ACP2E-2125: adjusted email validator condition

Author: alzota

app/code/Magento/Sales/Model/Order/Address/Validator.php

@@ -104,7 +104,7 @@ public function validate(Address $address)
 
         $email = $address->getEmail();
 
-        if (empty($email) || $this->emailAddressValidator->isValid($email)) {
+        if (empty($email) || !$this->emailAddressValidator->isValid($email)) {
             $warnings[] = 'Email has a wrong format';
         }
 

app/code/Magento/Sales/Test/Unit/Model/Order/Address/ValidatorTest.php

@@ -95,7 +95,7 @@ public function testValidate($addressData, $email, $addressType, $expectedWarnin
         $this->emailValidatorMock->expects($this->once())
             ->method('isValid')
             ->with($email)
-            ->willReturn((stripos($email, '@') === false));
+            ->willReturn((stripos($email, '@') !== false));
         $actualWarnings = $this->validator->validate($this->addressMock);
         $this->assertEquals($expectedWarnings, $actualWarnings);
     }