import { describe, expect, it } from "vitest";

import { mergePosterMaterials } from "@/lib/material-poster";

describe("mergePosterMaterials", () => {
  it("combines amounts when leveling and talent materials use the same image", () => {
    expect(mergePosterMaterials([
      { key: "talent", amount: 9, name: "Talent", imageUrl: "/shared.webp" },
      { key: "leveling", amount: 18, name: "Leveling", imageUrl: "/shared.webp" },
    ])).toEqual([
      { key: "talent", amount: 27, name: "Talent", imageUrl: "/shared.webp" },
    ]);
  });

  it("keeps materials without images separate", () => {
    const materials = [
      { key: "first", amount: 1, name: "First", imageUrl: null },
      { key: "second", amount: 2, name: "Second", imageUrl: null },
    ];

    expect(mergePosterMaterials(materials)).toEqual(materials);
  });
});