Allow configuring build directory.

sdk/lib/_internal/pub/test/build/can_specify_output_directory_test.dart

Index: sdk/lib/_internal/pub/test/build/can_specify_output_directory_test.dart
diff --git a/sdk/lib/_internal/pub/test/build/ignores_entrypoints_in_lib_test.dart b/sdk/lib/_internal/pub/test/build/can_specify_output_directory_test.dart
similarity index 50%
copy from sdk/lib/_internal/pub/test/build/ignores_entrypoints_in_lib_test.dart
copy to sdk/lib/_internal/pub/test/build/can_specify_output_directory_test.dart
index cc543f427a12d4f11be676d824918955367e033b..5c793b301176b23c84622292b6ec4e453fd1c066 100644
--- a/sdk/lib/_internal/pub/test/build/ignores_entrypoints_in_lib_test.dart
+++ b/sdk/lib/_internal/pub/test/build/can_specify_output_directory_test.dart
@@ -1,32 +1,34 @@
-// Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS 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.
 
+library pub_tests;
+
+import 'package:path/path.dart' as path;
+
 import '../descriptor.dart' as d;
 import '../test_pub.dart';
 
 main() {
   initConfig();
-
-  integration("ignores entrypoint Dart files in lib/", () {
+  integration("can specify the output directory to build into", () {
     d.dir(appPath, [
       d.appPubspec(),
-      d.dir('lib', [
-        d.file('file.dart', 'void main() => print("hello");'),
-      ]),
       d.dir('web', [
-        d.file('index.html', 'html'),
+        d.file('file.txt', 'web')
       ])
     ]).create();
 
-    schedulePub(args: ["build", "--all"],
-        output: new RegExp(r'Built 1 file to "build".'));
+    var outDir = path.join("out", "dir");
+    schedulePub(args: ["build", "-o", outDir],
+        output: new RegExp('Built 1 file to "$outDir".'));
 
     d.dir(appPath, [
-      d.dir('build', [
-        d.nothing('lib'),
-        d.dir('web', [
-          d.file('index.html', 'html')
+      d.dir("out", [
+        d.dir("dir", [
+          d.dir("web", [
+            d.file("file.txt", "web")
+          ]),
         ])
       ])
     ]).validate();