import { describe, expect, it } from "vitest";
import { createRng, normalizeSeed } from "../../src/game/chase/rng";

describe("chase rng", () => {
  it("generates the same sequence for the same seed", () => {
    const seed = 12345;
    const rngA = createRng(seed);
    const rngB = createRng(seed);

    const sequenceA = Array.from({ length: 5 }, () => rngA());
    const sequenceB = Array.from({ length: 5 }, () => rngB());

    expect(sequenceA).toEqual(sequenceB);
  });

  it("normalizeSeed returns a number for undefined input", () => {
    expect(typeof normalizeSeed(undefined)).toBe("number");
  });

  it("normalizeSeed returns a number for empty string", () => {
    expect(typeof normalizeSeed("")).toBe("number");
  });

  it("normalizeSeed returns a number for non-numeric string", () => {
    expect(typeof normalizeSeed("abc")).toBe("number");
  });
});