tawasuyu/taffy

1#[test]
2fn aspect_ratio_flex_column_fill_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(40f32), 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::Flex,
18                flex_direction: taffy::style::FlexDirection::Column,
19                align_items: Some(taffy::style::AlignItems::Start),
20                size: taffy::geometry::Size {
21                    width: taffy::style::Dimension::Points(100f32),
22                    height: taffy::style::Dimension::Points(100f32),
23                },
24                ..Default::default()
25            },
26            &[node0],
27        )
28        .unwrap();
29    taffy.compute_layout(node, taffy::geometry::Size::MAX_CONTENT).unwrap();
30    println!("\nComputed tree:");
31    taffy::debug::print_tree(&taffy, node);
32    println!();
33    let Layout { size, location, .. } = taffy.layout(node).unwrap();
34    assert_eq!(size.width, 100f32, "width of node {:?}. Expected {}. Actual {}", node.data(), 100f32, size.width);
35    assert_eq!(size.height, 100f32, "height of node {:?}. Expected {}. Actual {}", node.data(), 100f32, size.height);
36    assert_eq!(location.x, 0f32, "x of node {:?}. Expected {}. Actual {}", node.data(), 0f32, location.x);
37    assert_eq!(location.y, 0f32, "y of node {:?}. Expected {}. Actual {}", node.data(), 0f32, location.y);
38    let Layout { size, location, .. } = taffy.layout(node0).unwrap();
39    assert_eq!(size.width, 40f32, "width of node {:?}. Expected {}. Actual {}", node0.data(), 40f32, size.width);
40    assert_eq!(size.height, 20f32, "height of node {:?}. Expected {}. Actual {}", node0.data(), 20f32, size.height);
41    assert_eq!(location.x, 0f32, "x of node {:?}. Expected {}. Actual {}", node0.data(), 0f32, location.x);
42    assert_eq!(location.y, 0f32, "y of node {:?}. Expected {}. Actual {}", node0.data(), 0f32, location.y);
43}