tests: cover agent sequencing, tick watchdog, presence fingerprint

src/infra/agent-events.test.ts

@@ -0,0 +1,23 @@
+import { describe, expect, test } from "vitest";
+import { emitAgentEvent, onAgentEvent } from "./agent-events.js";
+
+describe("agent-events sequencing", () => {
+  test("maintains monotonic seq per runId", async () => {
+    const seen: Record<string, number[]> = {};
+    const stop = onAgentEvent((evt) => {
+      const list = seen[evt.runId] ?? [];
+      seen[evt.runId] = list;
+      list.push(evt.seq);
+    });
+
+    emitAgentEvent({ runId: "run-1", stream: "job", data: {} });
+    emitAgentEvent({ runId: "run-1", stream: "job", data: {} });
+    emitAgentEvent({ runId: "run-2", stream: "job", data: {} });
+    emitAgentEvent({ runId: "run-1", stream: "job", data: {} });
+
+    stop();
+
+    expect(seen["run-1"]).toEqual([1, 2, 3]);
+    expect(seen["run-2"]).toEqual([1]);
+  });
+});