Switch on null-aware operators by default in analyzer.

pkg/analyzer/test/generated/non_error_resolver_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 engine.non_error_resolver_test;
 
 import 'package:analyzer/src/generated/ast.dart';
 import 'package:analyzer/src/generated/element.dart';
 import 'package:analyzer/src/generated/engine.dart';
 import 'package:analyzer/src/generated/error.dart';
@@ skipping 2354 matching lines @@
   void test_invalidAssignment_defaultValue_optional() {
     Source source = addSource(r'''
 f([String x = '0']) {
 }''');
     computeLibrarySourceErrors(source);
     assertNoErrors(source);
     verify([source]);
   }
 
   void test_invalidAssignment_ifNullAssignment_compatibleType() {
-    AnalysisOptionsImpl options = new AnalysisOptionsImpl();
-    options.enableNullAwareOperators = true;
-    resetWithOptions(options);
     Source source = addSource('''
 void f(int i) {
   num n;
   n ??= i;
 }
 ''');
     computeLibrarySourceErrors(source);
     assertNoErrors(source);
     verify([source]);
   }
 
   void test_invalidAssignment_ifNullAssignment_sameType() {
-    AnalysisOptionsImpl options = new AnalysisOptionsImpl();
-    options.enableNullAwareOperators = true;
-    resetWithOptions(options);
     Source source = addSource('''
 void f(int i) {
   int j;
   j ??= i;
 }
 ''');
     computeLibrarySourceErrors(source);
     assertNoErrors(source);
     verify([source]);
   }
@@ skipping 2601 matching lines @@
   Bar.ctor() : super.ctor();
 }''');
     computeLibrarySourceErrors(source);
     assertNoErrors(source);
     verify([source]);
   }
 
   void test_undefinedGetter_typeLiteral_conditionalAccess() {
     // When applied to a type literal, the conditional access operator '?.' can
     // be used to access instance getters of Type.
-    AnalysisOptionsImpl options = new AnalysisOptionsImpl();
-    options.enableNullAwareOperators = true;
-    resetWithOptions(options);
     Source source = addSource('''
 class A {}
 f() => A?.hashCode;
 ''');
     computeLibrarySourceErrors(source);
     assertNoErrors(source);
     verify([source]);
   }
 
   void test_undefinedGetter_typeSubstitution() {
@@ skipping 67 matching lines @@
   (() => null)();
 }''');
     computeLibrarySourceErrors(source);
     assertNoErrors(source);
     // A call to verify(source) fails as '(() => null)()' isn't resolved.
   }
 
   void test_undefinedMethod_typeLiteral_conditionalAccess() {
     // When applied to a type literal, the conditional access operator '?.' can
     // be used to access instance methods of Type.
-    AnalysisOptionsImpl options = new AnalysisOptionsImpl();
-    options.enableNullAwareOperators = true;
-    resetWithOptions(options);
     Source source = addSource('''
 class A {}
 f() => A?.toString();
 ''');
     computeLibrarySourceErrors(source);
     assertNoErrors(source);
     verify([source]);
   }
 
   void test_undefinedOperator_index() {
@@ skipping 413 matching lines @@
     reset();
   }
 
   void _check_wrongNumberOfParametersForOperator1(String name) {
     _check_wrongNumberOfParametersForOperator(name, "a");
   }
 
   CompilationUnit _getResolvedLibraryUnit(Source source) =>
       analysisContext.getResolvedCompilationUnit2(source, source);
 }