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use tui::layout::Alignment;
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use tui::{
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backend::TestBackend,
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buffer::Buffer,
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layout::Rect,
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style::{Color, Style},
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symbols,
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text::Span,
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widgets::{Axis, Block, Borders, Chart, Dataset, GraphType::Line},
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Terminal,
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};
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fn create_labels<'a>(labels: &'a [&'a str]) -> Vec<Span<'a>> {
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labels.iter().map(|l| Span::from(*l)).collect()
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}
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fn axis_test_case<S>(width: u16, height: u16, x_axis: Axis, y_axis: Axis, lines: Vec<S>)
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where
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S: AsRef<str>,
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{
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let backend = TestBackend::new(width, height);
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let mut terminal = Terminal::new(backend).unwrap();
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terminal
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.draw(|f| {
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let chart = Chart::new(vec![]).x_axis(x_axis).y_axis(y_axis);
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f.render_widget(chart, f.size());
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})
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.unwrap();
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let expected = Buffer::with_lines(lines);
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terminal.backend().assert_buffer(&expected);
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}
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#[test]
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fn widgets_chart_can_render_on_small_areas() {
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let test_case = |width, height| {
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let backend = TestBackend::new(width, height);
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let mut terminal = Terminal::new(backend).unwrap();
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terminal
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.draw(|f| {
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let datasets = vec![Dataset::default()
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.marker(symbols::Marker::Braille)
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.style(Style::default().fg(Color::Magenta))
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.data(&[(0.0, 0.0)])];
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let chart = Chart::new(datasets)
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.block(Block::default().title("Plot").borders(Borders::ALL))
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.x_axis(
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Axis::default()
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.bounds([0.0, 0.0])
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.labels(create_labels(&["0.0", "1.0"])),
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)
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.y_axis(
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Axis::default()
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.bounds([0.0, 0.0])
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.labels(create_labels(&["0.0", "1.0"])),
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);
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f.render_widget(chart, f.size());
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})
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.unwrap();
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};
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test_case(0, 0);
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test_case(0, 1);
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test_case(1, 0);
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test_case(1, 1);
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test_case(2, 2);
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}
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#[test]
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fn widgets_chart_handles_long_labels() {
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let test_case = |x_labels, y_labels, x_alignment, lines| {
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let mut x_axis = Axis::default().bounds([0.0, 1.0]);
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if let Some((left_label, right_label)) = x_labels {
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x_axis = x_axis
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.labels(vec![Span::from(left_label), Span::from(right_label)])
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.labels_alignment(x_alignment);
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}
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let mut y_axis = Axis::default().bounds([0.0, 1.0]);
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if let Some((left_label, right_label)) = y_labels {
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y_axis = y_axis.labels(vec![Span::from(left_label), Span::from(right_label)]);
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}
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axis_test_case(10, 5, x_axis, y_axis, lines);
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};
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test_case(
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Some(("AAAA", "B")),
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None,
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Alignment::Left,
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vec![
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" ",
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" ",
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" ",
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" ───────",
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"AAA B",
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],
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);
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test_case(
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Some(("A", "BBBB")),
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None,
