LibTest/async/Stream/first_A03_t01.test.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.

// @dart = 2.9

/// @assertion Future<T> first
/// If an error event occurs before the first data event, the resulting
/// future is completed with that error.
/// @description Checks that if error event occurs before the first data
/// event, the future completes with that error.
/// @author ilya

library first_A03_t01;
import "dart:async";
import "../../../Utils/expect.dart";

void test(CreateStreamWithErrorsFunction create) {
  Stream s = create([1,2,3], isError:(_) => true);
  AsyncExpect.error(1, s.first);
}