checker = \Magento\TestFramework\Helper\Bootstrap::getObjectManager()->create( \Magento\Sales\Model\OrderIncrementIdChecker::class ); } /** * Test to verify if isIncrementIdUsed method works with numeric increment ids. * * @magentoDataFixture Magento/Sales/_files/order.php * @return void */ public function testIsOrderIncrementIdUsedNumericIncrementId(): void { $this->assertTrue($this->checker->isIncrementIdUsed('100000001')); } /** * Test to verify if isIncrementIdUsed method works with alphanumeric increment ids. * * @magentoDataFixture Magento/Sales/_files/order_alphanumeric_id.php * @return void */ public function testIsOrderIncrementIdUsedAlphanumericIncrementId(): void { $this->assertTrue($this->checker->isIncrementIdUsed('M00000001')); } }