LibTest/core/List/removeAt_A01_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 abstract E removeAt(int index)
 * Removes the element at position index from the list.
 * This reduces the length of the list by one and moves all later elements down
 * by one position. Returns the removed element.
 * @description Checks that the element at the index is removed. Checks that the
 * removed element is returned.
 * @author kaigorodov
 */
library removeAt_A01_t01;

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

test(List create([int length])) {

  check(List a0, int index) {
    List a=create();
    a.addAll(a0);
    var r=a.removeAt(index);
    Expect.equals(a0[index], r);
    Expect.equals(a0.length-1, a.length);
    for (int k=0; k<index; k++) {
      Expect.identical(a0[k], a[k]);
    }
    for (int k=index; k<a.length; k++) {
      Expect.identical(a0[k+1], a[k]);
    }
  }

  List a0=[1,3,3,4,5,6];
  check(a0, a0.length-1);
  check(a0, 0);
  check(a0, 3);
}