Test for 'edit.getAssists'.

pkg/analysis_server/lib/src/edit/edit_domain.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 edit.domain;
 
 import 'package:analysis_server/src/analysis_server.dart';
 import 'package:analysis_server/src/computer/error.dart';
 import 'package:analysis_server/src/constants.dart';
 import 'package:analysis_server/src/edit/fix.dart';
 import 'package:analysis_server/src/protocol.dart';
 import 'package:analysis_server/src/services/constants.dart';
+import 'package:analysis_server/src/services/correction/assist.dart';
+import 'package:analysis_server/src/services/correction/change.dart';
 import 'package:analysis_server/src/services/correction/fix.dart';
+import 'package:analysis_server/src/services/json.dart';
 import 'package:analysis_server/src/services/refactoring/refactoring.dart';
 import 'package:analysis_server/src/services/search/search_engine.dart';
 import 'package:analyzer/src/generated/ast.dart';
 import 'package:analyzer/src/generated/element.dart';
 import 'package:analyzer/src/generated/engine.dart' as engine;
 import 'package:analyzer/src/generated/error.dart' as engine;
 
 
 /**
  * Instances of the class [EditDomainHandler] implement a [RequestHandler]
@@ skipping 11 matching lines @@
   SearchEngine searchEngine;
 
   /**
    * Initialize a newly created handler to handle requests for the given [server].
    */
   EditDomainHandler(this.server) {
     searchEngine = server.searchEngine;
   }
 
   Response getAssists(Request request) {
-    // file
-    RequestDatum fileDatum = request.getRequiredParameter(FILE);
-    String file = fileDatum.asString();
-    // offset
-    RequestDatum offsetDatum = request.getRequiredParameter(OFFSET);
-    int offset = offsetDatum.asInt();
-    // length
-    RequestDatum lengthDatum = request.getRequiredParameter(LENGTH);
-    int length = lengthDatum.asInt();
-    // TODO(brianwilkerson) implement
-    return null;
+    String file = request.getRequiredParameter(FILE).asString();
+    int offset = request.getRequiredParameter(OFFSET).asInt();
+    int length = request.getRequiredParameter(LENGTH).asInt();
+    List<Change> changes = <Change>[];
+    List<CompilationUnit> units = server.getResolvedCompilationUnits(file);
+    if (units.isNotEmpty) {
+      CompilationUnit unit = units[0];
+      List<Assist> assists = computeAssists(searchEngine, unit, offset, length);
+      assists.forEach((Assist assist) {
+        changes.add(assist.change);
+      });
+    }
+    // respond
+    Response response = new Response(request.id);
+    response.setResult(ASSISTS, objectToJson(changes));
+    return response;
   }
 
   Response getAvailableRefactorings(Request request) {
     String file = request.getRequiredParameter(FILE).asString();
     int offset = request.getRequiredParameter(OFFSET).asInt();
     int length = request.getRequiredParameter(LENGTH).asInt();
     List<String> kinds = <String>[];
     List<Element> elements = server.getElementsAtOffset(file, offset);
     if (elements.isNotEmpty) {
       Element element = elements[0];
@@ skipping 16 matching lines @@
       engine.AnalysisErrorInfo errorInfo = server.getErrors(file);
       if (errorInfo != null) {
         for (engine.AnalysisError error in errorInfo.errors) {
           List<Fix> fixes = computeFixes(searchEngine, unit, error);
           if (fixes.isNotEmpty) {
             AnalysisError serverError =
                 new AnalysisError.fromEngine(errorInfo.lineInfo, error);
             ErrorFixes errorFixes = new ErrorFixes(serverError);
             errorFixesList.add(errorFixes);
             fixes.forEach((fix) {
-              return errorFixes.addFix(fix);
+              errorFixes.addFix(fix);
             });
           }
         }
       }
     }
     // respond
     return new Response(request.id)..setResult(FIXES, errorFixesList);
   }
 
   @override
@@ skipping 17 matching lines @@
 
 class RefactoringKind {
   static const String CONVERT_GETTER_TO_METHOD = 'CONVERT_GETTER_TO_METHOD';
   static const String CONVERT_METHOD_TO_GETTER = 'CONVERT_METHOD_TO_GETTER';
   static const String EXTRACT_LOCAL_VARIABLE = 'EXTRACT_LOCAL_VARIABLE';
   static const String EXTRACT_METHOD = 'EXTRACT_METHOD';
   static const String INLINE_LOCAL_VARIABLE = 'INLINE_LOCAL_VARIABLE';
   static const String INLINE_METHOD = 'INLINE_METHOD';
   static const String RENAME = 'RENAME';
 }