codegenerator = $objectManager->getObject(\Magento\SalesRule\Model\Coupon\Codegenerator::class); } /** * Run test generateCode method */ public function testGenerateCode() { $this->assertNotEmpty($this->codegenerator->generateCode()); } /** * Run test getDelimiter method */ public function testGetDelimiter() { $this->assertNotEmpty($this->codegenerator->getDelimiter()); } }