test_command.dart

// Copyright 2017 The Chromium Authors. 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:async';
import 'dart:io';

import 'package:args/command_runner.dart';
import 'package:path/path.dart' as p;

import 'common.dart';

class TestCommand extends Command<Null> {
  TestCommand(this.packagesDir);

  final Directory packagesDir;

  @override
  final String name = 'test';

  @override
  final String description = 'Runs the Dart tests for all packages.';

  @override
  Future<Null> run() async {
    final List<String> failingPackages = <String>[];
    await for (Directory packageDir in _listAllPackages(packagesDir)) {
      final String packageName =
          p.relative(packageDir.path, from: packagesDir.path);
      if (!new Directory(p.join(packageDir.path, 'test')).existsSync()) {
        print('\nSKIPPING $packageName - no test subdirectory');
        continue;
      }

      print('\nRUNNING $packageName tests...');
      final int exitCode = await runAndStream(
          'flutter', <String>['test', '--color'], packageDir);
      if (exitCode != 0) {
        failingPackages.add(packageName);
      }
    }

    print('\n\n');
    if (failingPackages.isNotEmpty) {
      print('Tests for the following packages are failing (see above):');
      failingPackages.forEach((String package) {
        print(' * $package');
      });
      throw new ToolExit(1);
    }

    print('All tests are passing!');
  }

  Stream<Directory> _listAllPackages(Directory root) => root
      .list(recursive: true)
      .where((FileSystemEntity entity) =>
          entity is File && p.basename(entity.path) == 'pubspec.yaml')
      .map((FileSystemEntity entity) => entity.parent);
}