fix test: added mock ClassMetaData object

Author: ychadwick

Tests/EventListener/PageListenerTest.php

@@ -99,10 +99,18 @@ public function testPostPersist_WithPage()
                 ->disableOriginalConstructor()
         	    ->getMock();
 
-        $em->expects($this->oncde())
+        $em->expects($this->once())
             ->method('getUnitOfWork')
             ->will($this->returnValue($uow));
 
+        $classMetaData = $this->getMockBuilder('\Doctrine\ORM\Mapping\ClassMetadata')
+            ->disableOriginalConstructor()
+    	    ->getMock();
+
+        $em->expects($this->once())
+            ->method('getClassMetadata')
+            ->will($this->returnValue($classMetaData));
+
 
 		$em->expects($this->once())
 				->method('persist');
@@ -204,7 +212,7 @@ public function testPostUpdate_WithPage(){
                 ->disableOriginalConstructor()
         	    ->getMock();
 
-        $em->expects($this->oncde())
+        $em->expects($this->once())
             ->method('getUnitOfWork')
             ->will($this->returnValue($uow));
 
@@ -261,7 +269,7 @@ public function testPostUpdate_WithPageAndTenChildren(){
                 ->disableOriginalConstructor()
         	    ->getMock();
 
-        $em->expects($this->oncde())
+        $em->expects($this->once())
             ->method('getUnitOfWork')
             ->will($this->returnValue($uow));