Add a "pub deploy" command.

sdk/lib/_internal/pub/test/deploy/compiles_dart_entrypoints_to_dart_and_js.dart

Index: sdk/lib/_internal/pub/test/deploy/compiles_dart_entrypoints_to_dart_and_js.dart
diff --git a/sdk/lib/_internal/pub/test/deploy/compiles_dart_entrypoints_to_dart_and_js.dart b/sdk/lib/_internal/pub/test/deploy/compiles_dart_entrypoints_to_dart_and_js.dart
new file mode 100644
index 0000000000000000000000000000000000000000..46a95937d147718183b4a181d56ec5865fd85cc7
--- /dev/null
+++ b/sdk/lib/_internal/pub/test/deploy/compiles_dart_entrypoints_to_dart_and_js.dart
@@ -0,0 +1,46 @@
+// Copyright (c) 2013, 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.
+
+import 'package:scheduled_test/scheduled_test.dart';
+
+import '../descriptor.dart' as d;
+import '../test_pub.dart';
+
+main() {
+  initConfig();
+
+  integration("compiles Dart entrypoints to Dart and JS", () {
+    d.dir(appPath, [
+      d.appPubspec([]),
+      d.dir('web', [
+        d.file('file.dart', 'void main() => print("hello");'),
+        d.dir('subdir', [
+          d.file('subfile.dart', 'void main() => print("ping");')
+        ])
+      ])
+    ]).create();
+
+    schedulePub(args: ["deploy"],
+        output: '''
+Finding entrypoints...
+Copying   web/                    => deploy/
+Compiling web/file.dart           => deploy/file.dart.js
+Compiling web/file.dart           => deploy/file.dart
+Compiling web/subdir/subfile.dart => deploy/subdir/subfile.dart.js
+Compiling web/subdir/subfile.dart => deploy/subdir/subfile.dart
+''',
+        exitCode: 0);
+
+    d.dir(appPath, [
+      d.dir('deploy', [
+        d.matcherFile('file.dart.js', isNot(isEmpty)),
+        d.matcherFile('file.dart', isNot(isEmpty)),
+        d.dir('subdir', [
+          d.matcherFile('subfile.dart.js', isNot(isEmpty)),
+          d.matcherFile('subfile.dart', isNot(isEmpty))
+        ])
+      ])
+    ]).validate();
+  });
+}