tui/testing/
helpers.rs

1use crossterm::event::{KeyCode, KeyEvent, KeyModifiers};
2
3use crate::rendering::frame::Cursor;
4use crate::rendering::frame::Frame;
5use crate::rendering::renderer::Renderer;
6use crate::{SelectOption, ViewContext};
7
8use super::TestTerminal;
9
10fn frame_from_lines(lines: &[crate::line::Line], _width: u16, _rows: u16) -> Frame {
11    Frame::new(lines.to_vec())
12        .with_cursor(Cursor {
13            row: lines.len().saturating_sub(1),
14            col: 0,
15            is_visible: true,
16        })
17        .clamp_cursor()
18}
19
20pub fn render_component(
21    mut render: impl FnMut(&ViewContext) -> Frame,
22    width: u16,
23    rows: u16,
24) -> TestTerminal {
25    let ctx = ViewContext::new((width, rows));
26    let frame = render(&ctx);
27    let terminal = TestTerminal::new(width, rows);
28    let mut renderer = Renderer::new(terminal, crate::theme::Theme::default(), (width, rows));
29    renderer.render_frame(|_| frame).unwrap();
30    renderer.writer().clone()
31}
32
33pub fn render_component_with_renderer(
34    mut render: impl FnMut(&ViewContext) -> Frame,
35    renderer: &mut Renderer<TestTerminal>,
36    width: u16,
37    rows: u16,
38) {
39    let ctx = ViewContext::new((width, rows));
40    let frame = render(&ctx);
41    renderer.render_frame(|_| frame).unwrap();
42}
43
44pub fn render_lines(lines: &[crate::line::Line], width: u16, rows: u16) -> TestTerminal {
45    render_component(|_| frame_from_lines(lines, width, rows), width, rows)
46}
47
48pub fn key(code: KeyCode) -> KeyEvent {
49    KeyEvent::new(code, KeyModifiers::NONE)
50}
51
52pub fn sample_options() -> Vec<SelectOption> {
53    vec![
54        SelectOption {
55            value: "a".into(),
56            title: "Alpha".into(),
57            description: None,
58        },
59        SelectOption {
60            value: "b".into(),
61            title: "Beta".into(),
62            description: None,
63        },
64        SelectOption {
65            value: "c".into(),
66            title: "Gamma".into(),
67            description: None,
68        },
69    ]
70}
tui/testing/helpers.rs

tui/testing/
helpers.rs
