62 lines
1.7 KiB
Rust
62 lines
1.7 KiB
Rust
use ratatui::Terminal;
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use ratatui::backend::TestBackend;
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use ratatui::buffer::Buffer;
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use ratatui::layout::Rect;
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use ratatui::style::Style;
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use ratatui::widgets::{Block, Borders, List, ListItem, ListState};
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fn render_list_into_buffer(
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lines: &[&str],
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marked: &[bool],
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selected: Option<usize>,
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width: u16,
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height: u16,
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) -> Buffer {
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let backend = TestBackend::new(width, height);
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let mut terminal = Terminal::new(backend).expect("create terminal");
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let lines_vec: Vec<ListItem> = lines
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.iter()
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.zip(marked.iter())
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.map(|(text, marked)| {
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let prefix = if *marked { 'x' } else { ' ' };
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ListItem::new(format!("[{prefix}] {text}"))
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})
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.collect();
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let mut state = ListState::default();
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state.select(selected);
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terminal
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.draw(|f| {
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let size = Rect::new(0, 0, width, height);
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let list = List::new(lines_vec.clone())
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.block(
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Block::default()
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.borders(Borders::ALL)
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.title("Lines (space to mark, q to quit)"),
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)
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.highlight_style(Style::default());
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f.render_stateful_widget(list, size, &mut state);
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})
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.expect("draw");
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// Extract the underlying backend buffer (clone to own it)
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let backend = terminal.backend();
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backend.buffer().clone()
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}
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#[test]
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fn ui_snapshot_basic() {
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let lines = ["first", "second", "third"];
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let marked = [false, true, false];
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let buf = render_list_into_buffer(&lines, &marked, Some(1), 40, 10);
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// Use the buffer's debug representation for snapshotting
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let out = format!("{buf:#?}");
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insta::assert_snapshot!(out);
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}
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