feat: finish the ai plugin (B18)

plugins/fleets/tests/backend/service.test.ts

@@ -0,0 +1,38 @@
+import { afterEach, describe, expect, it } from "vitest";
+import { startServer, type TestServer } from "./helpers";
+
+let server: TestServer | null = null;
+
+afterEach(async () => {
+  await server?.close();
+  server = null;
+});
+
+interface FleetsService {
+  create: (input: { name: string }) => Promise<{ id: number; name: string }>;
+  addMember: (fleetId: number, hostId: number) => Promise<void>;
+}
+
+describe("fleets.access", () => {
+  it("needs fleets.manage to change a fleet", async () => {
+    server = await startServer({ permissions: ["fleets.view"] });
+    const service = server.mock.services.get("fleets.access") as FleetsService;
+
+    await expect(
+      server.mock.ctx.asUser("user-1", () => service.create({ name: "prod" })),
+    ).rejects.toThrow("fleets.manage");
+  });
+
+  it("adds only hosts the caller can see", async () => {
+    server = await startServer();
+    const service = server.mock.services.get("fleets.access") as FleetsService;
+    const run = <T>(fn: () => Promise<T>) =>
+      server!.mock.ctx.asUser("user-1", fn);
+
+    const fleet = await run(() => service.create({ name: "prod" }));
+    await run(() => service.addMember(fleet.id, 10));
+    await expect(run(() => service.addMember(fleet.id, 99))).rejects.toThrow(
+      "Host not found",
+    );
+  });
+});