MAGETWO-49518: Fax can't be saved in Customer Account on Storefront

Author: Oleksandr Karpenko

app/code/Magento/Customer/Helper/Address.php

@@ -373,4 +373,19 @@ public function isVatAttributeVisible()
             \Magento\Store\Model\ScopeInterface::SCOPE_STORE
         );
     }
+
+    /**
+     * Retrieve attribute visibility
+     *
+     * @param string $code
+     * @return bool
+     */
+    public function isAttributeVisible($code)
+    {
+        $attributeMetadata = $this->_addressMetadataService->getAttributeMetadata($code);
+        if ($attributeMetadata) {
+            return $attributeMetadata->isVisible();
+        }
+        return false;
+    }
 }

app/code/Magento/Customer/Test/Unit/Helper/AddressTest.php

@@ -372,4 +372,34 @@ public function getFormatDataProvider()
             ['invalid_code', '']
         ];
     }
+
+    /**
+     * @param string $attributeCode
+     * @param bool $isMetadataExists
+     * @dataProvider isAttributeVisibleDataProvider
+     */
+    public function testIsAttributeVisible($attributeCode, $isMetadataExists)
+    {
+        $attributeMetadata = null;
+        if ($isMetadataExists) {
+            $attributeMetadata = $this->getMockBuilder(\Magento\Customer\Api\Data\AttributeMetadataInterface::class)
+                ->getMockForAbstractClass();
+            $attributeMetadata->expects($this->once())
+                ->method('isVisible')
+                ->willReturn(true);
+        }
+        $this->addressMetadataService->expects($this->once())
+            ->method('getAttributeMetadata')
+            ->with($attributeCode)
+            ->willReturn($attributeMetadata);
+        $this->assertEquals($isMetadataExists, $this->helper->isAttributeVisible($attributeCode));
+    }
+
+    public function isAttributeVisibleDataProvider()
+    {
+        return [
+            ['fax', true],
+            ['invalid_code', false]
+        ];
+    }
 }