tests/language/async_star/regression_fisk_test.dart

// Copyright (c) 2015, 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.

// This test may crash dart2js.

import "dart:async";
import "package:expect/async_helper.dart";
import "package:expect/expect.dart";

main() {
  var res = [];
  Stream<int> fisk() async* {
    res.add("+fisk");
    try {
      for (int i = 0; i < 2; i++) {
        yield await new Future.microtask(() => i);
      }
    } finally {
      res.add("-fisk");
    }
  }

  fugl(int count) async {
    res.add("fisk $count");
    try {
      await for (int i in fisk().take(count)) res.add(i);
    } finally {
      res.add("done");
    }
  }

  asyncStart();
  fugl(3).whenComplete(() => fugl(2)).whenComplete(() => fugl(1)).whenComplete(
    () {
      Expect.listEquals([
        "fisk 3",
        "+fisk",
        0,
        1,
        "-fisk",
        "done",
        "fisk 2",
        "+fisk",
        0,
        1,
        "-fisk",
        "done",
        "fisk 1",
        "+fisk",
        0,
        "-fisk",
        "done",
      ], res);
      asyncEnd();
    },
  );
}