Make error producing tests ansynchronous.

pkg/analyzer/test/generated/error_suppression_test.dart

 // Copyright (c) 2016, 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 'package:analyzer/src/error/codes.dart';
 import 'package:analyzer/src/generated/source.dart';
 import 'package:analyzer/src/generated/source_io.dart';
 import 'package:test_reflective_loader/test_reflective_loader.dart';
 
 import 'resolver_test_case.dart';
 
 main() {
   defineReflectiveSuite(() {
     defineReflectiveTests(ErrorSuppressionTest);
   });
 }
 
 @reflectiveTest
 class ErrorSuppressionTest extends ResolverTestCase {
-  void test_error_code_mismatch() {
+  test_error_code_mismatch() async {
     Source source = addSource('''
 // ignore: const_initialized_with_non_constant_value
 int x = '';
 const y = x; //CONST_INITIALIZED_WITH_NON_CONSTANT_VALUE
 ''');
-    assertErrors(source, [
+    await assertErrors(source, [
       StaticTypeWarningCode.INVALID_ASSIGNMENT,
       CompileTimeErrorCode.CONST_INITIALIZED_WITH_NON_CONSTANT_VALUE
     ]);
   }
 
-  void test_ignore_first() {
+  test_ignore_first() async {
     Source source = addSource('''
 // ignore: invalid_assignment
 int x = '';
 // ... but no ignore here ...
 const y = x; //CONST_INITIALIZED_WITH_NON_CONSTANT_VALUE
 ''');
-    assertErrors(source,
+    await assertErrors(source,
         [CompileTimeErrorCode.CONST_INITIALIZED_WITH_NON_CONSTANT_VALUE]);
   }
 
-  void test_ignore_first_trailing() {
+  test_ignore_first_trailing() async {
     Source source = addSource('''
 int x = ''; // ignore: invalid_assignment
 // ... but no ignore here ...
 const y = x; //CONST_INITIALIZED_WITH_NON_CONSTANT_VALUE
 ''');
-    assertErrors(source,
+    await assertErrors(source,
         [CompileTimeErrorCode.CONST_INITIALIZED_WITH_NON_CONSTANT_VALUE]);
   }
 
-  void test_ignore_only_trailing() {
+  test_ignore_only_trailing() async {
     Source source = addSource('''
 int x = ''; // ignore: invalid_assignment
 ''');
-    assertErrors(source, []);
+    await assertErrors(source, []);
   }
 
-  void test_ignore_second() {
+  test_ignore_second() async {
     Source source = addSource('''
 //INVALID_ASSIGNMENT
 int x = '';
 // ignore: const_initialized_with_non_constant_value
 const y = x; //CONST_INITIALIZED_WITH_NON_CONSTANT_VALUE
 ''');
-    assertErrors(source, [StaticTypeWarningCode.INVALID_ASSIGNMENT]);
+    await assertErrors(source, [StaticTypeWarningCode.INVALID_ASSIGNMENT]);
   }
 
-  void test_ignore_second_trailing() {
+  test_ignore_second_trailing() async {
     Source source = addSource('''
 //INVALID_ASSIGNMENT
 int x = '';
 const y = x; // ignore: const_initialized_with_non_constant_value
 ''');
-    assertErrors(source, [StaticTypeWarningCode.INVALID_ASSIGNMENT]);
+    await assertErrors(source, [StaticTypeWarningCode.INVALID_ASSIGNMENT]);
   }
 
-  void test_ignore_upper_case() {
+  test_ignore_upper_case() async {
     Source source = addSource('''
 int x = ''; // ignore: INVALID_ASSIGNMENT
 ''');
-    assertErrors(source, []);
+    await assertErrors(source, []);
   }
 
-  void test_invalid_error_code() {
+  test_invalid_error_code() async {
     Source source = addSource('''
 // ignore: right_format_wrong_code
 int x = '';
 const y = x; //CONST_INITIALIZED_WITH_NON_CONSTANT_VALUE
 ''');
-    assertErrors(source, [
+    await assertErrors(source, [
       StaticTypeWarningCode.INVALID_ASSIGNMENT,
       CompileTimeErrorCode.CONST_INITIALIZED_WITH_NON_CONSTANT_VALUE
     ]);
   }
 
