mirror of https://github.com/zkat/miette.git
75 lines
2.0 KiB
Rust
75 lines
2.0 KiB
Rust
use std::{fmt, sync::Arc};
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use miette::{
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Diagnostic, DiagnosticReporter, DiagnosticSnippet, MietteError, MietteReporter,
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SourceSpan,
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};
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use thiserror::Error;
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#[derive(Error)]
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#[error("oops!")]
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struct MyBad {
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snippets: Vec<DiagnosticSnippet>,
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}
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impl fmt::Debug for MyBad {
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fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
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MietteReporter.debug(self, f)
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}
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}
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impl Diagnostic for MyBad {
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fn code(&self) -> &(dyn std::fmt::Display) {
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&"oops::my::bad"
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}
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fn help(&self) -> Option<&(dyn std::fmt::Display)> {
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Some(&"try doing it better next time?")
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}
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fn snippets(&self) -> Option<Box<dyn Iterator<Item = DiagnosticSnippet>>> {
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Some(Box::new(self.snippets.clone().into_iter()))
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}
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}
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#[test]
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fn basic() -> Result<(), MietteError> {
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let err = MyBad {
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snippets: Vec::new(),
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};
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let out = format!("{:?}", err);
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assert_eq!(
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"Error[oops::my::bad]: oops!\n﹦try doing it better next time?\n".to_string(),
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out
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);
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Ok(())
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}
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#[test]
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fn fancy() -> Result<(), MietteError> {
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let src = "source\n text\n here".to_string();
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let len = src.len();
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let err = MyBad {
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snippets: vec![DiagnosticSnippet {
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message: Some("This is the part that broke".into()),
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source_name: "bad_file.rs".into(),
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source: Arc::new(src),
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highlights: Some(vec![(
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"this bit here".into(),
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SourceSpan {
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start: 9.into(),
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end: 12.into(),
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},
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)]),
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context: SourceSpan {
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start: 0.into(),
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end: (len - 1).into(),
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},
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}],
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};
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let out = format!("{:?}", err);
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// println!("{}", out);
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assert_eq!("Error[oops::my::bad]: oops!\n\n[bad_file.rs] This is the part that broke:\n\n 1 | source\n 2 | text\n ⫶ | ^^^^ this bit here\n 3 | here\n﹦try doing it better next time?\n".to_string(), out);
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Ok(())
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}
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