Incorporated feedback

- Imported `TranslatorInterface` from zend-i18n
- Used `::class` notation for new mock instances

Did not assert the entierty of the markup, as we're literally only
interested in whether or not the translation string and surrounding
markup are present for purposes of this test.

Author: weierophinney

test/View/Helper/FormRowTest.php

@@ -10,6 +10,7 @@
 namespace ZendTest\Form\View\Helper;
 
 use PHPUnit_Framework_TestCase as TestCase;
+use Zend\I18n\Translator\TranslatorInterface;
 use Zend\Form\Element;
 use Zend\Form\Element\Captcha;
 use Zend\Form\View\HelperConfig;
@@ -253,7 +254,7 @@ public function testLabelWillBeTranslatedOnceWithoutId()
         $element = new Element('foo');
         $element->setLabel('The value for foo:');
 
-        $mockTranslator = $this->getMock('Zend\I18n\Translator\Translator');
+        $mockTranslator = $this->getMock(TranslatorInterface::class);
         $mockTranslator->expects($this->exactly(1))
             ->method('translate')
             ->will($this->returnValue('translated content'));
@@ -273,7 +274,7 @@ public function testLabelWillBeTranslatedOnceWithId()
         $element->setLabel('The value for foo:');
         $element->setAttribute('id', 'foo');
 
-        $mockTranslator = $this->getMock('Zend\I18n\Translator\Translator');
+        $mockTranslator = $this->getMock(TranslatorInterface::class);
         $mockTranslator->expects($this->exactly(1))
             ->method('translate')
             ->will($this->returnValue('translated content'));