tawasuyu/taffy

1#[test]
2fn flex_wrap_wrap_to_child_height() {
3    use slotmap::Key;
4    #[allow(unused_imports)]
5    use taffy::{layout::Layout, prelude::*};
6    let mut taffy = taffy::Taffy::new();
7    let node000 = taffy
8        .new_leaf(taffy::style::Style {
9            size: taffy::geometry::Size {
10                width: taffy::style::Dimension::Points(100f32),
11                height: taffy::style::Dimension::Points(100f32),
12            },
13            ..Default::default()
14        })
15        .unwrap();
16    let node00 = taffy
17        .new_with_children(
18            taffy::style::Style {
19                flex_direction: taffy::style::FlexDirection::Column,
20                size: taffy::geometry::Size { width: taffy::style::Dimension::Points(100f32), height: auto() },
21                ..Default::default()
22            },
23            &[node000],
24        )
25        .unwrap();
26    let node0 = taffy
27        .new_with_children(
28            taffy::style::Style {
29                flex_wrap: taffy::style::FlexWrap::Wrap,
30                align_items: Some(taffy::style::AlignItems::FlexStart),
31                ..Default::default()
32            },
33            &[node00],
34        )
35        .unwrap();
36    let node1 = taffy
37        .new_leaf(taffy::style::Style {
38            size: taffy::geometry::Size {
39                width: taffy::style::Dimension::Points(100f32),
40                height: taffy::style::Dimension::Points(100f32),
41            },
42            ..Default::default()
43        })
44        .unwrap();
45    let node = taffy
46        .new_with_children(
47            taffy::style::Style { flex_direction: taffy::style::FlexDirection::Column, ..Default::default() },
48            &[node0, node1],
49        )
50        .unwrap();
51    taffy.compute_layout(node, taffy::geometry::Size::MAX_CONTENT).unwrap();
52    println!("\nComputed tree:");
53    taffy::debug::print_tree(&taffy, node);
54    println!();
55    let Layout { size, location, .. } = taffy.layout(node).unwrap();
56    assert_eq!(size.width, 100f32, "width of node {:?}. Expected {}. Actual {}", node.data(), 100f32, size.width);
57    assert_eq!(size.height, 200f32, "height of node {:?}. Expected {}. Actual {}", node.data(), 200f32, size.height);
58    assert_eq!(location.x, 0f32, "x of node {:?}. Expected {}. Actual {}", node.data(), 0f32, location.x);
59    assert_eq!(location.y, 0f32, "y of node {:?}. Expected {}. Actual {}", node.data(), 0f32, location.y);
60    let Layout { size, location, .. } = taffy.layout(node0).unwrap();
61    assert_eq!(size.width, 100f32, "width of node {:?}. Expected {}. Actual {}", node0.data(), 100f32, size.width);
62    assert_eq!(size.height, 100f32, "height of node {:?}. Expected {}. Actual {}", node0.data(), 100f32, size.height);
63    assert_eq!(location.x, 0f32, "x of node {:?}. Expected {}. Actual {}", node0.data(), 0f32, location.x);
64    assert_eq!(location.y, 0f32, "y of node {:?}. Expected {}. Actual {}", node0.data(), 0f32, location.y);
65    let Layout { size, location, .. } = taffy.layout(node00).unwrap();
66    assert_eq!(size.width, 100f32, "width of node {:?}. Expected {}. Actual {}", node00.data(), 100f32, size.width);
67    assert_eq!(size.height, 100f32, "height of node {:?}. Expected {}. Actual {}", node00.data(), 100f32, size.height);
68    assert_eq!(location.x, 0f32, "x of node {:?}. Expected {}. Actual {}", node00.data(), 0f32, location.x);
69    assert_eq!(location.y, 0f32, "y of node {:?}. Expected {}. Actual {}", node00.data(), 0f32, location.y);
70    let Layout { size, location, .. } = taffy.layout(node000).unwrap();
71    assert_eq!(size.width, 100f32, "width of node {:?}. Expected {}. Actual {}", node000.data(), 100f32, size.width);
72    assert_eq!(size.height, 100f32, "height of node {:?}. Expected {}. Actual {}", node000.data(), 100f32, size.height);
73    assert_eq!(location.x, 0f32, "x of node {:?}. Expected {}. Actual {}", node000.data(), 0f32, location.x);
74    assert_eq!(location.y, 0f32, "y of node {:?}. Expected {}. Actual {}", node000.data(), 0f32, location.y);
75    let Layout { size, location, .. } = taffy.layout(node1).unwrap();
76    assert_eq!(size.width, 100f32, "width of node {:?}. Expected {}. Actual {}", node1.data(), 100f32, size.width);
77    assert_eq!(size.height, 100f32, "height of node {:?}. Expected {}. Actual {}", node1.data(), 100f32, size.height);
78    assert_eq!(location.x, 0f32, "x of node {:?}. Expected {}. Actual {}", node1.data(), 0f32, location.x);
79    assert_eq!(location.y, 100f32, "y of node {:?}. Expected {}. Actual {}", node1.data(), 100f32, location.y);
80}