tawasuyu/taffy

1#[test]
2fn only_shrinkable_item_with_flex_basis_zero() {
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_shrink: 1f32,
10            flex_basis: taffy::style::Dimension::Points(0f32),
11            ..Default::default()
12        })
13        .unwrap();
14    let node1 = taffy
15        .new_leaf(taffy::style::Style {
16            flex_shrink: 0f32,
17            flex_basis: taffy::style::Dimension::Points(93f32),
18            margin: taffy::geometry::Rect {
19                left: zero(),
20                right: zero(),
21                top: zero(),
22                bottom: taffy::style::LengthPercentageAuto::Points(6f32),
23            },
24            ..Default::default()
25        })
26        .unwrap();
27    let node2 = taffy
28        .new_leaf(taffy::style::Style {
29            flex_shrink: 0f32,
30            flex_basis: taffy::style::Dimension::Points(764f32),
31            ..Default::default()
32        })
33        .unwrap();
34    let node = taffy
35        .new_with_children(
36            taffy::style::Style {
37                flex_direction: taffy::style::FlexDirection::Column,
38                size: taffy::geometry::Size { width: taffy::style::Dimension::Points(480f32), height: auto() },
39                max_size: taffy::geometry::Size { width: auto(), height: taffy::style::Dimension::Points(764f32) },
40                ..Default::default()
41            },
42            &[node0, node1, node2],
43        )
44        .unwrap();
45    taffy.compute_layout(node, taffy::geometry::Size::MAX_CONTENT).unwrap();
46    println!("\nComputed tree:");
47    taffy::debug::print_tree(&taffy, node);
48    println!();
49    let Layout { size, location, .. } = taffy.layout(node).unwrap();
50    assert_eq!(size.width, 480f32, "width of node {:?}. Expected {}. Actual {}", node.data(), 480f32, size.width);
51    assert_eq!(size.height, 764f32, "height of node {:?}. Expected {}. Actual {}", node.data(), 764f32, size.height);
52    assert_eq!(location.x, 0f32, "x of node {:?}. Expected {}. Actual {}", node.data(), 0f32, location.x);
53    assert_eq!(location.y, 0f32, "y of node {:?}. Expected {}. Actual {}", node.data(), 0f32, location.y);
54    let Layout { size, location, .. } = taffy.layout(node0).unwrap();
55    assert_eq!(size.width, 480f32, "width of node {:?}. Expected {}. Actual {}", node0.data(), 480f32, size.width);
56    assert_eq!(size.height, 0f32, "height of node {:?}. Expected {}. Actual {}", node0.data(), 0f32, size.height);
57    assert_eq!(location.x, 0f32, "x of node {:?}. Expected {}. Actual {}", node0.data(), 0f32, location.x);
58    assert_eq!(location.y, 0f32, "y of node {:?}. Expected {}. Actual {}", node0.data(), 0f32, location.y);
59    let Layout { size, location, .. } = taffy.layout(node1).unwrap();
60    assert_eq!(size.width, 480f32, "width of node {:?}. Expected {}. Actual {}", node1.data(), 480f32, size.width);
61    assert_eq!(size.height, 93f32, "height of node {:?}. Expected {}. Actual {}", node1.data(), 93f32, size.height);
62    assert_eq!(location.x, 0f32, "x of node {:?}. Expected {}. Actual {}", node1.data(), 0f32, location.x);
63    assert_eq!(location.y, 0f32, "y of node {:?}. Expected {}. Actual {}", node1.data(), 0f32, location.y);
64    let Layout { size, location, .. } = taffy.layout(node2).unwrap();
65    assert_eq!(size.width, 480f32, "width of node {:?}. Expected {}. Actual {}", node2.data(), 480f32, size.width);
66    assert_eq!(size.height, 764f32, "height of node {:?}. Expected {}. Actual {}", node2.data(), 764f32, size.height);
67    assert_eq!(location.x, 0f32, "x of node {:?}. Expected {}. Actual {}", node2.data(), 0f32, location.x);
68    assert_eq!(location.y, 99f32, "y of node {:?}. Expected {}. Actual {}", node2.data(), 99f32, location.y);
69}