/**
  * @magentoDataFixture Magento/Customer/_files/inactive_customer.php
  * @magentoAppArea frontend
  * @expectedException \Magento\Framework\Exception\State\InvalidTransitionException
  */
 public function testActivateCustomerAlreadyActive()
 {
     /** @var \Magento\Customer\Model\Customer $customerModel */
     $customerModel = $this->_objectManager->create('Magento\\Customer\\Model\\Customer');
     $customerModel->load(1);
     $key = $customerModel->getConfirmation();
     $this->_customerAccountService->activateCustomer($customerModel->getId(), $key);
     // activate it one more time to produce an exception
     $this->_customerAccountService->activateCustomer($customerModel->getId(), $key);
 }