tawasuyu/taffy

1#[test]
2fn child_min_max_width_flexing() {
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            flex_grow: 1f32,
10            flex_shrink: 0f32,
11            flex_basis: taffy::style::Dimension::Points(0f32),
12            min_size: taffy::geometry::Size { width: taffy::style::Dimension::Points(60f32), height: auto() },
13            ..Default::default()
14        })
15        .unwrap();
16    let node1 = taffy
17        .new_leaf(taffy::style::Style {
18            flex_grow: 1f32,
19            flex_shrink: 0f32,
20            flex_basis: taffy::style::Dimension::Percent(0.5f32),
21            max_size: taffy::geometry::Size { width: taffy::style::Dimension::Points(20f32), 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                size: taffy::geometry::Size {
30                    width: taffy::style::Dimension::Points(120f32),
31                    height: taffy::style::Dimension::Points(50f32),
32                },
33                ..Default::default()
34            },
35            &[node0, node1],
36        )
37        .unwrap();
38    taffy.compute_layout(node, taffy::geometry::Size::MAX_CONTENT).unwrap();
39    println!("\nComputed tree:");
40    taffy::debug::print_tree(&taffy, node);
41    println!();
42    let Layout { size, location, .. } = taffy.layout(node).unwrap();
43    assert_eq!(size.width, 120f32, "width of node {:?}. Expected {}. Actual {}", node.data(), 120f32, size.width);
44    assert_eq!(size.height, 50f32, "height of node {:?}. Expected {}. Actual {}", node.data(), 50f32, size.height);
45    assert_eq!(location.x, 0f32, "x of node {:?}. Expected {}. Actual {}", node.data(), 0f32, location.x);
46    assert_eq!(location.y, 0f32, "y of node {:?}. Expected {}. Actual {}", node.data(), 0f32, location.y);
47    let Layout { size, location, .. } = taffy.layout(node0).unwrap();
48    assert_eq!(size.width, 100f32, "width of node {:?}. Expected {}. Actual {}", node0.data(), 100f32, size.width);
49    assert_eq!(size.height, 50f32, "height of node {:?}. Expected {}. Actual {}", node0.data(), 50f32, size.height);
50    assert_eq!(location.x, 0f32, "x of node {:?}. Expected {}. Actual {}", node0.data(), 0f32, location.x);
51    assert_eq!(location.y, 0f32, "y of node {:?}. Expected {}. Actual {}", node0.data(), 0f32, location.y);
52    let Layout { size, location, .. } = taffy.layout(node1).unwrap();
53    assert_eq!(size.width, 20f32, "width of node {:?}. Expected {}. Actual {}", node1.data(), 20f32, size.width);
54    assert_eq!(size.height, 50f32, "height of node {:?}. Expected {}. Actual {}", node1.data(), 50f32, size.height);
55    assert_eq!(location.x, 100f32, "x of node {:?}. Expected {}. Actual {}", node1.data(), 100f32, location.x);
56    assert_eq!(location.y, 0f32, "y of node {:?}. Expected {}. Actual {}", node1.data(), 0f32, location.y);
57}