mirror of
https://github.com/dart-lang/sdk
synced 2024-09-16 05:36:49 +00:00
4a484c88e1
Fixes #41743, #30155 BUG= http://dartbug.com/41743 Change-Id: I223905a92b7353cdc50498d265a6dfe2f2f614d9 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/160640 Commit-Queue: Lasse R.H. Nielsen <lrn@google.com> Reviewed-by: Nate Bosch <nbosch@google.com>
208 lines
6.4 KiB
Dart
208 lines
6.4 KiB
Dart
// Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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import "package:expect/expect.dart";
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main() {
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List<int> list1 = <int>[1, 2, 3];
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List<int> list2 = const <int>[4, 5];
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List<String> list3 = <String>[];
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Set<int> set1 = new Set<int>();
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set1..add(11)..add(12)..add(13);
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Set set2 = new Set();
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Iterable<int> take0 = list1.take(0);
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Iterator<int> it = take0.iterator;
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Expect.isFalse(it.moveNext());
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Iterable<int> take1 = list1.take(1);
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it = take1.iterator;
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Expect.isTrue(it.moveNext());
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Expect.equals(1, it.current);
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Expect.isFalse(it.moveNext());
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Iterable<int> take2 = list1.take(2);
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it = take2.iterator;
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Expect.isTrue(it.moveNext());
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Expect.equals(1, it.current);
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Expect.isTrue(it.moveNext());
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Expect.equals(2, it.current);
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Expect.isFalse(it.moveNext());
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Iterable<int> take3 = list1.take(3);
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it = take3.iterator;
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Expect.isTrue(it.moveNext());
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Expect.equals(1, it.current);
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Expect.isTrue(it.moveNext());
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Expect.equals(2, it.current);
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Expect.isTrue(it.moveNext());
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Expect.equals(3, it.current);
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Expect.isFalse(it.moveNext());
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Iterable<int> take4 = list1.take(4);
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it = take4.iterator;
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Expect.isTrue(it.moveNext());
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Expect.equals(1, it.current);
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Expect.isTrue(it.moveNext());
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Expect.equals(2, it.current);
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Expect.isTrue(it.moveNext());
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Expect.equals(3, it.current);
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Expect.isFalse(it.moveNext());
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take4 = list1.take(4);
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take3 = take4.take(3);
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take2 = take3.take(2);
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take1 = take2.take(1);
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take0 = take1.take(0);
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it = take0.iterator;
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Expect.isFalse(it.moveNext());
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it = take1.iterator;
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Expect.isTrue(it.moveNext());
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Expect.equals(1, it.current);
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Expect.isFalse(it.moveNext());
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it = take2.iterator;
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Expect.isTrue(it.moveNext());
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Expect.equals(1, it.current);
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Expect.isTrue(it.moveNext());
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Expect.equals(2, it.current);
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Expect.isFalse(it.moveNext());
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it = take3.iterator;
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Expect.isTrue(it.moveNext());
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Expect.equals(1, it.current);
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Expect.isTrue(it.moveNext());
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Expect.equals(2, it.current);
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Expect.isTrue(it.moveNext());
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Expect.equals(3, it.current);
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Expect.isFalse(it.moveNext());
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it = take4.iterator;
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Expect.isTrue(it.moveNext());
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Expect.equals(1, it.current);
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Expect.isTrue(it.moveNext());
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Expect.equals(2, it.current);
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Expect.isTrue(it.moveNext());
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Expect.equals(3, it.current);
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Expect.isFalse(it.moveNext());
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take0 = list2.take(0);
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it = take0.iterator;
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Expect.isFalse(it.moveNext());
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take1 = list2.take(1);
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it = take1.iterator;
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Expect.isTrue(it.moveNext());
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Expect.equals(4, it.current);
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Expect.isFalse(it.moveNext());
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take2 = list2.take(2);
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it = take2.iterator;
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Expect.isTrue(it.moveNext());
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Expect.equals(4, it.current);
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Expect.isTrue(it.moveNext());
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Expect.equals(5, it.current);
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Expect.isFalse(it.moveNext());
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take3 = list2.take(3);
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it = take3.iterator;
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Expect.isTrue(it.moveNext());
