Quick Fix for CAN_BE_NULL_AFTER_NULL_AWARE.

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/plugin/edit/fix/fix_core.dart';
 import 'package:analysis_server/plugin/protocol/protocol.dart'
     hide AnalysisError;
 import 'package:analysis_server/src/services/correction/fix.dart';
@@ skipping 380 matching lines @@
 ''');
     assertHasFix(
         DartFixKind.REPLACE_BOOLEAN_WITH_BOOL,
         '''
 main() {
   bool v;
 }
 ''');
   }
 
+  void test_canBeNullAfterNullAware_chain() {
+    resolveTestUnit('''
+main(x) {
+  x?.a.b.c;
+}
+''');
+    assertHasFix(
+        DartFixKind.REPLACE_WITH_NULL_AWARE,
+        '''
+main(x) {
+  x?.a?.b?.c;
+}
+''');
+  }
+
+  void test_canBeNullAfterNullAware_methodInvocation() {
+    resolveTestUnit('''
+main(x) {
+  x?.a.b();
+}
+''');
+    assertHasFix(
+        DartFixKind.REPLACE_WITH_NULL_AWARE,
+        '''
+main(x) {
+  x?.a?.b();
+}
+''');
+  }
+
+  void test_canBeNullAfterNullAware_propertyAccess() {
+    resolveTestUnit('''
+main(x) {
+  x?.a().b;
+}
+''');
+    assertHasFix(
+        DartFixKind.REPLACE_WITH_NULL_AWARE,
+        '''
+main(x) {
+  x?.a()?.b;
+}
+''');
+  }
+
   void test_changeToStaticAccess_method() {
     resolveTestUnit('''
 class A {
   static foo() {}
 }
 main(A a) {
   a.foo();
 }
 ''');
     assertHasFix(
@@ skipping 4157 matching lines @@
       int offset = resultCode.indexOf(search);
       positions.add(new Position(testFile, offset));
     }
     return positions;
   }
 
   void _performAnalysis() {
     while (context.performAnalysisTask().hasMoreWork);
   }
 }