-  void test_missing_error_codes() {
+  test_missing_error_codes() async {
     Source source = addSource('''
     int x = 3;
 // ignore:
 const String y = x; //INVALID_ASSIGNMENT, CONST_INITIALIZED_WITH_NON_CONSTANT_VALUE
 ''');
-    assertErrors(source, [
+    await assertErrors(source, [
       StaticTypeWarningCode.INVALID_ASSIGNMENT,
       CompileTimeErrorCode.CONST_INITIALIZED_WITH_NON_CONSTANT_VALUE
     ]);
   }
 
-  void test_missing_metadata_suffix() {
+  test_missing_metadata_suffix() async {
     Source source = addSource('''
 // ignore invalid_assignment
 String y = 3; //INVALID_ASSIGNMENT
 ''');
-    assertErrors(source, [StaticTypeWarningCode.INVALID_ASSIGNMENT]);
+    await assertErrors(source, [StaticTypeWarningCode.INVALID_ASSIGNMENT]);
   }
 
-  void test_multiple_comments() {
+  test_multiple_comments() async {
     Source source = addSource('''
 int x = ''; //This is the first comment...
 // ignore: const_initialized_with_non_constant_value
 const y = x; //CONST_INITIALIZED_WITH_NON_CONSTANT_VALUE
 ''');
-    assertErrors(source, [StaticTypeWarningCode.INVALID_ASSIGNMENT]);
+    await assertErrors(source, [StaticTypeWarningCode.INVALID_ASSIGNMENT]);
   }
 
-  void test_multiple_ignores() {
+  test_multiple_ignores() async {
     Source source = addSource('''
 int x = 3;
 // ignore: invalid_assignment, const_initialized_with_non_constant_value
 const String y = x; //INVALID_ASSIGNMENT, CONST_INITIALIZED_WITH_NON_CONSTANT_VALUE
 ''');
-    assertErrors(source, []);
+    await assertErrors(source, []);
   }
 
-  void test_multiple_ignores_traling() {
+  test_multiple_ignores_traling() async {
     Source source = addSource('''
 int x = 3;
 const String y = x; // ignore: invalid_assignment, const_initialized_with_non_constant_value
 ''');
-    assertErrors(source, []);
+    await assertErrors(source, []);
   }
 
-  void test_multiple_ignores_whitespace_variant_1() {
+  test_multiple_ignores_whitespace_variant_1() async {
     Source source = addSource('''
 int x = 3;
 //ignore:invalid_assignment,const_initialized_with_non_constant_value
 const String y = x; //INVALID_ASSIGNMENT, CONST_INITIALIZED_WITH_NON_CONSTANT_VALUE
 ''');
-    assertErrors(source, []);
+    await assertErrors(source, []);
   }
 
-  void test_multiple_ignores_whitespace_variant_2() {
+  test_multiple_ignores_whitespace_variant_2() async {
     Source source = addSource('''
 int x = 3;
 //ignore: invalid_assignment,const_initialized_with_non_constant_value
 const String y = x; //INVALID_ASSIGNMENT, CONST_INITIALIZED_WITH_NON_CONSTANT_VALUE
 ''');
-    assertErrors(source, []);
+    await assertErrors(source, []);
   }
 
-  void test_multiple_ignores_whitespace_variant_3() {
+  test_multiple_ignores_whitespace_variant_3() async {
     Source source = addSource('''
 int x = 3;
 // ignore: invalid_assignment,const_initialized_with_non_constant_value
 const String y = x; //INVALID_ASSIGNMENT, CONST_INITIALIZED_WITH_NON_CONSTANT_VALUE
 ''');
-    assertErrors(source, []);
+    await assertErrors(source, []);
   }
 
-  void test_no_ignores() {
+  test_no_ignores() async {
     Source source = addSource('''
 int x = '';  //INVALID_ASSIGNMENT
 const y = x; //CONST_INITIALIZED_WITH_NON_CONSTANT_VALUE
 ''');
-    assertErrors(source, [
+    await assertErrors(source, [
       StaticTypeWarningCode.INVALID_ASSIGNMENT,
       CompileTimeErrorCode.CONST_INITIALIZED_WITH_NON_CONSTANT_VALUE
     ]);
   }
 }