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// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.import {  assertEquals,  assertRejects,  assertStringIncludes,  assertThrows,} from "../testing/asserts.ts";import * as path from "../path/mod.ts";import { emptyDir, emptyDirSync } from "./empty_dir.ts";
const moduleDir = path.dirname(path.fromFileUrl(import.meta.url));const testdataDir = path.resolve(moduleDir, "testdata");
Deno.test("emptyDirIfItNotExist", async function () {  const testDir = path.join(testdataDir, "empty_dir_test_1");  const testNestDir = path.join(testDir, "nest");  // empty a dir which not exist. then it will create new one  await emptyDir(testNestDir);
  try {    // check the dir    const stat = await Deno.stat(testNestDir);    assertEquals(stat.isDirectory, true);  } finally {    // remove the test dir    await Deno.remove(testDir, { recursive: true });  }});
Deno.test("emptyDirSyncIfItNotExist", function () {  const testDir = path.join(testdataDir, "empty_dir_test_2");  const testNestDir = path.join(testDir, "nest");  // empty a dir which does not exist, then it will a create new one.  emptyDirSync(testNestDir);
  try {    // check the dir    const stat = Deno.statSync(testNestDir);    assertEquals(stat.isDirectory, true);  } finally {    // remove the test dir    Deno.removeSync(testDir, { recursive: true });  }});
Deno.test("emptyDirIfItExist", async function () {  const testDir = path.join(testdataDir, "empty_dir_test_3");  const testNestDir = path.join(testDir, "nest");  // create test dir  await emptyDir(testNestDir);  const testDirFile = path.join(testNestDir, "test.ts");  // create test file in test dir  await Deno.writeFile(testDirFile, new Uint8Array());
  // before empty: make sure file/directory exist  const beforeFileStat = await Deno.stat(testDirFile);  assertEquals(beforeFileStat.isFile, true);
  const beforeDirStat = await Deno.stat(testNestDir);  assertEquals(beforeDirStat.isDirectory, true);
  await emptyDir(testDir);
  // after empty: file/directory have already been removed  try {    // test dir still there    const stat = await Deno.stat(testDir);    assertEquals(stat.isDirectory, true);
    // nest directory have been removed    await assertRejects(      async () => {        await Deno.stat(testNestDir);      },    );
    // test file have been removed    await assertRejects(      async () => {        await Deno.stat(testDirFile);      },    );  } finally {    // remote test dir    await Deno.remove(testDir, { recursive: true });  }});
Deno.test("emptyDirSyncIfItExist", function () {  const testDir = path.join(testdataDir, "empty_dir_test_4");  const testNestDir = path.join(testDir, "nest");  // create test dir  emptyDirSync(testNestDir);  const testDirFile = path.join(testNestDir, "test.ts");  // create test file in test dir  Deno.writeFileSync(testDirFile, new Uint8Array());
  // before empty: make sure file/directory exist  const beforeFileStat = Deno.statSync(testDirFile);  assertEquals(beforeFileStat.isFile, true);
  const beforeDirStat = Deno.statSync(testNestDir);  assertEquals(beforeDirStat.isDirectory, true);
  emptyDirSync(testDir);
  // after empty: file/directory have already remove  try {    // test dir still present    const stat = Deno.statSync(testDir);    assertEquals(stat.isDirectory, true);
    // nest directory have been removed    assertThrows(() => {      Deno.statSync(testNestDir);    });
    // test file have been removed    assertThrows(() => {      Deno.statSync(testDirFile);    });  } finally {    // remote test dir    Deno.removeSync(testDir, { recursive: true });  }});
interface Scenes {  read: boolean; // --allow-read  write: boolean; // --allow-write  async: boolean;  output: string;}const scenes: Scenes[] = [  // 1  {    read: false,    write: false,    async: true,    output: "run again with the --allow-read flag",  },  {    read: false,    write: false,    async: false,    output: "run again with the --allow-read flag",  },  // 2  {    read: true,    write: false,    async: true,    output: "run again with the --allow-write flag",  },  {    read: true,    write: false,    async: false,    output: "run again with the --allow-write flag",  },  // 3  {    read: false,    write: true,    async: true,    output: "run again with the --allow-read flag",  },  {    read: false,    write: true,    async: false,    output: "run again with the --allow-read flag",  },  // 4  {    read: true,    write: true,    async: true,    output: "success",  },  {    read: true,    write: true,    async: false,    output: "success",  },];for (const s of scenes) {  let title = `test ${s.async ? "emptyDir" : "emptyDirSync"}`;  title += `("testdata/testfolder") ${s.read ? "with" : "without"}`;  title += ` --allow-read & ${s.write ? "with" : "without"} --allow-write`;  Deno.test(`[fs] emptyDirPermission ${title}`, async function (): Promise<    void  > {    const testfolder = path.join(testdataDir, "testfolder");
    try {      await Deno.mkdir(testfolder);
      await Deno.writeFile(        path.join(testfolder, "child.txt"),        new TextEncoder().encode("hello world"),      );
      try {        const args = ["run", "--quiet", "--no-prompt"];
        if (s.read) {          args.push("--allow-read");        }
        if (s.write) {          args.push("--allow-write");        }
        args.push(          path.join(            testdataDir,            s.async ? "empty_dir.ts" : "empty_dir_sync.ts",          ),        );        args.push("testfolder");
        const command = new Deno.Command(Deno.execPath(), {          cwd: testdataDir,          args,        });        const { stdout } = await command.output();        assertStringIncludes(new TextDecoder().decode(stdout), s.output);      } catch (err) {        await Deno.remove(testfolder, { recursive: true });        throw err;      }    } finally {      // Make the test rerunnable      // Otherwise it would throw an error due to mkdir fail.      await Deno.remove(testfolder, { recursive: true });      // done    }  });}