Clean up tests that are duplicated between install and update.

sdk/lib/_internal/pub/test/update/pub_update_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:scheduled_test/scheduled_test.dart';
-
-import '../descriptor.dart' as d;
-import '../test_pub.dart';
-
-main() {
-  initConfig();
-  group('requires', () {
-    integration('a pubspec', () {
-      d.dir(appPath, []).create();
-
-      schedulePub(args: ['update'],
-          error: new RegExp(r'^Could not find a file named "pubspec.yaml"'),
-          exitCode: 1);
-    });
-
-    integration('a pubspec with a "name" key', () {
-      d.dir(appPath, [
-        d.pubspec({"dependencies": {"foo": null}})
-      ]).create();
-
-      schedulePub(args: ['update'],
-          error: new RegExp(r'^pubspec.yaml is missing the required "name" '
-              r'field \(e\.g\. "name: myapp"\)\.'),
-          exitCode: 1);
-    });
-  });
-
-  integration('adds itself to the packages', () {
-    // The symlink should use the name in the pubspec, not the name of the
-    // directory.
-    d.dir(appPath, [
-      d.pubspec({"name": "myapp_name"}),
-      d.libDir('myapp_name')
-    ]).create();
-
-    schedulePub(args: ['update'],
-        output: new RegExp(r"Dependencies updated!$"));
-
-    d.dir(packagesPath, [
-      d.dir("myapp_name", [
-        d.file('myapp_name.dart', 'main() => "myapp_name";')
-      ])
-    ]).validate();
-  });
-
-  integration('does not adds itself to the packages if it has no "lib" '
-      'directory', () {
-    // The symlink should use the name in the pubspec, not the name of the
-    // directory.
-    d.dir(appPath, [
-      d.pubspec({"name": "myapp_name"}),
-    ]).create();
-
-    schedulePub(args: ['update'],
-        output: new RegExp(r"Dependencies updated!$"));
-
-    d.dir(packagesPath, [
-      d.nothing("myapp_name")
-    ]).validate();
-  });
-
-  integration('does not add a package if it does not have a "lib" '
-      'directory', () {
-    // Using a path source, but this should be true of all sources.
-    d.dir('foo', [
-      d.libPubspec('foo', '0.0.0-not.used')
-    ]).create();
-
-    d.dir(appPath, [
-      d.pubspec({"name": "myapp", "dependencies": {"foo": {"path": "../foo"}}})
-    ]).create();
-
-    schedulePub(args: ['update'],
-        output: new RegExp(r"Dependencies updated!$"));
-
-    d.packagesDir({"foo": null}).validate();
-  });
-}