = new ShippingMethodValidator($fakeConnection);
        $validator->preValidate($event);

        $exception = null;

        try {
            $event->getExceptions()->tryToThrow();
        } catch (WriteException $e) {
            $exception = $e;
        }

        if (!$success) {
            static::assertNotNull($exception);