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// Copyright 2018-2024 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 "../assert/mod.ts";import * as path from "../path/mod.ts";import { ensureSymlink, ensureSymlinkSync } from "./ensure_symlink.ts";
const moduleDir = path.dirname(path.fromFileUrl(import.meta.url));const testdataDir = path.resolve(moduleDir, "testdata");
Deno.test("ensureSymlink() rejects if file does not exist", async function () {  const testDir = path.join(testdataDir, "link_file_1");  const testFile = path.join(testDir, "test.txt");
  await assertRejects(    async () => {      await ensureSymlink(testFile, path.join(testDir, "test1.txt"));    },  );
  await assertRejects(    async () => {      await Deno.stat(testFile).then(() => {        throw new Error("test file should exist.");      });    },  );});
Deno.test("ensureSymlinkSync() throws if file does not exist", function () {  const testDir = path.join(testdataDir, "link_file_2");  const testFile = path.join(testDir, "test.txt");
  assertThrows(() => {    ensureSymlinkSync(testFile, path.join(testDir, "test1.txt"));  });
  assertThrows(() => {    Deno.statSync(testFile);    throw new Error("test file should exist.");  });});
Deno.test("ensureSymlink() ensures linkName links to target", async function () {  const testDir = path.join(testdataDir, "link_file_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 ensureSymlink(testFile, linkFile);  await ensureSymlink(testFile, linkFile);
  const srcStat = await Deno.lstat(testFile);  const linkStat = await Deno.lstat(linkFile);
  assertEquals(srcStat.isFile, true);  assertEquals(linkStat.isSymlink, true);
  await Deno.remove(testDir, { recursive: true });});
Deno.test("ensureSymlinkSync() ensures linkName links to target", function () {  const testDir = path.join(testdataDir, "link_file_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());
  ensureSymlinkSync(testFile, linkFile);  ensureSymlinkSync(testFile, linkFile);
  const srcStat = Deno.lstatSync(testFile);  const linkStat = Deno.lstatSync(linkFile);
  assertEquals(srcStat.isFile, true);  assertEquals(linkStat.isSymlink, true);
  Deno.removeSync(testDir, { recursive: true });});
Deno.test("ensureSymlink() rejects if the linkName path already exist", async function () {  const testDir = path.join(testdataDir, "link_file_5");  const linkFile = path.join(testDir, "test.txt");  const linkDir = path.join(testDir, "test_dir");  const linkSymlink = path.join(testDir, "test_symlink");  const targetFile = path.join(testDir, "target.txt");
  await Deno.mkdir(testDir, { recursive: true });  await Deno.writeTextFile(linkFile, "linkFile");  await Deno.mkdir(linkDir);  await Deno.symlink("non-existent", linkSymlink, { type: "file" });  await Deno.writeTextFile(targetFile, "targetFile");
  await assertRejects(    async () => {      await ensureSymlink(targetFile, linkFile);    },  );  await assertRejects(    async () => {      await ensureSymlink(targetFile, linkDir);    },  );  await assertRejects(    async () => {      await ensureSymlink(targetFile, linkSymlink);    },  );
  assertEquals(await Deno.readTextFile(linkFile), "linkFile");  assertEquals((await Deno.stat(linkDir)).isDirectory, true);  assertEquals(await Deno.readLink(linkSymlink), "non-existent");  assertEquals(await Deno.readTextFile(targetFile), "targetFile");
  await Deno.remove(testDir, { recursive: true });});
Deno.test("ensureSymlinkSync() throws if the linkName path already exist", function () {  const testDir = path.join(testdataDir, "link_file_6");  const linkFile = path.join(testDir, "test.txt");  const linkDir = path.join(testDir, "test_dir");  const linkSymlink = path.join(testDir, "test_symlink");  const targetFile = path.join(testDir, "target.txt");
