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import { assert, assertEquals } from "std/testing/asserts.ts";import { SEP } from "std/path/separator.ts";import { existsDir, existsFile } from "../lib/fs.ts";
Deno.test(`lib/fs.ts: existsDir`, async () => {  // true test cases  const dir = await Deno.makeTempDir();  assert(await existsDir(dir));  assert(await existsDir(await Deno.realPath(getStandardFolder())));  // false test cases  const file = await Deno.makeTempFile();  assertEquals(await existsDir(file), false);  assertEquals(await existsDir(`${dir}${SEP}foo${SEP}bar`), false);});
Deno.test(`lib/fs.ts: existsFile`, async () => {  // true test cases  const file = await Deno.makeTempFile();  assert(await existsFile(file));  // false test cases  const dir = await Deno.makeTempDir();  assert(!await existsFile(`${dir}`));  assert(!await existsFile(`${dir}${SEP}foo${SEP}bar`));});
/** * Returns an operating system-specific * example folder. * @returns 'C:\Windows' for Windows or *  '/tmp' for unix-based operating systems */const getStandardFolder = () => {  return Deno.build.os === "windows" ? "C:\\Windows" : "/tmp";};