tawasuyu/taffy

1#[test]
2fn flex_grow_within_constrained_max_row() {
3    #[allow(unused_imports)]
4    use taffy::{prelude::*, tree::Layout, TaffyTree};
5    let mut taffy: TaffyTree<crate::TextMeasure> = TaffyTree::new();
6    let node00 = taffy
7        .new_leaf(taffy::style::Style {
8            flex_shrink: 1f32,
9            flex_basis: taffy::style::Dimension::Length(100f32),
10            ..Default::default()
11        })
12        .unwrap();
13    let node01 = taffy
14        .new_leaf(taffy::style::Style {
15            size: taffy::geometry::Size { width: taffy::style::Dimension::Length(50f32), height: auto() },
16            ..Default::default()
17        })
18        .unwrap();
19    let node0 = taffy
20        .new_with_children(
21            taffy::style::Style {
22                size: taffy::geometry::Size { width: auto(), height: taffy::style::Dimension::Length(100f32) },
23                max_size: taffy::geometry::Size { width: taffy::style::Dimension::Length(100f32), height: auto() },
24                ..Default::default()
25            },
26            &[node00, node01],
27        )
28        .unwrap();
29    let node = taffy
30        .new_with_children(
31            taffy::style::Style {
32                flex_direction: taffy::style::FlexDirection::Column,
33                size: taffy::geometry::Size { width: taffy::style::Dimension::Length(200f32), height: auto() },
34                ..Default::default()
35            },
36            &[node0],
37        )
38        .unwrap();
39    taffy.compute_layout_with_measure(node, taffy::geometry::Size::MAX_CONTENT, crate::test_measure_function).unwrap();
40    println!("\nComputed tree:");
41    taffy.print_tree(node);
42    println!();
43    #[cfg_attr(not(feature = "content_size"), allow(unused_variables))]
44    let layout @ Layout { size, location, .. } = taffy.layout(node).unwrap();
45    assert_eq!(size.width, 200f32, "width of node {:?}. Expected {}. Actual {}", node, 200f32, size.width);
46    assert_eq!(size.height, 100f32, "height of node {:?}. Expected {}. Actual {}", node, 100f32, size.height);
47    assert_eq!(location.x, 0f32, "x of node {:?}. Expected {}. Actual {}", node, 0f32, location.x);
48    assert_eq!(location.y, 0f32, "y of node {:?}. Expected {}. Actual {}", node, 0f32, location.y);
49    #[cfg(feature = "content_size")]
50    assert_eq!(
51        layout.scroll_width(),
52        0f32,
53        "scroll_width of node {:?}. Expected {}. Actual {}",
54        node,
55        0f32,
56        layout.scroll_width()
57    );
58    #[cfg(feature = "content_size")]
59    assert_eq!(
60        layout.scroll_height(),
61        0f32,
62        "scroll_height of node {:?}. Expected {}. Actual {}",
63        node,
64        0f32,
65        layout.scroll_height()
66    );
67    #[cfg_attr(not(feature = "content_size"), allow(unused_variables))]
68    let layout @ Layout { size, location, .. } = taffy.layout(node0).unwrap();
69    assert_eq!(size.width, 100f32, "width of node {:?}. Expected {}. Actual {}", node0, 100f32, size.width);
70    assert_eq!(size.height, 100f32, "height of node {:?}. Expected {}. Actual {}", node0, 100f32, size.height);
71    assert_eq!(location.x, 0f32, "x of node {:?}. Expected {}. Actual {}", node0, 0f32, location.x);
72    assert_eq!(location.y, 0f32, "y of node {:?}. Expected {}. Actual {}", node0, 0f32, location.y);
73    #[cfg(feature = "content_size")]
74    assert_eq!(
75        layout.scroll_width(),
76        0f32,
77        "scroll_width of node {:?}. Expected {}. Actual {}",
78        node0,
79        0f32,
80        layout.scroll_width()
81    );
82    #[cfg(feature = "content_size")]
83    assert_eq!(
84        layout.scroll_height(),
85        0f32,
86        "scroll_height of node {:?}. Expected {}. Actual {}",
87        node0,
88        0f32,
89        layout.scroll_height()
90    );
91    #[cfg_attr(not(feature = "content_size"), allow(unused_variables))]
92    let layout @ Layout { size, location, .. } = taffy.layout(node00).unwrap();
93    assert_eq!(size.width, 67f32, "width of node {:?}. Expected {}. Actual {}", node00, 67f32, size.width);
94    assert_eq!(size.height, 100f32, "height of node {:?}. Expected {}. Actual {}", node00, 100f32, size.height);
95    assert_eq!(location.x, 0f32, "x of node {:?}. Expected {}. Actual {}", node00, 0f32, location.x);
96    assert_eq!(location.y, 0f32, "y of node {:?}. Expected {}. Actual {}", node00, 0f32, location.y);
97    #[cfg(feature = "content_size")]
98    assert_eq!(
99        layout.scroll_width(),
100        0f32,
101        "scroll_width of node {:?}. Expected {}. Actual {}",
102        node00,
103        0f32,
104        layout.scroll_width()
105    );
106    #[cfg(feature = "content_size")]
107    assert_eq!(
108        layout.scroll_height(),
109        0f32,
110        "scroll_height of node {:?}. Expected {}. Actual {}",
111        node00,
112        0f32,
113        layout.scroll_height()
114    );
115    #[cfg_attr(not(feature = "content_size"), allow(unused_variables))]
116    let layout @ Layout { size, location, .. } = taffy.layout(node01).unwrap();
117    assert_eq!(size.width, 33f32, "width of node {:?}. Expected {}. Actual {}", node01, 33f32, size.width);
118    assert_eq!(size.height, 100f32, "height of node {:?}. Expected {}. Actual {}", node01, 100f32, size.height);
119    assert_eq!(location.x, 67f32, "x of node {:?}. Expected {}. Actual {}", node01, 67f32, location.x);
120    assert_eq!(location.y, 0f32, "y of node {:?}. Expected {}. Actual {}", node01, 0f32, location.y);
121    #[cfg(feature = "content_size")]
122    assert_eq!(
123        layout.scroll_width(),
124        0f32,
125        "scroll_width of node {:?}. Expected {}. Actual {}",
126        node01,
127        0f32,
128        layout.scroll_width()
129    );
130    #[cfg(feature = "content_size")]
131    assert_eq!(
132        layout.scroll_height(),
133        0f32,
134        "scroll_height of node {:?}. Expected {}. Actual {}",
135        node01,
136        0f32,
137        layout.scroll_height()
138    );
139}