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report.rs
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report.rs
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use snafu::{prelude::*, IntoError, Report};
macro_rules! assert_contains {
(needle: $needle:expr, haystack: $haystack:expr) => {
assert!(
$haystack.contains($needle),
"Expected {:?} to include {:?}",
$haystack,
$needle,
)
};
}
#[test]
fn includes_the_error_display_text() {
#[derive(Debug, Snafu)]
#[snafu(display("This is my Display text!"))]
struct Error;
let r = Report::from_error(Error);
let msg = r.to_string();
let expected = "This is my Display text!";
assert_contains!(needle: expected, haystack: msg);
}
#[test]
fn includes_the_source_display_text() {
#[derive(Debug, Snafu)]
#[snafu(display("This is my inner Display"))]
struct InnerError;
#[derive(Debug, Snafu)]
#[snafu(display("This is my outer Display"))]
struct OuterError {
source: InnerError,
}
let e = OuterSnafu.into_error(InnerError);
let r = Report::from_error(e);
let msg = r.to_string();
let expected = "This is my inner Display";
assert_contains!(needle: expected, haystack: msg);
}
#[test]
fn debug_and_display_are_the_same() {
#[derive(Debug, Snafu)]
#[snafu(display("This is my inner Display"))]
struct InnerError;
#[derive(Debug, Snafu)]
#[snafu(display("This is my outer Display"))]
struct OuterError {
source: InnerError,
}
let e = OuterSnafu.into_error(InnerError);
let r = Report::from_error(e);
let display = format!("{}", r);
let debug = format!("{:?}", r);
assert_eq!(display, debug);
}
#[test]
fn procedural_macro_works_with_result_return_type() {
#[derive(Debug, Snafu)]
struct Error;
#[snafu::report]
fn mainlike_result() -> Result<(), Error> {
Ok(())
}
let _: Result<(), Report<Error>> = mainlike_result();
}
#[derive(Debug, Snafu)]
struct TestFunctionError;
#[test]
#[snafu::report]
fn procedural_macro_works_with_test_functions() -> Result<(), TestFunctionError> {
Ok(())
}