public void CheckQuadrilateralCornersTest( )
{
List<IntPoint> corners;
Assert.AreEqual( true, shapeChecker.IsQuadrilateral( square1, out corners ) );
Assert.AreEqual( 4, corners.Count );
Assert.AreEqual( true, CompareShape( corners, square1Test ) );
Assert.AreEqual( true, shapeChecker.IsQuadrilateral( square2, out corners ) );
Assert.AreEqual( 4, corners.Count );
Assert.AreEqual( true, CompareShape( corners, square2Test ) );
}