Handle parts as input in resolver.

tests/compiler/dart2js/analyze_test_test.dart

 // Copyright (c) 2016, 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.
 
 library dart2js.analyze_test.test;
 
 import 'dart:io';
 
 import 'package:async_helper/async_helper.dart';
 import 'package:compiler/src/apiimpl.dart' show
@@ skipping 26 matching lines @@
   "/data/",
   "quarantined/http_launch_data/",
   "mirrors_helper.dart",
   "path%20with%20spaces/",
   // Broken tests:
   "quarantined/http_test.dart",
   // Package directory
   "packages/",
 ];
 
+List<Uri> computeInputUris({String filter}) {
+  List<Uri> uriList = <Uri>[];
+  Directory dir =
+      new Directory.fromUri(Uri.base.resolve('tests/compiler/dart2js/'));
+  for (FileSystemEntity entity in dir.listSync(recursive: true)) {
+    if (entity is File && entity.path.endsWith('.dart')) {
+      Uri file = Uri.base.resolve(nativeToUriPath(entity.path));
+      if (filter != null && !'$file'.contains(filter)) {
+        continue;
+      }
+      if (!SKIP_LIST.any((skip) => file.path.contains(skip))) {
+        uriList.add(file);
+      }
+    }
+  }
+  return uriList;
+}
+
 main(List<String> arguments) {
   List<String> options = <String>[];
   List<Uri> uriList = <Uri>[];
   String filter;
   bool first = true;
   for (String argument in arguments) {
     if (argument.startsWith('-')) {
       options.add(argument == '-v' ? Flags.verbose : argument);
     } else if (first) {
       File file = new File(argument);
@@ skipping 14 matching lines @@
         filter = argument;
       }
     } else {
       throw new ArgumentError("Extra argument $argument in $arguments.");
     }
     first = false;
   }
 
   asyncTest(() async {
     if (uriList.isEmpty) {
-      Directory dir =
-          new Directory.fromUri(Uri.base.resolve('tests/compiler/dart2js/'));
-      for (FileSystemEntity entity in dir.listSync(recursive: true)) {
-        if (entity is File && entity.path.endsWith('.dart')) {
-          Uri file = Uri.base.resolve(nativeToUriPath(entity.path));
-          if (filter != null && !'$file'.contains(filter)) {
-            continue;
-          }
-          if (!SKIP_LIST.any((skip) => file.path.contains(skip))) {
-            uriList.add(file);
-          }
-        }
-      }
+      uriList = computeInputUris(filter: filter);
     }
     await analyze(
         uriList,
         WHITE_LIST,
         mode: AnalysisMode.URI,
         options: options);
   });
 }