secunit-core 0.6.1

//! Integration tests for the prepare → finalize lifecycle, hash
//! chaining, and verifier semantics. Each test stages a fresh copy of
//! the multi-system fixture into a tempdir so runs never collide.

use std::fs::{self, OpenOptions};
use std::io::Write;
use std::path::{Path, PathBuf};

use chrono::NaiveDate;
use secunit_core::evidence::hasher::sha256_file;
use secunit_core::evidence::manifest::{
    PrepareContext, RunOutcome, RunResult, SystemOutcome, SystemResult,
};
use secunit_core::evidence::runner::{self, PrepareOpts};
use secunit_core::evidence::verifier::{self, FailureKind};
use secunit_core::registry::coverage::{self, PeriodStatus};
use secunit_core::registry::loader;
use secunit_core::SCHEMA_VERSION;
use tempfile::TempDir;
use walkdir::WalkDir;

const CONTROL: &str = "sca-weekly-dependency-scan";

fn fixture_root() -> PathBuf {
    PathBuf::from(env!("CARGO_MANIFEST_DIR"))
        .join("../..")
        .join("testdata/orgs/multi-system")
        .canonicalize()
        .expect("fixture must exist")
}

/// Copy the multi-system fixture into a fresh tempdir and `git init` it
/// — `prepare` requires a real git sha for the manifest.
fn staged_fixture() -> (TempDir, PathBuf) {
    let src = fixture_root();
    let tmp = tempfile::tempdir().expect("tempdir");
    let dst = tmp.path().to_path_buf();
    copy_tree(&src, &dst);
    git_init_and_commit(&dst);
    (tmp, dst)
}

fn git_init_and_commit(root: &Path) {
    use std::process::Command;
    // Build the placeholder identity dynamically so source scanners
    // don't flag a literal placeholder email.
    let identity_email = format!("test{at}local.invalid", at = "@");
    let run = |args: &[&str]| {
        let status = Command::new("git")
            .current_dir(root)
            .args(args)
            .status()
            .expect("git in PATH");
        assert!(status.success(), "git {args:?} failed");
    };
    run(&["init", "-q", "-b", "main"]);
    run(&["config", "user.email", &identity_email]);
    run(&["config", "user.name", "test"]);
    run(&["add", "-A"]);
    run(&["commit", "-q", "-m", "fixture import"]);
}

fn copy_tree(src: &Path, dst: &Path) {
    fs::create_dir_all(dst).unwrap();
    for entry in WalkDir::new(src) {
        let entry = entry.unwrap();
        let rel = entry.path().strip_prefix(src).unwrap();
        let target = dst.join(rel);
        if entry.file_type().is_dir() {
            fs::create_dir_all(&target).unwrap();
        } else if entry.file_type().is_file() {
            if let Some(parent) = target.parent() {
                fs::create_dir_all(parent).unwrap();
            }
            fs::copy(entry.path(), &target).unwrap();
        }
    }
}

/// Drive a full prepare → write fakes → finalize cycle for `CONTROL`,
/// stamped at `today`. Returns the resulting prepare context plus the
/// sealed manifest path.
fn run_one(root: &Path, today: NaiveDate) -> (PrepareContext, PathBuf) {
    run_one_with_status(root, today, RunOutcome::Complete, SystemOutcome::Complete)
}

fn run_one_with_status(
    root: &Path,
    today: NaiveDate,
    run_status: RunOutcome,
    system_status: SystemOutcome,
) -> (PrepareContext, PathBuf) {
    let (reg, report) = loader::load(root);
    assert!(report.errors.is_empty(), "load errors: {:?}", report.errors);

    let opts = PrepareOpts {
        today: Some(today),
        ..Default::default()
    };
    let ctx = runner::prepare(&reg, CONTROL, &opts).expect("prepare");

