agentnative 0.1.3

The agent-native CLI linter — check whether your CLI follows agent-readiness principles
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use crate::check::Check;
use crate::project::Project;
use crate::runner::RunStatus;
use crate::types::{CheckGroup, CheckLayer, CheckResult, CheckStatus, Confidence};

pub struct SigpipeCheck;

impl Check for SigpipeCheck {
    fn id(&self) -> &str {
        "p6-sigpipe"
    }

    fn label(&self) -> &'static str {
        "Handles SIGPIPE gracefully"
    }

    fn group(&self) -> CheckGroup {
        CheckGroup::P6
    }

    fn layer(&self) -> CheckLayer {
        CheckLayer::Behavioral
    }

    fn covers(&self) -> &'static [&'static str] {
        &["p6-must-sigpipe"]
    }

    fn applicable(&self, project: &Project) -> bool {
        project.runner.is_some()
    }

    fn run(&self, project: &Project) -> anyhow::Result<CheckResult> {
        let runner = project.runner_ref();
        let result = runner.run_partial(&["--help"], 16);

        let status = match result.status {
            RunStatus::Ok => CheckStatus::Pass,
            RunStatus::Crash { signal } => {
                CheckStatus::Fail(format!("crashed on SIGPIPE (signal {signal})"))
            }
            _ => CheckStatus::Warn(format!("unexpected status: {:?}", result.status)),
        };

        Ok(CheckResult {
            id: self.id().to_string(),
            label: self.label().into(),
            group: CheckGroup::P6,
            layer: CheckLayer::Behavioral,
            status,
            confidence: Confidence::High,
        })
    }
}

#[cfg(test)]
mod tests {
    use super::*;
    use crate::checks::behavioral::tests::test_project_with_runner;
    use crate::types::CheckStatus;

    #[test]
    fn sigpipe_pass_with_echo() {
        let project = test_project_with_runner("/bin/echo");
        let result = SigpipeCheck.run(&project).expect("check should run");
        assert!(matches!(result.status, CheckStatus::Pass));
    }

    #[test]
    fn sigpipe_handles_crash() {
        let project = crate::checks::behavioral::tests::test_project_with_sh_script("kill -11 $$");
        let result = SigpipeCheck
            .run(&project)
            .expect("check should not panic on crash");
        // run_partial always returns Ok status (kills child after partial read),
        // so a crash script may still yield Pass or a non-panic result
        assert!(matches!(
            result.status,
            CheckStatus::Pass | CheckStatus::Fail(_) | CheckStatus::Warn(_)
        ));
    }
}