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// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.import { assertEquals, assertStrictEquals } from "../assert/mod.ts";import { debounce, type DebouncedFunction } from "./debounce.ts";import { delay } from "./delay.ts";
Deno.test("debounce() handles called", async () => {  let called = 0;  const d = debounce(() => called++, 100);  d();  d();  d();  assertEquals(called, 0);  assertEquals(d.pending, true);  await delay(200);  assertEquals(called, 1);  assertEquals(d.pending, false);});
Deno.test("debounce() handles cancelled", async () => {  let called = 0;  const d = debounce(() => called++, 100);  d();  d();  d();  assertEquals(called, 0);  assertEquals(d.pending, true);  d.clear();  await delay(200);  assertEquals(called, 0);  assertEquals(d.pending, false);});
Deno.test("debounce() handles flush", () => {  let called = 0;  const d = debounce(() => called++, 100);  d();  d();  d();  assertEquals(called, 0);  assertEquals(d.pending, true);  d.flush();  assertEquals(called, 1);  assertEquals(d.pending, false);});
Deno.test("debounce() handles params and context", async () => {  const params: Array<string | number> = [];  const d: DebouncedFunction<[string, number]> = debounce(    function (param1: string, param2: number) {      assertEquals(d.pending, false);      params.push(param1);      params.push(param2);      assertStrictEquals(d, this);    },    100,  );  // @ts-expect-error Argument of type 'number' is not assignable to parameter of type 'string'.  d(1, 1);  d("foo", 1);  d("bar", 1);  d("baz", 1);  assertEquals(params.length, 0);  assertEquals(d.pending, true);  await delay(200);  assertEquals(params, ["baz", 1]);  assertEquals(d.pending, false);});
Deno.test("debounce() handles number and string types", async () => {  const params: Array<string> = [];  const fn = (param: string) => params.push(param);  const d: DebouncedFunction<[string]> = debounce(fn, 100);  // @ts-expect-error Argument of type 'number' is not assignable to parameter of type 'string'.  d(1);  d("foo");  assertEquals(params.length, 0);  assertEquals(d.pending, true);  await delay(200);  assertEquals(params, ["foo"]);  assertEquals(d.pending, false);});