Support directories other than "web" in pub build.

sdk/lib/_internal/pub/test/transformer/dart2js/supports_configuration_with_build_test.dart

 // 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 'dart:convert';
 
-import 'package:path/path.dart' as path;
 import 'package:scheduled_test/scheduled_test.dart';
 
-import '../descriptor.dart' as d;
-import '../test_pub.dart';
+import '../../descriptor.dart' as d;
+import '../../test_pub.dart';
 
 main() {
   initConfig();
 
-  integration("compiles dart.js and interop.js next to entrypoints", () {
+  integration("compiles dart.js and interop.js next to entrypoints when "
+              "dartjs is explicitly configured", () {
     // Dart2js can take a long time to compile dart code, so we increase the
     // timeout to cope with that.
     currentSchedule.timeout *= 3;
 
     serve([
       d.dir('api', [
         d.dir('packages', [
           d.file('browser', JSON.encode({
             'versions': [packageVersionApiMap(packageMap('browser', '1.0.0'))]
           })),
@@ skipping 16 matching lines @@
                 d.file('dart.js', 'contents of dart.js'),
                 d.file('interop.js', 'contents of interop.js')
               ])
             ])
           ])
         ])
       ])
     ]);
 
     d.dir(appPath, [
-      d.appPubspec({"browser": "1.0.0"}),
+      d.pubspec({
+        "name": "myapp",
+        "dependencies": {
+          "browser": "1.0.0"
+        },
+        "transformers": [{
+          "\$dart2js": {
+            "minify": true
+          }
+        }]
+      }),
       d.dir('web', [
         d.file('file.dart', 'void main() => print("hello");'),
-        d.dir('subdir', [
-          d.file('subfile.dart', 'void main() => print("subhello");')
-        ])
       ])
     ]).create();
 
     pubGet();
 
     schedulePub(args: ["build"],
-        output: new RegExp(r"Built 12 files!"),
+        output: new RegExp(r"Built 5 files!"),
         exitCode: 0);
 
     d.dir(appPath, [
       d.dir('build', [
-        d.matcherFile('file.dart.js', isNot(isEmpty)),
-        d.matcherFile('file.dart.precompiled.js', isNot(isEmpty)),
-        d.matcherFile('file.dart.js.map', isNot(isEmpty)),
-        d.dir('packages', [d.dir('browser', [
-          d.file('dart.js', 'contents of dart.js'),
-          d.file('interop.js', 'contents of interop.js')
-        ])]),
-        d.dir('subdir', [
-          d.dir('packages', [d.dir('browser', [
-            d.file('dart.js', 'contents of dart.js'),
-            d.file('interop.js', 'contents of interop.js')
-          ])]),
-          d.matcherFile('subfile.dart.js', isNot(isEmpty)),
-          d.matcherFile('subfile.dart.precompiled.js', isNot(isEmpty)),
-          d.matcherFile('subfile.dart.js.map', isNot(isEmpty))
+        d.dir('web', [
+          d.matcherFile('file.dart.js', isMinifiedDart2JSOutput),
+          d.matcherFile('file.dart.precompiled.js', isNot(isEmpty)),
+          d.matcherFile('file.dart.js.map', isNot(isEmpty)),
+          d.dir('packages', [
+            d.dir('browser', [
+              d.file('dart.js', 'contents of dart.js'),
+              d.file('interop.js', 'contents of interop.js')
+            ])
+          ]),
         ])
       ])
     ]).validate();
   });
 }