LibTest/async/Zone/runBinaryGuarded_A01_t02.dart

// Copyright (c) 2011, 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.

/**
 * @assertion avoid runBinaryGuarded<T1, T2>(
 *                                    void action(T1 argument1, T2 argument2),
 *                                    T1 argument1,
 *                                    T2 argument2
 *                  )
 *    Executes the given action with argument1 and argument2 in this zone
 * and catches synchronous errors.
 *    See runGuarded.
 * @description Checks that synchronous [action] exceptions are caught
 * in zone.
 * @author a.semenov@unipro.ru
 */
import "dart:async";
import "../../../Utils/expect.dart";

main() {
  int handlerCallCount = 0;
  var caughtError = null;

  void handler(Zone self, ZoneDelegate parent, Zone zone, e, st) {
    handlerCallCount++;
    caughtError = e;
  }

  Zone zone = Zone.current.fork(
      specification: new ZoneSpecification(
          handleUncaughtError: handler
      )
  );

  void action(int x, String y) {
    throw "action error";
  }

  zone.runBinaryGuarded<int, String>(action, 1, "2");
  Expect.equals(1, handlerCallCount);
  Expect.equals("action error", caughtError);
}