test even moving of cow_shared_ptrs

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() {