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import { SEP } from "std/path/separator.ts";import { assert, assertEquals } from "std/testing/asserts.ts";import { existsDir, existsFile, restoreUrl, toLocalPath } from "../server/helpers.ts";
Deno.test("server/helper.ts", async (t) => {  await t.step(`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${SEP}bar`), false);  });
  await t.step(`lib/fs.ts: existsFile`, async () => {    // true test cases    const file = await Deno.makeTempFile();    assert(await existsFile(file));    // false test cases    const dir = await Deno.makeTempDir();    assert(!await existsFile(`${dir}`));    assert(!await existsFile(`${dir}${SEP}foo${SEP}bar`));  });
  await t.step("toLocalPath", () => {    assertEquals(toLocalPath("https://foo.com/lib@0.1.0?action"), "/-/foo.com/lib@0.1.0?action");    assertEquals(toLocalPath("https://deno.land/x/aleph@0.1.0/"), "/-/deno.land/x/aleph@0.1.0");    assertEquals(toLocalPath("http://foo.com/bar?lang=us-en"), "/-/http_foo.com/bar?lang=us-en");    assertEquals(toLocalPath("http://foo.com:8080/bar"), "/-/http_foo.com_8080/bar");    assertEquals(toLocalPath("file://foo/bar/"), "file://foo/bar/");    assertEquals(toLocalPath("/foo/bar/"), "/foo/bar/");  });
  await t.step("restoreUrl", () => {    assertEquals(restoreUrl("/-/foo.com/lib@0.1.0?action"), "https://foo.com/lib@0.1.0?action");    assertEquals(restoreUrl("/-/deno.land/x/aleph@0.1.0"), "https://deno.land/x/aleph@0.1.0");    assertEquals(restoreUrl("/-/http_foo.com/bar?lang=us-en"), "http://foo.com/bar?lang=us-en");    assertEquals(restoreUrl("/-/http_foo.com_8080/bar"), "http://foo.com:8080/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";};