use thiserror::Error;
#[derive(Debug, Error)]
pub enum PackError {
#[error("E_INVALID_FORMAT: format '{0}' not supported (only 'gtpack-legacy' in Phase A)")]
InvalidFormat(String),
#[error("E_INVALID_CONFIG: {0}")]
InvalidConfig(String),
#[error("E_ZIP: {0}")]
Zip(String),
#[error("E_SERDE: {0}")]
Serde(String),
#[error("E_MANIFEST_CBOR: {0}")]
ManifestCbor(String),
}
impl PackError {
pub fn code(&self) -> &'static str {
match self {
PackError::InvalidFormat(_) => "E_INVALID_FORMAT",
PackError::InvalidConfig(_) => "E_INVALID_CONFIG",
PackError::Zip(_) => "E_ZIP",
PackError::Serde(_) => "E_SERDE",
PackError::ManifestCbor(_) => "E_MANIFEST_CBOR",
}
}
}
impl From<serde_json::Error> for PackError {
fn from(e: serde_json::Error) -> Self {
PackError::Serde(e.to_string())
}
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn codes_stable() {
assert_eq!(
PackError::InvalidFormat("x".into()).code(),
"E_INVALID_FORMAT"
);
assert_eq!(
PackError::InvalidConfig("bad".into()).code(),
"E_INVALID_CONFIG"
);
assert_eq!(PackError::Zip("zip oops".into()).code(), "E_ZIP");
assert_eq!(PackError::Serde("decode".into()).code(), "E_SERDE");
}
#[test]
fn display_includes_code_prefix() {
assert_eq!(
PackError::InvalidFormat("custom".into()).to_string(),
"E_INVALID_FORMAT: format 'custom' not supported (only 'gtpack-legacy' in Phase A)"
);
assert_eq!(
PackError::InvalidConfig("missing".into()).to_string(),
"E_INVALID_CONFIG: missing"
);
assert_eq!(PackError::Zip("entry".into()).to_string(), "E_ZIP: entry");
assert_eq!(
PackError::Serde("decode".into()).to_string(),
"E_SERDE: decode"
);
}
#[test]
fn from_serde_json_error() {
let bad: Result<serde_json::Value, _> = serde_json::from_str("{not json");
let err: PackError = bad.unwrap_err().into();
assert_eq!(err.code(), "E_SERDE");
assert!(matches!(err, PackError::Serde(_)));
}
}