Add File.readAsBytesSync/writeAsBytesSync() methods.

pkg/analyzer/test/file_system/memory_file_system_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.memory_file_system_test;
 
 import 'dart:async';
 import 'dart:core' hide Resource;
 
 import 'package:analyzer/file_system/file_system.dart';
@@ skipping 105 matching lines @@
   }
 
   void test_parent() {
     provider.newFile('/foo/bar/file.txt', 'content');
     File file = provider.getResource('/foo/bar/file.txt');
     Resource parent = file.parent;
     expect(parent, new isInstanceOf<Folder>());
     expect(parent.path, equals('/foo/bar'));
   }
 
+  void test_readAsBytesSync_doesNotExist() {
+    File file = provider.getResource('/test.bin');
+    expect(() {
+      file.readAsBytesSync();
+    }, throwsA(_isFileSystemException));
+  }
+
+  void test_readAsBytesSync_exists() {
+    List<int> bytes = <int>[1, 2, 3, 4, 5];
+    File file = provider.newFileWithBytes('/file.bin', bytes);
+    expect(file.readAsBytesSync(), bytes);
+  }
+
   void test_readAsStringSync_doesNotExist() {
     File file = provider.getResource('/test.txt');
     expect(() {
       file.readAsStringSync();
     }, throwsA(_isFileSystemException));
   }
 
   void test_readAsStringSync_exists() {
     File file = provider.newFile('/file.txt', 'abc');
     expect(file.readAsStringSync(), 'abc');
   }
 
   void test_shortName() {
     File file = provider.getResource('/foo/bar/file.txt');
     expect(file.shortName, 'file.txt');
   }
 
   void test_toString() {
     File file = provider.getResource('/foo/bar/file.txt');
     expect(file.toString(), '/foo/bar/file.txt');
   }
+
+  void test_writeAsBytesSync() {
+    File file = provider.newFileWithBytes('/file.bin', <int>[1, 2]);
+    expect(file.readAsBytesSync(), <int>[1, 2]);
+    // write new bytes
+    file.writeAsBytesSync(<int>[10, 20]);
+    expect(file.readAsBytesSync(), <int>[10, 20]);
+  }
 }
 
 @reflectiveTest
 class FolderTest {
   static const String path = '/foo/bar';
 
   MemoryResourceProvider provider = new MemoryResourceProvider();
   Folder folder;
 
   void setUp() {
@@ skipping 303 matching lines @@
     String path = '/my/file';
     provider.newFile(path, 'contents 1');
     Resource file = provider.getResource(path);
     expect(file, new isInstanceOf<File>());
     Source source = (file as File).createSource();
     expect(source.contents.data, equals('contents 1'));
     provider.modifyFile(path, 'contents 2');
     expect(source.contents.data, equals('contents 2'));
   }
 
+  void test_newFileWithBytes() {
+    String path = '/my/file';
+    List<int> bytes = <int>[1, 2, 3, 4, 5];
+    provider.newFileWithBytes(path, bytes);
+    File file = provider.getResource(path);
+    expect(file, isNotNull);
+    expect(file.exists, isTrue);
+    expect(file.readAsBytesSync(), bytes);
+  }
+
   void test_newFolder_aleadyExists_asFile() {
     provider.newFile('/my/file', 'qwerty');
     expect(() {
       provider.newFolder('/my/file');
     }, throwsA(new isInstanceOf<ArgumentError>()));
   }
 
   void test_newFolder_aleadyExists_asFolder() {
     Folder folder = provider.newFolder('/my/folder');
     Folder newFolder = provider.newFolder('/my/folder');
@@ skipping 81 matching lines @@
     return new Future.delayed(Duration.ZERO, computation);
   }
 
   _watchingFolder(String path, test(List<WatchEvent> changesReceived)) {
     Folder folder = provider.getResource(path);
     var changesReceived = <WatchEvent>[];
     folder.changes.listen(changesReceived.add);
     return test(changesReceived);
   }
 }