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-guilds.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 { logStaffActivity } from "@/lib/services/staff-activity";
+import { disbandGuild } from "./admin-guilds";
+
+vi.mock("@/lib/admin/guard", () => ({ requirePermissionRateLimited: vi.fn() }));
+vi.mock("@/lib/permissions", () => ({ PERMS: { USERS_EDIT: "users.edit" } }));
+vi.mock("@/lib/prisma", () => ({
+	prisma: {
+		guilds: { findUnique: vi.fn(), delete: vi.fn() },
+		guildsForumsThreads: { findMany: vi.fn(), deleteMany: vi.fn() },
+		guildsForumsComments: { deleteMany: vi.fn() },
+		guildForumViews: { deleteMany: vi.fn() },
+		guildsMembers: { deleteMany: vi.fn() },
+		rooms: { updateMany: vi.fn() },
+		items: { updateMany: vi.fn() },
+		$transaction: vi.fn(),
+	},
+}));
+vi.mock("@/lib/services/staff-activity", () => ({ logStaffActivity: vi.fn() }));
+vi.mock("next/cache", () => ({ revalidatePath: vi.fn() }));
+
+const staff = { id: 1, rank: 7, username: "admin" };
+const fakeForm = (data: Record<string, string>) => ({
+	get: (key: string) => data[key] ?? null,
+});
+
+beforeEach(() => {
+	vi.clearAllMocks();
+	vi.mocked(requirePermissionRateLimited).mockResolvedValue(staff as never);
+});
+
+describe("disbandGuild", () => {
+	it("disbands guild and cleans related data", async () => {
+		vi.mocked(prisma.guilds.findUnique).mockResolvedValue({
+			id: 1,
+			name: "TestGuild",
+			userId: 42,
+		} as never);
+		vi.mocked(prisma.guildsForumsThreads.findMany).mockResolvedValue([
+			{ id: 10 },
+		] as never);
+		vi.mocked(prisma.$transaction).mockImplementation(async (fn: unknown) => {
+			const tx = {
+				guildsForumsComments: { deleteMany: vi.fn().mockResolvedValue({}) },
+				guildsForumsThreads: {
+					findMany: vi.fn().mockResolvedValue([{ id: 10 }]),
+					deleteMany: vi.fn().mockResolvedValue({}),
+				},
+				guildForumViews: { deleteMany: vi.fn().mockResolvedValue({}) },
+				guildsMembers: { deleteMany: vi.fn().mockResolvedValue({}) },
+				rooms: { updateMany: vi.fn().mockResolvedValue({}) },
+				items: { updateMany: vi.fn().mockResolvedValue({}) },
+				guilds: { delete: vi.fn().mockResolvedValue({}) },
+			} as never;
+			await (fn as (tx: never) => Promise<void>)(tx);
+		});
+		await disbandGuild(fakeForm({ id: "1" }) as unknown as FormData);
+		expect(logStaffActivity).toHaveBeenCalled();
+		expect(revalidatePath).toHaveBeenCalledWith("/admin/guilds");
+	});
+
+	it("returns early when id is not positive", async () => {
+		await disbandGuild(fakeForm({ id: "0" }) as unknown as FormData);
+		expect(prisma.guilds.findUnique).not.toHaveBeenCalled();
+	});
+});