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Alignment::Left,
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vec![
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" ",
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" ",
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" ",
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" ─────────",
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"A BBBB",
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],
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);
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test_case(
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Some(("AAAAAAAAAAA", "B")),
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None,
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Alignment::Left,
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vec![
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" ",
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" ",
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" ",
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" ───────",
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"AAA B",
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],
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);
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test_case(
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Some(("A", "B")),
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Some(("CCCCCCC", "D")),
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Alignment::Left,
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vec![
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"D │ ",
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" │ ",
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"CCC│ ",
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" └──────",
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" A B",
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],
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);
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test_case(
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Some(("AAAAAAAAAA", "B")),
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Some(("C", "D")),
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Alignment::Center,
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vec![
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"D │ ",
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" │ ",
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"C │ ",
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" └──────",
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"AAAAAAA B",
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],
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);
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test_case(
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Some(("AAAAAAA", "B")),
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Some(("C", "D")),
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Alignment::Right,
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vec![
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"D│ ",
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" │ ",
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"C│ ",
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" └────────",
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" AAAAA B",
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],
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);
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test_case(
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Some(("AAAAAAA", "BBBBBBB")),
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Some(("C", "D")),
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Alignment::Right,
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vec![
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"D│ ",
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" │ ",
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"C│ ",
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" └────────",
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" AAAAABBBB",
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],
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);
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}
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#[test]
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fn widgets_chart_handles_x_axis_labels_alignments() {
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let test_case = |y_alignment, lines| {
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let x_axis = Axis::default()
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.labels(vec![Span::from("AAAA"), Span::from("B"), Span::from("C")])
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.labels_alignment(y_alignment);
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let y_axis = Axis::default();
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axis_test_case(10, 5, x_axis, y_axis, lines);
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};
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test_case(
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Alignment::Left,
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vec![
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" ",
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" ",
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" ",
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" ───────",
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"AAA B C",
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],
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);
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test_case(
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Alignment::Center,
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vec![
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" ",
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" ",
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" ",
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" ────────",
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"AAAA B C",
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],
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);
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test_case(
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Alignment::Right,
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vec![
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" ",
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" ",
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" ",
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"──────────",
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"AAA B C",
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],
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);
