blob: ab67d47e8255e67b4a22a4b5777067510590378a [file] [log] [blame]
// 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 E firstWhere(bool test(E element), {E orElse()})
/// Returns the first element that satisfies the given predicate test.
/// Iterates through elements and returns the first to satsify test.
/// If no element satisfies test, the result of invoking the orElse function
/// is returned. If orElse is omitted, it defaults to throwing a StateError.
/// @description Checks that the result of invoking the orElse function is
/// returned if no matches found.
/// @author kaigorodov
library firstWhere_A02_t01;
import "../../../Utils/expect.dart";
class TestException {}
check(Iterable list) {
Expect.throws(() {
list.firstWhere((var value) => false,
orElse: (){throw new TestException();});
}, (e) => e is TestException
test(Iterable create([Iterable content])) {
check(create([1, 2, 3]));