Create a public API for contributing fixes and make fixes pluggable

pkg/analysis_server/test/edit/format_test.dart

 // Copyright (c) 2015, 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 test.edit.format;
 
 import 'dart:async';
 
 import 'package:analysis_server/src/edit/edit_domain.dart';
+import 'package:analysis_server/src/plugin/server_plugin.dart';
 import 'package:analysis_server/src/protocol.dart';
+import 'package:analyzer/src/plugin/plugin_impl.dart';
 import 'package:unittest/unittest.dart' hide ERROR;
 
 import '../analysis_abstract.dart';
 import '../reflective_tests.dart';
 
 main() {
   groupSep = ' | ';
   runReflectiveTests(FormatTest);
 }
 
 @reflectiveTest
 class FormatTest extends AbstractAnalysisTest {
   @override
   void setUp() {
     super.setUp();
     createProject();
-    handler = new EditDomainHandler(server);
+    ExtensionManager manager = new ExtensionManager();
+    ServerPlugin plugin = new ServerPlugin();
+    manager.processPlugins([plugin]);
+    handler = new EditDomainHandler(server, plugin);
+  }
+
+  Future test_formatNoOp() {
+    // Already formatted source
+    addTestFile('''
+main() {
+  int x = 3;
+}
+''');
+    return waitForTasksFinished().then((_) {
+      EditFormatResult formatResult = _formatAt(0, 3);
+      expect(formatResult.edits, isNotNull);
+      expect(formatResult.edits, hasLength(0));
+    });
   }
 
   Future test_formatSimple() {
     addTestFile('''
 main() { int x = 3; }
 ''');
     return waitForTasksFinished().then((_) {
       EditFormatResult formatResult = _formatAt(0, 3);
 
       expect(formatResult.edits, isNotNull);
       expect(formatResult.edits, hasLength(1));
 
       SourceEdit edit = formatResult.edits[0];
       expect(edit.replacement, equals('''
 main() {
   int x = 3;
 }
 '''));
       expect(formatResult.selectionOffset, equals(0));
       expect(formatResult.selectionLength, equals(3));
     });
   }
 
-  Future test_formatNoOp() {
-    // Already formatted source
-    addTestFile('''
-main() {
-  int x = 3;
-}
-''');
-    return waitForTasksFinished().then((_) {
-      EditFormatResult formatResult = _formatAt(0, 3);
-      expect(formatResult.edits, isNotNull);
-      expect(formatResult.edits, hasLength(0));
-    });
-  }
-
   EditFormatResult _formatAt(int selectionOffset, int selectionLength) {
     Request request = new EditFormatParams(
         testFile, selectionOffset, selectionLength).toRequest('0');
     Response response = handleSuccessfulRequest(request);
     return new EditFormatResult.fromResponse(response);
   }
 }