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}
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#[test]
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fn widgets_chart_handles_y_axis_labels_alignments() {
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let test_case = |y_alignment, lines| {
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let x_axis = Axis::default().labels(create_labels(&["AAAAA", "B"]));
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let y_axis = Axis::default()
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.labels(create_labels(&["C", "D"]))
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.labels_alignment(y_alignment);
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axis_test_case(20, 5, x_axis, y_axis, lines);
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};
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test_case(
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Alignment::Left,
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vec![
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"D │ ",
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" │ ",
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"C │ ",
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" └───────────────",
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"AAAAA B",
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],
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);
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test_case(
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Alignment::Center,
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vec![
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" D │ ",
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" │ ",
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" C │ ",
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" └───────────────",
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"AAAAA B",
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],
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);
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test_case(
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Alignment::Right,
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vec![
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" D│ ",
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" │ ",
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" C│ ",
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" └───────────────",
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"AAAAA B",
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],
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);
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}
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#[test]
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fn widgets_chart_can_have_axis_with_zero_length_bounds() {
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let backend = TestBackend::new(100, 100);
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let mut terminal = Terminal::new(backend).unwrap();
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terminal
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.draw(|f| {
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let datasets = vec![Dataset::default()
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.marker(symbols::Marker::Braille)
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.style(Style::default().fg(Color::Magenta))
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.data(&[(0.0, 0.0)])];
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let chart = Chart::new(datasets)
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.block(Block::default().title("Plot").borders(Borders::ALL))
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.x_axis(
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Axis::default()
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.bounds([0.0, 0.0])
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.labels(create_labels(&["0.0", "1.0"])),
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)
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.y_axis(
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Axis::default()
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.bounds([0.0, 0.0])
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.labels(create_labels(&["0.0", "1.0"])),
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);
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f.render_widget(
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chart,
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Rect {
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x: 0,
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y: 0,
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width: 100,
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height: 100,
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},
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);
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})
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.unwrap();
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}
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#[test]
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fn widgets_chart_handles_overflows() {
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let backend = TestBackend::new(80, 30);
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let mut terminal = Terminal::new(backend).unwrap();
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terminal
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.draw(|f| {
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let datasets = vec![Dataset::default()
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.marker(symbols::Marker::Braille)
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.style(Style::default().fg(Color::Magenta))
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.data(&[
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(1_588_298_471.0, 1.0),
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(1_588_298_473.0, 0.0),
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(1_588_298_496.0, 1.0),
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])];
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let chart = Chart::new(datasets)
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.block(Block::default().title("Plot").borders(Borders::ALL))
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.x_axis(
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Axis::default()
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.bounds([1_588_298_471.0, 1_588_992_600.0])
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.labels(create_labels(&["1588298471.0", "1588992600.0"])),
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)
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.y_axis(
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Axis::default()
