tawasuyu/taffy

1#[test]
2fn grid_aspect_ratio_fill_child_height() {
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(50f32), height: auto() },
10            aspect_ratio: Some(2f32),
11            ..Default::default()
12        })
13        .unwrap();
14    let node = taffy
15        .new_with_children(
16            taffy::style::Style {
17                display: taffy::style::Display::Grid,
18                size: taffy::geometry::Size {
19                    width: taffy::style::Dimension::Points(100f32),
20                    height: taffy::style::Dimension::Points(100f32),
21                },
22                ..Default::default()
23            },
24            &[node0],
25        )
26        .unwrap();
27    taffy.compute_layout(node, taffy::geometry::Size::MAX_CONTENT).unwrap();
28    println!("\nComputed tree:");
29    taffy::debug::print_tree(&taffy, node);
30    println!();
31    let Layout { size, location, .. } = taffy.layout(node).unwrap();
32    assert_eq!(size.width, 100f32, "width of node {:?}. Expected {}. Actual {}", node.data(), 100f32, size.width);
33    assert_eq!(size.height, 100f32, "height of node {:?}. Expected {}. Actual {}", node.data(), 100f32, size.height);
34    assert_eq!(location.x, 0f32, "x of node {:?}. Expected {}. Actual {}", node.data(), 0f32, location.x);
35    assert_eq!(location.y, 0f32, "y of node {:?}. Expected {}. Actual {}", node.data(), 0f32, location.y);
36    let Layout { size, location, .. } = taffy.layout(node0).unwrap();
37    assert_eq!(size.width, 50f32, "width of node {:?}. Expected {}. Actual {}", node0.data(), 50f32, size.width);
38    assert_eq!(size.height, 25f32, "height of node {:?}. Expected {}. Actual {}", node0.data(), 25f32, size.height);
39    assert_eq!(location.x, 0f32, "x of node {:?}. Expected {}. Actual {}", node0.data(), 0f32, location.x);
40    assert_eq!(location.y, 0f32, "y of node {:?}. Expected {}. Actual {}", node0.data(), 0f32, location.y);
41}