pkg/dartdev/test/commands/debug_adapter_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:convert';

import 'package:test/test.dart';

import '../utils.dart';

void main() {
  group('debug_adapter', debugAdapter, timeout: longTimeout);
}

void debugAdapter() {
  // Implementation of debug_adapter is tested in the DDS package where the
  // DAP implementation lives.
  for (final commandName in ['debug-adapter', 'debug_adapter']) {
    test('$commandName --help', () async {
      final p = project();
      var result = await p.run([commandName, '--help']);

      expect(
        result.stdout,
        contains(
          'Start a debug adapter that conforms to the Debug Adapter Protocol.',
        ),
      );
      expect(
        result.stdout,
        contains('Whether to use the "dart test" debug adapter to run tests'),
      );
      expect(result.stderr, isEmpty);
      expect(result.exitCode, 0);
    });

    test('$commandName invalid input provides a suitable message', () async {
      final p = project();
      final process = await p.start([commandName]);

      // Capture stderr
      final errorOutput = StringBuffer();
      process.stderr.transform(utf8.decoder).listen(errorOutput.write);

      // Write invalid headers and await quit.
      process.stdin.write('foo\r\nbar\r\n\r\n');
      await process.exitCode;

      expect(
        errorOutput.toString(),
        allOf(
          contains('Input could not be parsed'),
          contains('is intended for use by tooling'),
          contains('foo\r\nbar'),
        ),
      );
    });
  }
}