MAGETWO-33654: Unable to save newsletter subscription information of customer in backend

Author: slopok

app/code/Magento/Customer/Test/Unit/Block/Adminhtml/Edit/Tab/NewsletterTest.php

@@ -51,7 +51,7 @@ public function setUp()
         $this->formFactoryMock = $this->getMock('\Magento\Framework\Data\FormFactory', [], [], '', false);
         $this->subscriberFactoryMock = $this->getMock(
             '\Magento\Newsletter\Model\SubscriberFactory',
-            [],
+            ['create'],
             [],
             '',
             false

app/code/Magento/Customer/Test/Unit/Controller/Adminhtml/Index/SaveTest.php

@@ -333,7 +333,6 @@ public function testExecuteWithExistentCustomerAndNoAddresses()
 
         $this->customerDataFactoryMock->expects($this->once())
             ->method('create')
-            ->with([])
             ->willReturn($customerMock);
 
         $this->customerRepositoryMock->expects($this->once())
@@ -503,7 +502,6 @@ public function testExecuteWithNewCustomerAndNoAddresses()
 
         $this->customerDataFactoryMock->expects($this->once())
             ->method('create')
-            ->with([])
             ->willReturn($customerMock);
 
         $this->managementMock->expects($this->once())
@@ -560,13 +558,12 @@ public function testExecuteWithNewCustomerAndNoAddresses()
 
         $this->redirectFactoryMock->expects($this->once())
             ->method('create')
-            ->with([])
             ->willReturn($redirectMock);
 
         $redirectMock->expects($this->once())
             ->method('setPath')
             ->with('customer/index', [])
-            ->willReturn(true);
+            ->willReturnSelf();
 
         $this->assertEquals($redirectMock, $this->model->execute());
     }
@@ -660,7 +657,6 @@ public function testExecuteWithNewCustomerAndValidationException()
 
         $this->customerDataFactoryMock->expects($this->once())
             ->method('create')
-            ->with([])
             ->willReturn($customerMock);
 
         $this->managementMock->expects($this->once())
@@ -801,7 +797,6 @@ public function testExecuteWithNewCustomerAndLocalizedException()
 
         $this->customerDataFactoryMock->expects($this->once())
             ->method('create')
-            ->with([])
             ->willReturn($customerMock);
 
         $this->managementMock->expects($this->once())
@@ -942,7 +937,6 @@ public function testExecuteWithNewCustomerAndException()
 
         $this->customerDataFactoryMock->expects($this->once())
             ->method('create')
-            ->with([])
             ->willReturn($customerMock);
 
         $exception = new \Exception(__('Exception'));