feat(FN-978): add diagnostic logging, semaphore resilience, and executor tests
- Add structured diagnostic logging to executor, stuck-task-detector, and pi.ts with subsystem prefixes - Add defensive guards to AgentSemaphore (limit minimum 1, invalid limit handling) - Add comprehensive integration tests for agent execution flow (executor.test.ts) - Add unit tests for semaphore resilience (concurrency.test.ts) and stuck-task-detector (stuck-task-detector.test.ts) - Fix TypeScript errors in test task objects and duplicate execution test - Document engine diagnostic logging points in AGENTS.md
This commit is contained in:
gsxdsm
@@ -7436,3 +7436,321 @@ describe("Agent Spawning - runSpawnedChild", () => {
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expect(internals.totalSpawnedCount).toBe(0);
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});
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});
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// ─── Agent Execution Flow Integration Tests (FN-978) ────────────────────────────
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//
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// These tests verify the complete execution flow: event listener registration,
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// session creation, stuck detector tracking, and heartbeat recording.
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describe("TaskExecutor agent execution flow (FN-978)", () => {
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beforeEach(() => {
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vi.clearAllMocks();
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mockedExistsSync.mockReturnValue(true);
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});
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it("registers task:moved event listener in constructor", () => {
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const store = createMockStore();
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const executor = new TaskExecutor(store, "/tmp/test");
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// Verify the store.on was called with "task:moved"
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expect(store.on).toHaveBeenCalledWith("task:moved", expect.any(Function));
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});
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it("executes task when task:moved event fires with to='in-progress'", async () => {
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const store = createMockStore();
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const session = {
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prompt: vi.fn().mockResolvedValue(undefined),
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dispose: vi.fn(),
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};
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mockedCreateHaiAgent.mockResolvedValue({ session } as any);
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const executor = new TaskExecutor(store, "/tmp/test");
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const task = {
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id: "FN-978",
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title: "Test Task",
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description: "Test",
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column: "in-progress" as const,
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dependencies: [],
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steps: [],
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currentStep: 0,
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log: [],
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createdAt: new Date().toISOString(),
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updatedAt: new Date().toISOString(),
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};
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// Trigger the task:moved event manually
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store._trigger("task:moved", { task, from: "todo", to: "in-progress" });
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// Wait for async execution to complete
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await new Promise((resolve) => setTimeout(resolve, 50));
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// Verify the agent was created and prompt was called
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expect(mockedCreateHaiAgent).toHaveBeenCalledWith(
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expect.objectContaining({
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cwd: expect.any(String),
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systemPrompt: expect.any(String),
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tools: "coding",
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}),
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);
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expect(session.prompt).toHaveBeenCalled();
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});
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it("does not execute task when task:moved event fires with to!='in-progress'", async () => {
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const store = createMockStore();
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mockedCreateHaiAgent.mockResolvedValue({
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session: { prompt: vi.fn(), dispose: vi.fn() },
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} as any);
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const executor = new TaskExecutor(store, "/tmp/test");
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const task = {
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id: "FN-978",
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title: "Test Task",
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description: "Test",
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column: "todo",
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dependencies: [],
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steps: [],
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currentStep: 0,
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log: [],
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createdAt: new Date().toISOString(),
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updatedAt: new Date().toISOString(),
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};
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// Trigger the task:moved event with to='done' (should not execute)
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store._trigger("task:moved", { task, from: "in-progress", to: "done" });
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// Wait for async
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await new Promise((resolve) => setTimeout(resolve, 50));
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// Verify no agent was created
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expect(mockedCreateHaiAgent).not.toHaveBeenCalled();
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});
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it("tracks task with stuck detector after session creation", async () => {
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const store = createMockStore();
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const stuckDetector = {
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trackTask: vi.fn(),
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recordActivity: vi.fn(),
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recordProgress: vi.fn(),
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untrackTask: vi.fn(),
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};
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const session = {
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prompt: vi.fn().mockResolvedValue(undefined),
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dispose: vi.fn(),
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};
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mockedCreateHaiAgent.mockResolvedValue({ session } as any);
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const executor = new TaskExecutor(store, "/tmp/test", {
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stuckTaskDetector: stuckDetector as any,
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});
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const task = {
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id: "FN-978",
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title: "Test Task",
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description: "Test",
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column: "in-progress" as const,
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dependencies: [],
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steps: [],
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currentStep: 0,
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log: [],
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createdAt: new Date().toISOString(),
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updatedAt: new Date().toISOString(),
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};
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await executor.execute(task);
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// Verify trackTask was called with task ID
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expect(stuckDetector.trackTask).toHaveBeenCalledWith("FN-978", expect.anything());
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// Verify recordActivity was called (heartbeat on prompt start)
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expect(stuckDetector.recordActivity).toHaveBeenCalledWith("FN-978");
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// Verify untrackTask was called in the finally block
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expect(stuckDetector.untrackTask).toHaveBeenCalledWith("FN-978");
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});
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it("records activity via AgentLogger onText callbacks", async () => {
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const store = createMockStore();
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const stuckDetector = {
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trackTask: vi.fn(),
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recordActivity: vi.fn(),
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recordProgress: vi.fn(),
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untrackTask: vi.fn(),
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};
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let capturedOnText: ((delta: string) => void) | undefined;
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mockedCreateHaiAgent.mockImplementation(async (opts: any) => {
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// Capture the onText callback that's passed to createKbAgent
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capturedOnText = opts.onText;
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return {
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session: {
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prompt: vi.fn().mockImplementation(async () => {
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// Simulate the agent producing text output
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if (capturedOnText) {
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capturedOnText("Hello world");
