gix_error/
test.rs

1use crate::Error;
2
3/// An error for test functions that accepts any error supported by a boxed standard error.
4///
5/// Unlike [`Error`], this type deliberately does not implement [`std::error::Error`]. This allows it to accept arbitrary
6/// errors via [`From`] without conflicting with the standard library's identity conversion.
7/// Its [`Debug`](std::fmt::Debug) output includes the complete diagnostic tree or chain, omitting classification markers
8/// unless only markers are available. Custom I/O wrappers show their kind, with their payloads reported separately.
9/// Captured caller locations are included with the `error-print-location` feature unless alternate formatting is used.
10pub struct TestError(Error);
11
12/// A result type for test functions whose errors are reported through [`TestError`]'s complete diagnostics.
13pub type TestResult<T = ()> = std::result::Result<T, TestError>;
14
15impl<E> From<E> for TestError
16where
17    E: Into<Box<dyn std::error::Error + Send + Sync + 'static>>,
18{
19    #[track_caller]
20    fn from(error: E) -> Self {
21        let error = error.into();
22        TestError(match error.downcast::<Error>() {
23            Ok(error) => *error,
24            Err(error) => Error::from_boxed(error),
25        })
26    }
27}
28
29impl From<TestError> for Error {
30    fn from(error: TestError) -> Self {
31        error.0
32    }
33}
34
35impl std::fmt::Debug for TestError {
36    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
37        #[cfg(any(feature = "tree-error", not(feature = "auto-chain-error")))]
38        return std::fmt::Debug::fmt(self.0.inner.frame(), f);
39
40        #[cfg(all(feature = "auto-chain-error", not(feature = "tree-error")))]
41        {
42            self.0.fmt_chain(f, false)
43        }
44    }
45}
gix_error/test.rs

gix_error/
test.rs
