Quick Assist for creating a constructor for selected final fields.

pkg/analysis_server/test/services/correction/assist_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 test.services.correction.assist;
 
 import 'package:analysis_server/src/protocol.dart';
 import 'package:analysis_server/src/services/correction/assist.dart';
 import 'package:analyzer/src/generated/source.dart';
 import 'package:unittest/unittest.dart';
@@ skipping 1071 matching lines @@
 class A {
   bool get isEmpty => false;
 }
 main(A a) {
   !a.isEmpty;
 }
 ''');
     assertNoAssistAt('isEmpty;', AssistKind.CONVERT_INTO_IS_NOT_EMPTY);
   }
 
+  void test_createFinalFieldsConstructor() {

[Brian Wilkerson, 2015/03/15 23:43:22]

What happens with the following test input:

class A {
  final int a;
// start
  final int b;
  final int c = 3;
  final int d;
// end
  final int e;
}

Does it generate "A(this.b, this.d);" or "A(this.b, this.c, this.d);"?

+    resolveTestUnit('''
+class A {
+  final int a;
+// start
+  final int b;
+  final int c;
+// end
+  final int d;
+}
+''');
+    _setStartEndSelection();
+    assertHasAssist(AssistKind.CREATE_FINAL_FIELD_CONSTRUCTOR, '''
+class A {
+  final int a;
+// start
+  final int b;
+  final int c;
+// end
+  final int d;
+
+  A(this.b, this.c);
+}
+''');
+  }
+
   void test_exchangeBinaryExpressionArguments_OK_compare() {
     Map<String, String> operatorMap = {
       '<': '>',
       '<=': '>=',
       '>': '<',
       '>=': '<='
     };
     operatorMap.forEach((initialOperator, resultOperator) {
       resolveTestUnit('''
 bool main(int a, int b) {
@@ skipping 1530 matching lines @@
       positions.add(new Position(testFile, offset));
     }
     return positions;
   }
 
   void _setStartEndSelection() {
     offset = findOffset('// start\n') + '// start\n'.length;
     length = findOffset('// end') - offset;
   }
 }