wrand - tests 2

tests.ts

  it("should throw an error if created with a wrong set of items", () => {
    // Duplicate item
    expect(
      () => new RandomPicker([...items, { original: "Platinum", weight: 5 }])
    ).toThrow();

    // Empty list
    expect(() => new RandomPicker([])).toThrow();

    // Negative weight
    expect(
      () => new RandomPicker([{ original: "Wood", weight: -5 }])
    ).toThrow();
  });