Issue 19670. 'Create field' quick fix.

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:analysis_server/src/services/index/index.dart';
 import 'package:analysis_server/src/services/index/local_memory_index.dart';
@@ skipping 377 matching lines @@
   }
 
   method() {}
 }
 main() {
   new A.named(1, 2.0);
 }
 ''');
   }
 
+  void test_createField_qualified_instance_hasField() {
+    _indexTestUnit('''
+class A {
+  int aaa;
+  int zzz;
+
+  existingMethod() {}
+}
+main(A a) {
+  a.test = 5;
+}
+''');
+    assertHasFix(FixKind.CREATE_FIELD, '''
+class A {
+  int aaa;
+  int zzz;
+
+  int test;
+
+  existingMethod() {}
+}
+main(A a) {
+  a.test = 5;
+}
+''');
+  }
+
+  void test_createField_qualified_instance_hasMethod() {
+    _indexTestUnit('''
+class A {
+  existingMethod() {}
+}
+main(A a) {
+  a.test = 5;
+}
+''');
+    assertHasFix(FixKind.CREATE_FIELD, '''
+class A {
+  int test;
+
+  existingMethod() {}
+}
+main(A a) {
+  a.test = 5;
+}
+''');
+  }
+
+  void test_createField_qualified_static() {
+    _indexTestUnit('''
+class A {
+}
+main() {
+  A.test = 5;
+}
+''');
+    assertHasFix(FixKind.CREATE_FIELD, '''
+class A {
+  static int test;
+}
+main() {
+  A.test = 5;
+}
+''');
+  }
+
+  void test_createField_unqualified_instance() {
+    _indexTestUnit('''
+class A {
+  main() {
+    test = 5;
+  }
+}
+''');
+    assertHasFix(FixKind.CREATE_FIELD, '''
+class A {
+  int test;
+
+  main() {
+    test = 5;
+  }
+}
+''');
+  }
+
+  void test_createField_unqualified_static() {
+    _indexTestUnit('''
+class A {
+  static main() {
+    test = 5;
+  }
+}
+''');
+    assertHasFix(FixKind.CREATE_FIELD, '''
+class A {
+  static int test;
+
+  static main() {
+    test = 5;
+  }
+}
+''');
+  }
+
   void test_createFile_forImport() {
     testFile = '/my/project/bin/test.dart';
     _indexTestUnit('''
 import 'my_file.dart';
 ''');
     AnalysisError error = _findErrorToFix();
     fix = _assertHasFix(FixKind.CREATE_FILE, error);
     change = fix.change;
     // validate change
     List<SourceFileEdit> fileEdits = change.edits;
@@ skipping 1600 matching lines @@
       positions.add(new Position(testFile, offset));
     }
     return positions;
   }
 
   void _indexTestUnit(String code) {
     resolveTestUnit(code);
     index.indexUnit(context, testUnit);
   }
 }