// Copyright (c) 2012, 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 'package:test/test.dart';

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

main() {
  test('only requests versions that are needed during solving', () async {
    await servePackages((builder) {
      builder.serve("foo", "1.0.0");
      builder.serve("foo", "1.1.0");
      builder.serve("foo", "1.2.0");
      builder.serve("bar", "1.0.0");
      builder.serve("bar", "1.1.0");
      builder.serve("bar", "1.2.0");
    });

    await d.appDir({"foo": "any"}).create();

    // Get once so it gets cached.
    await pubGet();

    // Clear the cache. We don't care about anything that was served during
    // the initial get.
    globalServer.requestedPaths.clear();

    // Add "bar" to the dependencies.
    await d.appDir({"foo": "any", "bar": "any"}).create();

    // Run the solver again.
    await pubGet();

    await d.appPackagesFile({"foo": "1.2.0", "bar": "1.2.0"}).validate();

    // The get should not have done any network requests since the lock file is
    // up to date.
    expect(
        globalServer.requestedPaths,
        unorderedEquals([
          // Bar should be requested because it's new, but not foo.
          "api/packages/bar",
          // Need to download it.
          "packages/bar/versions/1.2.0.tar.gz"
        ]));
  });
}