tawasuyu/taffy

1#[test]
2fn grid_available_space_greater_than_max_content() {
3    #[allow(unused_imports)]
4    use taffy::{prelude::*, tree::Layout};
5    let mut taffy = taffy::Taffy::new();
6    let node0 = taffy
7        .new_leaf_with_measure(
8            taffy::style::Style { ..Default::default() },
9            taffy::tree::MeasureFunc::Raw(|known_dimensions, available_space| {
10                const TEXT: &str = "HH\u{200b}HH\u{200b}HH\u{200b}HH";
11                super::measure_standard_text(
12                    known_dimensions,
13                    available_space,
14                    TEXT,
15                    super::WritingMode::Horizontal,
16                    None,
17                )
18            }),
19        )
20        .unwrap();
21    let node1 = taffy
22        .new_leaf_with_measure(
23            taffy::style::Style { ..Default::default() },
24            taffy::tree::MeasureFunc::Raw(|known_dimensions, available_space| {
25                const TEXT: &str = "HH\u{200b}HH\u{200b}HH\u{200b}HH";
26                super::measure_standard_text(
27                    known_dimensions,
28                    available_space,
29                    TEXT,
30                    super::WritingMode::Horizontal,
31                    None,
32                )
33            }),
34        )
35        .unwrap();
36    let node = taffy
37        .new_with_children(
38            taffy::style::Style {
39                display: taffy::style::Display::Grid,
40                grid_template_columns: vec![auto(), auto()],
41                ..Default::default()
42            },
43            &[node0, node1],
44        )
45        .unwrap();
46    taffy
47        .compute_layout(
48            node,
49            taffy::geometry::Size {
50                width: taffy::style::AvailableSpace::Definite(400f32),
51                height: taffy::style::AvailableSpace::MaxContent,
52            },
53        )
54        .unwrap();
55    println!("\nComputed tree:");
56    taffy::util::print_tree(&taffy, node);
57    println!();
58    let Layout { size, location, .. } = taffy.layout(node).unwrap();
59    assert_eq!(size.width, 160f32, "width of node {:?}. Expected {}. Actual {}", node, 160f32, size.width);
60    assert_eq!(size.height, 10f32, "height of node {:?}. Expected {}. Actual {}", node, 10f32, size.height);
61    assert_eq!(location.x, 0f32, "x of node {:?}. Expected {}. Actual {}", node, 0f32, location.x);
62    assert_eq!(location.y, 0f32, "y of node {:?}. Expected {}. Actual {}", node, 0f32, location.y);
63    let Layout { size, location, .. } = taffy.layout(node0).unwrap();
64    assert_eq!(size.width, 80f32, "width of node {:?}. Expected {}. Actual {}", node0, 80f32, size.width);
65    assert_eq!(size.height, 10f32, "height of node {:?}. Expected {}. Actual {}", node0, 10f32, size.height);
66    assert_eq!(location.x, 0f32, "x of node {:?}. Expected {}. Actual {}", node0, 0f32, location.x);
67    assert_eq!(location.y, 0f32, "y of node {:?}. Expected {}. Actual {}", node0, 0f32, location.y);
68    let Layout { size, location, .. } = taffy.layout(node1).unwrap();
69    assert_eq!(size.width, 80f32, "width of node {:?}. Expected {}. Actual {}", node1, 80f32, size.width);
70    assert_eq!(size.height, 10f32, "height of node {:?}. Expected {}. Actual {}", node1, 10f32, size.height);
71    assert_eq!(location.x, 80f32, "x of node {:?}. Expected {}. Actual {}", node1, 80f32, location.x);
72    assert_eq!(location.y, 0f32, "y of node {:?}. Expected {}. Actual {}", node1, 0f32, location.y);
73}