fn test_complex_map_op1() {
    mut test_map := map[string]Point_map{}

    test_map['test1'] = Point_map{
        points: {
            'point3': []Point{}
        }
    }
    test_map['test2'] = Point_map{
        points: {
            'point4': []Point{}
        }
    }
    test_map['test1'].points['point3'] << Point{10, 20}
    test_map['test2'].points['point4'] << Point{50, 60}

    println(test_map)

    assert test_map.len == 2
    assert Point{10, 20} in test_map['test1'].points['point3']
    assert Point{50, 60} in test_map['test2'].points['point4']
    assert Point{10, 20} !in test_map['test2'].points['point4']
    assert Point{1, 2} !in test_map['test1'].points['point3']
}

fn test_complex_map_op2() {
    mut test_map := map[string]map[string][]Point{}

    test_map['test1'] = {
        'point3': []Point{}
    }
    test_map['test2'] = {
        'point4': []Point{}
    }
    test_map['test1']['point3'] << Point{10, 20}
    test_map['test2']['point4'] << Point{50, 60}

    println(test_map)

    assert test_map.len == 2
    assert Point{10, 20} in test_map['test1']['point3']
    assert Point{50, 60} in test_map['test2']['point4']
    assert Point{10, 20} !in test_map['test2']['point4']
    assert Point{1, 2} !in test_map['test1']['point3']
}

struct Point {
mut:
    x int
    y int
}

struct Point_map {
mut:
    points map[string][]Point
}