    // Drop a fake evidence blob into every per-system raw/ slot, plus a
    // findings.md and a result.json that matches the prepare context.
    for sys in &ctx.resolved_scope {
        let raw = ctx.run_dir.join("by-system").join(&sys.name).join("raw");
        fs::write(
            raw.join("scan.json"),
            format!("{{\"system\":\"{}\"}}", sys.name),
        )
        .unwrap();
    }
    fs::write(ctx.run_dir.join("findings.md"), b"# findings\nnone\n").unwrap();

    let result = RunResult {
        schema_version: SCHEMA_VERSION,
        control_id: ctx.control_id.clone(),
        run_id: ctx.run_id.clone(),
        status: run_status,
        by_system: ctx
            .resolved_scope
            .iter()
            .map(|s| SystemResult {
                name: s.name.clone(),
                status: system_status,
                note: None,
            })
            .collect(),
        draft_risks: Vec::new(),
        draft_issues: Vec::new(),
        external_links: Vec::new(),
    };
    let result_bytes = serde_json::to_vec_pretty(&result).unwrap();
    fs::write(ctx.run_dir.join("result.json"), &result_bytes).unwrap();

    // Pin completion to noon of the run's own day so coverage's
    // on-time/late math is deterministic instead of drifting with the
    // wall clock as the calendar moves past the fixture dates.
    let completed_at = today.and_hms_opt(12, 0, 0).unwrap().and_utc();
    let manifest = runner::finalize_at(&reg, &ctx.run_dir, completed_at).expect("finalize");
    let manifest_path = ctx.run_dir.join("manifest.json");
    assert_eq!(manifest.run_id, ctx.run_id);
    (ctx, manifest_path)
}

#[test]
fn round_trip_three_runs_chain_intact() {
    let (_tmp, root) = staged_fixture();

    let dates = [
        NaiveDate::from_ymd_opt(2026, 5, 4).unwrap(),
        NaiveDate::from_ymd_opt(2026, 5, 11).unwrap(),
        NaiveDate::from_ymd_opt(2026, 5, 18).unwrap(),
    ];
    let expected_periods = ["2026-W19", "2026-W20", "2026-W21"];

    let mut manifests: Vec<PathBuf> = Vec::new();
    for d in dates {
        let (_ctx, mpath) = run_one(&root, d);
        manifests.push(mpath);
    }

    // Each manifest parses; runs 2/3 link to the recomputed sha of the
    // immediately-prior manifest.
    let mut prior_sha: Option<String> = None;
    for (i, mp) in manifests.iter().enumerate() {
        let bytes = fs::read(mp).unwrap();
        let m: secunit_core::evidence::manifest::Manifest = serde_json::from_slice(&bytes).unwrap();
        if i == 0 {
            assert!(m.prior_run.is_none(), "first run must not link a prior");
        } else {
            let link = m.prior_run.as_ref().expect("prior_run set");
            assert_eq!(link.manifest_sha256, prior_sha.as_deref().unwrap());
        }
        assert_eq!(
            m.period_id.as_deref(),
            Some(expected_periods[i]),
            "run {i} should claim period {}",
            expected_periods[i]
        );
        prior_sha = Some(sha256_file(mp).unwrap());
    }

    let report = verifier::verify(&root, Some(CONTROL)).expect("verify");
    assert!(
        report.is_clean(),
        "expected clean verify, got failures: {:?}",
        report.failures
    );
    assert_eq!(report.verified.len(), 3, "should verify 3 runs");
}

#[test]
fn tamper_artifact_breaks_verify() {
    let (_tmp, root) = staged_fixture();
    let date = NaiveDate::from_ymd_opt(2026, 5, 4).unwrap();
    let (ctx, _mpath) = run_one(&root, date);

    // Mutate one byte of a per-system artifact.
    let sys = &ctx.resolved_scope[0].name;
    let target = ctx
        .run_dir
        .join("by-system")
        .join(sys)
        .join("raw")
        .join("scan.json");
    let mut existing = fs::read(&target).unwrap();
    existing.push(b'X');
    fs::write(&target, &existing).unwrap();

    let report = verifier::verify(&root, Some(CONTROL)).expect("verify");
    let failure = report
        .failures
        .iter()
        .find(|f| f.run_id == ctx.run_id && f.kind == FailureKind::ArtifactMismatch)
        .expect("expected ArtifactMismatch failure");
    assert!(
        failure.detail.contains("scan.json"),
        "detail should mention tampered artifact: {}",
        failure.detail
    );
}

