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https://github.com/ratatui/ratatui.git
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2cfe82a47e
- Simplify `assert_buffer_eq!` logic. - Deprecate `assert_buffer_eq!`. - Introduce `TestBackend::assert_buffer_lines`. Also simplify many tests involving buffer comparisons. For the deprecation, just use `assert_eq` instead of `assert_buffer_eq`: ```diff -assert_buffer_eq!(actual, expected); +assert_eq!(actual, expected); ``` --- I noticed `assert_buffer_eq!` creating no test coverage reports and looked into this macro. First I simplified it. Then I noticed a bunch of `assert_eq!(buffer, …)` and other indirect usages of this macro (like `TestBackend::assert_buffer`). The good thing here is that it's mainly used in tests so not many changes to the library code.
113 lines
2.8 KiB
Rust
113 lines
2.8 KiB
Rust
use std::io;
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use ratatui::{
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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, Stylize},
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widgets::{BarChart, Block, Paragraph},
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Terminal,
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};
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#[test]
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fn barchart_can_be_stylized() {
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let barchart = BarChart::default()
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.on_white()
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.bar_style(Style::new().red())
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.bar_width(2)
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.value_style(Style::new().green())
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.label_style(Style::new().blue())
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.data(&[("A", 1), ("B", 2), ("C", 3)])
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.max(3);
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let area = Rect::new(0, 0, 9, 5);
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let mut terminal = Terminal::new(TestBackend::new(9, 6)).unwrap();
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terminal
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.draw(|f| {
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f.render_widget(barchart, area);
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})
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.unwrap();
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let mut expected = Buffer::with_lines([
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" ██ ",
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" ▅▅ ██ ",
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"▂▂ ██ ██ ",
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"1█ 2█ 3█ ",
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"A B C ",
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" ",
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]);
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for y in area.y..area.height {
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// background
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for x in area.x..area.width {
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expected.get_mut(x, y).set_bg(Color::White);
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}
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// bars
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for x in [0, 1, 3, 4, 6, 7] {
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expected.get_mut(x, y).set_fg(Color::Red);
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}
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}
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// values
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for x in 0..3 {
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expected.get_mut(x * 3, 3).set_fg(Color::Green);
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}
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// labels
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for x in 0..3 {
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expected.get_mut(x * 3, 4).set_fg(Color::Blue);
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expected.get_mut(x * 3 + 1, 4).set_fg(Color::Reset);
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}
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terminal.backend().assert_buffer(&expected);
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}
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#[test]
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fn block_can_be_stylized() -> io::Result<()> {
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let block = Block::bordered()
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.title("Title".light_blue())
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.on_cyan()
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.cyan();
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let area = Rect::new(0, 0, 8, 3);
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let mut terminal = Terminal::new(TestBackend::new(11, 4))?;
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terminal.draw(|f| {
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f.render_widget(block, area);
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})?;
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#[rustfmt::skip]
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let mut expected = Buffer::with_lines([
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"┌Title─┐ ",
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"│ │ ",
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"└──────┘ ",
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" ",
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]);
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for x in area.x..area.width {
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for y in area.y..area.height {
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expected
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.get_mut(x, y)
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.set_fg(Color::Cyan)
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.set_bg(Color::Cyan);
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}
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}
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for x in 1..=5 {
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expected.get_mut(x, 0).set_fg(Color::LightBlue);
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}
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terminal.backend().assert_buffer(&expected);
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Ok(())
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}
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#[test]
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fn paragraph_can_be_stylized() -> io::Result<()> {
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let paragraph = Paragraph::new("Text".cyan());
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let area = Rect::new(0, 0, 10, 1);
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let mut terminal = Terminal::new(TestBackend::new(10, 1))?;
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terminal.draw(|f| {
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f.render_widget(paragraph, area);
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})?;
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let mut expected = Buffer::with_lines(["Text "]);
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for x in 0..4 {
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expected.get_mut(x, 0).set_fg(Color::Cyan);
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}
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terminal.backend().assert_buffer(&expected);
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Ok(())
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}
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