text: // Copyright Joyent, Inc. and other Node contributors.
  //
  // Permission is hereby granted, free of charge, to any person obtaining a
  // copy of this software and associated documentation files (the
  // "Software"), to deal in the Software without restriction, including
  // without limitation the rights to use, copy, modify, merge, publish,
  // distribute, sublicense, and/or sell copies of the Software, and to permit
  // persons to whom the Software is furnished to do so, subject to the
  // following conditions:
  //
  // The above copyright notice and this permission notice shall be included
  // in all copies or substantial portions of the Software.
  //
  // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  // OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
  // NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
  // DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  // OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  // USE OR OTHER DEALINGS IN THE SOFTWARE.
  
  'use strict';
  const common = require('../common');
  const assert = require('assert');
  const fs = require('fs');
  
  const tmpdir = require('../common/tmpdir');
  tmpdir.refresh();
  
  {
    const pathname = `${tmpdir.path}/test1`;
  
    fs.mkdir(pathname, common.mustCall(function(err) {
      assert.strictEqual(err, null);
      assert.strictEqual(common.fileExists(pathname), true);
    }));
  }
  
  {
    const pathname = `${tmpdir.path}/test2`;
  
    fs.mkdir(pathname, 0o777, common.mustCall(function(err) {
      assert.strictEqual(err, null);
      assert.strictEqual(common.fileExists(pathname), true);
    }));
  }
  
  {
    const pathname = `${tmpdir.path}/test3`;
  
    fs.mkdirSync(pathname);
  
    const exists = common.fileExists(pathname);
    assert.strictEqual(exists, true);
  }
  
  [false, 1, {}, [], null, undefined].forEach((i) => {
    common.expectsError(
      () => fs.mkdir(i, common.mustNotCall()),
      {
        code: 'ERR_INVALID_ARG_TYPE',
        type: TypeError
      }
    );
    common.expectsError(
      () => fs.mkdirSync(i),
      {
        code: 'ERR_INVALID_ARG_TYPE',
        type: TypeError
      }
    );
  });
  
  // Keep the event loop alive so the async mkdir() requests
  // have a chance to run (since they don't ref the event loop).
  process.nextTick(() => {});
  