Refine use cases rule examples

tests/unit/useCasesDuplicateRoute.test.ts

@@ -0,0 +1,98 @@
+import { NextRequest } from "next/server";
+import { beforeEach, describe, expect, it, vi } from "vitest";
+
+const isDatabaseConfiguredMock = vi.fn();
+const createMock = vi.fn();
+const getSessionUserMock = vi.fn();
+
+vi.mock("../../lib/server/env", () => ({
+  isDatabaseConfigured: () => isDatabaseConfiguredMock(),
+}));
+
+vi.mock("../../lib/server/db", () => ({
+  prisma: {
+    publishedRule: {
+      create: (...args: unknown[]) => createMock(...args),
+    },
+  },
+}));
+
+vi.mock("../../lib/server/session", () => ({
+  getSessionUser: () => getSessionUserMock(),
+}));
+
+import { POST } from "../../app/api/use-cases/[slug]/duplicate/route";
+
+function makeContext(slug: string) {
+  return { params: Promise.resolve({ slug }) };
+}
+
+beforeEach(() => {
+  isDatabaseConfiguredMock.mockReset();
+  createMock.mockReset();
+  getSessionUserMock.mockReset();
+});
+
+describe("POST /api/use-cases/[slug]/duplicate", () => {
+  it("returns 401 when not signed in", async () => {
+    isDatabaseConfiguredMock.mockReturnValue(true);
+    getSessionUserMock.mockResolvedValue(null);
+    const res = await POST(
+      new NextRequest("https://x.test/api/use-cases/food-not-bombs/duplicate"),
+      makeContext("food-not-bombs"),
+    );
+    expect(res.status).toBe(401);
+  });
+
+  it("returns 404 for an unknown slug", async () => {
+    isDatabaseConfiguredMock.mockReturnValue(true);
+    getSessionUserMock.mockResolvedValue({ id: "u1", email: "a@b.c" });
+    const res = await POST(
+      new NextRequest("https://x.test/api/use-cases/unknown/duplicate"),
+      makeContext("unknown"),
+    );
+    expect(res.status).toBe(404);
+    expect(createMock).not.toHaveBeenCalled();
+  });
+
+  it("creates a published rule from the use-case fixture", async () => {
+    isDatabaseConfiguredMock.mockReturnValue(true);
+    getSessionUserMock.mockResolvedValue({ id: "u1", email: "a@b.c" });
+    createMock.mockResolvedValueOnce({
+      id: "r-new",
+      title: "Food Not Bombs Boulder Template (Copy)",
+      summary: "Summary",
+      createdAt: new Date("2026-01-01T00:00:00Z"),
+      updatedAt: new Date("2026-01-01T00:00:00Z"),
+    });
+
+    const res = await POST(
+      new NextRequest(
+        "https://x.test/api/use-cases/food-not-bombs/duplicate",
+      ),
+      makeContext("food-not-bombs"),
+    );
+
+    expect(res.status).toBe(200);
+    const body = (await res.json()) as { rule: { id: string; title: string } };
+    expect(body.rule.id).toBe("r-new");
+    expect(createMock).toHaveBeenCalledWith(
+      expect.objectContaining({
+        data: expect.objectContaining({
+          userId: "u1",
+          title: "Food Not Bombs Boulder Template (Copy)",
+          document: expect.objectContaining({
+            methodSelections: expect.objectContaining({
+              membership: expect.arrayContaining([
+                expect.objectContaining({ id: expect.any(String), label: expect.any(String) }),
+              ]),
+            }),
+            coreValues: expect.arrayContaining([
+              expect.objectContaining({ chipId: expect.any(String), label: expect.any(String) }),
+            ]),
+          }),
+        }),
+      }),
+    );
+  });
+});