tawasuyu/taffy

1#[test]
2fn align_content_flex_start_without_height_on_children() {
3    #[allow(unused_imports)]
4    use taffy::{prelude::*, tree::Layout};
5    let mut taffy = taffy::Taffy::new();
6    let node0 = taffy
7        .new_leaf(taffy::style::Style {
8            size: taffy::geometry::Size { width: taffy::style::Dimension::Length(50f32), height: auto() },
9            ..Default::default()
10        })
11        .unwrap();
12    let node1 = taffy
13        .new_leaf(taffy::style::Style {
14            size: taffy::geometry::Size {
15                width: taffy::style::Dimension::Length(50f32),
16                height: taffy::style::Dimension::Length(10f32),
17            },
18            ..Default::default()
19        })
20        .unwrap();
21    let node2 = taffy
22        .new_leaf(taffy::style::Style {
23            size: taffy::geometry::Size { width: taffy::style::Dimension::Length(50f32), height: auto() },
24            ..Default::default()
25        })
26        .unwrap();
27    let node3 = taffy
28        .new_leaf(taffy::style::Style {
29            size: taffy::geometry::Size {
30                width: taffy::style::Dimension::Length(50f32),
31                height: taffy::style::Dimension::Length(10f32),
32            },
33            ..Default::default()
34        })
35        .unwrap();
36    let node4 = taffy
37        .new_leaf(taffy::style::Style {
38            size: taffy::geometry::Size { width: taffy::style::Dimension::Length(50f32), height: auto() },
39            ..Default::default()
40        })
41        .unwrap();
42    let node = taffy
43        .new_with_children(
44            taffy::style::Style {
45                flex_direction: taffy::style::FlexDirection::Column,
46                flex_wrap: taffy::style::FlexWrap::Wrap,
47                align_content: Some(taffy::style::AlignContent::FlexStart),
48                size: taffy::geometry::Size {
49                    width: taffy::style::Dimension::Length(100f32),
50                    height: taffy::style::Dimension::Length(100f32),
51                },
52                ..Default::default()
53            },
54            &[node0, node1, node2, node3, node4],
55        )
56        .unwrap();
57    taffy.compute_layout(node, taffy::geometry::Size::MAX_CONTENT).unwrap();
58    println!("\nComputed tree:");
59    taffy::util::print_tree(&taffy, node);
60    println!();
61    let Layout { size, location, .. } = taffy.layout(node).unwrap();
62    assert_eq!(size.width, 100f32, "width of node {:?}. Expected {}. Actual {}", node, 100f32, size.width);
63    assert_eq!(size.height, 100f32, "height of node {:?}. Expected {}. Actual {}", node, 100f32, size.height);
64    assert_eq!(location.x, 0f32, "x of node {:?}. Expected {}. Actual {}", node, 0f32, location.x);
65    assert_eq!(location.y, 0f32, "y of node {:?}. Expected {}. Actual {}", node, 0f32, location.y);
66    let Layout { size, location, .. } = taffy.layout(node0).unwrap();
67    assert_eq!(size.width, 50f32, "width of node {:?}. Expected {}. Actual {}", node0, 50f32, size.width);
68    assert_eq!(size.height, 0f32, "height of node {:?}. Expected {}. Actual {}", node0, 0f32, size.height);
69    assert_eq!(location.x, 0f32, "x of node {:?}. Expected {}. Actual {}", node0, 0f32, location.x);
70    assert_eq!(location.y, 0f32, "y of node {:?}. Expected {}. Actual {}", node0, 0f32, location.y);
71    let Layout { size, location, .. } = taffy.layout(node1).unwrap();
72    assert_eq!(size.width, 50f32, "width of node {:?}. Expected {}. Actual {}", node1, 50f32, size.width);
73    assert_eq!(size.height, 10f32, "height of node {:?}. Expected {}. Actual {}", node1, 10f32, size.height);
74    assert_eq!(location.x, 0f32, "x of node {:?}. Expected {}. Actual {}", node1, 0f32, location.x);
75    assert_eq!(location.y, 0f32, "y of node {:?}. Expected {}. Actual {}", node1, 0f32, location.y);
76    let Layout { size, location, .. } = taffy.layout(node2).unwrap();
77    assert_eq!(size.width, 50f32, "width of node {:?}. Expected {}. Actual {}", node2, 50f32, size.width);
78    assert_eq!(size.height, 0f32, "height of node {:?}. Expected {}. Actual {}", node2, 0f32, size.height);
79    assert_eq!(location.x, 0f32, "x of node {:?}. Expected {}. Actual {}", node2, 0f32, location.x);
80    assert_eq!(location.y, 10f32, "y of node {:?}. Expected {}. Actual {}", node2, 10f32, location.y);
81    let Layout { size, location, .. } = taffy.layout(node3).unwrap();
82    assert_eq!(size.width, 50f32, "width of node {:?}. Expected {}. Actual {}", node3, 50f32, size.width);
83    assert_eq!(size.height, 10f32, "height of node {:?}. Expected {}. Actual {}", node3, 10f32, size.height);
84    assert_eq!(location.x, 0f32, "x of node {:?}. Expected {}. Actual {}", node3, 0f32, location.x);
85    assert_eq!(location.y, 10f32, "y of node {:?}. Expected {}. Actual {}", node3, 10f32, location.y);
86    let Layout { size, location, .. } = taffy.layout(node4).unwrap();
87    assert_eq!(size.width, 50f32, "width of node {:?}. Expected {}. Actual {}", node4, 50f32, size.width);
88    assert_eq!(size.height, 0f32, "height of node {:?}. Expected {}. Actual {}", node4, 0f32, size.height);
89    assert_eq!(location.x, 0f32, "x of node {:?}. Expected {}. Actual {}", node4, 0f32, location.x);
90    assert_eq!(location.y, 20f32, "y of node {:?}. Expected {}. Actual {}", node4, 20f32, location.y);
91}