1#[test]
2fn gap_column_gap_determines_parent_width() {
3 use slotmap::Key;
4 #[allow(unused_imports)]
5 use taffy::{layout::Layout, prelude::*};
6 let mut taffy = taffy::Taffy::new();
7 let node0 = taffy
8 .new_leaf(taffy::style::Style {
9 size: taffy::geometry::Size { width: taffy::style::Dimension::Points(10f32), height: auto() },
10 ..Default::default()
11 })
12 .unwrap();
13 let node1 = taffy
14 .new_leaf(taffy::style::Style {
15 size: taffy::geometry::Size { width: taffy::style::Dimension::Points(20f32), height: auto() },
16 ..Default::default()
17 })
18 .unwrap();
19 let node2 = taffy
20 .new_leaf(taffy::style::Style {
21 size: taffy::geometry::Size { width: taffy::style::Dimension::Points(30f32), height: auto() },
22 ..Default::default()
23 })
24 .unwrap();
25 let node = taffy
26 .new_with_children(
27 taffy::style::Style {
28 align_items: Some(taffy::style::AlignItems::Stretch),
29 gap: taffy::geometry::Size { width: taffy::style::LengthPercentage::Points(10f32), height: zero() },
30 size: taffy::geometry::Size { width: auto(), height: taffy::style::Dimension::Points(100f32) },
31 ..Default::default()
32 },
33 &[node0, node1, node2],
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, 80f32, "width of node {:?}. Expected {}. Actual {}", node.data(), 80f32, 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, 10f32, "width of node {:?}. Expected {}. Actual {}", node0.data(), 10f32, size.width);
47 assert_eq!(size.height, 100f32, "height of node {:?}. Expected {}. Actual {}", node0.data(), 100f32, 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(node1).unwrap();
51 assert_eq!(size.width, 20f32, "width of node {:?}. Expected {}. Actual {}", node1.data(), 20f32, size.width);
52 assert_eq!(size.height, 100f32, "height of node {:?}. Expected {}. Actual {}", node1.data(), 100f32, size.height);
53 assert_eq!(location.x, 20f32, "x of node {:?}. Expected {}. Actual {}", node1.data(), 20f32, location.x);
54 assert_eq!(location.y, 0f32, "y of node {:?}. Expected {}. Actual {}", node1.data(), 0f32, location.y);
55 let Layout { size, location, .. } = taffy.layout(node2).unwrap();
56 assert_eq!(size.width, 30f32, "width of node {:?}. Expected {}. Actual {}", node2.data(), 30f32, size.width);
57 assert_eq!(size.height, 100f32, "height of node {:?}. Expected {}. Actual {}", node2.data(), 100f32, size.height);
58 assert_eq!(location.x, 50f32, "x of node {:?}. Expected {}. Actual {}", node2.data(), 50f32, location.x);
59 assert_eq!(location.y, 0f32, "y of node {:?}. Expected {}. Actual {}", node2.data(), 0f32, location.y);
60}