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.bounds([0.0, 1.0])
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.labels(create_labels(&["0.0", "1.0"])),
|
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);
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f.render_widget(
|
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|
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chart,
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|
Rect {
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x: 0,
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|
|
y: 0,
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|
width: 80,
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height: 30,
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},
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);
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})
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.unwrap();
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|
}
|
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|
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|
|
|
|
#[test]
|
|
|
|
|
fn widgets_chart_can_have_empty_datasets() {
|
|
|
|
|
let backend = TestBackend::new(100, 100);
|
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|
|
|
let mut terminal = Terminal::new(backend).unwrap();
|
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|
|
|
|
|
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|
|
terminal
|
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.draw(|f| {
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|
|
|
let datasets = vec![Dataset::default().data(&[]).graph_type(Line)];
|
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|
|
|
let chart = Chart::new(datasets)
|
|
|
|
|
.block(
|
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|
|
Block::default()
|
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|
|
|
.title("Empty Dataset With Line")
|
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|
|
|
.borders(Borders::ALL),
|
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|
)
|
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|
|
|
.x_axis(
|
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|
|
|
Axis::default()
|
|
|
|
|
.bounds([0.0, 0.0])
|
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|
|
|
.labels(create_labels(&["0.0", "1.0"])),
|
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|
|
)
|
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|
|
|
.y_axis(
|
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|
|
|
Axis::default()
|
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.bounds([0.0, 1.0])
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.labels(create_labels(&["0.0", "1.0"])),
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);
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f.render_widget(
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chart,
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Rect {
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x: 0,
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y: 0,
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width: 100,
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height: 100,
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},
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|
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|
);
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|
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|
})
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|
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|
.unwrap();
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|
|
|
|
}
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|
|
|
|
|
#[test]
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fn widgets_chart_can_have_a_legend() {
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let backend = TestBackend::new(60, 30);
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let mut terminal = Terminal::new(backend).unwrap();
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terminal
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|
.draw(|f| {
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let datasets = vec![
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Dataset::default()
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|
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|
.name("Dataset 1")
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|
.style(Style::default().fg(Color::Blue))
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.data(&[
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(0.0, 0.0),
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(10.0, 1.0),
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(20.0, 2.0),
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(30.0, 3.0),
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(40.0, 4.0),
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(50.0, 5.0),
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(60.0, 6.0),
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(70.0, 7.0),
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(80.0, 8.0),
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(90.0, 9.0),
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(100.0, 10.0),
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|
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|
])
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|
.graph_type(Line),
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Dataset::default()
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|
.name("Dataset 2")
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|
.style(Style::default().fg(Color::Green))
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.data(&[
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|
(0.0, 10.0),
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|
(10.0, 9.0),
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|
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|
(20.0, 8.0),
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|
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|
(30.0, 7.0),
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(40.0, 6.0),
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|
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|
(50.0, 5.0),
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(60.0, 4.0),
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(70.0, 3.0),
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|
|
|
(80.0, 2.0),
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|
|
|
(90.0, 1.0),
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|
|
|
(100.0, 0.0),
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|
|
|
])
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|
.graph_type(Line),
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|
|
|
];
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|
