TestCase := Rectangle {
    Path {
        LineTo { x: 100; y: 0; }
        LineTo { x: 100; y: 0; }
        LineTo { x: 100; y: 0; }
        Rectangle {}
//      ^error{Rectangle is not allowed within Path. Only ArcTo Close LineTo are valid children}
    }

    LineTo { x: 100; y: 0; }
//  ^error{LineTo can only be within the following elements: Path, PathLayout}
}