Clean up tests that are duplicated between install and update.

sdk/lib/_internal/pub/test/install/unknown_source_test.dart

-// Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS d.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 d.file.
-
-library pub_tests;
-
-import 'dart:io';
-import 'dart:json' as json;
-
-import '../descriptor.dart' as d;
-import '../test_pub.dart';
-
-main() {
-  initConfig();
-  integration('fails gracefully on a dependency from an unknown source', () {
-    d.appDir([{"bad": "foo"}]).create();
-
-    schedulePub(args: ['install'],
-        error: new RegExp("Package 'myapp' depends on 'foo' from unknown "
-                          "source 'bad'.\$"),
-        exitCode: 1);
-  });
-
-  integration('fails gracefully on transitive dependency from an unknown '
-              'source', () {
-    d.dir('foo', [
-      d.libDir('foo', 'foo 0.0.1'),
-      d.libPubspec('foo', '0.0.1', deps: [{"bad": "bar"}])
-    ]).create();
-
-    d.appDir([{"path": "../foo"}]).create();
-
-    schedulePub(args: ['install'],
-        error: new RegExp("Package 'foo' depends on 'bar' from unknown "
-                          "source 'bad'.\$"),
-        exitCode: 1);
-  });
-
-  integration('ignores unknown source in lockfile', () {
-    d.dir('foo', [
-      d.libDir('foo'),
-      d.libPubspec('foo', '0.0.1')
-    ]).create();
-
-    // Depend on "foo" from a valid source.
-    d.dir(appPath, [
-      d.pubspec({
-        "name": "myapp",
-        "dependencies": {
-          "foo": {"path": "../foo"}
-        }
-      })
-    ]).create();
-
-    // But lock it to a bad one.
-    d.dir(appPath, [
-      d.file("pubspec.lock", json.stringify({
-        'packages': {
-          'foo': {
-            'version': '0.0.0',
-            'source': 'bad',
-            'description': {
-              'name': 'foo'
-            }
-          }
-        }
-      }))
-    ]).create();
-
-    schedulePub(args: ['install'],
-        output: new RegExp(r"Dependencies installed!$"));
-
-    // Should update to the new one.
-    d.dir(packagesPath, [
-      d.dir("foo", [
-        d.file("foo.dart", 'main() => "foo";')
-      ])
-    ]).validate();
-  });
-}