1#[test]
2fn flex_grow_within_constrained_max_width() {
3 use slotmap::Key;
4 #[allow(unused_imports)]
5 use taffy::{layout::Layout, prelude::*};
6 let mut taffy = taffy::Taffy::new();
7 let node00 = taffy
8 .new_leaf(taffy::style::Style {
9 flex_grow: 1f32,
10 size: taffy::geometry::Size { width: auto(), height: taffy::style::Dimension::Points(20f32) },
11 ..Default::default()
12 })
13 .unwrap();
14 let node0 = taffy
15 .new_with_children(
16 taffy::style::Style {
17 max_size: taffy::geometry::Size { width: taffy::style::Dimension::Points(300f32), height: auto() },
18 ..Default::default()
19 },
20 &[node00],
21 )
22 .unwrap();
23 let node = taffy
24 .new_with_children(
25 taffy::style::Style {
26 flex_direction: taffy::style::FlexDirection::Column,
27 size: taffy::geometry::Size {
28 width: taffy::style::Dimension::Points(200f32),
29 height: taffy::style::Dimension::Points(100f32),
30 },
31 ..Default::default()
32 },
33 &[node0],
34 )
35 .unwrap();
36 taffy.compute_layout(node, taffy::geometry::Size::MAX_CONTENT).unwrap();
37 println!("\nComputed tree:");
38 taffy::debug::print_tree(&taffy, node);
39 println!();
40 let Layout { size, location, .. } = taffy.layout(node).unwrap();
41 assert_eq!(size.width, 200f32, "width of node {:?}. Expected {}. Actual {}", node.data(), 200f32, size.width);
42 assert_eq!(size.height, 100f32, "height of node {:?}. Expected {}. Actual {}", node.data(), 100f32, size.height);
43 assert_eq!(location.x, 0f32, "x of node {:?}. Expected {}. Actual {}", node.data(), 0f32, location.x);
44 assert_eq!(location.y, 0f32, "y of node {:?}. Expected {}. Actual {}", node.data(), 0f32, location.y);
45 let Layout { size, location, .. } = taffy.layout(node0).unwrap();
46 assert_eq!(size.width, 200f32, "width of node {:?}. Expected {}. Actual {}", node0.data(), 200f32, size.width);
47 assert_eq!(size.height, 20f32, "height of node {:?}. Expected {}. Actual {}", node0.data(), 20f32, size.height);
48 assert_eq!(location.x, 0f32, "x of node {:?}. Expected {}. Actual {}", node0.data(), 0f32, location.x);
49 assert_eq!(location.y, 0f32, "y of node {:?}. Expected {}. Actual {}", node0.data(), 0f32, location.y);
50 let Layout { size, location, .. } = taffy.layout(node00).unwrap();
51 assert_eq!(size.width, 200f32, "width of node {:?}. Expected {}. Actual {}", node00.data(), 200f32, size.width);
52 assert_eq!(size.height, 20f32, "height of node {:?}. Expected {}. Actual {}", node00.data(), 20f32, size.height);
53 assert_eq!(location.x, 0f32, "x of node {:?}. Expected {}. Actual {}", node00.data(), 0f32, location.x);
54 assert_eq!(location.y, 0f32, "y of node {:?}. Expected {}. Actual {}", node00.data(), 0f32, location.y);
55}