pkg/dartdev/test/load_from_dill_test.dart

// Copyright (c) 2021, 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 'dart:io';

import 'package:test/test.dart';

import 'utils.dart';

void main() {
  late TestProject p;

  setUp(() => p = project(mainSrc: "void main() { print('Hello World'); }"));

  test(
    "Fallback to dartdev.dill from dartdev.dart.snapshot for 'Hello World'",
    () async {
      // The DartDev snapshot includes the --use_field_guards flag. If
      // --no-use-field-guards is passed, the VM will fail to load the
      // snapshot and should fall back to using the DartDev dill file.
      ProcessResult result = await p.run([
        '--no-use-field-guards',
        'run',
        p.relativeFilePath,
      ]);

      expect(result.stdout, contains('Hello World'));
      expect(result.stderr, isEmpty);
      expect(result.exitCode, 0);
    },
  );
}