rskit_testutil/
assertions.rs

1use rskit_errors::{AppResult, ErrorCode};
2
3/// Unwrap an `AppResult`, panicking with a clear message on `Err`.
4///
5/// Returns the inner value on success.
6#[track_caller]
7pub fn assert_ok<T>(result: AppResult<T>) -> T {
8    match result {
9        Ok(v) => v,
10        Err(e) => panic!("expected Ok, got Err: {e}"),
11    }
12}
13
14/// Assert that the result is an error with the expected [`ErrorCode`].
15#[track_caller]
16pub fn assert_err_code(result: AppResult<impl std::fmt::Debug>, code: ErrorCode) {
17    match result {
18        Ok(v) => panic!("expected Err({code:?}), got Ok({v:?})"),
19        Err(e) => {
20            assert_eq!(
21                e.code(),
22                code,
23                "expected error code {code:?}, got {:?}: {e}",
24                e.code(),
25            );
26        }
27    }
28}
29
30#[cfg(test)]
31mod tests {
32    use super::*;
33    use rskit_errors::AppError;
34
35    #[test]
36    fn assert_ok_passes() {
37        let val: AppResult<i32> = Ok(42);
38        assert_eq!(assert_ok(val), 42);
39    }
40
41    #[test]
42    #[should_panic(expected = "expected Ok")]
43    fn assert_ok_panics_on_err() {
44        let val: AppResult<i32> = Err(AppError::new(ErrorCode::Internal, "boom"));
45        assert_ok(val);
46    }
47
48    #[test]
49    fn assert_err_code_passes() {
50        let val: AppResult<i32> = Err(AppError::not_found("gone", None));
51        assert_err_code(val, ErrorCode::NotFound);
52    }
53
54    #[test]
55    #[should_panic(expected = "expected Err")]
56    fn assert_err_code_panics_on_ok() {
57        let val: AppResult<i32> = Ok(42);
58        assert_err_code(val, ErrorCode::Internal);
59    }
60
61    #[test]
62    #[should_panic(expected = "expected error code")]
63    fn assert_err_code_panics_on_wrong_code() {
64        let val: AppResult<i32> = Err(AppError::not_found("nope", None));
65        assert_err_code(val, ErrorCode::Internal);
66    }
67}
rskit_testutil/assertions.rs

rskit_testutil/
assertions.rs
