La función new toma un path hacia el lugar donde debe existir el archivo de la configuración. Si dicho archivo existe, lo lee y lo regresa; y si no existe, crea la carpeta, el archivo y escribe la configuración por defecto.
QZARZOAV4FPKE6RNEPG2I6RDSO4EIRNFRUYFTMDOL2OHDPOW3GXAC
}
}
}
impl Config {
pub fn new(config_path: &Path) -> anyhow::Result<Self> {
if !config_path.exists() {
std::fs::create_dir_all(config_path)
.context("Failed to create configuration directory")?;
}
let app_config_path = config_path.join("config.ron");
let pretty_config = PrettyConfig::new().struct_names(true);
let config: Config;
if !app_config_path.exists() {
config = Self::default();
match std::fs::write(
app_config_path,
ron::ser::to_string_pretty(&config, pretty_config).unwrap(),
) {
Err(e) => bail!("Failed to write configuration file: {e}"),
_ => (),
};
} else {
config = ron::from_str(&std::fs::read_to_string(app_config_path).unwrap()).unwrap();
Ok(config)
}
}
#[cfg(test)]
mod tests {
use super::*;
use assert_fs::{prelude::*, TempDir};
#[test]
fn create_default_config_works() -> anyhow::Result<()> {
let temp_dir = TempDir::new().context("Failed to create temporary directory")?;
let config = Config::new(&temp_dir.path()).context("Failed to create config")?;
assert!(temp_dir.child("config.ron").exists());
assert_eq!(config, Config::default());
Ok(())
}
#[test]
fn read_existing_config_works() -> anyhow::Result<()> {
let mut config = Config::default();
config.name = "Dalia Rojas".to_string();
config.language = Language::Spanish;
let temp_dir = TempDir::new().context("Failed to create temporary directory")?;
std::fs::write(
temp_dir.child("config.ron"),
ron::ser::to_string_pretty(&config, ron::ser::PrettyConfig::new().struct_names(true))
.context("Failed to serialize config struct")?,
)
.context("Failed to write to temporary file")?;
assert!(temp_dir.child("config.ron").exists());
let file_contents: Config = ron::from_str(
&std::fs::read_to_string(temp_dir.child("config.ron"))
.context("Failed to read to string")?,
)
.context("Failed to serialize into struct type")?;
assert_eq!(file_contents, config);
Ok(())
[dev-dependencies]
assert_fs = "1.0.13"
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"globwalk",
"predicates",
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]
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