CPPUNIT_ASSERT( s3.GetWidth()==2 && s3.GetHeight()==2 );
s3 = s1 * 2;
CPPUNIT_ASSERT( s3.GetWidth()==2 && s3.GetHeight()==4 );
CPPUNIT_ASSERT( s3.GetWidth()==2 && s3.GetHeight()==2 );
s3 = s1 * 2;
CPPUNIT_ASSERT( s3.GetWidth()==2 && s3.GetHeight()==4 );