tawasuyu/taffy

1#[test]
2fn flex_grow_within_constrained_max_row() {
3    use slotmap::Key;
4    #[allow(unused_imports)]
5    use taffy::{layout::Layout, prelude::*};
6    let mut taffy = taffy::Taffy::new();
7    let node00 = taffy
8        .new_leaf(taffy::style::Style {
9            flex_shrink: 1f32,
10            flex_basis: taffy::style::Dimension::Points(100f32),
11            ..Default::default()
12        })
13        .unwrap();
14    let node01 = taffy
15        .new_leaf(taffy::style::Style {
16            size: taffy::geometry::Size { width: taffy::style::Dimension::Points(50f32), height: auto() },
17            ..Default::default()
18        })
19        .unwrap();
20    let node0 = taffy
21        .new_with_children(
22            taffy::style::Style {
23                size: taffy::geometry::Size { width: auto(), height: taffy::style::Dimension::Points(100f32) },
24                max_size: taffy::geometry::Size { width: taffy::style::Dimension::Points(100f32), height: auto() },
25                ..Default::default()
26            },
27            &[node00, node01],
28        )
29        .unwrap();
30    let node = taffy
31        .new_with_children(
32            taffy::style::Style {
33                flex_direction: taffy::style::FlexDirection::Column,
34                size: taffy::geometry::Size { width: taffy::style::Dimension::Points(200f32), height: auto() },
35                ..Default::default()
36            },
37            &[node0],
38        )
39        .unwrap();
40    taffy.compute_layout(node, taffy::geometry::Size::MAX_CONTENT).unwrap();
41    println!("\nComputed tree:");
42    taffy::debug::print_tree(&taffy, node);
43    println!();
44    let Layout { size, location, .. } = taffy.layout(node).unwrap();
45    assert_eq!(size.width, 200f32, "width of node {:?}. Expected {}. Actual {}", node.data(), 200f32, size.width);
46    assert_eq!(size.height, 100f32, "height of node {:?}. Expected {}. Actual {}", node.data(), 100f32, size.height);
47    assert_eq!(location.x, 0f32, "x of node {:?}. Expected {}. Actual {}", node.data(), 0f32, location.x);
48    assert_eq!(location.y, 0f32, "y of node {:?}. Expected {}. Actual {}", node.data(), 0f32, location.y);
49    let Layout { size, location, .. } = taffy.layout(node0).unwrap();
50    assert_eq!(size.width, 100f32, "width of node {:?}. Expected {}. Actual {}", node0.data(), 100f32, size.width);
51    assert_eq!(size.height, 100f32, "height of node {:?}. Expected {}. Actual {}", node0.data(), 100f32, size.height);
52    assert_eq!(location.x, 0f32, "x of node {:?}. Expected {}. Actual {}", node0.data(), 0f32, location.x);
53    assert_eq!(location.y, 0f32, "y of node {:?}. Expected {}. Actual {}", node0.data(), 0f32, location.y);
54    let Layout { size, location, .. } = taffy.layout(node00).unwrap();
55    assert_eq!(size.width, 67f32, "width of node {:?}. Expected {}. Actual {}", node00.data(), 67f32, size.width);
56    assert_eq!(size.height, 100f32, "height of node {:?}. Expected {}. Actual {}", node00.data(), 100f32, size.height);
57    assert_eq!(location.x, 0f32, "x of node {:?}. Expected {}. Actual {}", node00.data(), 0f32, location.x);
58    assert_eq!(location.y, 0f32, "y of node {:?}. Expected {}. Actual {}", node00.data(), 0f32, location.y);
59    let Layout { size, location, .. } = taffy.layout(node01).unwrap();
60    assert_eq!(size.width, 33f32, "width of node {:?}. Expected {}. Actual {}", node01.data(), 33f32, size.width);
61    assert_eq!(size.height, 100f32, "height of node {:?}. Expected {}. Actual {}", node01.data(), 100f32, size.height);
62    assert_eq!(location.x, 67f32, "x of node {:?}. Expected {}. Actual {}", node01.data(), 67f32, location.x);
63    assert_eq!(location.y, 0f32, "y of node {:?}. Expected {}. Actual {}", node01.data(), 0f32, location.y);
64}