Move pub into sdk/lib/_internal.

utils/tests/pub/real_version_test.dart

-// Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
-// for details. All rights reserved. Use of this source code is governed by a
-// BSD-style license that can be found in the LICENSE file.
-
-library pub_tests;
-
-import 'dart:io';
-
-import 'package:pathos/path.dart' as path;
-import 'package:unittest/unittest.dart';
-import 'test_pub.dart';
-
-main() {
-  initConfig();
-
-  // This test is a bit funny.
-  //
-  // Pub parses the "version" file that gets generated and shipped with the SDK.
-  // Most of the pub tests here generate a synthetic SDK directory so that we
-  // can tests against a known SDK state. But we want to make sure that the
-  // actual version file that gets created is also one pub can parse. If this
-  // test fails, it means the version file's format has changed in a way pub
-  // didn't expect.
-  //
-  // Note that this test expects to be invoked from a Dart executable that is
-  // in the built SDK's "bin" directory. Note also that this invokes pub from
-  // the built SDK directory, and not the live pub code directly in the repo.
-  test('parse the real SDK "version" file', () {
-    // Get the path to the pub binary in the SDK.
-    var dartPath = new Options().executable;
-    var pubPath = path.join(path.dirname(dartPath), "pub");
-    if (Platform.operatingSystem == "windows") pubPath = '$pubPath.bat';
-
-    Process.run(pubPath, ['version']).then(expectAsync1((result) {
-      expect(result.stdout, startsWith("Pub"));
-      expect(result.exitCode, equals(0));
-    }));
-  });
-}