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uucore/format: add docs and tests for resolve_astrick_ methods

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This commit is contained in:
Joseph Jon Booker 2025-04-05 01:53:11 -05:00
parent 6061b67601
commit 64ce76bdf1
1 changed files with 111 additions and 0 deletions
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111
src/uucore/src/lib/features/format/spec.rs
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@ -474,6 +474,8 @@ impl Spec {
}
}
/// Determine the width, potentially getting a value from args
/// Returns the non-negative width and whether the value should be left-aligned.
fn resolve_asterisk_width<'a>(
option: Option<CanAsterisk<usize>>,
mut args: impl ArgumentIter<'a>,
@ -492,6 +494,8 @@ fn resolve_asterisk_width<'a>(
}
}
/// Determines the precision, which should (if defined)
/// be a non-negative number.
fn resolve_asterisk_precision<'a>(
option: Option<CanAsterisk<usize>>,
mut args: impl ArgumentIter<'a>,
@ -548,3 +552,110 @@ fn eat_number(rest: &mut &[u8], index: &mut usize) -> Option<usize> {
}
}
}
#[cfg(test)]
mod tests {
use super::*;
mod resolve_asterisk_width {
use super::*;
use crate::format::FormatArgument;
#[test]
fn no_width() {
assert_eq!(None, resolve_asterisk_width(None, Vec::new().iter()));
}
#[test]
fn fixed_width() {
assert_eq!(
Some((42, false)),
resolve_asterisk_width(Some(CanAsterisk::Fixed(42)), Vec::new().iter())
);
}
#[test]
fn asterisks_with_numbers() {
assert_eq!(
Some((42, false)),
resolve_asterisk_width(
Some(CanAsterisk::Asterisk),
vec![FormatArgument::SignedInt(42)].iter()
)
);
assert_eq!(
Some((42, false)),
resolve_asterisk_width(
Some(CanAsterisk::Asterisk),
vec![FormatArgument::Unparsed("42".to_string())].iter()
)
);
assert_eq!(
Some((42, true)),
resolve_asterisk_width(
Some(CanAsterisk::Asterisk),
vec![FormatArgument::SignedInt(-42)].iter()
)
);
assert_eq!(
Some((42, true)),
resolve_asterisk_width(
Some(CanAsterisk::Asterisk),
vec![FormatArgument::Unparsed("-42".to_string())].iter()
)
);
}
}
mod resolve_asterisk_precision {
use super::*;
use crate::format::FormatArgument;
#[test]
fn no_width() {
assert_eq!(None, resolve_asterisk_precision(None, Vec::new().iter()));
}
#[test]
fn fixed_width() {
assert_eq!(
Some(42),
resolve_asterisk_precision(Some(CanAsterisk::Fixed(42)), Vec::new().iter())
);
}
#[test]
fn asterisks_with_numbers() {
assert_eq!(
Some(42),
resolve_asterisk_precision(
Some(CanAsterisk::Asterisk),
vec![FormatArgument::SignedInt(42)].iter()
)
);
assert_eq!(
Some(42),
resolve_asterisk_precision(
Some(CanAsterisk::Asterisk),
vec![FormatArgument::Unparsed("42".to_string())].iter()
)
);
assert_eq!(
Some(0),
resolve_asterisk_precision(
Some(CanAsterisk::Asterisk),
vec![FormatArgument::SignedInt(-42)].iter()
)
);
assert_eq!(
Some(0),
resolve_asterisk_precision(
Some(CanAsterisk::Asterisk),
vec![FormatArgument::Unparsed("-42".to_string())].iter()
)
);
}
}
}