  Deno.mkdirSync(testDir, { recursive: true });  Deno.writeTextFileSync(linkFile, "linkFile");  Deno.mkdirSync(linkDir);  Deno.symlinkSync("non-existent", linkSymlink, { type: "file" });  Deno.writeTextFileSync(targetFile, "targetFile");
  assertThrows(() => {    ensureSymlinkSync(targetFile, linkFile);  });  assertThrows(() => {    ensureSymlinkSync(targetFile, linkDir);  });  assertThrows(() => {    ensureSymlinkSync(targetFile, linkSymlink);  });
  assertEquals(Deno.readTextFileSync(linkFile), "linkFile");  assertEquals(Deno.statSync(linkDir).isDirectory, true);  assertEquals(Deno.readLinkSync(linkSymlink), "non-existent");  assertEquals(Deno.readTextFileSync(targetFile), "targetFile");
  Deno.removeSync(testDir, { recursive: true });});
Deno.test("ensureSymlink() ensures dir linkName links to dir target", async function () {  const testDir = path.join(testdataDir, "link_file_origin_3");  const linkDir = path.join(testdataDir, "link_file_link_3");  const testFile = path.join(testDir, "test.txt");
  await Deno.mkdir(testDir, { recursive: true });  await Deno.writeFile(testFile, new Uint8Array());
  await ensureSymlink(testDir, linkDir);  await ensureSymlink(testDir, linkDir);
  const testDirStat = await Deno.lstat(testDir);  const linkDirStat = await Deno.lstat(linkDir);  const testFileStat = await Deno.lstat(testFile);
  assertEquals(testFileStat.isFile, true);  assertEquals(testDirStat.isDirectory, true);  assertEquals(linkDirStat.isSymlink, true);
  await Deno.remove(linkDir, { recursive: true });  await Deno.remove(testDir, { recursive: true });});
Deno.test("ensureSymlinkSync() ensures dir linkName links to dir target", function () {  const testDir = path.join(testdataDir, "link_file_origin_3");  const linkDir = path.join(testdataDir, "link_file_link_3");  const testFile = path.join(testDir, "test.txt");
  Deno.mkdirSync(testDir, { recursive: true });  Deno.writeFileSync(testFile, new Uint8Array());
  ensureSymlinkSync(testDir, linkDir);  ensureSymlinkSync(testDir, linkDir);
  const testDirStat = Deno.lstatSync(testDir);  const linkDirStat = Deno.lstatSync(linkDir);  const testFileStat = Deno.lstatSync(testFile);
  assertEquals(testFileStat.isFile, true);  assertEquals(testDirStat.isDirectory, true);  assertEquals(linkDirStat.isSymlink, true);
  Deno.removeSync(linkDir, { recursive: true });  Deno.removeSync(testDir, { recursive: true });});
Deno.test("ensureSymlink() creates symlink with relative target", async function () {  const testDir = path.join(testdataDir, "symlink-relative");  const testLinkName = path.join(testDir, "link.txt");  const testFile = path.join(testDir, "target.txt");
  await Deno.mkdir(testDir);
  await Deno.writeFile(testFile, new Uint8Array());
  await ensureSymlink("target.txt", testLinkName);
  const testDirStat = await Deno.lstat(testDir);  const linkDirStat = await Deno.lstat(testLinkName);  const testFileStat = await Deno.lstat(testFile);
  assertEquals(testFileStat.isFile, true);  assertEquals(testDirStat.isDirectory, true);  assertEquals(linkDirStat.isSymlink, true);
  await Deno.remove(testDir, { recursive: true });});
Deno.test("ensureSymlinkSync() creates symlink with relative target", function () {  const testDir = path.join(testdataDir, "symlink-relative-sync");  const testLinkName = path.join(testDir, "link.txt");  const testFile = path.join(testDir, "target.txt");
  Deno.mkdirSync(testDir);
  Deno.writeFileSync(testFile, new Uint8Array());
  ensureSymlinkSync("target.txt", testLinkName);
  const testDirStat = Deno.lstatSync(testDir);  const linkDirStat = Deno.lstatSync(testLinkName);  const testFileStat = Deno.lstatSync(testFile);
  assertEquals(testFileStat.isFile, true);  assertEquals(testDirStat.isDirectory, true);  assertEquals(linkDirStat.isSymlink, true);
  Deno.removeSync(testDir, { recursive: true });});