Future main()

in tool/fuzz_driver.dart [45:116]
53 lines of code
11 McCabe index (conditional complexity)

Future<void> main(List<String> args) async {
  if (args.isEmpty) {
    print('''
Usage: slow_test path_to_test_collection
    [seed = 0]
    [mutations per iteration = 2]
    [iterations = 5]
    [name of command to test = ALL]
    [dump server communications = false]''');

    io.exit(1);
  }

  // TODO: Replace this with args package.
  var seed = 0;
  final testCollectionRoot = args[0];
  if (args.length >= 2) seed = int.parse(args[1]);
  if (args.length >= 3) maxMutations = int.parse(args[2]);
  if (args.length >= 4) iterations = int.parse(args[3]);
  if (args.length >= 5) commandToRun = args[4];
  if (args.length >= 6) dumpServerComms = args[5].toLowerCase() == 'true';

  // Load the list of files.
  var fileEntities = <io.FileSystemEntity>[];
  if (io.FileSystemEntity.isDirectorySync(testCollectionRoot)) {
    final dir = io.Directory(testCollectionRoot);
    fileEntities = dir.listSync(recursive: true);
  } else {
    fileEntities = [io.File(testCollectionRoot)];
  }

  analysis_server.dumpServerMessages = false;

  var counter = 0;
  final sw = Stopwatch()..start();

  print('About to setuptools');
  final sdk = Sdk.create(stableChannel);
  print(sdk.dartSdkPath);

  // Warm up the services.
  await setupTools(sdk);

  print('Setup tools done');

  // Main testing loop.
  for (final fse in fileEntities) {
    counter++;
    if (!fse.path.endsWith('.dart')) continue;

    try {
      print('Seed: $seed, '
          '${((counter / fileEntities.length) * 100).toStringAsFixed(2)}%, '
          'Elapsed: ${sw.elapsed}');

      random = Random(seed);
      seed++;
      await testPath(fse.path, analysisServer!, compiler);
    } catch (e) {
      print(e);
      print('FAILED: ${fse.path}');

      // Try and re-cycle the services for the next test after the crash
      await setupTools(sdk);
    }
  }

  print('Shutting down');

  await analysisServer!.shutdown();
  await commonServerImpl.shutdown();
}