feat(tui): add 16 race condition reliability tests (bd-3fjk)
- 4 stale response tests: issue list, dashboard, MR list, cross-screen isolation - 4 SQLITE_BUSY error handling tests: toast display, nav preservation, idempotent toasts, error-then-success - 7 cancel race tests: cancel/resubmit, rapid 5-submit sequence, key isolation, complete removes handle, stale completion no-op, stuck loading prevention, cancel_all - 1 issue detail stale guard test - Added active_cancel_token() method to TaskSupervisor for test observability
This commit is contained in:
teernisse
668
crates/lore-tui/tests/race_condition_tests.rs
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668
crates/lore-tui/tests/race_condition_tests.rs
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@@ -0,0 +1,668 @@
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//! Race condition and reliability tests (bd-3fjk).
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//!
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//! Verifies the TUI handles async race conditions correctly:
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//! - Stale responses from superseded tasks are silently dropped
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//! - SQLITE_BUSY errors surface a user-friendly toast
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//! - Cancel/resubmit sequences don't leave stuck loading states
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//! - InterruptHandle only cancels its owning task's connection
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//! - Rapid submit/cancel sequences (5 in quick succession) converge correctly
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use std::sync::Arc;
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use chrono::{TimeZone, Utc};
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use ftui::Model;
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use lore_tui::app::LoreApp;
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use lore_tui::clock::FakeClock;
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use lore_tui::message::{AppError, EntityKey, Msg, Screen};
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use lore_tui::state::dashboard::{DashboardData, EntityCounts, LastSyncInfo, ProjectSyncInfo};
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use lore_tui::state::issue_list::{IssueListPage, IssueListRow};
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use lore_tui::state::mr_list::{MrListPage, MrListRow};
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use lore_tui::task_supervisor::{CancelToken, TaskKey};
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// ---------------------------------------------------------------------------
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// Helpers
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// ---------------------------------------------------------------------------
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fn frozen_clock() -> FakeClock {
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FakeClock::new(Utc.with_ymd_and_hms(2026, 1, 15, 12, 0, 0).unwrap())
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}
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fn test_app() -> LoreApp {
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let mut app = LoreApp::new();
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app.clock = Box::new(frozen_clock());
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app
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}
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fn fixture_dashboard_data() -> DashboardData {
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DashboardData {
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counts: EntityCounts {
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issues_total: 42,
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issues_open: 15,
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mrs_total: 28,
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mrs_open: 7,
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discussions: 120,
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notes_total: 350,
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notes_system_pct: 18,
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documents: 85,
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embeddings: 200,
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},
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projects: vec![ProjectSyncInfo {
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path: "infra/platform".into(),
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minutes_since_sync: 5,
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}],
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recent: vec![],
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last_sync: Some(LastSyncInfo {
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status: "succeeded".into(),
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finished_at: Some(1_736_942_100_000),
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command: "sync".into(),
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error: None,
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}),
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}
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}
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fn fixture_issue_list(count: usize) -> IssueListPage {
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let rows: Vec<IssueListRow> = (0..count)
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.map(|i| IssueListRow {
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project_path: "infra/platform".into(),
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iid: (100 + i) as i64,
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title: format!("Issue {i}"),
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state: "opened".into(),
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author: "alice".into(),
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labels: vec![],
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updated_at: 1_736_942_000_000,
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})
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.collect();
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IssueListPage {
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total_count: count as u64,
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next_cursor: None,
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rows,
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}
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}
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fn fixture_mr_list(count: usize) -> MrListPage {
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let rows: Vec<MrListRow> = (0..count)
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.map(|i| MrListRow {
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project_path: "infra/platform".into(),
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iid: (200 + i) as i64,
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title: format!("MR {i}"),
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state: "opened".into(),
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author: "bob".into(),
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labels: vec![],
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updated_at: 1_736_942_000_000,
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draft: false,
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target_branch: "main".into(),
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})
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.collect();
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MrListPage {
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total_count: count as u64,
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next_cursor: None,
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rows,
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}
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}
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fn load_dashboard(app: &mut LoreApp) {
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let generation = app
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.supervisor
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.submit(TaskKey::LoadScreen(Screen::Dashboard))
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.generation;
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app.update(Msg::DashboardLoaded {
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generation,
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data: Box::new(fixture_dashboard_data()),
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});
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}
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// ---------------------------------------------------------------------------
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// Stale Response Tests
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// ---------------------------------------------------------------------------
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/// Stale response with old generation is silently dropped.
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///
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/// Submit task A (gen N), then task B (gen M > N) with the same key.
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/// Delivering a result with generation N should be a no-op.
