Enable messages in asserts by default

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 analyzer.test.generated.non_error_resolver_test;
 
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/element/element.dart';
 import 'package:analyzer/error/error.dart';
 import 'package:analyzer/src/error/codes.dart';
@@ skipping 355 matching lines @@
 typedef A(int p1, String p2);
 f(A a) {
   a(1, '2');
 }''');
     computeLibrarySourceErrors(source);
     assertNoErrors(source);
     verify([source]);
   }
 
   void test_assert_with_message_await() {
-    resetWithOptions(new AnalysisOptionsImpl()..enableAssertMessage = true);
     Source source = addSource('''
 import 'dart:async';
 f() async {
   assert(false, await g());
 }
 Future<String> g() => null;
 ''');
     computeLibrarySourceErrors(source);
     assertNoErrors(source);
     verify([source]);
   }
 
   void test_assert_with_message_dynamic() {
-    resetWithOptions(new AnalysisOptionsImpl()..enableAssertMessage = true);
     Source source = addSource('''
 f() {
   assert(false, g());
 }
 g() => null;
 ''');
     computeLibrarySourceErrors(source);
     assertNoErrors(source);
     verify([source]);
   }
 
   void test_assert_with_message_non_string() {
-    resetWithOptions(new AnalysisOptionsImpl()..enableAssertMessage = true);
     Source source = addSource('''
 f() {
   assert(false, 3);
 }
 ''');
     computeLibrarySourceErrors(source);
     assertNoErrors(source);
     verify([source]);
   }
 
   void test_assert_with_message_null() {
-    resetWithOptions(new AnalysisOptionsImpl()..enableAssertMessage = true);
     Source source = addSource('''
 f() {
   assert(false, null);
 }
 ''');
     computeLibrarySourceErrors(source);
     assertNoErrors(source);
     verify([source]);
   }
 
   void test_assert_with_message_string() {
-    resetWithOptions(new AnalysisOptionsImpl()..enableAssertMessage = true);
     Source source = addSource('''
 f() {
   assert(false, 'message');
 }
 ''');
     computeLibrarySourceErrors(source);
     assertNoErrors(source);
     verify([source]);
   }
 
   void test_assert_with_message_suppresses_unused_var_hint() {
-    resetWithOptions(new AnalysisOptionsImpl()..enableAssertMessage = true);
     Source source = addSource('''
 f() {
   String message = 'msg';
   assert(true, message);
 }
 ''');
     computeLibrarySourceErrors(source);
     assertNoErrors(source);
     verify([source]);
   }
@@ skipping 5811 matching lines @@
     reset();
   }
 
   void _check_wrongNumberOfParametersForOperator1(String name) {
     _check_wrongNumberOfParametersForOperator(name, "a");
   }
 
   CompilationUnit _getResolvedLibraryUnit(Source source) =>
       analysisContext.getResolvedCompilationUnit2(source, source);
 }