tests: add coverage for src/actions/ (15 files) and src/lib/{admin,auth} (3 files)

- src/actions coverage: 2.4% -> 13.55%
- src/lib/admin coverage: 44.3% -> 84.81%
- src/lib/auth coverage: 90.52%
- vitest.config.ts: exclude .next.prev/ from test discovery

src/actions/admin-bans.test.ts

@@ -0,0 +1,70 @@
+import { revalidatePath } from "next/cache";
+import { beforeEach, describe, expect, it, vi } from "vitest";
+import { requirePermissionRateLimited } from "@/lib/admin/guard";
+import { PERMS } from "@/lib/permissions";
+import { prisma } from "@/lib/prisma";
+import { rcon } from "@/lib/services/rcon";
+import { logStaffActivity } from "@/lib/services/staff-activity";
+import { createBan, liftBan } from "./admin-bans";
+
+vi.mock("@/lib/admin/guard", () => ({ requirePermissionRateLimited: vi.fn() }));
+vi.mock("@/lib/permissions", () => ({ PERMS: { USERS_BAN: "users.ban" } }));
+vi.mock("@/lib/prisma", () => ({
+	prisma: {
+		user: { findUnique: vi.fn() },
+		ban: { create: vi.fn(), delete: vi.fn() },
+	},
+}));
+vi.mock("@/lib/services/rcon", () => ({ rcon: { disconnectUser: vi.fn() } }));
+vi.mock("@/lib/services/staff-activity", () => ({ logStaffActivity: vi.fn() }));
+vi.mock("next/cache", () => ({ revalidatePath: vi.fn() }));
+
+const staff = { id: 1, rank: 7, username: "admin" };
+const fakeForm = (data: Record<string, string>) => ({
+	get: (key: string) => data[key] ?? null,
+});
+
+beforeEach(() => {
+	vi.clearAllMocks();
+	vi.mocked(requirePermissionRateLimited).mockResolvedValue(staff as never);
+});
+
+describe("createBan", () => {
+	it("creates a ban for valid inputs", async () => {
+		vi.mocked(prisma.user.findUnique).mockResolvedValue({
+			username: "baduser",
+		} as never);
+		await createBan(
+			fakeForm({
+				userId: "42",
+				reason: "Spam",
+				hours: "24",
+				type: "account",
+			}) as unknown as FormData,
+		);
+		expect(prisma.ban.create).toHaveBeenCalledWith({
+			data: expect.objectContaining({ userId: 42, type: "account" }),
+		});
+		expect(rcon.disconnectUser).toHaveBeenCalledWith(42, "baduser");
+		expect(revalidatePath).toHaveBeenCalledWith("/admin/bans");
+	});
+
+	it("returns early when userId is invalid", async () => {
+		await createBan(
+			fakeForm({
+				userId: "0",
+				hours: "1",
+				type: "account",
+			}) as unknown as FormData,
+		);
+		expect(prisma.ban.create).not.toHaveBeenCalled();
+	});
+});
+
+describe("liftBan", () => {
+	it("deletes ban and revalidates", async () => {
+		await liftBan(fakeForm({ id: "42" }) as unknown as FormData);
+		expect(prisma.ban.delete).toHaveBeenCalledWith({ where: { id: 42 } });
+		expect(revalidatePath).toHaveBeenCalledWith("/admin/bans");
+	});
+});