LibTest/core/Iterable/skipWhile_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.

/// @assertion Iterable<E> skipWhile(bool test(E value))
/// Every new Iterator of the returned Iterable iterates over all elements of
/// this.
/// @description Checks that for every new iterator, all elements either are
/// tested and satisfy the test, or are returned by the iterator .
/// @author kaigorodov

library skipWhile_A03_t01;
import "../../../Utils/expect.dart"	;

void check(Iterable a0, bool test0(var element)) {
  List all = new List.empty(growable: true);
  bool tst(var element) {
    bool res = test0(element);
    if (res) {
      all.add(element);
    }
    return res;
  }

  Iterable itbl = a0.skipWhile(tst);
  for (int k = 0; k < 5; k++) {
    all = [];
    Iterator it = itbl.iterator;
    while (it.moveNext()) {
      all.add(it.current);
    }  
    Expect.iterableEquals(a0, all);
  }
}

test(Iterable create([Iterable content])) {
  Iterable a0 = create([1, 3, 7, 4, 5, 6]);
  check(a0, (var element) => element == 1);
  check(a0, (var element) => true);
  check(a0, (var element) => false);
  check(a0, (var element) => element > 4);
  check(a0, (var element) => element < 4);
  check(a0, (var element) => element == 4);
}