import { describe, it, expect } from "vitest";
import { TrenchMap } from "./index";

describe("TrenchMap", () => {
  it("should be immutable", () => {
    const map1 = new TrenchMap<string, number>();
    const map2 = map1.set("a", 1);
    expect(map1.has("a")).toBe(false);
    expect(map2.get("a")).toBe(1);
  });

  it("should handle deletion", () => {
    const map1 = new TrenchMap([["a", 1]]);
    const map2 = map1.delete("a");
    expect(map1.has("a")).toBe(true);
    expect(map2.has("a")).toBe(false);
  });
});