blob: 8bfc3fea60697c86e0f2d61d3a995b73c63b0ca3 [file] [log] [blame]
/*
* Copyright (c) 2013, 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 singleWhere(bool test(E element))
* ...
* Checks all elements to see if test(element) returns true. If exactly one
* element satisfies test, that element is returned. Otherwise, if there are
* no matching elements, or if there is more than one matching element, a
* StateError is thrown.
* @description Checks that a [StateError] is thrown if more than one element
* match [test].
* @author msyabro
*/
import "dart:typed_data";
import "../../../Utils/expect.dart";
main() {
var l = new Float32List.fromList([1.0, 2.0, 3.0, 4.0, 5.0]);
try {
l.singleWhere((e) => true);
Expect.fail("StateError is expected");
} on StateError {}
l = new Float32List.fromList([1.0, 2.0, 3.0, 4.0, 5.0]);
try {
l.singleWhere((e) => e != 0.0);
Expect.fail("StateError is expected");
} on StateError {}
}