86 lines
2.6 KiB
Rust
86 lines
2.6 KiB
Rust
// Snapshot testing utilities
|
||
|
||
use ratatui::backend::TestBackend;
|
||
use ratatui::buffer::Buffer;
|
||
use ratatui::layout::Rect;
|
||
use ratatui::Terminal;
|
||
|
||
/// Конвертирует Buffer в читаемую строку для snapshot тестов
|
||
pub fn buffer_to_string(buffer: &Buffer) -> String {
|
||
let area = buffer.area();
|
||
let mut result = String::new();
|
||
|
||
for y in 0..area.height {
|
||
let mut line = String::new();
|
||
for x in 0..area.width {
|
||
line.push_str(buffer[(x, y)].symbol());
|
||
}
|
||
// Убираем trailing spaces в конце строки
|
||
result.push_str(line.trim_end());
|
||
if y < area.height - 1 {
|
||
result.push('\n');
|
||
}
|
||
}
|
||
|
||
result
|
||
}
|
||
|
||
/// Создаёт TestBackend с заданным размером и рендерит UI
|
||
pub fn render_to_buffer<F>(width: u16, height: u16, render_fn: F) -> Buffer
|
||
where
|
||
F: FnOnce(&mut ratatui::Frame),
|
||
{
|
||
let backend = TestBackend::new(width, height);
|
||
let mut terminal = Terminal::new(backend).unwrap();
|
||
|
||
terminal.draw(render_fn).unwrap();
|
||
|
||
terminal.backend().buffer().clone()
|
||
}
|
||
|
||
/// Макрос для упрощения snapshot тестов
|
||
#[macro_export]
|
||
macro_rules! assert_ui_snapshot {
|
||
($name:expr, $width:expr, $height:expr, $render_fn:expr) => {{
|
||
use $crate::helpers::snapshot_utils::{buffer_to_string, render_to_buffer};
|
||
let buffer = render_to_buffer($width, $height, $render_fn);
|
||
let output = buffer_to_string(&buffer);
|
||
insta::assert_snapshot!($name, output);
|
||
}};
|
||
}
|
||
|
||
#[cfg(test)]
|
||
mod tests {
|
||
use super::*;
|
||
use ratatui::widgets::{Block, Borders};
|
||
|
||
#[test]
|
||
fn test_buffer_to_string_simple() {
|
||
let buffer = render_to_buffer(10, 3, |f| {
|
||
let block = Block::default().borders(Borders::ALL).title("Hi");
|
||
f.render_widget(block, f.area());
|
||
});
|
||
|
||
let result = buffer_to_string(&buffer);
|
||
assert!(result.contains("Hi"));
|
||
assert!(result.contains("┌"));
|
||
assert!(result.contains("└"));
|
||
}
|
||
|
||
#[test]
|
||
fn test_buffer_to_string_removes_trailing_spaces() {
|
||
let buffer = render_to_buffer(20, 3, |f| {
|
||
let block = Block::default().title("Test");
|
||
f.render_widget(block, Rect::new(0, 0, 10, 3));
|
||
});
|
||
|
||
let result = buffer_to_string(&buffer);
|
||
let lines: Vec<&str> = result.lines().collect();
|
||
|
||
// Проверяем что trailing spaces убраны
|
||
for line in lines {
|
||
assert!(!line.ends_with(' ') || line.trim().is_empty());
|
||
}
|
||
}
|
||
}
|