| // Copyright (c) 2020, 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. |
| |
| // Tests auto-detection of null safety mode in gen_kernel tool. |
| |
| import 'dart:io' show File, Platform; |
| |
| import 'package:path/path.dart' as path; |
| import 'snapshot_test_helper.dart'; |
| |
| compileAndRunTest(String comment, String expectedOutput) async { |
| await withTempDir((String temp) async { |
| final testScriptPath = path.join(temp, 'test.dart'); |
| File(testScriptPath).writeAsStringSync(''' |
| // $comment |
| |
| void main() { |
| try { |
| null as int; |
| print('weak mode'); |
| } on TypeError { |
| print('strong mode'); |
| } |
| } |
| '''); |
| |
| final testDillPath = path.join(temp, 'test.dill'); |
| await runGenKernelWithoutStandardOptions('BUILD DILL FILE', [ |
| "--platform", |
| platformDill, |
| '--output=$testDillPath', |
| testScriptPath, |
| ]); |
| |
| final result = await runBinary( |
| 'RUN TEST FROM DILL', Platform.executable, [testDillPath]); |
| expectOutput(expectedOutput, result); |
| }); |
| } |
| |
| main() async { |
| await compileAndRunTest('', 'strong mode'); |
| await compileAndRunTest('@dart=2.7', 'weak mode'); |
| } |