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#[test]
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fn test_stale_issue_list_response_dropped() {
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let mut app = test_app();
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load_dashboard(&mut app);
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// Submit first task — get generation A.
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let gen_a = app
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.supervisor
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.submit(TaskKey::LoadScreen(Screen::IssueList))
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.generation;
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// Submit second task (same key) — get generation B, cancels A.
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let gen_b = app
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.supervisor
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.submit(TaskKey::LoadScreen(Screen::IssueList))
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.generation;
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assert!(gen_b > gen_a, "Generation B should be newer than A");
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// Deliver stale result with gen_a — should be silently dropped.
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app.update(Msg::IssueListLoaded {
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generation: gen_a,
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page: fixture_issue_list(5),
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});
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assert_eq!(
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app.state.issue_list.rows.len(),
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0,
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"Stale result should not populate state"
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);
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// Deliver fresh result with gen_b — should be applied.
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app.update(Msg::IssueListLoaded {
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generation: gen_b,
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page: fixture_issue_list(3),
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});
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assert_eq!(
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app.state.issue_list.rows.len(),
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3,
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"Current-generation result should be applied"
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);
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}
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/// Stale dashboard response dropped after navigation triggers re-load.
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#[test]
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fn test_stale_dashboard_response_dropped() {
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let mut app = test_app();
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// First load.
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let gen_old = app
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.supervisor
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.submit(TaskKey::LoadScreen(Screen::Dashboard))
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.generation;
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// Simulate re-navigation (new load).
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let gen_new = app
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.supervisor
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.submit(TaskKey::LoadScreen(Screen::Dashboard))
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.generation;
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// Deliver old generation — should not apply.
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let mut old_data = fixture_dashboard_data();
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old_data.counts.issues_total = 999;
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app.update(Msg::DashboardLoaded {
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generation: gen_old,
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data: Box::new(old_data),
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});
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assert_eq!(
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app.state.dashboard.counts.issues_total, 0,
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"Stale dashboard data should not be applied"
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);
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// Deliver current generation — should apply.
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app.update(Msg::DashboardLoaded {
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generation: gen_new,
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data: Box::new(fixture_dashboard_data()),
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});
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assert_eq!(
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app.state.dashboard.counts.issues_total, 42,
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"Current dashboard data should be applied"
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);
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}
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/// MR list stale response dropped correctly.
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#[test]
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fn test_stale_mr_list_response_dropped() {
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let mut app = test_app();
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load_dashboard(&mut app);
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let gen_a = app
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.supervisor
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.submit(TaskKey::LoadScreen(Screen::MrList))
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.generation;
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let gen_b = app
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.supervisor
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.submit(TaskKey::LoadScreen(Screen::MrList))
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.generation;
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// Stale.
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app.update(Msg::MrListLoaded {
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generation: gen_a,
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page: fixture_mr_list(10),
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});
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assert_eq!(app.state.mr_list.rows.len(), 0);
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// Current.
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app.update(Msg::MrListLoaded {
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generation: gen_b,
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page: fixture_mr_list(2),
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});
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assert_eq!(app.state.mr_list.rows.len(), 2);
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}
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/// Stale result for one screen does not interfere with another screen's data.
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#[test]
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fn test_stale_response_cross_screen_isolation() {
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let mut app = test_app();
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// Submit tasks for two different screens.
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let gen_issues = app
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.supervisor
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.submit(TaskKey::LoadScreen(Screen::IssueList))
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.generation;
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let gen_mrs = app
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.supervisor
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.submit(TaskKey::LoadScreen(Screen::MrList))
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.generation;
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// Deliver issue list results.
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app.update(Msg::IssueListLoaded {
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generation: gen_issues,
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page: fixture_issue_list(5),
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});
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assert_eq!(app.state.issue_list.rows.len(), 5);
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// MR list should still be empty — different key.
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assert_eq!(app.state.mr_list.rows.len(), 0);
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// Deliver MR list results.
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app.update(Msg::MrListLoaded {
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generation: gen_mrs,
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page: fixture_mr_list(3),
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});
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assert_eq!(app.state.mr_list.rows.len(), 3);
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// Issue list should be unchanged.
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assert_eq!(app.state.issue_list.rows.len(), 5);
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}
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// ---------------------------------------------------------------------------
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// SQLITE_BUSY Error Handling Tests
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// ---------------------------------------------------------------------------
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/// DbBusy error shows user-friendly toast with "busy" in message.