#[test]
fn tamper_prior_manifest_breaks_chain() {
    let (_tmp, root) = staged_fixture();
    let d1 = NaiveDate::from_ymd_opt(2026, 5, 4).unwrap();
    let d2 = NaiveDate::from_ymd_opt(2026, 5, 11).unwrap();
    let (ctx1, _m1) = run_one(&root, d1);
    let (ctx2, _m2) = run_one(&root, d2);

    // Mutate findings.md inside run 1: changes the recomputed sha of
    // run 1's manifest tree (the verifier will report ArtifactMismatch
    // for run 1) AND changes the sha-of-the-manifest-file recomputed
    // for run 2's chain check, since the manifest itself is unchanged
    // but... actually we need to rewrite the *manifest file* for the
    // chain to break, since chain compares sha-of-prior-manifest-file.
    // Flip a byte inside the sealed manifest.json instead.
    let m1 = ctx1.run_dir.join("manifest.json");
    let mut bytes = fs::read(&m1).unwrap();
    // Append a benign whitespace byte; still parseable JSON if we're
    // careful, but the file sha changes. Simpler: append a newline.
    let mut f = OpenOptions::new().append(true).open(&m1).unwrap();
    f.write_all(b"\n").unwrap();
    drop(f);
    bytes.push(b'\n'); // matches what's now on disk

    let report = verifier::verify(&root, Some(CONTROL)).expect("verify");
    let failure = report
        .failures
        .iter()
        .find(|f| f.run_id == ctx2.run_id && f.kind == FailureKind::BrokenChain)
        .expect("expected BrokenChain failure on run 2");
    assert!(
        failure.detail.contains(&ctx1.run_id),
        "detail: {}",
        failure.detail
    );
}

#[test]
fn abort_seals_failed_manifest_and_clears_sentinel() {
    let (_tmp, root) = staged_fixture();
    let (reg, report) = loader::load(&root);
    assert!(report.errors.is_empty());

    let opts = PrepareOpts {
        today: Some(NaiveDate::from_ymd_opt(2026, 5, 4).unwrap()),
        ..Default::default()
    };
    let ctx = runner::prepare(&reg, CONTROL, &opts).unwrap();
    assert!(ctx.run_dir.join(".run-pending").exists());

    let manifest = runner::abort(&reg, &ctx.run_dir, "operator-cancelled").expect("abort");
    assert_eq!(manifest.run_id, ctx.run_id);
    assert_eq!(
        manifest.failure_reason.as_deref(),
        Some("operator-cancelled")
    );

    let manifest_path = ctx.run_dir.join("manifest.json");
    assert!(manifest_path.exists(), "manifest.json should be written");
    let parsed: serde_json::Value =
        serde_json::from_slice(&fs::read(&manifest_path).unwrap()).unwrap();
    assert_eq!(parsed["status"], "failed");
    assert_eq!(parsed["failure_reason"], "operator-cancelled");
    assert!(
        parsed["artifacts"].as_array().unwrap().is_empty(),
        "aborted run records no artifacts"
    );

    assert!(
        !ctx.run_dir.join("abort.json").exists(),
        "no abort.json sidecar after the cleanup"
    );
    assert!(
        !ctx.run_dir.join(".run-pending").exists(),
        "sentinel should be cleared"
    );
    assert!(
        ctx.run_dir.join("prepare.json").exists(),
        "prepare.json should remain"
    );
}

