Profile page UI and functionality implemented

tests/unit/rulesDuplicateRoute.test.ts

@@ -0,0 +1,105 @@
+import { NextRequest } from "next/server";
+import { beforeEach, describe, expect, it, vi } from "vitest";
+
+const isDatabaseConfiguredMock = vi.fn();
+const findUniqueMock = vi.fn();
+const createMock = vi.fn();
+const getSessionUserMock = vi.fn();
+
+vi.mock("../../lib/server/env", () => ({
+  isDatabaseConfigured: () => isDatabaseConfiguredMock(),
+}));
+
+vi.mock("../../lib/server/db", () => ({
+  prisma: {
+    publishedRule: {
+      findUnique: (...args: unknown[]) => findUniqueMock(...args),
+      create: (...args: unknown[]) => createMock(...args),
+    },
+  },
+}));
+
+vi.mock("../../lib/server/session", () => ({
+  getSessionUser: () => getSessionUserMock(),
+}));
+
+import { POST } from "../../app/api/rules/[id]/duplicate/route";
+
+function makeContext(id: string) {
+  return { params: Promise.resolve({ id }) };
+}
+
+beforeEach(() => {
+  isDatabaseConfiguredMock.mockReset();
+  findUniqueMock.mockReset();
+  createMock.mockReset();
+  getSessionUserMock.mockReset();
+});
+
+describe("POST /api/rules/[id]/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/rules/r1/duplicate"),
+      makeContext("r1"),
+    );
+    expect(res.status).toBe(401);
+  });
+
+  it("returns 404 when the source rule does not exist", async () => {
+    isDatabaseConfiguredMock.mockReturnValue(true);
+    getSessionUserMock.mockResolvedValue({ id: "u1", email: "a@b.c" });
+    findUniqueMock.mockResolvedValueOnce(null);
+    const res = await POST(
+      new NextRequest("https://x.test/api/rules/missing/duplicate"),
+      makeContext("missing"),
+    );
+    expect(res.status).toBe(404);
+  });
+
+  it("returns 403 when the user does not own the source rule", async () => {
+    isDatabaseConfiguredMock.mockReturnValue(true);
+    getSessionUserMock.mockResolvedValue({ id: "u1", email: "a@b.c" });
+    findUniqueMock.mockResolvedValueOnce({
+      id: "r1",
+      userId: "other",
+      title: "T",
+      summary: null,
+      document: {},
+    });
+    const res = await POST(
+      new NextRequest("https://x.test/api/rules/r1/duplicate"),
+      makeContext("r1"),
+    );
+    expect(res.status).toBe(403);
+    expect(createMock).not.toHaveBeenCalled();
+  });
+
+  it("returns 201-style 200 with the new rule when duplicate succeeds", async () => {
+    isDatabaseConfiguredMock.mockReturnValue(true);
+    getSessionUserMock.mockResolvedValue({ id: "u1", email: "a@b.c" });
+    findUniqueMock.mockResolvedValueOnce({
+      id: "r1",
+      userId: "u1",
+      title: "Original",
+      summary: "S",
+      document: { x: 1 },
+    });
+    createMock.mockResolvedValueOnce({
+      id: "r2",
+      title: "Original (Copy)",
+      summary: "S",
+      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/rules/r1/duplicate"),
+      makeContext("r1"),
+    );
+    expect(res.status).toBe(200);
+    const body = (await res.json()) as { rule: { id: string; title: string } };
+    expect(body.rule.id).toBe("r2");
+    expect(body.rule.title).toBe("Original (Copy)");
+  });
+});