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// deno-fmt-ignore-file// deno-lint-ignore-file
// Copyright Joyent and Node contributors. All rights reserved. MIT license.// Taken from Node 18.12.0// This file is automatically generated by "node/_tools/setup.ts". Do not modify this file manually
'use strict';require('../common');const assert = require('assert');const path = require('path');
const failures = [];const slashRE = /\//g;
[  [__filename, '.js'],  ['', ''],  ['/path/to/file', ''],  ['/path/to/file.ext', '.ext'],  ['/path.to/file.ext', '.ext'],  ['/path.to/file', ''],  ['/path.to/.file', ''],  ['/path.to/.file.ext', '.ext'],  ['/path/to/f.ext', '.ext'],  ['/path/to/..ext', '.ext'],  ['/path/to/..', ''],  ['file', ''],  ['file.ext', '.ext'],  ['.file', ''],  ['.file.ext', '.ext'],  ['/file', ''],  ['/file.ext', '.ext'],  ['/.file', ''],  ['/.file.ext', '.ext'],  ['.path/file.ext', '.ext'],  ['file.ext.ext', '.ext'],  ['file.', '.'],  ['.', ''],  ['./', ''],  ['.file.ext', '.ext'],  ['.file', ''],  ['.file.', '.'],  ['.file..', '.'],  ['..', ''],  ['../', ''],  ['..file.ext', '.ext'],  ['..file', '.file'],  ['..file.', '.'],  ['..file..', '.'],  ['...', '.'],  ['...ext', '.ext'],  ['....', '.'],  ['file.ext/', '.ext'],  ['file.ext//', '.ext'],  ['file/', ''],  ['file//', ''],  ['file./', '.'],  ['file.//', '.'],].forEach((test) => {  const expected = test[1];  [path.posix.extname, path.win32.extname].forEach((extname) => {    let input = test[0];    let os;    if (extname === path.win32.extname) {      input = input.replace(slashRE, '\\');      os = 'win32';    } else {      os = 'posix';    }    const actual = extname(input);    const message = `path.${os}.extname(${JSON.stringify(input)})\n  expect=${      JSON.stringify(expected)}\n  actual=${JSON.stringify(actual)}`;    if (actual !== expected)      failures.push(`\n${message}`);  });  {    const input = `C:${test[0].replace(slashRE, '\\')}`;    const actual = path.win32.extname(input);    const message = `path.win32.extname(${JSON.stringify(input)})\n  expect=${      JSON.stringify(expected)}\n  actual=${JSON.stringify(actual)}`;    if (actual !== expected)      failures.push(`\n${message}`);  }});assert.strictEqual(failures.length, 0, failures.join(''));
// On Windows, backslash is a path separator.assert.strictEqual(path.win32.extname('.\\'), '');assert.strictEqual(path.win32.extname('..\\'), '');assert.strictEqual(path.win32.extname('file.ext\\'), '.ext');assert.strictEqual(path.win32.extname('file.ext\\\\'), '.ext');assert.strictEqual(path.win32.extname('file\\'), '');assert.strictEqual(path.win32.extname('file\\\\'), '');assert.strictEqual(path.win32.extname('file.\\'), '.');assert.strictEqual(path.win32.extname('file.\\\\'), '.');
// On *nix, backslash is a valid name component like any other character.assert.strictEqual(path.posix.extname('.\\'), '');assert.strictEqual(path.posix.extname('..\\'), '.\\');assert.strictEqual(path.posix.extname('file.ext\\'), '.ext\\');assert.strictEqual(path.posix.extname('file.ext\\\\'), '.ext\\\\');assert.strictEqual(path.posix.extname('file\\'), '');assert.strictEqual(path.posix.extname('file\\\\'), '');assert.strictEqual(path.posix.extname('file.\\'), '.\\');assert.strictEqual(path.posix.extname('file.\\\\'), '.\\\\');