Add ACP-backed role sessions

test/acp-worker.test.ts

@@ -0,0 +1,37 @@
+import assert from "node:assert/strict";
+import path from "node:path";
+import test from "node:test";
+import { AcpWorker } from "../src/acp/worker.js";
+import { parseConfig } from "../src/config.js";
+import { RoleRegistry } from "../src/roles/role-registry.js";
+
+const fixture = path.resolve("test/fixtures/fake-acp-agent.mjs");
+
+function makeWorker(promptTimeoutMs = 80) {
+  const config = parseConfig({
+    configVersion: 2,
+    acp: { promptTimeoutMs, cancelGraceMs: 30 },
+    backends: [{ id: "kimi", command: process.execPath, args: [fixture] }],
+    defaultRole: "assistant",
+    roles: [{ id: "assistant", backend: "kimi", workspace: path.resolve("."), policy: { permissionMode: "deny" } }],
+    platforms: {}
+  });
+  let crashes = 0;
+  const worker = new AcpWorker(config.backends[0], new RoleRegistry(config).get(), config.acp, () => { crashes++; });
+  return { worker, crashes: () => crashes };
+}
+
+test("worker times out a hung prompt and can be terminated", async () => {
+  const { worker } = makeWorker();
+  await worker.start();
+  await assert.rejects(worker.prompt("hang"), /timed out/);
+  await worker.terminate();
+});
+
+test("worker reports an unexpected ACP subprocess exit", async () => {
+  const current = makeWorker(500);
+  await current.worker.start();
+  await assert.rejects(current.worker.prompt("crash"));
+  await new Promise((resolve) => setTimeout(resolve, 20));
+  assert.equal(current.crashes(), 1);
+});