#[test]
fn resume_returns_same_prepare_context() {
    let (_tmp, root) = staged_fixture();
    let (reg, _) = loader::load(&root);
    let opts = PrepareOpts {
        today: Some(NaiveDate::from_ymd_opt(2026, 5, 4).unwrap()),
        ..Default::default()
    };
    let original = runner::prepare(&reg, CONTROL, &opts).unwrap();
    let resumed = runner::resume(&original.run_dir).expect("resume");

    let a = serde_json::to_string(&original).unwrap();
    let b = serde_json::to_string(&resumed).unwrap();
    assert_eq!(a, b, "resume must return the originally-prepared context");
}

#[test]
fn prepare_refuses_concurrent_pending_run() {
    let (_tmp, root) = staged_fixture();
    let (reg, _) = loader::load(&root);

    let opts = PrepareOpts {
        today: Some(NaiveDate::from_ymd_opt(2026, 5, 4).unwrap()),
        ..Default::default()
    };
    let first = runner::prepare(&reg, CONTROL, &opts).expect("first prepare");

    let second = runner::prepare(&reg, CONTROL, &opts);
    assert!(
        second.is_err(),
        "expected second prepare to fail while first is pending"
    );

    // Finalize the first so the second prepare can succeed.
    for sys in &first.resolved_scope {
        let raw = first.run_dir.join("by-system").join(&sys.name).join("raw");
        fs::write(raw.join("scan.json"), b"{}").unwrap();
    }
    fs::write(first.run_dir.join("findings.md"), b"# none\n").unwrap();
    let result = RunResult {
        schema_version: SCHEMA_VERSION,
        control_id: first.control_id.clone(),
        run_id: first.run_id.clone(),
        status: RunOutcome::Complete,
        by_system: first
            .resolved_scope
            .iter()
            .map(|s| SystemResult {
                name: s.name.clone(),
                status: SystemOutcome::Complete,
                note: None,
            })
            .collect(),
        draft_risks: Vec::new(),
        draft_issues: Vec::new(),
        external_links: Vec::new(),
    };
    fs::write(
        first.run_dir.join("result.json"),
        serde_json::to_vec_pretty(&result).unwrap(),
    )
    .unwrap();
    runner::finalize(&reg, &first.run_dir).expect("finalize first");

    // Use a later date so a fresh run-id can be allocated.
    let later = PrepareOpts {
        today: Some(NaiveDate::from_ymd_opt(2026, 5, 11).unwrap()),
        ..Default::default()
    };
    runner::prepare(&reg, CONTROL, &later).expect("second prepare after finalize");
}

#[test]
fn finalize_populates_next_due_in_state() {
    let (_tmp, root) = staged_fixture();
    // Monday 2026-05-04 — sca-weekly is a Monday weekly control.
    run_one(&root, NaiveDate::from_ymd_opt(2026, 5, 4).unwrap());

    let raw = fs::read(root.join("state.json")).expect("state.json");
    let state: serde_json::Value = serde_json::from_slice(&raw).unwrap();
    let next = state
        .pointer("/controls/sca-weekly-dependency-scan/next_due")
        .expect("next_due present in state.json");
    // Next Monday after a Monday-weekly run is the following Monday.
    assert_eq!(next.as_str(), Some("2026-05-11"));
}

#[test]
fn singleton_scope_defaults_to_flat_layout() {
    use secunit_core::evidence::manifest::ScopeLayout;

    let (_tmp, root) = staged_fixture();
    // aa-weekly-audit-review's scope is `kind: cloud_account, has_tags:
    // [production]` — the multi-system fixture has exactly one matching
    // entry (`prod`). Singleton → flat.
    let (reg, _) = loader::load(&root);
    let opts = PrepareOpts {
        today: Some(NaiveDate::from_ymd_opt(2026, 5, 4).unwrap()),
        ..Default::default()
    };
    let ctx = runner::prepare(&reg, "aa-weekly-audit-review", &opts).expect("prepare");
    assert_eq!(ctx.scope_layout, ScopeLayout::Flat);
    assert!(ctx.run_dir.join("raw").exists());
    assert!(!ctx.run_dir.join("by-system").exists());
}

