test/cache/detect_deprecated_dir_test.dart

import 'dart:io';

import 'package:path/path.dart' as p;
import 'package:test/test.dart';
import 'package:test_descriptor/test_descriptor.dart';

import '../descriptor.dart' as d;
import '../test_pub.dart';

void main() async {
  test('Detects and warns about old cache dir', skip: !Platform.isWindows,
      () async {
    await d.dir('APPDATA', [
      d.dir('Pub', [d.dir('Cache')]),
    ]).create();
    final server = await servePackages();
    server.serve('foo', '1.0.0');
    await d.appDir(dependencies: {'foo': '^1.0.0'}).create();
    await pubGet(
      warning: contains('Found a legacy Pub cache at'),
      environment: {'APPDATA': d.path('APPDATA')},
    );
    expect(
      File(p.join(sandbox, 'APPDATA', 'Pub', 'Cache', 'DEPRECATED.md'))
          .existsSync(),
      isTrue,
    );
    server.serve('foo', '2.0.0');
    await d.appDir(dependencies: {'foo': '^2.0.0'}).create();
    await pubGet(
      warning: isNot(contains('Found a legacy Pub cache')),
    );
  });
}