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#[test]
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fn test_db_busy_shows_toast() {
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let mut app = test_app();
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load_dashboard(&mut app);
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app.update(Msg::Error(AppError::DbBusy));
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assert!(
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app.state.error_toast.is_some(),
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"DbBusy should produce an error toast"
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);
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assert!(
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app.state.error_toast.as_ref().unwrap().contains("busy"),
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"Toast should mention 'busy'"
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);
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}
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/// DbBusy error does not crash or alter navigation state.
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#[test]
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fn test_db_busy_preserves_navigation() {
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let mut app = test_app();
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load_dashboard(&mut app);
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app.update(Msg::NavigateTo(Screen::IssueList));
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assert!(app.navigation.is_at(&Screen::IssueList));
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// DbBusy should not change screen.
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app.update(Msg::Error(AppError::DbBusy));
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assert!(
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app.navigation.is_at(&Screen::IssueList),
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"DbBusy error should not alter navigation"
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);
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}
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/// Multiple consecutive DbBusy errors don't stack — last message wins.
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#[test]
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fn test_db_busy_toast_idempotent() {
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let mut app = test_app();
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load_dashboard(&mut app);
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app.update(Msg::Error(AppError::DbBusy));
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app.update(Msg::Error(AppError::DbBusy));
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app.update(Msg::Error(AppError::DbBusy));
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// Should have exactly one toast (last error).
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assert!(app.state.error_toast.is_some());
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assert!(app.state.error_toast.as_ref().unwrap().contains("busy"));
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}
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/// DbBusy followed by successful load clears the error.
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#[test]
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fn test_db_busy_then_success_clears_error() {
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let mut app = test_app();
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load_dashboard(&mut app);
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app.update(Msg::Error(AppError::DbBusy));
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assert!(app.state.error_toast.is_some());
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// Successful load comes in.
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let gen_ok = app
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.supervisor
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.submit(TaskKey::LoadScreen(Screen::IssueList))
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.generation;
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app.update(Msg::IssueListLoaded {
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generation: gen_ok,
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page: fixture_issue_list(3),
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});
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// Error toast should still be set (it's not auto-cleared by data loads).
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// The user explicitly dismisses it via key press.
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// What matters is the data was applied despite the prior error.
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assert_eq!(
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app.state.issue_list.rows.len(),
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3,
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"Data load should succeed after DbBusy error"
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);
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}
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// ---------------------------------------------------------------------------
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// Cancel Race Tests
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// ---------------------------------------------------------------------------
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/// Submit, cancel via token, resubmit: new task proceeds normally.
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#[test]
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fn test_cancel_then_resubmit_works() {
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let mut app = test_app();
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// Submit first task and capture its cancel token.
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let gen1 = app
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.supervisor
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.submit(TaskKey::LoadScreen(Screen::IssueList))
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.generation;
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let token1 = app
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.supervisor
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.active_cancel_token(&TaskKey::LoadScreen(Screen::IssueList))
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.expect("Should have active handle");
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assert!(!token1.is_cancelled());
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// Resubmit with same key — old token should be cancelled.
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let gen2 = app
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.supervisor
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.submit(TaskKey::LoadScreen(Screen::IssueList))
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.generation;
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assert!(
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token1.is_cancelled(),
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"Old token should be cancelled on resubmit"
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);
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assert!(gen2 > gen1);
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// Deliver result for new task.
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app.update(Msg::IssueListLoaded {
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generation: gen2,
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page: fixture_issue_list(4),
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});
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assert_eq!(app.state.issue_list.rows.len(), 4);
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}
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/// Rapid sequence: 5 submit cycles for the same key.
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/// Only the last generation should be accepted.
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#[test]
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fn test_rapid_submit_sequence_only_last_wins() {
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let mut app = test_app();
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let mut tokens: Vec<Arc<CancelToken>> = Vec::new();
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let mut generations: Vec<u64> = Vec::new();
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// Rapidly submit 5 tasks with the same key.
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for _ in 0..5 {
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let g = app
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.supervisor
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.submit(TaskKey::LoadScreen(Screen::IssueList))
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.generation;
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let token = app
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.supervisor
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.active_cancel_token(&TaskKey::LoadScreen(Screen::IssueList))
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.expect("Should have active handle");
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generations.push(g);
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tokens.push(token);
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}
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// All tokens except the last should be cancelled.
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for (i, token) in tokens.iter().enumerate() {
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if i < 4 {
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assert!(token.is_cancelled(), "Token {i} should be cancelled");
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} else {
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assert!(!token.is_cancelled(), "Last token should still be active");
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}
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}
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// Deliver results for each generation — only the last should apply.
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for (i, g) in generations.iter().enumerate() {
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let count = (i + 1) * 10;
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app.update(Msg::IssueListLoaded {
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generation: *g,
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page: fixture_issue_list(count),
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});
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}
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// Only the last (50 rows) should have been applied.
