tawasuyu/taffy

1#[test]
2fn flex_grow_less_than_factor_one() {
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: 0.2f32,
10            flex_shrink: 0f32,
11            flex_basis: taffy::style::Dimension::Points(40f32),
12            ..Default::default()
13        })
14        .unwrap();
15    let node1 =
16        taffy.new_leaf(taffy::style::Style { flex_grow: 0.2f32, flex_shrink: 0f32, ..Default::default() }).unwrap();
17    let node2 =
18        taffy.new_leaf(taffy::style::Style { flex_grow: 0.4f32, flex_shrink: 0f32, ..Default::default() }).unwrap();
19    let node = taffy
20        .new_with_children(
21            taffy::style::Style {
22                size: taffy::geometry::Size {
23                    width: taffy::style::Dimension::Points(500f32),
24                    height: taffy::style::Dimension::Points(200f32),
25                },
26                ..Default::default()
27            },
28            &[node0, node1, node2],
29        )
30        .unwrap();
31    taffy.compute_layout(node, taffy::geometry::Size::MAX_CONTENT).unwrap();
32    println!("\nComputed tree:");
33    taffy::debug::print_tree(&taffy, node);
34    println!();
35    let Layout { size, location, .. } = taffy.layout(node).unwrap();
36    assert_eq!(size.width, 500f32, "width of node {:?}. Expected {}. Actual {}", node.data(), 500f32, size.width);
37    assert_eq!(size.height, 200f32, "height of node {:?}. Expected {}. Actual {}", node.data(), 200f32, size.height);
38    assert_eq!(location.x, 0f32, "x of node {:?}. Expected {}. Actual {}", node.data(), 0f32, location.x);
39    assert_eq!(location.y, 0f32, "y of node {:?}. Expected {}. Actual {}", node.data(), 0f32, location.y);
40    let Layout { size, location, .. } = taffy.layout(node0).unwrap();
41    assert_eq!(size.width, 132f32, "width of node {:?}. Expected {}. Actual {}", node0.data(), 132f32, size.width);
42    assert_eq!(size.height, 200f32, "height of node {:?}. Expected {}. Actual {}", node0.data(), 200f32, size.height);
43    assert_eq!(location.x, 0f32, "x of node {:?}. Expected {}. Actual {}", node0.data(), 0f32, location.x);
44    assert_eq!(location.y, 0f32, "y of node {:?}. Expected {}. Actual {}", node0.data(), 0f32, location.y);
45    let Layout { size, location, .. } = taffy.layout(node1).unwrap();
46    assert_eq!(size.width, 92f32, "width of node {:?}. Expected {}. Actual {}", node1.data(), 92f32, size.width);
47    assert_eq!(size.height, 200f32, "height of node {:?}. Expected {}. Actual {}", node1.data(), 200f32, size.height);
48    assert_eq!(location.x, 132f32, "x of node {:?}. Expected {}. Actual {}", node1.data(), 132f32, location.x);
49    assert_eq!(location.y, 0f32, "y of node {:?}. Expected {}. Actual {}", node1.data(), 0f32, location.y);
50    let Layout { size, location, .. } = taffy.layout(node2).unwrap();
51    assert_eq!(size.width, 184f32, "width of node {:?}. Expected {}. Actual {}", node2.data(), 184f32, size.width);
52    assert_eq!(size.height, 200f32, "height of node {:?}. Expected {}. Actual {}", node2.data(), 200f32, size.height);
53    assert_eq!(location.x, 224f32, "x of node {:?}. Expected {}. Actual {}", node2.data(), 224f32, location.x);
54    assert_eq!(location.y, 0f32, "y of node {:?}. Expected {}. Actual {}", node2.data(), 0f32, location.y);
55}