public function testUnsubscribeCustomerById()
{
$customerId = 1;
$customerDataMock = $this->getMockBuilder('\\Magento\\Customer\\Api\\Data\\CustomerInterface')->getMock();
$this->customerRepository->expects($this->atLeastOnce())->method('getById')->with($customerId)->willReturn($customerDataMock);
$this->resource->expects($this->atLeastOnce())->method('loadByCustomerData')->with($customerDataMock)->willReturn(['subscriber_id' => 1, 'subscriber_status' => 1]);
$customerDataMock->expects($this->atLeastOnce())->method('getId')->willReturn('id');
$this->resource->expects($this->atLeastOnce())->method('save')->willReturnSelf();
$customerDataMock->expects($this->once())->method('getStoreId')->willReturn('store_id');
$customerDataMock->expects($this->once())->method('getEmail')->willReturn('email');
$this->sendEmailCheck();
$this->subscriber->unsubscribeCustomerById($customerId);
}