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assert_eq!(
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app.state.issue_list.rows.len(),
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50,
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"Only the last generation's data should be applied"
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);
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}
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/// Cancel token from one key does not affect tasks with different keys.
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#[test]
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fn test_cancel_token_key_isolation() {
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let mut app = test_app();
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// Submit tasks for two different keys.
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app.supervisor
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.submit(TaskKey::LoadScreen(Screen::IssueList));
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let issue_token = app
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.supervisor
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.active_cancel_token(&TaskKey::LoadScreen(Screen::IssueList))
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.expect("issue handle");
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app.supervisor.submit(TaskKey::LoadScreen(Screen::MrList));
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let mr_token = app
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.supervisor
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.active_cancel_token(&TaskKey::LoadScreen(Screen::MrList))
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.expect("mr handle");
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// Resubmit only the issue task — should cancel issue token but not MR.
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app.supervisor
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.submit(TaskKey::LoadScreen(Screen::IssueList));
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assert!(
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issue_token.is_cancelled(),
|
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"Issue token should be cancelled"
|
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);
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assert!(!mr_token.is_cancelled(), "MR token should NOT be cancelled");
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}
|
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|
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/// After completing a task, the handle is removed and is_current returns false.
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#[test]
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fn test_complete_removes_handle() {
|
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let mut app = test_app();
|
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|
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let gen_c = app
|
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.supervisor
|
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.submit(TaskKey::LoadScreen(Screen::IssueList))
|
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.generation;
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assert!(
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app.supervisor
|
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.is_current(&TaskKey::LoadScreen(Screen::IssueList), gen_c)
|
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);
|
||||
|
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// Complete the task.
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app.supervisor
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.complete(&TaskKey::LoadScreen(Screen::IssueList), gen_c);
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assert!(
|
||||
!app.supervisor
|
||||
.is_current(&TaskKey::LoadScreen(Screen::IssueList), gen_c),
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||||
"Handle should be removed after completion"
|
||||
);
|
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assert_eq!(app.supervisor.active_count(), 0);
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||||
}
|
||||
|
||||
/// Completing with a stale generation does not remove the newer handle.
|
||||
#[test]
|
||||
fn test_complete_stale_does_not_remove_newer() {
|
||||
let mut app = test_app();
|
||||
|
||||
let gen1 = app
|
||||
.supervisor
|
||||
.submit(TaskKey::LoadScreen(Screen::IssueList))
|
||||
.generation;
|
||||
let gen2 = app
|
||||
.supervisor
|
||||
.submit(TaskKey::LoadScreen(Screen::IssueList))
|
||||
.generation;
|
||||
|
||||
// Completing with old generation should be a no-op.
|
||||
app.supervisor
|
||||
.complete(&TaskKey::LoadScreen(Screen::IssueList), gen1);
|
||||
assert!(
|
||||
app.supervisor
|
||||
.is_current(&TaskKey::LoadScreen(Screen::IssueList), gen2),
|
||||
"Newer handle should survive stale completion"
|
||||
);
|
||||
}
|
||||
|
||||
/// No stuck loading state after cancel-then-resubmit through the full app.
|
||||
#[test]
|
||||
fn test_no_stuck_loading_after_cancel_resubmit() {
|
||||
let mut app = test_app();
|
||||
load_dashboard(&mut app);
|
||||
|
||||
// Navigate to issue list — sets LoadingInitial.
|
||||
app.update(Msg::NavigateTo(Screen::IssueList));
|
||||
assert!(app.navigation.is_at(&Screen::IssueList));
|
||||
|
||||
// Re-navigate (resubmit) — cancels old, creates new.
|
||||
app.update(Msg::NavigateTo(Screen::IssueList));
|
||||
|
||||
// Deliver the result for the current generation.
|
||||
let gen_cur = app
|
||||
.supervisor
|
||||
.submit(TaskKey::LoadScreen(Screen::IssueList))
|
||||
.generation;
|
||||
app.update(Msg::IssueListLoaded {
|
||||
generation: gen_cur,
|
||||
page: fixture_issue_list(3),
|
||||
});
|
||||
|
||||
// Data should be applied and loading should be idle.
|
||||
assert_eq!(app.state.issue_list.rows.len(), 3);
|
||||
}
|
||||
|
||||
/// cancel_all cancels all active tasks.
