tawasuyu/taffy

1#[test]
2fn grid_max_width_greater_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 node00 = 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 node01 = 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 node0 = taffy
38        .new_with_children(
39            taffy::style::Style {
40                display: taffy::style::Display::Grid,
41                grid_template_columns: vec![auto(), auto()],
42                max_size: taffy::geometry::Size { width: taffy::style::Dimension::Points(400f32), height: auto() },
43                ..Default::default()
44            },
45            &[node00, node01],
46        )
47        .unwrap();
48    let node = taffy
49        .new_with_children(
50            taffy::style::Style {
51                display: taffy::style::Display::Grid,
52                grid_template_columns: vec![max_content()],
53                ..Default::default()
54            },
55            &[node0],
56        )
57        .unwrap();
58    taffy.compute_layout(node, taffy::geometry::Size::MAX_CONTENT).unwrap();
59    println!("\nComputed tree:");
60    taffy::debug::print_tree(&taffy, node);
61    println!();
62    let Layout { size, location, .. } = taffy.layout(node).unwrap();
63    assert_eq!(size.width, 160f32, "width of node {:?}. Expected {}. Actual {}", node.data(), 160f32, size.width);
64    assert_eq!(size.height, 10f32, "height of node {:?}. Expected {}. Actual {}", node.data(), 10f32, size.height);
65    assert_eq!(location.x, 0f32, "x of node {:?}. Expected {}. Actual {}", node.data(), 0f32, location.x);
66    assert_eq!(location.y, 0f32, "y of node {:?}. Expected {}. Actual {}", node.data(), 0f32, location.y);
67    let Layout { size, location, .. } = taffy.layout(node0).unwrap();
68    assert_eq!(size.width, 160f32, "width of node {:?}. Expected {}. Actual {}", node0.data(), 160f32, size.width);
69    assert_eq!(size.height, 10f32, "height of node {:?}. Expected {}. Actual {}", node0.data(), 10f32, size.height);
70    assert_eq!(location.x, 0f32, "x of node {:?}. Expected {}. Actual {}", node0.data(), 0f32, location.x);
71    assert_eq!(location.y, 0f32, "y of node {:?}. Expected {}. Actual {}", node0.data(), 0f32, location.y);
72    let Layout { size, location, .. } = taffy.layout(node00).unwrap();
73    assert_eq!(size.width, 80f32, "width of node {:?}. Expected {}. Actual {}", node00.data(), 80f32, size.width);
74    assert_eq!(size.height, 10f32, "height of node {:?}. Expected {}. Actual {}", node00.data(), 10f32, size.height);
75    assert_eq!(location.x, 0f32, "x of node {:?}. Expected {}. Actual {}", node00.data(), 0f32, location.x);
76    assert_eq!(location.y, 0f32, "y of node {:?}. Expected {}. Actual {}", node00.data(), 0f32, location.y);
77    let Layout { size, location, .. } = taffy.layout(node01).unwrap();
78    assert_eq!(size.width, 80f32, "width of node {:?}. Expected {}. Actual {}", node01.data(), 80f32, size.width);
79    assert_eq!(size.height, 10f32, "height of node {:?}. Expected {}. Actual {}", node01.data(), 10f32, size.height);
80    assert_eq!(location.x, 80f32, "x of node {:?}. Expected {}. Actual {}", node01.data(), 80f32, location.x);
81    assert_eq!(location.y, 0f32, "y of node {:?}. Expected {}. Actual {}", node01.data(), 0f32, location.y);
82}