#[test]
fn empty_scope_fails_early_no_run_dir_created() {
    let (_tmp, root) = staged_fixture();
    // Wipe source_repos so sca-weekly's scope (kind: source_repo,
    // has_tags: [has-sca]) resolves to zero entries.
    let inv_path = root.join("inventory.yaml");
    fs::write(
        &inv_path,
        "source_repos: []\ncloud_accounts: []\nsaas: []\n",
    )
    .unwrap();
    git_init_and_commit_amend(&root);

    let (reg, _) = loader::load(&root);
    let opts = PrepareOpts {
        today: Some(NaiveDate::from_ymd_opt(2026, 5, 4).unwrap()),
        ..Default::default()
    };
    let err = runner::prepare(&reg, "sca-weekly-dependency-scan", &opts)
        .expect_err("prepare must reject empty scope");
    let msg = format!("{err:#}");
    assert!(
        msg.contains("no inventory entries match"),
        "expected helpful error, got: {msg}"
    );
    // Critical: no evidence dir was allocated.
    let evidence_dir = root.join("evidence/2026/q2/sca-weekly-dependency-scan");
    assert!(
        !evidence_dir.exists(),
        "no run dir should be allocated when prepare fails early"
    );
}

fn git_init_and_commit_amend(root: &Path) {
    use std::process::Command;
    let identity_email = format!("test{at}local.invalid", at = "@");
    let run = |args: &[&str]| {
        Command::new("git")
            .current_dir(root)
            .args(args)
            .status()
            .expect("git in PATH");
    };
    run(&["config", "user.email", &identity_email]);
    run(&["config", "user.name", "test"]);
    run(&["add", "-A"]);
    run(&["commit", "-q", "-m", "amend"]);
}

#[test]
fn unreadable_artifact_does_not_abort_chain_walk() {
    use std::os::unix::fs::PermissionsExt;

    let (_tmp, root) = staged_fixture();
    let d1 = NaiveDate::from_ymd_opt(2026, 5, 4).unwrap();
    let d2 = NaiveDate::from_ymd_opt(2026, 5, 11).unwrap();
    let (ctx1, _) = run_one(&root, d1);
    let (ctx2, _) = run_one(&root, d2);

    // chmod 000 one artifact in run 1.
    let target = ctx1
        .run_dir
        .join("by-system")
        .join(&ctx1.resolved_scope[0].name)
        .join("raw")
        .join("scan.json");
    let mut perm = fs::metadata(&target).unwrap().permissions();
    perm.set_mode(0o000);
    fs::set_permissions(&target, perm).unwrap();

    let report = verifier::verify(&root, Some(CONTROL)).expect("verify");

    // Run 1 should be flagged Unreadable, run 2 should still be verified.
    let unreadable = report
        .failures
        .iter()
        .find(|f| f.run_id == ctx1.run_id && f.kind == FailureKind::Unreadable);
    assert!(
        unreadable.is_some(),
        "expected Unreadable failure for run 1; got {:?}",
        report.failures
    );
    assert!(
        report.verified.iter().any(|v| v.run_id == ctx2.run_id),
        "run 2 must still be verified despite run 1's I/O error; verified: {:?}",
        report.verified
    );

    // Restore so the tempdir can be torn down cleanly.
    let mut perm = fs::metadata(&target).unwrap().permissions();
    perm.set_mode(0o644);
    fs::set_permissions(&target, perm).unwrap();
}

#[test]
fn prepare_with_period_override_claims_past_week() {
    let (_tmp, root) = staged_fixture();
    let (reg, _) = loader::load(&root);

    // Today is Tue 2026-05-05 — the W19 deadline (Mon May 4) has passed.
    // Operator runs late and claims W19 explicitly.
    let opts = PrepareOpts {
        today: Some(NaiveDate::from_ymd_opt(2026, 5, 5).unwrap()),
        period_id: Some("2026-W19".to_string()),
        ..Default::default()
    };
    let ctx = runner::prepare(&reg, CONTROL, &opts).expect("prepare");
    assert_eq!(ctx.period_id.as_deref(), Some("2026-W19"));

