Method run

cranelift/filetests/src/test_verifier.rs:40–92

(&self, func: Cow<Function>, context: &Context)

    }

    fn run(&self, func: Cow<Function>, context: &Context) -> anyhow::Result<()> {
        let func = func.borrow();

        // Scan source annotations for "error:" directives.
        let mut expected = Vec::new();

        for comment in &context.details.comments {
            if let Some(tail) = match_directive(comment.text, "error:") {
                expected.push((comment.entity, tail));
            }
        }

        match verify_function(func, context.flags_or_isa()) {
            Ok(()) if expected.is_empty() => Ok(()),
            Ok(()) => anyhow::bail!("passed, but expected errors: {expected:?}"),

            Err(ref errors) if expected.is_empty() => {
                anyhow::bail!("expected no error, but got:\n{errors}");
            }

            Err(errors) => {
                let mut errors = errors.0;
                let mut msg = String::new();

                // For each expected error, find a suitable match.
                for expect in expected {
                    let pos = errors
                        .iter()
                        .position(|err| err.location == expect.0 && err.message.contains(expect.1));

                    match pos {
                        None => {
                            writeln!(msg, "  expected error {}: {}", expect.0, expect.1).unwrap();
                        }
                        Some(pos) => {
                            errors.swap_remove(pos);
                        }
                    }
                }

                // Report remaining errors.
                for err in errors {
                    writeln!(msg, "unexpected error {err}").unwrap();
                }

                if msg.is_empty() {
                    Ok(())
                } else {
                    anyhow::bail!("{msg}");
                }
            }
        }
    }
}