diff --git a/alib2std/test-src/extensions/SharedPtrTest.cpp b/alib2std/test-src/extensions/SharedPtrTest.cpp
index 0f590b327cdaa1326d6f18542638b0be4d9a6e0d..9d5b90c7b6692b5fd03fa894815bd156e29a3f36 100644
--- a/alib2std/test-src/extensions/SharedPtrTest.cpp
+++ b/alib2std/test-src/extensions/SharedPtrTest.cpp
@@ -28,16 +28,21 @@ void SharedPtrTest::testSharedPtr1() {
 
 	std::make_const(two).get();
 
+	std::cow_shared_ptr<SharedPtrTest::Moveable> three(std::move ( two ) );
+
+	std::make_const(three).get();
+
 	CPPUNIT_ASSERT(!one.unique());
 	CPPUNIT_ASSERT(moves == 0);
 	CPPUNIT_ASSERT(copies == 0);
 
+	two = std::move ( three ) ;
+
 	two.get();
 
 	CPPUNIT_ASSERT(one.unique());
 	CPPUNIT_ASSERT(moves == 0);
 	CPPUNIT_ASSERT(copies == 1);
-
 }
 
 void SharedPtrTest::testSharedPtr2() {
@@ -58,16 +63,21 @@ void SharedPtrTest::testSharedPtr2() {
 
 	std::make_const(two).get();
 
+	std::cow_shared_ptr<SharedPtrTest::Moveable2> three(std::move ( two ) );
+
+	std::make_const(three).get();
+
 	CPPUNIT_ASSERT(!one.unique());
 	CPPUNIT_ASSERT(moves == 0);
 	CPPUNIT_ASSERT(copies == 0);
 
+	two = std::move ( three ) ;
+
 	two.get();
 
 	CPPUNIT_ASSERT(one.unique());
 	CPPUNIT_ASSERT(moves == 0);
 	CPPUNIT_ASSERT(copies == 1);
-
 }
 
 void SharedPtrTest::testSharedPtr3() {