Quick Assist for creating a constructor for selected final fields.

pkg/analysis_server/test/services/correction/fix_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.fix;
 
 import 'package:analysis_server/src/protocol.dart' hide AnalysisError;
 import 'package:analysis_server/src/services/correction/fix.dart';
 import 'package:analyzer/file_system/file_system.dart';
 import 'package:analyzer/source/package_map_resolver.dart';
@@ skipping 269 matching lines @@
 main() {
   Test v = null;
 }
 
 class Test {
 }
 ''');
     _assertLinkedGroup(change.linkedEditGroups[0], ['Test v =', 'Test {']);
   }
 
+  void test_createConstructor_forFinalFields() {

[Brian Wilkerson, 2015/03/16 13:17:55]

Does this handle the case where there is already an unnamed constructor?

class Test {
  final int a;
  final int b;
  final int c;

  Test(this.b);
}

[scheglov, 2015/03/16 14:55:22]

No, not this fix.
I plan to add a separate one for updating existing constructors.
This location has a different location (a constructor vs. a field) and a quite
different implementation.

+    errorFilter = (AnalysisError error) {
+      return error.message.contains("'a'");
+    };
+    resolveTestUnit('''
+class Test {
+  final int a;
+  final int b = 2;
+  final int c;
+}
+''');
+    assertHasFix(FixKind.CREATE_CONSTRUCTOR_FOR_FINAL_FIELDS, '''
+class Test {
+  final int a;
+  final int b = 2;
+  final int c;
+
+  Test(this.a, this.c);
+}
+''');
+  }
+
   void test_createConstructor_insteadOfSyntheticDefault() {
     resolveTestUnit('''
 class A {
   int field;
 
   method() {}
 }
 main() {
   new A(1, 2.0);
 }
@@ skipping 2667 matching lines @@
   }
 
   void myUndefinedMethod(int i, double d, String s) {
   }
 }
 ''');
     // linked positions
     int index = 0;
     _assertLinkedGroup(
         change.linkedEditGroups[index++], ['void myUndefinedMethod(']);
-    _assertLinkedGroup(change.linkedEditGroups[index++],
-        ['myUndefinedMethod(0', 'myUndefinedMethod(int']);
+    _assertLinkedGroup(change.linkedEditGroups[index++], [
+      'myUndefinedMethod(0',
+      'myUndefinedMethod(int'
+    ]);
     _assertLinkedGroup(change.linkedEditGroups[index++], [
       'int i'
     ], expectedSuggestions(
         LinkedEditSuggestionKind.TYPE, ['int', 'num', 'Object', 'Comparable']));
     _assertLinkedGroup(change.linkedEditGroups[index++], ['i,']);
-    _assertLinkedGroup(change.linkedEditGroups[index++], [
-      'double d'
-    ], expectedSuggestions(LinkedEditSuggestionKind.TYPE, [
+    _assertLinkedGroup(change.linkedEditGroups[index++], ['double d'],
+        expectedSuggestions(LinkedEditSuggestionKind.TYPE, [
       'double',
       'num',
       'Object',
       'Comparable'
     ]));
     _assertLinkedGroup(change.linkedEditGroups[index++], ['d,']);
-    _assertLinkedGroup(change.linkedEditGroups[index++], [
-      'String s'
-    ], expectedSuggestions(
-        LinkedEditSuggestionKind.TYPE, ['String', 'Object', 'Comparable']));
+    _assertLinkedGroup(change.linkedEditGroups[index++], ['String s'],
+        expectedSuggestions(
+            LinkedEditSuggestionKind.TYPE, ['String', 'Object', 'Comparable']));
     _assertLinkedGroup(change.linkedEditGroups[index++], ['s)']);
   }
 
   void test_undefinedMethod_createUnqualified_returnType() {
     resolveTestUnit('''
 class A {
   main() {
     int v = myUndefinedMethod();
   }
 }
 ''');
     assertHasFix(FixKind.CREATE_METHOD, '''
 class A {
   main() {
     int v = myUndefinedMethod();
   }
 
   int myUndefinedMethod() {
   }
 }
 ''');
     // linked positions
     _assertLinkedGroup(change.linkedEditGroups[0], ['int myUndefinedMethod(']);
-    _assertLinkedGroup(change.linkedEditGroups[1],
-        ['myUndefinedMethod();', 'myUndefinedMethod() {']);
+    _assertLinkedGroup(change.linkedEditGroups[1], [
+      'myUndefinedMethod();',
+      'myUndefinedMethod() {'
+    ]);
   }
 
   void test_undefinedMethod_createUnqualified_staticFromField() {
     resolveTestUnit('''
 class A {
   static var f = myUndefinedMethod();
 }
 ''');
     assertHasFix(FixKind.CREATE_METHOD, '''
 class A {
@@ skipping 208 matching lines @@
 
   List<Position> _findResultPositions(List<String> searchStrings) {
     List<Position> positions = <Position>[];
     for (String search in searchStrings) {
       int offset = resultCode.indexOf(search);
       positions.add(new Position(testFile, offset));
     }
     return positions;
   }
 }