Add a toUri method to Resource

pkg/analyzer/test/file_system/physical_resource_provider_test.dart

 // Copyright (c) 2014, 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 analyzer.test.file_system.physical_resource_provider_test;
 
 import 'dart:async';
 import 'dart:core' hide Resource;
 import 'dart:io' as io;
 
@@ skipping 162 matching lines @@
     new io.File(oldPath).writeAsStringSync('text');
     new io.Directory(newPath).createSync();
     File file = PhysicalResourceProvider.INSTANCE.getResource(oldPath);
     expect(() {
       file.renameSync(newPath);
     }, throwsA(_isFileSystemException));
     expect(file.path, oldPath);
     expect(file.exists, isTrue);
   }
 
+  void test_toUri() {
+    String path = '/foo/file.txt';
+    File file = PhysicalResourceProvider.INSTANCE.getFile(path);
+    expect(file.toUri(), new Uri.file(path));
+  }
+
   void test_shortName() {
     expect(file.shortName, 'file.txt');
   }
 
   void test_toString() {
     expect(file.toString(), path);
   }
 
   void test_writeAsBytesSync() {
     new io.File(path).writeAsBytesSync(<int>[1, 2]);
@@ skipping 173 matching lines @@
     while (true) {
       Resource grandParent = parent.parent;
       if (grandParent == null) {
         break;
       }
       expect(grandParent, new isInstanceOf<Folder>());
       expect(grandParent.path.length, lessThan(parent.path.length));
       parent = grandParent;
     }
   }
+
+  void test_toUri() {
+    String path = '/foo/directory';
+    Folder folder = PhysicalResourceProvider.INSTANCE.getFolder(path);
+    expect(folder.toUri(), new Uri.directory(path));
+  }
 }
 
 @reflectiveTest
 class PhysicalResourceProviderTest extends _BaseTest {
   test_getModificationTimes() async {
     PhysicalResourceProvider provider = PhysicalResourceProvider.INSTANCE;
     String path = join(tempPath, 'file1.txt');
     new io.File(path).writeAsStringSync('');
     Source source = provider.getFile(path).createSource();
     List<int> times = await provider.getModificationTimes([source]);
@@ skipping 167 matching lines @@
 
   setUp() {
     tempDirectory = io.Directory.systemTemp.createTempSync('test_resource');
     tempPath = tempDirectory.absolute.path;
   }
 
   tearDown() {
     tempDirectory.deleteSync(recursive: true);
   }
 }