LibTest/core/Iterable/elementAt_A02_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.

/**
 * @assertion E elementAt(int index)
 * Returns the indexth element.
 * The index must be non-negative and less than length. Index zero represents
 * the first element (so iterable.elementAt(0) is equivalent to iterable.first).
 * May iterate through the elements in iteration order, skipping the first index
 * elements and returning the next. Some iterable may have more efficient ways
 * to find the element.
 * @description Checks that a RangeError is thrown if this list  has fewer than
 * index elements.
 * @author kaigorodov
 */
library elementAt_A02_t01;

import "../../../Utils/expect.dart";

var v;

void check (Iterable a, int index) {
  Expect.throws(() {v = a.elementAt(index);}, (e) => e is RangeError );
}

test(Iterable create([Iterable content])) {
  List a = [5, 4, 3, 2, 1, 0];
  check(create(a), -1);
  check(create(a), a.length);
  check(create(a), a.length + 1);
  check(create(a), a.length * 2);
  check(create(a), 1000000000);
}