Tests to ensure translator is only called once

Translator should only be called once on the element label. These tests make sure this is true whether or not the element has a label.

Author: terpfear

test/View/Helper/FormRowTest.php

@@ -248,6 +248,45 @@ public function testTranslatorMethods()
         $this->assertFalse($this->helper->isTranslatorEnabled());
     }
 
+    public function testLabelWillBeTranslatedOnceWithoutId()
+    {
+        $element = new Element('foo');
+        $element->setLabel('The value for foo:');
+
+        $mockTranslator = $this->getMock('Zend\I18n\Translator\Translator');
+        $mockTranslator->expects($this->exactly(1))
+            ->method('translate')
+            ->will($this->returnValue('translated content'));
+
+        $this->helper->setTranslator($mockTranslator);
+        $this->assertTrue($this->helper->hasTranslator());
+
+        $markup = $this->helper->__invoke($element);
+        $this->assertContains('>translated content<', $markup);
+        $this->assertContains('<label', $markup);
+        $this->assertContains('</label>', $markup);
+    }
+
+    public function testLabelWillBeTranslatedOnceWithId()
+    {
+        $element = new Element('foo');
+        $element->setLabel('The value for foo:');
+        $element->setAttribute('id', 'foo');
+
+        $mockTranslator = $this->getMock('Zend\I18n\Translator\Translator');
+        $mockTranslator->expects($this->exactly(1))
+            ->method('translate')
+            ->will($this->returnValue('translated content'));
+
+        $this->helper->setTranslator($mockTranslator);
+        $this->assertTrue($this->helper->hasTranslator());
+
+        $markup = $this->helper->__invoke($element);
+        $this->assertContains('>translated content<', $markup);
+        $this->assertContains('<label', $markup);
+        $this->assertContains('</label>', $markup);
+    }
+    
     public function testSetLabelPositionInputNullRaisesException()
     {
         $this->setExpectedException('Zend\Form\Exception\InvalidArgumentException');