helix-mirror/helix-tui/tests/widgets_list.rs

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2021-05-10 12:30:06 +04:00
// use helix_tui::{
// backend::TestBackend,
// buffer::Buffer,
// layout::Rect,
// style::{Color, Style},
// symbols,
// widgets::{Block, Borders, List, ListItem, ListState},
// Terminal,
// };
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// #[test]
// fn widgets_list_should_highlight_the_selected_item() {
// let backend = TestBackend::new(10, 3);
// let mut terminal = Terminal::new(backend).unwrap();
// let mut state = ListState::default();
// state.select(Some(1));
// terminal
// .draw(|f| {
// let size = f.size();
// let items = vec![
// ListItem::new("Item 1"),
// ListItem::new("Item 2"),
// ListItem::new("Item 3"),
// ];
// let list = List::new(items)
// .highlight_style(Style::default().bg(Color::Yellow))
// .highlight_symbol(">> ");
// f.render_stateful_widget(list, size, &mut state);
// })
// .unwrap();
// let mut expected = Buffer::with_lines(vec![" Item 1 ", ">> Item 2 ", " Item 3 "]);
// for x in 0..10 {
// expected.get_mut(x, 1).set_bg(Color::Yellow);
// }
// terminal.backend().assert_buffer(&expected);
// }
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// #[test]
// fn widgets_list_should_truncate_items() {
// let backend = TestBackend::new(10, 2);
// let mut terminal = Terminal::new(backend).unwrap();
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// struct TruncateTestCase<'a> {
// selected: Option<usize>,
// items: Vec<ListItem<'a>>,
// expected: Buffer,
// }
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// let cases = vec![
// // An item is selected
// TruncateTestCase {
// selected: Some(0),
// items: vec![
// ListItem::new("A very long line"),
// ListItem::new("A very long line"),
// ],
// expected: Buffer::with_lines(vec![
// format!(">> A ve{} ", symbols::line::VERTICAL),
// format!(" A ve{} ", symbols::line::VERTICAL),
// ]),
// },
// // No item is selected
// TruncateTestCase {
// selected: None,
// items: vec![
// ListItem::new("A very long line"),
// ListItem::new("A very long line"),
// ],
// expected: Buffer::with_lines(vec![
// format!("A very {} ", symbols::line::VERTICAL),
// format!("A very {} ", symbols::line::VERTICAL),
// ]),
// },
// ];
// for case in cases {
// let mut state = ListState::default();
// state.select(case.selected);
// terminal
// .draw(|f| {
// let list = List::new(case.items.clone())
// .block(Block::default().borders(Borders::RIGHT))
// .highlight_symbol(">> ");
// f.render_stateful_widget(list, Rect::new(0, 0, 8, 2), &mut state);
// })
// .unwrap();
// terminal.backend().assert_buffer(&case.expected);
// }
// }