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// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.// TODO(axetroy): Add test for Windows once symlink is implemented for Windows.import {  assertEquals,  assertRejects,  assertThrows,} from "../testing/asserts.ts";import * as path from "../path/mod.ts";import { ensureLink, ensureLinkSync } from "./ensure_link.ts";
const moduleDir = path.dirname(path.fromFileUrl(import.meta.url));const testdataDir = path.resolve(moduleDir, "testdata");
Deno.test("ensureLinkIfItNotExist", async function () {  const srcDir = path.join(testdataDir, "ensure_link_1");  const destDir = path.join(testdataDir, "ensure_link_1_2");  const testFile = path.join(srcDir, "test.txt");  const linkFile = path.join(destDir, "link.txt");
  await assertRejects(    async () => {      await ensureLink(testFile, linkFile);    },  );
  await Deno.remove(destDir, { recursive: true });});
Deno.test("ensureLinkSyncIfItNotExist", function () {  const testDir = path.join(testdataDir, "ensure_link_2");  const testFile = path.join(testDir, "test.txt");  const linkFile = path.join(testDir, "link.txt");
  assertThrows(() => {    ensureLinkSync(testFile, linkFile);  });
  Deno.removeSync(testDir, { recursive: true });});
Deno.test("ensureLinkIfItExist", async function () {  const testDir = path.join(testdataDir, "ensure_link_3");  const testFile = path.join(testDir, "test.txt");  const linkFile = path.join(testDir, "link.txt");
  await Deno.mkdir(testDir, { recursive: true });  await Deno.writeFile(testFile, new Uint8Array());
  await ensureLink(testFile, linkFile);
  const srcStat = await Deno.lstat(testFile);  const linkStat = await Deno.lstat(linkFile);
  assertEquals(srcStat.isFile, true);  assertEquals(linkStat.isFile, true);
  // har link success. try to change one of them. they should be change both.
  // let's change origin file.  await Deno.writeFile(testFile, new TextEncoder().encode("123"));
  const testFileContent1 = new TextDecoder().decode(    await Deno.readFile(testFile),  );  const linkFileContent1 = new TextDecoder().decode(    await Deno.readFile(testFile),  );
  assertEquals(testFileContent1, "123");  assertEquals(testFileContent1, linkFileContent1);
  // let's change link file.  await Deno.writeFile(testFile, new TextEncoder().encode("abc"));
  const testFileContent2 = new TextDecoder().decode(    await Deno.readFile(testFile),  );  const linkFileContent2 = new TextDecoder().decode(    await Deno.readFile(testFile),  );
  assertEquals(testFileContent2, "abc");  assertEquals(testFileContent2, linkFileContent2);
  await Deno.remove(testDir, { recursive: true });});
Deno.test("ensureLinkSyncIfItExist", function () {  const testDir = path.join(testdataDir, "ensure_link_4");  const testFile = path.join(testDir, "test.txt");  const linkFile = path.join(testDir, "link.txt");
  Deno.mkdirSync(testDir, { recursive: true });  Deno.writeFileSync(testFile, new Uint8Array());
  ensureLinkSync(testFile, linkFile);
  const srcStat = Deno.lstatSync(testFile);
  const linkStat = Deno.lstatSync(linkFile);
  assertEquals(srcStat.isFile, true);  assertEquals(linkStat.isFile, true);
  // har link success. try to change one of them. they should be change both.
  // let's change origin file.  Deno.writeFileSync(testFile, new TextEncoder().encode("123"));
  const testFileContent1 = new TextDecoder().decode(    Deno.readFileSync(testFile),  );  const linkFileContent1 = new TextDecoder().decode(    Deno.readFileSync(testFile),  );
  assertEquals(testFileContent1, "123");  assertEquals(testFileContent1, linkFileContent1);
  // let's change link file.  Deno.writeFileSync(testFile, new TextEncoder().encode("abc"));
  const testFileContent2 = new TextDecoder().decode(    Deno.readFileSync(testFile),  );  const linkFileContent2 = new TextDecoder().decode(    Deno.readFileSync(testFile),  );
  assertEquals(testFileContent2, "abc");  assertEquals(testFileContent2, linkFileContent2);
  Deno.removeSync(testDir, { recursive: true });});
Deno.test("ensureLinkDirectoryIfItExist", async function () {  const testDir = path.join(testdataDir, "ensure_link_origin_3");  const linkDir = path.join(testdataDir, "ensure_link_link_3");  const testFile = path.join(testDir, "test.txt");
  await Deno.mkdir(testDir, { recursive: true });  await Deno.writeFile(testFile, new Uint8Array());
  await assertRejects(    async () => {      await ensureLink(testDir, linkDir);    },    // "Operation not permitted (os error 1)" // throw an local matching test    // "Access is denied. (os error 5)" // throw in CI  );
  Deno.removeSync(testDir, { recursive: true });});
Deno.test("ensureLinkSyncDirectoryIfItExist", function () {  const testDir = path.join(testdataDir, "ensure_link_origin_3");  const linkDir = path.join(testdataDir, "ensure_link_link_3");  const testFile = path.join(testDir, "test.txt");
  Deno.mkdirSync(testDir, { recursive: true });  Deno.writeFileSync(testFile, new Uint8Array());
  assertThrows(    () => {      ensureLinkSync(testDir, linkDir);    },    // "Operation not permitted (os error 1)" // throw an local matching test    // "Access is denied. (os error 5)" // throw in CI  );
  Deno.removeSync(testDir, { recursive: true });});