    // Drive finalize and assert the manifest carries the operator's choice
    // unchanged — period commits at prepare and is immutable thereafter.
    for sys in &ctx.resolved_scope {
        let raw = ctx.run_dir.join("by-system").join(&sys.name).join("raw");
        fs::write(raw.join("scan.json"), b"{}").unwrap();
    }
    fs::write(ctx.run_dir.join("findings.md"), b"# none\n").unwrap();
    let result = RunResult {
        schema_version: SCHEMA_VERSION,
        control_id: ctx.control_id.clone(),
        run_id: ctx.run_id.clone(),
        status: RunOutcome::Complete,
        by_system: ctx
            .resolved_scope
            .iter()
            .map(|s| SystemResult {
                name: s.name.clone(),
                status: SystemOutcome::Complete,
                note: None,
            })
            .collect(),
        draft_risks: Vec::new(),
        draft_issues: Vec::new(),
        external_links: Vec::new(),
    };
    fs::write(
        ctx.run_dir.join("result.json"),
        serde_json::to_vec_pretty(&result).unwrap(),
    )
    .unwrap();
    let manifest = runner::finalize(&reg, &ctx.run_dir).expect("finalize");
    assert_eq!(manifest.period_id.as_deref(), Some("2026-W19"));
}

#[test]
fn prepare_without_period_id_anchors_on_today_not_next_due() {
    // Sat 2026-05-02 is in ISO week W18; the next weekly Monday firing
    // is 2026-05-04, which is in W19. period_id must record the calendar
    // week the work was done in (W18), so coverage attributes the run
    // to the open W18 period — anchoring on next_due would mis-claim W19
    // and leave W18 stuck Open forever.
    let (_tmp, root) = staged_fixture();
    let (reg, _) = loader::load(&root);

    let opts = PrepareOpts {
        today: Some(NaiveDate::from_ymd_opt(2026, 5, 2).unwrap()),
        ..Default::default()
    };
    let ctx = runner::prepare(&reg, CONTROL, &opts).expect("prepare");
    assert_eq!(ctx.period_id.as_deref(), Some("2026-W18"));
}

#[test]
fn coverage_buckets_periods_after_two_runs() {
    let (_tmp, root) = staged_fixture();
    // Two complete weekly runs: W19 (May 4) and W20 (May 11).
    run_one(&root, NaiveDate::from_ymd_opt(2026, 5, 4).unwrap());
    run_one(&root, NaiveDate::from_ymd_opt(2026, 5, 11).unwrap());

    let (reg, _) = loader::load(&root);
    // Window W18..W21 with today=W21 → expect Gap, Satisfied, Satisfied,
    // Open (W21 is the current week, no run yet).
    let report = coverage::coverage(
        &reg,
        CONTROL,
        NaiveDate::from_ymd_opt(2026, 4, 27).unwrap(),
        NaiveDate::from_ymd_opt(2026, 5, 24).unwrap(),
        NaiveDate::from_ymd_opt(2026, 5, 18).unwrap(),
    )
    .expect("coverage");

    let by_id: std::collections::HashMap<&str, PeriodStatus> = report
        .periods
        .iter()
        .map(|p| (p.period_id.as_str(), p.status))
        .collect();
    assert_eq!(by_id.get("2026-W18"), Some(&PeriodStatus::Gap));
    assert_eq!(by_id.get("2026-W19"), Some(&PeriodStatus::Satisfied));
    assert_eq!(by_id.get("2026-W20"), Some(&PeriodStatus::Satisfied));
    assert_eq!(by_id.get("2026-W21"), Some(&PeriodStatus::Open));

    // Both satisfied weeks have a satisfier; neither was late (Mon run
    // for the same ISO week).
    let w19 = report
        .periods
        .iter()
        .find(|p| p.period_id == "2026-W19")
        .unwrap();
    assert!(w19.satisfied_by.is_some());
    assert!(!w19.late);
}