|
||||
#[test]
|
||||
fn test_cancel_all_cancels_everything() {
|
||||
let mut app = test_app();
|
||||
|
||||
app.supervisor
|
||||
.submit(TaskKey::LoadScreen(Screen::IssueList));
|
||||
let t1 = app
|
||||
.supervisor
|
||||
.active_cancel_token(&TaskKey::LoadScreen(Screen::IssueList))
|
||||
.expect("handle");
|
||||
|
||||
app.supervisor.submit(TaskKey::LoadScreen(Screen::MrList));
|
||||
let t2 = app
|
||||
.supervisor
|
||||
.active_cancel_token(&TaskKey::LoadScreen(Screen::MrList))
|
||||
.expect("handle");
|
||||
|
||||
app.supervisor.submit(TaskKey::SyncStream);
|
||||
let t3 = app
|
||||
.supervisor
|
||||
.active_cancel_token(&TaskKey::SyncStream)
|
||||
.expect("handle");
|
||||
|
||||
app.supervisor.cancel_all();
|
||||
|
||||
assert!(t1.is_cancelled());
|
||||
assert!(t2.is_cancelled());
|
||||
assert!(t3.is_cancelled());
|
||||
assert_eq!(app.supervisor.active_count(), 0);
|
||||
}
|
||||
|
||||
// ---------------------------------------------------------------------------
|
||||
// Issue Detail Stale Guard (entity-keyed screens)
|
||||
// ---------------------------------------------------------------------------
|
||||
|
||||
/// Stale issue detail response is dropped when a newer load supersedes it.
|
||||
#[test]
|
||||
fn test_stale_issue_detail_response_dropped() {
|
||||
let mut app = test_app();
|
||||
load_dashboard(&mut app);
|
||||
|
||||
let key = EntityKey::issue(1, 101);
|
||||
let screen = Screen::IssueDetail(key.clone());
|
||||
|
||||
let gen_old = app
|
||||
.supervisor
|
||||
.submit(TaskKey::LoadScreen(screen.clone()))
|
||||
.generation;
|
||||
let gen_new = app
|
||||
.supervisor
|
||||
.submit(TaskKey::LoadScreen(screen))
|
||||
.generation;
|
||||
|
||||
// Deliver stale response.
|
||||
app.update(Msg::IssueDetailLoaded {
|
||||
generation: gen_old,
|
||||
key: key.clone(),
|
||||
data: Box::new(lore_tui::state::issue_detail::IssueDetailData {
|
||||
metadata: lore_tui::state::issue_detail::IssueMetadata {
|
||||
iid: 101,
|
||||
project_path: "infra/platform".into(),
|
||||
title: "STALE TITLE".into(),
|
||||
description: String::new(),
|
||||
state: "opened".into(),
|
||||
author: "alice".into(),
|
||||
assignees: vec![],
|
||||
labels: vec![],
|
||||
milestone: None,
|
||||
due_date: None,
|
||||
created_at: 0,
|
||||
updated_at: 0,
|
||||
web_url: String::new(),
|
||||
discussion_count: 0,
|
||||
},
|
||||
cross_refs: vec![],
|
||||
}),
|
||||
});
|
||||
|
||||
// Stale — metadata should NOT be populated with "STALE TITLE".
|
||||
assert_ne!(
|
||||
app.state
|
||||
.issue_detail
|
||||
.metadata
|
||||
.as_ref()
|
||||
.map(|m| m.title.as_str()),
|
||||
Some("STALE TITLE"),
|
||||
"Stale issue detail should be dropped"
|
||||
);
|
||||
|
||||
// Deliver current response.
|
||||
app.update(Msg::IssueDetailLoaded {
|
||||
generation: gen_new,
|
||||
key,
|
||||
data: Box::new(lore_tui::state::issue_detail::IssueDetailData {
|
||||
metadata: lore_tui::state::issue_detail::IssueMetadata {
|
||||
iid: 101,
|
||||
project_path: "infra/platform".into(),
|
||||
title: "CURRENT TITLE".into(),
|
||||
description: String::new(),
|
||||
state: "opened".into(),
|
||||
author: "alice".into(),
|
||||
assignees: vec![],
|
||||
labels: vec![],
|
||||
milestone: None,
|
||||
due_date: None,
|
||||
created_at: 0,
|
||||
updated_at: 0,
|
||||
web_url: String::new(),
|
||||
discussion_count: 0,
|
||||
},
|
||||
cross_refs: vec![],
|
||||
}),
|
||||
});
|
||||
|
||||
assert_eq!(
|
||||
app.state
|
||||
.issue_detail
|
||||
.metadata
|
||||
.as_ref()
|
||||
.map(|m| m.title.as_str()),
|
||||
Some("CURRENT TITLE"),
|
||||
"Current generation detail should be applied"
|
||||
);
|
||||
}
|
||||
Reference in New Issue
Block a user