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|
use iced::ContentFit;
use super::Value;
#[derive(Debug, thiserror::Error, Clone, PartialEq)]
pub enum ParseContentFitError {
#[error("invalid variant")]
InvalidVariant,
}
impl Value for ContentFit {
type Err = ParseContentFitError;
fn from_str(s: &str) -> Result<Self, Self::Err> {
let s = s.trim();
if s.is_empty() {
Ok(Self::default())
} else {
match s {
"fill" => Ok(Self::Fill),
"none" => Ok(Self::None),
"cover" => Ok(Self::Cover),
"contain" => Ok(Self::Contain),
"scale_down" => Ok(Self::ScaleDown),
_ => Err(ParseContentFitError::InvalidVariant),
}
}
}
fn to_string(&self) -> String {
match self {
Self::Fill => String::from("fill"),
Self::None => String::from("none"),
Self::Cover => String::from("cover"),
Self::Contain => String::from("contain"),
Self::ScaleDown => String::from("scale_down"),
}
}
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn can_parse_with_spaces() {
assert_eq!(ContentFit::from_str(" fill"), Ok(ContentFit::Fill));
assert_eq!(ContentFit::from_str(" none "), Ok(ContentFit::None));
assert_eq!(ContentFit::from_str("cover "), Ok(ContentFit::Cover));
assert_eq!(ContentFit::from_str("contain"), Ok(ContentFit::Contain));
assert_eq!(
ContentFit::from_str("scale_down"),
Ok(ContentFit::ScaleDown)
)
}
#[test]
fn cant_parse_invalid_variant() {
assert_eq!(
ContentFit::from_str("clip"),
Err(ParseContentFitError::InvalidVariant)
)
}
}
|
