tawasuyu/taffy

1#[test]
2fn aspect_ratio_flex_row_fill_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: auto(), height: taffy::style::Dimension::Points(40f32) },
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::Flex,
18                align_items: Some(taffy::style::AlignItems::Start),
19                size: taffy::geometry::Size {
20                    width: taffy::style::Dimension::Points(100f32),
21                    height: taffy::style::Dimension::Points(100f32),
22                },
23                ..Default::default()
24            },
25            &[node0],
26        )
27        .unwrap();
28    taffy.compute_layout(node, taffy::geometry::Size::MAX_CONTENT).unwrap();
29    println!("\nComputed tree:");
30    taffy::debug::print_tree(&taffy, node);
31    println!();
32    let Layout { size, location, .. } = taffy.layout(node).unwrap();
33    assert_eq!(size.width, 100f32, "width of node {:?}. Expected {}. Actual {}", node.data(), 100f32, size.width);
34    assert_eq!(size.height, 100f32, "height of node {:?}. Expected {}. Actual {}", node.data(), 100f32, size.height);
35    assert_eq!(location.x, 0f32, "x of node {:?}. Expected {}. Actual {}", node.data(), 0f32, location.x);
36    assert_eq!(location.y, 0f32, "y of node {:?}. Expected {}. Actual {}", node.data(), 0f32, location.y);
37    let Layout { size, location, .. } = taffy.layout(node0).unwrap();
38    assert_eq!(size.width, 80f32, "width of node {:?}. Expected {}. Actual {}", node0.data(), 80f32, size.width);
39    assert_eq!(size.height, 40f32, "height of node {:?}. Expected {}. Actual {}", node0.data(), 40f32, size.height);
40    assert_eq!(location.x, 0f32, "x of node {:?}. Expected {}. Actual {}", node0.data(), 0f32, location.x);
41    assert_eq!(location.y, 0f32, "y of node {:?}. Expected {}. Actual {}", node0.data(), 0f32, location.y);
42}