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fix(buffer): fix Debug panic and fix formatting of overridden parts (#1098)

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Fix panic in `Debug for Buffer` when `width == 0`.
Also corrects the output when symbols are overridden.
This commit is contained in:
EdJoPaTo 2024-05-12 23:57:40 +02:00 committed by GitHub
parent ec763af851
commit 366cbae09f
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GPG key ID: B5690EEEBB952194
1 changed files with 74 additions and 42 deletions
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82
src/buffer/buffer.rs
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@ -381,10 +381,13 @@ impl fmt::Debug for Buffer {
/// * `styles`: displayed as a list of: `{ x: 1, y: 2, fg: Color::Red, bg: Color::Blue,
/// modifier: Modifier::BOLD }` only showing a value when there is a change in style.
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
f.write_fmt(format_args!(
"Buffer {{\n area: {:?},\n content: [\n",
&self.area
))?;
f.write_fmt(format_args!("Buffer {{\n area: {:?}", &self.area))?;
if self.area.is_empty() {
return f.write_str("\n}");
}
f.write_str(",\n content: [\n")?;
let mut last_style = None;
let mut styles = vec![];
for (y, line) in self.content.chunks(self.area.width as usize).enumerate() {
@ -415,12 +418,13 @@ impl fmt::Debug for Buffer {
}
}
}
f.write_str("\",")?;
if !overwritten.is_empty() {
f.write_fmt(format_args!(
" // hidden by multi-width symbols: {overwritten:?}"
))?;
}
f.write_str("\",\n")?;
f.write_str("\n")?;
}
f.write_str(" ],\n styles: [\n")?;
for s in styles {
@ -457,10 +461,40 @@ mod tests {
}
#[test]
fn debug() {
let mut buf = Buffer::empty(Rect::new(0, 0, 12, 2));
buf.set_string(0, 0, "Hello World!", Style::default());
buf.set_string(
fn debug_empty_buffer() {
let buffer = Buffer::empty(Rect::ZERO);
let result = format!("{buffer:?}");
println!("{result}");
let expected = "Buffer {\n area: Rect { x: 0, y: 0, width: 0, height: 0 }\n}";
assert_eq!(result, expected);
}
#[cfg(feature = "underline-color")]
#[test]
fn debug_grapheme_override() {
let buffer = Buffer::with_lines(["a🦀b"]);
let result = format!("{buffer:?}");
println!("{result}");
let expected = indoc::indoc!(
r#"
Buffer {
area: Rect { x: 0, y: 0, width: 4, height: 1 },
content: [
"a🦀b", // hidden by multi-width symbols: [(2, " ")]
],
styles: [
x: 0, y: 0, fg: Reset, bg: Reset, underline: Reset, modifier: NONE,
]
}"#
);
assert_eq!(result, expected);
}
#[test]
fn debug_some_example() {
let mut buffer = Buffer::empty(Rect::new(0, 0, 12, 2));
buffer.set_string(0, 0, "Hello World!", Style::default());
buffer.set_string(
0,
1,
"G'day World!",
@ -469,42 +503,40 @@ mod tests {
.bg(Color::Yellow)
.add_modifier(Modifier::BOLD),
);
let result = format!("{buffer:?}");
println!("{result}");
#[cfg(feature = "underline-color")]
assert_eq!(
format!("{buf:?}"),
indoc::indoc!(
"
let expected = indoc::indoc!(
r#"
Buffer {
area: Rect { x: 0, y: 0, width: 12, height: 2 },
content: [
\"Hello World!\",
\"G'day World!\",
"Hello World!",
"G'day World!",
],
styles: [
x: 0, y: 0, fg: Reset, bg: Reset, underline: Reset, modifier: NONE,
x: 0, y: 1, fg: Green, bg: Yellow, underline: Reset, modifier: BOLD,
]
}"
)
}"#
);
#[cfg(not(feature = "underline-color"))]
assert_eq!(
format!("{buf:?}"),
indoc::indoc!(
"
let expected = indoc::indoc!(
r#"
Buffer {
area: Rect { x: 0, y: 0, width: 12, height: 2 },
content: [
\"Hello World!\",
\"G'day World!\",
"Hello World!",
"G'day World!",
],
styles: [
x: 0, y: 0, fg: Reset, bg: Reset, modifier: NONE,
x: 0, y: 1, fg: Green, bg: Yellow, modifier: BOLD,
]
}"
)
}"#
);
assert_eq!(result, expected);
}
#[test]