LibTest/collection/LinkedList/skipWhile_A04_t01.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))
 * Once an element does not satisfy the test the iterator stops testing and uses
 * every later element unconditionally.
 * That is, the elements of the returned Iterable are the elements of this
 * starting from the first element that does not satisfy test.
 * @description Checks that once an element does not satisfy the test,
 * the iterator stops testing and uses every element unconditionally.
 * @author kaigorodov
 */
import "dart:collection";
import "../../../Utils/expect.dart";
import "LinkedList.lib.dart";

void check(LinkedList<MyLinkedListEntry<int>> a0, bool test0(int element)) {
  bool testPassed=null;
  bool test(MyLinkedListEntry<int> entry) {
    Expect.isTrue(testPassed==null || testPassed, "testPassed=$testPassed for element=${entry.value}");
    return testPassed=!test0(entry.value);
  }
  for (MyLinkedListEntry<int> element in a0.skipWhile(test)) {
    Expect.isTrue(testPassed==null || !testPassed);
  }  
}

main() {
  LinkedList<MyLinkedListEntry<int>> a0=toLinkedList([1,3,7,4,5,6,1]);
  check(a0, (int element)=>element==1);
  check(a0, (int element)=>true);
  check(a0, (int element)=>false);
  check(a0, (int element)=>element>4);
  check(a0, (int element)=>element<4);
  check(a0, (int element)=>element==4);
}