tawasuyu/taffy

1#[test]
2fn grid_available_space_smaller_than_max_content() {
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_with_measure(
9            taffy::style::Style { ..Default::default() },
10            taffy::node::MeasureFunc::Raw(|known_dimensions, available_space| {
11                const TEXT: &str = "HH\u{200b}HH\u{200b}HH\u{200b}HH";
12                super::measure_standard_text(
13                    known_dimensions,
14                    available_space,
15                    TEXT,
16                    super::WritingMode::Horizontal,
17                    None,
18                )
19            }),
20        )
21        .unwrap();
22    let node1 = taffy
23        .new_leaf_with_measure(
24            taffy::style::Style { ..Default::default() },
25            taffy::node::MeasureFunc::Raw(|known_dimensions, available_space| {
26                const TEXT: &str = "HH\u{200b}HH\u{200b}HH\u{200b}HH";
27                super::measure_standard_text(
28                    known_dimensions,
29                    available_space,
30                    TEXT,
31                    super::WritingMode::Horizontal,
32                    None,
33                )
34            }),
35        )
36        .unwrap();
37    let node = taffy
38        .new_with_children(
39            taffy::style::Style {
40                display: taffy::style::Display::Grid,
41                grid_template_columns: vec![auto(), auto()],
42                ..Default::default()
43            },
44            &[node0, node1],
45        )
46        .unwrap();
47    taffy
48        .compute_layout(
49            node,
50            taffy::geometry::Size {
51                width: taffy::style::AvailableSpace::Definite(80f32),
52                height: taffy::style::AvailableSpace::MaxContent,
53            },
54        )
55        .unwrap();
56    println!("\nComputed tree:");
57    taffy::debug::print_tree(&taffy, node);
58    println!();
59    let Layout { size, location, .. } = taffy.layout(node).unwrap();
60    assert_eq!(size.width, 80f32, "width of node {:?}. Expected {}. Actual {}", node.data(), 80f32, size.width);
61    assert_eq!(size.height, 20f32, "height of node {:?}. Expected {}. Actual {}", node.data(), 20f32, size.height);
62    assert_eq!(location.x, 0f32, "x of node {:?}. Expected {}. Actual {}", node.data(), 0f32, location.x);
63    assert_eq!(location.y, 0f32, "y of node {:?}. Expected {}. Actual {}", node.data(), 0f32, location.y);
64    let Layout { size, location, .. } = taffy.layout(node0).unwrap();
65    assert_eq!(size.width, 40f32, "width of node {:?}. Expected {}. Actual {}", node0.data(), 40f32, size.width);
66    assert_eq!(size.height, 20f32, "height of node {:?}. Expected {}. Actual {}", node0.data(), 20f32, size.height);
67    assert_eq!(location.x, 0f32, "x of node {:?}. Expected {}. Actual {}", node0.data(), 0f32, location.x);
68    assert_eq!(location.y, 0f32, "y of node {:?}. Expected {}. Actual {}", node0.data(), 0f32, location.y);
69    let Layout { size, location, .. } = taffy.layout(node1).unwrap();
70    assert_eq!(size.width, 40f32, "width of node {:?}. Expected {}. Actual {}", node1.data(), 40f32, size.width);
71    assert_eq!(size.height, 20f32, "height of node {:?}. Expected {}. Actual {}", node1.data(), 20f32, size.height);
72    assert_eq!(location.x, 40f32, "x of node {:?}. Expected {}. Actual {}", node1.data(), 40f32, location.x);
73    assert_eq!(location.y, 0f32, "y of node {:?}. Expected {}. Actual {}", node1.data(), 0f32, location.y);
74}