Add a test that requires adding an import

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.
 
 import 'dart:async';
 
 import 'package:analysis_server/plugin/edit/fix/fix_core.dart';
 import 'package:analysis_server/plugin/edit/fix/fix_dart.dart';
 import 'package:analysis_server/src/services/correction/fix.dart';
 import 'package:analysis_server/src/services/correction/fix_internal.dart';
@@ skipping 2490 matching lines @@
 ''');
     await assertHasFix(DartFixKind.CREATE_LOCAL_VARIABLE, '''
 main() {
   var test;
   test.add('hello');
 }
 ''');
     _assertLinkedGroup(change.linkedEditGroups[0], ['test;', 'test.add(']);
   }
 
+  test_createLocalVariable_withImport() async {
+    addPackageSource('analyzer', 'file_system/physical_file_system.dart', '''

[scheglov, 2017/08/12 22:28:32]

I would prefer to use sanitized test with synthetic names, like a/b/c.

It's usually good to start with actual user code that exhibits a problem, but
this code should be reduced and cleared until it has only essential parts.

[Brian Wilkerson, 2017/08/13 15:33:34]

Done

+class PhysicalResourceProvider {
+  static final INSTANCE = null;
+}
+''');
+    addPackageSource('analyzer', 'src/generated/sdk.dart', '''
+class DartSdkManager {}
+''');
+    addPackageSource('analyzer', 'src/context/builder.dart', '''
+import 'package:analyzer/file_system/physical_file_system.dart';
+import 'package:analyzer/src/generated/sdk.dart';
+
+class ContextBuilder {
+  ContextBuilder(PhysicalResourceProvider p, DartSdkManager m, i);
+}
+''');
+
+    await resolveTestUnit('''
+import 'package:analyzer/file_system/physical_file_system.dart';
+import 'package:analyzer/src/context/builder.dart';
+
+main() {
+  String path = '/dart/issue30424/flutter/packages/flutter';
+
+  var resourceProvider = PhysicalResourceProvider.INSTANCE;
+
+  new ContextBuilder(resourceProvider, sdkManager, null);
+}
+''');
+    await assertHasFix(DartFixKind.CREATE_LOCAL_VARIABLE, '''
+import 'package:analyzer/file_system/physical_file_system.dart';
+import 'package:analyzer/src/context/builder.dart';
+import 'package:analyzer/src/generated/sdk.dart';
+
+main() {
+  String path = '/dart/issue30424/flutter/packages/flutter';
+
+  var resourceProvider = PhysicalResourceProvider.INSTANCE;
+
+  DartSdkManager sdkManager;
+  new ContextBuilder(resourceProvider, sdkManager, null);
+}
+''');
+  }
+
   test_createLocalVariable_write_assignment() async {
     await resolveTestUnit('''
 main() {
   test = 42;
 }
 ''');
     await assertHasFix(DartFixKind.CREATE_LOCAL_VARIABLE, '''
 main() {
   var test = 42;
 }
@@ skipping 3960 matching lines @@
   @override
   final AnalysisError error;
 
   _DartFixContextImpl(this.resourceProvider, this.analysisDriver,
       this.astProvider, this.unit, this.error);
 
   @override
   GetTopLevelDeclarations get getTopLevelDeclarations =>
       analysisDriver.getTopLevelNameDeclarations;
 }