52 lines
1.1 KiB
Rust
52 lines
1.1 KiB
Rust
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use std::{error::Error, fmt};
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#[derive(Debug)]
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enum ErrorType {
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TableAddFieldDuplicate(String),
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}
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impl fmt::Display for ErrorType {
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fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
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match self {
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ErrorType::TableAddFieldDuplicate(data) => write!(f, "field '{}' already exists", data),
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}
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}
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}
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#[derive(Debug)]
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struct MTTError {
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err: ErrorType,
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}
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impl MTTError {
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fn new(err: ErrorType) -> Self {
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Self {
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err: err,
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}
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}
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}
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impl Error for MTTError {}
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impl fmt::Display for MTTError {
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fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
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write!(f, "{}", self.err.to_string())
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}
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}
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#[cfg(test)]
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mod errors {
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use super::*;
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#[test]
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fn get_error() {
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let err = MTTError::new(ErrorType::TableAddFieldDuplicate("tester".to_string()));
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assert_eq!(err.to_string(), "field 'tester' already exists");
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assert!(err.source().is_none());
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let err = MTTError::new(ErrorType::TableAddFieldDuplicate("other".to_string()));
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assert_eq!(err.to_string(), "field 'other' already exists");
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assert!(err.source().is_none());
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}
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}
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