tawasuyu/taffy

1#[test]
2fn flex_shrink_to_zero() {
3    let mut taffy = taffy::Taffy::new();
4    let node0 = taffy
5        .new_with_children(
6            taffy::style::FlexboxLayout {
7                flex_shrink: 0f32,
8                size: taffy::geometry::Size {
9                    width: taffy::style::Dimension::Points(50f32),
10                    height: taffy::style::Dimension::Points(50f32),
11                    ..Default::default()
12                },
13                ..Default::default()
14            },
15            &[],
16        )
17        .unwrap();
18    let node1 = taffy
19        .new_with_children(
20            taffy::style::FlexboxLayout {
21                flex_shrink: 1f32,
22                size: taffy::geometry::Size {
23                    width: taffy::style::Dimension::Points(50f32),
24                    height: taffy::style::Dimension::Points(50f32),
25                    ..Default::default()
26                },
27                ..Default::default()
28            },
29            &[],
30        )
31        .unwrap();
32    let node2 = taffy
33        .new_with_children(
34            taffy::style::FlexboxLayout {
35                flex_shrink: 0f32,
36                size: taffy::geometry::Size {
37                    width: taffy::style::Dimension::Points(50f32),
38                    height: taffy::style::Dimension::Points(50f32),
39                    ..Default::default()
40                },
41                ..Default::default()
42            },
43            &[],
44        )
45        .unwrap();
46    let node = taffy
47        .new_with_children(
48            taffy::style::FlexboxLayout {
49                size: taffy::geometry::Size { width: taffy::style::Dimension::Points(75f32), ..Default::default() },
50                ..Default::default()
51            },
52            &[node0, node1, node2],
53        )
54        .unwrap();
55    taffy.compute_layout(node, taffy::geometry::Size::undefined()).unwrap();
56    assert_eq!(taffy.layout(node).unwrap().size.width, 75f32);
57    assert_eq!(taffy.layout(node).unwrap().size.height, 50f32);
58    assert_eq!(taffy.layout(node).unwrap().location.x, 0f32);
59    assert_eq!(taffy.layout(node).unwrap().location.y, 0f32);
60    assert_eq!(taffy.layout(node0).unwrap().size.width, 50f32);
61    assert_eq!(taffy.layout(node0).unwrap().size.height, 50f32);
62    assert_eq!(taffy.layout(node0).unwrap().location.x, 0f32);
63    assert_eq!(taffy.layout(node0).unwrap().location.y, 0f32);
64    assert_eq!(taffy.layout(node1).unwrap().size.width, 0f32);
65    assert_eq!(taffy.layout(node1).unwrap().size.height, 50f32);
66    assert_eq!(taffy.layout(node1).unwrap().location.x, 50f32);
67    assert_eq!(taffy.layout(node1).unwrap().location.y, 0f32);
68    assert_eq!(taffy.layout(node2).unwrap().size.width, 50f32);
69    assert_eq!(taffy.layout(node2).unwrap().size.height, 50f32);
70    assert_eq!(taffy.layout(node2).unwrap().location.x, 50f32);
71    assert_eq!(taffy.layout(node2).unwrap().location.y, 0f32);
72}