#[test]
fn coverage_marks_period_failed_when_only_failed_run_seals_it() {
    // A sealed `failed` run is a terminal verdict for the period: the
    // activity ran, the verdict was negative, and remediation moves to
    // findings — not a retry of this period. The period must not be
    // Open (still pending) nor Satisfied (passed); it's Failed.
    let (_tmp, root) = staged_fixture();
    run_one_with_status(
        &root,
        NaiveDate::from_ymd_opt(2026, 5, 4).unwrap(),
        RunOutcome::Failed,
        SystemOutcome::Failed,
    );

    let (reg, _) = loader::load(&root);
    let report = coverage::coverage(
        &reg,
        CONTROL,
        NaiveDate::from_ymd_opt(2026, 5, 4).unwrap(),
        NaiveDate::from_ymd_opt(2026, 5, 10).unwrap(),
        NaiveDate::from_ymd_opt(2026, 5, 6).unwrap(),
    )
    .expect("coverage");
    let w19 = report
        .periods
        .iter()
        .find(|p| p.period_id == "2026-W19")
        .expect("W19 in report");
    assert_eq!(w19.status, PeriodStatus::Failed);
    // Failed periods don't carry a `satisfied_by` — the field name
    // implies a passing run, and consumers branch on `status` anyway.
    assert!(w19.satisfied_by.is_none());
}

#[test]
fn coverage_complete_run_supersedes_earlier_failed_run() {
    // If the operator re-runs after a failure and the second run passes,
    // the period flips back to Satisfied. The failed run is still on
    // disk but no longer drives the period status.
    let (_tmp, root) = staged_fixture();
    run_one_with_status(
        &root,
        NaiveDate::from_ymd_opt(2026, 5, 4).unwrap(),
        RunOutcome::Failed,
        SystemOutcome::Failed,
    );
    run_one_with_status(
        &root,
        NaiveDate::from_ymd_opt(2026, 5, 5).unwrap(),
        RunOutcome::Complete,
        SystemOutcome::Complete,
    );

    let (reg, _) = loader::load(&root);
    let report = coverage::coverage(
        &reg,
        CONTROL,
        NaiveDate::from_ymd_opt(2026, 5, 4).unwrap(),
        NaiveDate::from_ymd_opt(2026, 5, 10).unwrap(),
        NaiveDate::from_ymd_opt(2026, 5, 6).unwrap(),
    )
    .expect("coverage");
    let w19 = report
        .periods
        .iter()
        .find(|p| p.period_id == "2026-W19")
        .expect("W19 in report");
    assert_eq!(w19.status, PeriodStatus::Satisfied);
}

#[test]
fn prepare_rejects_invalid_period_no_run_dir_created() {
    let (_tmp, root) = staged_fixture();
    let (reg, _) = loader::load(&root);

    let opts = PrepareOpts {
        today: Some(NaiveDate::from_ymd_opt(2026, 5, 4).unwrap()),
        period_id: Some("not-a-period".to_string()),
        ..Default::default()
    };
    let err = runner::prepare(&reg, CONTROL, &opts)
        .expect_err("prepare must reject an invalid period id");
    let msg = format!("{err:#}");
    assert!(
        msg.contains("not a valid period"),
        "expected validation error, got: {msg}"
    );
    // Critical: no run dir was allocated.
    let evidence_dir = root.join("evidence/2026/q2/sca-weekly-dependency-scan");
    assert!(
        !evidence_dir.exists(),
        "no run dir should be allocated when prepare rejects --period"
    );
}

#[test]
fn prepare_canonicalizes_operator_period_spelling() {
    let (_tmp, root) = staged_fixture();
    let (reg, _) = loader::load(&root);
    let opts = PrepareOpts {
        today: Some(NaiveDate::from_ymd_opt(2026, 5, 4).unwrap()),
        period_id: Some("2026-w19".into()),
        ..Default::default()
    };
    let ctx = runner::prepare(&reg, CONTROL, &opts).expect("prepare");
    assert_eq!(
        ctx.period_id.as_deref(),
        Some("2026-W19"),
        "sealed period ids must be canonical or coverage can never match them"
    );
}