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import { mapArray, indexArray, createSignal, createMemo, createRoot } from "../src";
describe("Map operator", () => {  test("simple mapArray", () => {    createRoot(() => {      const [s, set] = createSignal([1, 2, 3, 4]),        r = createMemo(mapArray(s, v => v * 2));      expect(r()).toEqual([2, 4, 6, 8]);      set([3, 4, 5]);      expect(r()).toEqual([6, 8, 10]);    });  });
  test("show fallback", () => {    createRoot(() => {      const [s, set] = createSignal([1, 2, 3, 4]),        double = mapArray<number, number | string>(s, v => v * 2, {          fallback: () => "Empty"        }),        r = createMemo(double);      expect(r()).toEqual([2, 4, 6, 8]);      set([]);      expect(r()).toEqual(["Empty"]);      set([3, 4, 5]);      expect(r()).toEqual([6, 8, 10]);    });  });});
describe("Index operator", () => {  test("simple indexArray", () => {    createRoot(() => {      const [s, set] = createSignal([1, 2, 3, 4]),        r = createMemo(indexArray(s, v => v() * 2));      expect(r()).toEqual([2, 4, 6, 8]);    });  });

  test("show fallback", () => {    createRoot(() => {      const [s, set] = createSignal([1, 2, 3, 4]),        double = indexArray<number, number | string>(s, v => v() * 2, {          fallback: () => "Empty"        }),        r = createMemo(double);      expect(r()).toEqual([2, 4, 6, 8]);      set([]);      expect(r()).toEqual(["Empty"]);      set([3, 4, 5]);      expect(r()).toEqual([6, 8, 10]);    });  });});