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import { assertEquals } from "https://deno.land/std@0.155.0/testing/asserts.ts";
import CombinationIterator from "./index.ts";
Deno.test("iterator-for-combination", () => {    const res = [];    const iterator: CombinationIterator = new CombinationIterator("abc", 2); // 创建迭代器 iterator    res.push(iterator.next()); // 返回 "ab"    res.push(iterator.hasNext()); // 返回 true    res.push(iterator.next()); // 返回 "ac"    res.push(iterator.hasNext()); // 返回 true    res.push(iterator.next()); // 返回 "bc"    res.push(iterator.hasNext()); // 返回 false    assertEquals(res, ["ab", true, "ac", true, "bc", false]);});