diff --git a/Tests/MockObjectTest.php b/Tests/MockObjectTest.php
index 302822bf..3745c76f 100644
--- a/Tests/MockObjectTest.php
+++ b/Tests/MockObjectTest.php
@@ -334,6 +334,26 @@ public function testMockObjectsConstructedIndepentantlyShouldNotEqual()
         $this->assertNotEquals($a,$b);
     }
 
+    public function testClonedMockObjectCanBeUsedInPlaceOfOriginalOne()
+    {
+        $x = $this->getMock('stdClass');
+        $y = clone $x;
+
+        $mock = $this->getMock('stdClass', array('foo'));
+        $mock->expects($this->once())->method('foo')->with($this->equalTo($x));
+        $mock->foo($y);
+    }
+
+    public function testClonedMockObjectIsNotIdenticalToOriginalOne()
+    {
+        $x = $this->getMock('stdClass');
+        $y = clone $x;
+
+        $mock = $this->getMock('stdClass', array('foo'));
+        $mock->expects($this->once())->method('foo')->with($this->logicalNot($this->identicalTo($x)));
+        $mock->foo($y);
+    }
+
     public function testStaticMethodCallWithArgumentCloningEnabled()
     {
         $expectedObject = new StdClass;