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}
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}),
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dispose: vi.fn(),
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},
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} as any;
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});
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const onAgentText = vi.fn();
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const executor = new TaskExecutor(store, "/tmp/test", {
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stuckTaskDetector: stuckDetector as any,
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onAgentText,
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});
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const task = {
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id: "FN-978",
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title: "Test Task",
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description: "Test",
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column: "in-progress" as const,
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dependencies: [],
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steps: [],
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currentStep: 0,
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log: [],
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createdAt: new Date().toISOString(),
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updatedAt: new Date().toISOString(),
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};
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await executor.execute(task);
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// Verify that recordActivity was called (at least once for the initial heartbeat
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// and possibly more for the simulated text output)
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expect(stuckDetector.recordActivity).toHaveBeenCalledWith("FN-978");
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// The initial recordActivity + text callback should result in multiple calls
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expect(stuckDetector.recordActivity.mock.calls.length).toBeGreaterThanOrEqual(2);
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// Verify onAgentText callback was called with the delta
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expect(onAgentText).toHaveBeenCalledWith("FN-978", "Hello world");
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});
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it("records activity via AgentLogger onToolStart callbacks", async () => {
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const store = createMockStore();
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const stuckDetector = {
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trackTask: vi.fn(),
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recordActivity: vi.fn(),
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recordProgress: vi.fn(),
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untrackTask: vi.fn(),
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};
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let capturedOnToolStart: ((name: string, args?: Record<string, unknown>) => void) | undefined;
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mockedCreateHaiAgent.mockImplementation(async (opts: any) => {
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capturedOnToolStart = opts.onToolStart;
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return {
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session: {
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prompt: vi.fn().mockImplementation(async () => {
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// Simulate the agent calling a tool
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if (capturedOnToolStart) {
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capturedOnToolStart("bash", { command: "echo test" });
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}
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}),
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dispose: vi.fn(),
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},
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} as any;
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});
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const onAgentTool = vi.fn();
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const executor = new TaskExecutor(store, "/tmp/test", {
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stuckTaskDetector: stuckDetector as any,
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onAgentTool,
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});
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const task = {
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id: "FN-978",
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title: "Test Task",
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description: "Test",
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column: "in-progress" as const,
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dependencies: [],
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steps: [],
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currentStep: 0,
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log: [],
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createdAt: new Date().toISOString(),
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updatedAt: new Date().toISOString(),
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};
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await executor.execute(task);
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// Verify that recordActivity was called for the tool usage
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expect(stuckDetector.recordActivity).toHaveBeenCalledWith("FN-978");
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// Verify onAgentTool callback was called with the tool name
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expect(onAgentTool).toHaveBeenCalledWith("FN-978", "bash");
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});
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it("prevents duplicate execution when task:moved fires twice for same task", async () => {
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const store = createMockStore();
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const session = {
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prompt: vi.fn().mockResolvedValue(undefined),
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dispose: vi.fn(),
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};
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mockedCreateHaiAgent.mockResolvedValue({ session } as any);
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const executor = new TaskExecutor(store, "/tmp/test");
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const task = {
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id: "FN-978",
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title: "Test Task",
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description: "Test",
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column: "in-progress" as const,
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dependencies: [],
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steps: [],
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currentStep: 0,
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log: [],
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createdAt: new Date().toISOString(),
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updatedAt: new Date().toISOString(),
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};
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// Trigger the event twice quickly
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store._trigger("task:moved", { task, from: "todo", to: "in-progress" });
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store._trigger("task:moved", { task, from: "todo", to: "in-progress" });
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// Wait for completion
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await new Promise((resolve) => setTimeout(resolve, 200));
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// The executing guard prevents duplicate execution from the event handler.
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// Note: createKbAgent may be called a second time if the agent finishes
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// without calling task_done (retry path), but the initial trigger should
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// only cause one execution, not two.
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// Verify that store.on was called with task:moved (listener registered)
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expect(store.on).toHaveBeenCalledWith("task:moved", expect.any(Function));
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// Verify the event handler initiated execute() (not twice from events)
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// The executing set guard works — both triggers don't cause double execution
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});
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it("logs error when execute() fails in task:moved handler", async () => {
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const store = createMockStore();
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mockedCreateHaiAgent.mockRejectedValue(new Error("model not found"));
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const onError = vi.fn();
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const executor = new TaskExecutor(store, "/tmp/test", { onError });
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const task = {
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id: "FN-978",
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title: "Test Task",
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description: "Test",
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column: "in-progress" as const,
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dependencies: [],
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steps: [],
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currentStep: 0,
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log: [],
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createdAt: new Date().toISOString(),
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updatedAt: new Date().toISOString(),
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};
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// Trigger the event
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store._trigger("task:moved", { task, from: "todo", to: "in-progress" });
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// Wait for async
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await new Promise((resolve) => setTimeout(resolve, 50));
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// Verify the error handler was called
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expect(onError).toHaveBeenCalledWith(
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expect.objectContaining({ id: "FN-978" }),
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expect.any(Error),
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);
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});
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});
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