Migrated test block 12 to Dart 2.0.

tests/corelib/iterable_take_while_test.dart

Index: tests/corelib/iterable_take_while_test.dart
diff --git a/tests/corelib/iterable_take_while_test.dart b/tests/corelib/iterable_take_while_test.dart
deleted file mode 100644
index 877f749be2861a9227baa76955f19628c14860ec..0000000000000000000000000000000000000000
--- a/tests/corelib/iterable_take_while_test.dart
+++ /dev/null
@@ -1,130 +0,0 @@
-// Copyright (c) 2012, 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.
-
-import "package:expect/expect.dart";
-
-main() {
-  List<int> list1 = <int>[1, 2, 3];
-  List<int> list2 = const <int>[4, 5];
-  List<String> list3 = <String>[];
-  Set<int> set1 = new Set<int>();
-  set1..add(11)..add(12)..add(13);
-  Set set2 = new Set();
-
-  Iterable<int> takeWhileFalse = list1.takeWhile((x) => false);
-  Iterator<int> it = takeWhileFalse.iterator;
-  Expect.isNull(it.current);
-  Expect.isFalse(it.moveNext());
-  Expect.isNull(it.current);
-
-  Iterable<int> takeWhileOdd = list1.takeWhile((x) => x.isOdd);
-  it = takeWhileOdd.iterator;
-  Expect.isNull(it.current);
-  Expect.isTrue(it.moveNext());
-  Expect.equals(1, it.current);
-  Expect.isFalse(it.moveNext());
-  Expect.isNull(it.current);
-
-  Iterable<int> takeWhileLessThan3 = list1.takeWhile((x) => x < 3);
-  it = takeWhileLessThan3.iterator;
-  Expect.isNull(it.current);
-  Expect.isTrue(it.moveNext());
-  Expect.equals(1, it.current);
-  Expect.isTrue(it.moveNext());
-  Expect.equals(2, it.current);
-  Expect.isFalse(it.moveNext());
-  Expect.isNull(it.current);
-
-  Iterable<int> takeEverything = list1.takeWhile((x) => true);
-  it = takeEverything.iterator;
-  Expect.isNull(it.current);
-  Expect.isTrue(it.moveNext());
-  Expect.equals(1, it.current);
-  Expect.isTrue(it.moveNext());
-  Expect.equals(2, it.current);
-  Expect.isTrue(it.moveNext());
-  Expect.equals(3, it.current);
-  Expect.isFalse(it.moveNext());
-  Expect.isNull(it.current);
-
-  Iterable<int> takeWhileEven = list1.takeWhile((x) => x.isEven);
-  it = takeWhileFalse.iterator;
-  Expect.isNull(it.current);
-  Expect.isFalse(it.moveNext());
-  Expect.isNull(it.current);
-
-  takeWhileFalse = list2.takeWhile((x) => false);
-  it = takeWhileFalse.iterator;
-  Expect.isNull(it.current);
-  Expect.isFalse(it.moveNext());
-  Expect.isNull(it.current);
-
-  takeWhileEven = list2.takeWhile((x) => x.isEven);
-  it = takeWhileEven.iterator;
-  Expect.isNull(it.current);
-  Expect.isTrue(it.moveNext());
-  Expect.equals(4, it.current);
-  Expect.isFalse(it.moveNext());
-  Expect.isNull(it.current);
-
-  takeEverything = list2.takeWhile((x) => true);
-  it = takeEverything.iterator;
-  Expect.isNull(it.current);
-  Expect.isTrue(it.moveNext());
-  Expect.equals(4, it.current);
-  Expect.isTrue(it.moveNext());
-  Expect.equals(5, it.current);
-  Expect.isFalse(it.moveNext());
-  Expect.isNull(it.current);
-
-  Iterable<String> takeWhileFalse2 = list3.takeWhile((x) => false);
-  Iterator<String> it2 = takeWhileFalse2.iterator;
-  Expect.isNull(it2.current);
-  Expect.isFalse(it2.moveNext());
-  Expect.isNull(it2.current);
-
-  Iterable<String> takeEverything2 = list3.takeWhile((x) => true);
-  it2 = takeEverything2.iterator;
-  Expect.isNull(it2.current);
-  Expect.isFalse(it2.moveNext());
-  Expect.isNull(it2.current);
-
-  takeWhileFalse = set1.takeWhile((x) => false);
-  it = takeWhileFalse.iterator;
-  Expect.isNull(it.current);
-  Expect.isFalse(it.moveNext());
-  Expect.isNull(it.current);
-
-  takeEverything = set1.takeWhile((x) => true);
-  List<int> copied = takeEverything.toList();
-  Expect.equals(3, copied.length);
-  Expect.isTrue(set1.contains(copied[0]));
-  Expect.isTrue(set1.contains(copied[1]));
-  Expect.isTrue(set1.contains(copied[1]));
-  Expect.isTrue(copied[0] != copied[1]);
-  Expect.isTrue(copied[0] != copied[2]);
-  Expect.isTrue(copied[1] != copied[2]);
-  it = takeEverything.iterator;
-  Expect.isNull(it.current);
-  Expect.isTrue(it.moveNext());
-  Expect.isTrue(it.current != null);
-  Expect.isTrue(it.moveNext());
-  Expect.isTrue(it.current != null);
-  Expect.isTrue(it.moveNext());
-  Expect.isTrue(it.current != null);
-  Expect.isFalse(it.moveNext());
-  Expect.isNull(it.current);
-
-  takeWhileFalse = set2.takeWhile((x) => false);
-  it = takeWhileFalse.iterator;
-  Expect.isNull(it.current);
-  Expect.isFalse(it.moveNext());
-  Expect.isNull(it.current);
-
-  takeEverything = set2.takeWhile((x) => true);
-  it = takeEverything.iterator;
-  Expect.isNull(it.current);
-  Expect.isFalse(it.moveNext());
-  Expect.isNull(it.current);
-}