Support serving from multiple directories using "pub serve".

sdk/lib/_internal/pub/test/serve/roots/serves_web_and_test_dirs_by_default_test.dart

Index: sdk/lib/_internal/pub/test/serve/roots/serves_web_and_test_dirs_by_default_test.dart
diff --git a/sdk/lib/_internal/pub/test/transformer/dart2js/ignores_entrypoint_outside_web_test.dart b/sdk/lib/_internal/pub/test/serve/roots/serves_web_and_test_dirs_by_default_test.dart
similarity index 50%
copy from sdk/lib/_internal/pub/test/transformer/dart2js/ignores_entrypoint_outside_web_test.dart
copy to sdk/lib/_internal/pub/test/serve/roots/serves_web_and_test_dirs_by_default_test.dart
index 1ad02a397926146463e155348caf05038c1645bd..b95e0ffd5b07fa4ca8c38da012179788fb8d1ec9 100644
--- a/sdk/lib/_internal/pub/test/transformer/dart2js/ignores_entrypoint_outside_web_test.dart
+++ b/sdk/lib/_internal/pub/test/serve/roots/serves_web_and_test_dirs_by_default_test.dart
@@ -1,4 +1,4 @@
-// Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS d.file
+// Copyright (c) 2014, 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 file.
 
@@ -6,20 +6,20 @@ library pub_tests;
 
 import '../../descriptor.dart' as d;
 import '../../test_pub.dart';
-import '../../serve/utils.dart';
+import '../utils.dart';
 
 main() {
   initConfig();
-  integration("ignores a Dart entrypoint outside web", () {
+  integration("serves web/ and test/ dirs by default", () {
     d.dir(appPath, [
       d.appPubspec(),
-      d.dir("lib", [
-        d.file("main.dart", "void main() => print('hello');")
-      ])
+      d.dir("web", [d.file("foo", "contents")]),
+      d.dir("test", [d.file("bar", "contents")])
     ]).create();
 
     pubServe();
-    requestShould404("packages/myapp/main.dart.js");
+    requestShouldSucceed("foo", "contents", root: "web");
+    requestShouldSucceed("bar", "contents", root: "test");

[Bob Nystrom, 2014/02/19 00:36:52]

Test that it 404s on something in example.

[nweiz, 2014/02/19 01:25:58]

Done.

     endPubServe();
   });
 }