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let chart = Chart::new(datasets)
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|
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|
.style(Style::default().bg(Color::White))
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|
|
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|
.block(Block::default().title("Chart Test").borders(Borders::ALL))
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|
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|
.x_axis(
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|
|
|
Axis::default()
|
|
|
|
|
.bounds([0.0, 100.0])
|
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|
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.title(Span::styled("X Axis", Style::default().fg(Color::Yellow)))
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|
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.labels(create_labels(&["0.0", "50.0", "100.0"])),
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|
|
|
)
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.y_axis(
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Axis::default()
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|
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|
.bounds([0.0, 10.0])
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.title("Y Axis")
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.labels(create_labels(&["0.0", "5.0", "10.0"])),
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|
|
|
);
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f.render_widget(
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|
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chart,
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Rect {
|
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|
x: 0,
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|
|
y: 0,
|
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|
|
width: 60,
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|
height: 30,
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|
|
},
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|
|
|
);
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|
|
})
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.unwrap();
|
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|
|
|
let mut expected = Buffer::with_lines(vec![
|
|
|
|
|
"┌Chart Test────────────────────────────────────────────────┐",
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|
|
|
"│10.0│Y Axis ┌─────────┐│",
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|
|
|
"│ │ •• │Dataset 1││",
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|
|
"│ │ •• │Dataset 2││",
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|
|
|
"│ │ •• └─────────┘│",
|
|
|
|
|
"│ │ •• •• │",
|
|
|
|
|
"│ │ •• •• │",
|
|
|
|
|
"│ │ •• •• │",
|
|
|
|
|
"│ │ •• •• │",
|
|
|
|
|
"│ │ •• •• │",
|
|
|
|
|
"│ │ •• •• │",
|
|
|
|
|
"│ │ •• •• │",
|
|
|
|
|
"│ │ ••• •• │",
|
|
|
|
|
"│ │ ••• │",
|
|
|
|
|
"│5.0 │ •• •• │",
|
|
|
|
|
"│ │ •• •• │",
|
|
|
|
|
"│ │ ••• •• │",
|
|
|
|
|
"│ │ •• •• │",
|
|
|
|
|
"│ │ •• •• │",
|
|
|
|
|
"│ │ •• •• │",
|
|
|
|
|
"│ │ •• •• │",
|
|
|
|
|
"│ │ •• •• │",
|
|
|
|
|
"│ │ •• •• │",
|
|
|
|
|
"│ │ •• ••• │",
|
|
|
|
|
"│ │ •• •• │",
|
|
|
|
|
"│ │ •• •• │",
|
|
|
|
|
"│0.0 │• X Axis│",
|
|
|
|
|
"│ └─────────────────────────────────────────────────────│",
|
|
|
|
|
"│ 0.0 50.0 100.0│",
|
|
|
|
|
"└──────────────────────────────────────────────────────────┘",
|
|
|
|
|
]);
|
|
|
|
|
|
|
|
|
|
// Set expected backgound color
|
|
|
|
|
for row in 0..30 {
|
|
|
|
|
for col in 0..60 {
|
|
|
|
|
expected.get_mut(col, row).set_bg(Color::White);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
// Set expected colors of the first dataset
|
|
|
|
|
let line1 = vec![
|
|
|
|
|
(48, 5),
|
|
|
|
|
(49, 5),
|
|
|
|
|
(46, 6),
|
|
|
|
|
(47, 6),
|
|
|
|
|
(44, 7),
|
|
|
|
|
(45, 7),
|
|
|
|
|
(42, 8),
|
|
|
|
|
(43, 8),
|
|
|
|
|
(40, 9),
|
|
|
|
|
(41, 9),
|
|
|
|
|
(38, 10),
|
|
|
|
|
(39, 10),
|
|
|
|
|
(36, 11),
|
|
|
|
|
(37, 11),
|
|
|
|
|
(34, 12),
|
|
|
|
|
(35, 12),
|
|
|
|
|
(33, 13),
|
|
|
|
|
(30, 14),
|
|
|
|
|
(31, 14),
|
|
|
|
|
(28, 15),
|
|
|
|
|
(29, 15),
|
|
|
|
|
(25, 16),
|
|
|
|
|
(26, 16),
|
|
|
|
|
(27, 16),
|
|
|
|
|
(23, 17),
|
|
|
|
|
(24, 17),
|
|
|
|
|
(21, 18),
|
|
|
|
|
(22, 18),
|
|
|
|
|
(19, 19),
|
|
|
|
|
(20, 19),
|
|
|
|
|
(17, 20),
|
|
|
|
|
(18, 20),
|
|
|
|
|
(15, 21),
|
|
|
|
|
(16, 21),
|
|
|
|
|
(13, 22),
|
|
|
|
|
(14, 22),
|
|
|
|
|
(11, 23),
|
|
|
|
|
(12, 23),
|
|
|
|
|
(9, 24),
|
|
|
|
|
(10, 24),
|
|
|
|
|
(7, 25),
|
|
|
|
|
(8, 25),
|
|
|
|
|
(6, 26),
|
|
|
|
|
];
|
|
|
|
|
let legend1 = vec![
|
|
|
|
|
(49, 2),
|
|
|
|
|
(50, 2),
|
|
|
|
|
(51, 2),
|
|
|
|
|
(52, 2),
|
|
|
|
|
(53, 2),
|
|
|
|
|
(54, 2),
|
|
|
|
|
(55, 2),
|
|
|
|
|
(56, 2),
|
|
|
|
|
(57, 2),
|
|
|
|
|
];
|
|
|
|
|
for (col, row) in line1 {
|
|
|
|
|
expected.get_mut(col, row).set_fg(Color::Blue);
|
|
|
|
|
}
|
|
|
|
|
for (col, row) in legend1 {
|
|
|
|
|
expected.get_mut(col, row).set_fg(Color::Blue);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
// Set expected colors of the second dataset
|
|
|
|
|
let line2 = vec![
|
|
|
|
|
(8, 2),
|
|
|
|
|
(9, 2),
|
|
|
|
|
(10, 3),
|
|
|
|
|
(11, 3),
|
|
|
|
|
(12, 4),
|
|
|
|
|
(13, 4),
|
|
|
|
|
(14, 5),
|
|
|
|
|
(15, 5),
|
|
|
|
|
(16, 6),
|
|
|
|
|
(17, 6),
|
|
|
|
|
(18, 7),
|
|
|
|
|
(19, 7),
|
|
|
|
|
(20, 8),
|
|
|
|
|
(21, 8),
|
|
|
|
|
(22, 9),
|
|
|
|
|
(23, 9),
|
|
|
|
|
(24, 10),
|
|
|
|
|
(25, 10),
|
|
|
|
|
(26, 11),
|
|
|
|
|
(27, 11),
|
|
|
|
|
(28, 12),
|
|
|
|
|
(29, 12),
|
|
|
|
|
(30, 12),
|
|
|
|
|
(31, 13),
|
|
|
|
|
(32, 13),
|
|
|
|
|
(33, 14),
|
|
|
|
|
(34, 14),
|
|
|
|
|
(35, 15),
|
|
|
|
|
(36, 15),
|
|
|
|
|
(37, 16),
|
|
|
|
|
(38, 16),
|
|
|
|
|
(39, 17),
|
|
|
|
|
(40, 17),
|
|
|
|
|
(41, 18),
|
|
|
|
|
(42, 18),
|
|
|
|
|
(43, 19),
|
|
|
|
|
(44, 19),
|
|
|
|
|
(45, 20),
|
|
|
|
|
(46, 20),
|
|
|
|
|
(47, 21),
|
|
|
|
|
(48, 21),
|
|
|
|
|
(49, 22),
|
|
|
|
|
(50, 22),
|
|
|
|
|
(51, 23),
|
|
|
|
|
(52, 23),
|
|
|
|
|
(53, 23),
|
|
|
|
|
(54, 24),
|
|
|
|
|
(55, 24),
|
|
|
|
|
(56, 25),
|
|
|
|
|
(57, 25),
|
|
|
|
|
];
|
|
|
|
|
let legend2 = vec![
|
|
|
|
|
(49, 3),
|
|
|
|
|
(50, 3),
|
|
|
|
|
(51, 3),
|
|
|
|
|
(52, 3),
|
|
|
|
|
(53, 3),
|
|
|
|
|
(54, 3),
|
|
|
|
|
(55, 3),
|
|
|
|
|
(56, 3),
|
|
|
|
|
(57, 3),
|
|
|
|
|
];
|
|
|
|
|
for (col, row) in line2 {
|
|
|
|
|
expected.get_mut(col, row).set_fg(Color::Green);
|
|
|
|
|
}
|
|
|
|
|
for (col, row) in legend2 {
|
|
|
|
|
expected.get_mut(col, row).set_fg(Color::Green);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
// Set expected colors of the x axis
|
|
|
|
|
let x_axis_title = vec![(53, 26), (54, 26), (55, 26), (56, 26), (57, 26), (58, 26)];
|
|
|
|
|
for (col, row) in x_axis_title {
|
|
|
|
|
expected.get_mut(col, row).set_fg(Color::Yellow);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
terminal.backend().assert_buffer(&expected);
|
|
|
|
|
}
|