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Expect.equals(4, it.current);
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Expect.isTrue(it.moveNext());
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Expect.equals(5, it.current);
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Expect.isFalse(it.moveNext());
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Iterable<String> take02 = list3.take(0);
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Iterator<String> it2 = take02.iterator;
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Expect.isFalse(it2.moveNext());
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Iterable<String> take12 = list3.take(1);
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it2 = take12.iterator;
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Expect.isFalse(it2.moveNext());
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take0 = set1.take(0);
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it = take0.iterator;
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Expect.isFalse(it.moveNext());
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take1 = set1.take(1);
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List<int> copied = take1.toList();
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Expect.equals(1, copied.length);
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Expect.isTrue(set1.contains(copied[0]));
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it = take1.iterator;
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Expect.isTrue(it.moveNext());
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Expect.isNotNull(it.current);
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Expect.isFalse(it.moveNext());
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take2 = set1.take(2);
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copied = take2.toList();
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Expect.equals(2, copied.length);
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Expect.isTrue(set1.contains(copied[0]));
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Expect.isTrue(set1.contains(copied[1]));
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Expect.isTrue(copied[0] != copied[1]);
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it = take2.iterator;
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Expect.isTrue(it.moveNext());
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Expect.isNotNull(it.current);
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Expect.isTrue(it.moveNext());
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Expect.isNotNull(it.current);
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Expect.isFalse(it.moveNext());
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take3 = set1.take(3);
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copied = take3.toList();
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Expect.equals(3, copied.length);
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Expect.isTrue(set1.contains(copied[0]));
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Expect.isTrue(set1.contains(copied[1]));
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Expect.isTrue(set1.contains(copied[2]));
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Expect.isTrue(copied[0] != copied[1]);
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Expect.isTrue(copied[0] != copied[2]);
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Expect.isTrue(copied[1] != copied[2]);
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it = take3.iterator;
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Expect.isTrue(it.moveNext());
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Expect.isNotNull(it.current);
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Expect.isTrue(it.moveNext());
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Expect.isNotNull(it.current);
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Expect.isTrue(it.moveNext());
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Expect.isNotNull(it.current);
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Expect.isFalse(it.moveNext());
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var dynamicTake0 = set2.take(0);
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var dynamicIt = dynamicTake0.iterator;
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Expect.isFalse(dynamicIt.moveNext());
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var dynamicTake1 = set2.take(1);
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dynamicIt = dynamicTake1.iterator;
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Expect.isFalse(dynamicIt.moveNext());
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Expect.throwsRangeError(() => list1.skip(-1));
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Expect.throwsRangeError(() => list2.skip(-1));
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Expect.throwsRangeError(() => list3.skip(-1));
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Expect.throwsRangeError(() => set1.skip(-1));
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Expect.throwsRangeError(() => set2.skip(-1));
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Expect.throwsRangeError(() => list1.map((x) => x).skip(-1));
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Expect.throwsRangeError(() => list2.map((x) => x).skip(-1));
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Expect.throwsRangeError(() => list3.map((x) => x).skip(-1));
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Expect.throwsRangeError(() => set1.map((x) => x).skip(-1));
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Expect.throwsRangeError(() => set2.map((x) => x).skip(-1));
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// Iterable<dynamic>.
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var take5 = set2.take(0);
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var it3 = take5.iterator;
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Expect.isNull(it3.current);
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Expect.isFalse(it3.moveNext());
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Expect.isNull(it3.current);
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take5 = set2.take(1);
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it3 = take5.iterator;
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Expect.isNull(it3.current);
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Expect.isFalse(it3.moveNext());
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Expect.isNull(it3.current);
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Expect.throws(() => list1.take(-1), (e) => e is RangeError);
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Expect.throws(() => list2.take(-1), (e) => e is RangeError);
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Expect.throws(() => list3.take(-1), (e) => e is RangeError);
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Expect.throws(() => set1.take(-1), (e) => e is RangeError);
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Expect.throws(() => set2.take(-1), (e) => e is RangeError);
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Expect.throws(() => list1.map((x) => x).take(-1), (e) => e is RangeError);
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Expect.throws(() => list2.map((x) => x).take(-1), (e) => e is RangeError);
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Expect.throws(() => list3.map((x) => x).take(-1), (e) => e is RangeError);
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Expect.throws(() => set1.map((x) => x).take(-1), (e) => e is RangeError);
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Expect.throws(() => set2.map((x) => x).take(-1), (e) => e is RangeError);
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}
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