mirror of
https://github.com/dart-lang/sdk
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b101a7d002
Change-Id: Ib33169c3e0ffc870915c189404074a1dea472546 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/196548 Reviewed-by: Bob Nystrom <rnystrom@google.com> Commit-Queue: Leaf Petersen <leafp@google.com>
87 lines
3.9 KiB
Dart
87 lines
3.9 KiB
Dart
// Copyright (c) 2018, 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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// @dart = 2.9
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library collection.from.test;
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import "package:expect/expect.dart";
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import 'dart:collection';
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main() {
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for (Iterable<num> elements in [
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new Set<num>(),
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<num>[],
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const <num>[],
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const <num, int>{}.keys,
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const <int, num>{}.values,
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new Iterable<num>.generate(0),
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new Set<num>()..add(1)..add(2)..add(4),
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<num>[1, 2, 4],
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new Iterable<num>.generate(3, (i) => [1, 2, 4][i]),
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const <num>[1, 2, 4],
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const <num, int>{1: 0, 2: 0, 4: 0}.keys,
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const <int, num>{1: 1, 2: 2, 4: 4}.values,
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]) {
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String sourceType = elements.runtimeType.toString();
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check(sourceType, elements, new List<num>.of(elements));
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Expect.throwsTypeError(() => new List<int>.of(elements));
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check(sourceType, elements, new List<Object>.of(elements));
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check(sourceType, elements, new Queue<num>.of(elements));
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Expect.throwsTypeError(() => new Queue<int>.of(elements));
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check(sourceType, elements, new Queue<Object>.of(elements));
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check(sourceType, elements, new ListQueue<num>.of(elements));
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Expect.throwsTypeError(() => new ListQueue<int>.of(elements));
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check(sourceType, elements, new ListQueue<Object>.of(elements));
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check(sourceType, elements, new DoubleLinkedQueue<num>.of(elements));
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Expect.throwsTypeError(() => new DoubleLinkedQueue<int>.of(elements));
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check(sourceType, elements, new DoubleLinkedQueue<Object>.of(elements));
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check(sourceType, elements, new Set<num>.of(elements));
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Expect.throwsTypeError(() => new Set<int>.of(elements));
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check(sourceType, elements, new Set<Object>.of(elements));
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check(sourceType, elements, new HashSet<num>.of(elements));
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Expect.throwsTypeError(() => new HashSet<int>.of(elements));
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check(sourceType, elements, new HashSet<Object>.of(elements));
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check(sourceType, elements, new LinkedHashSet<num>.of(elements));
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Expect.throwsTypeError(() => new LinkedHashSet<int>.of(elements));
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check(sourceType, elements, new LinkedHashSet<Object>.of(elements));
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check(sourceType, elements, new SplayTreeSet<num>.of(elements));
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Expect.throwsTypeError(() => new SplayTreeSet<int>.of(elements));
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check(sourceType, elements, new SplayTreeSet<Object>.of(elements));
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// Inference applies to the `of` constructor, unlike the `from` constructor.
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Expect.isTrue(new List.of(elements) is Iterable<num>);
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Expect.isTrue(new Queue.of(elements) is Iterable<num>);
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Expect.isTrue(new ListQueue.of(elements) is Iterable<num>);
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Expect.isTrue(new DoubleLinkedQueue.of(elements) is Iterable<num>);
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Expect.isTrue(new Set.of(elements) is Iterable<num>);
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Expect.isTrue(new HashSet.of(elements) is Iterable<num>);
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Expect.isTrue(new LinkedHashSet.of(elements) is Iterable<num>);
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Expect.isTrue(new SplayTreeSet.of(elements) is Iterable<num>);
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Expect.isTrue(new List.of(elements) is! Iterable<int>);
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Expect.isTrue(new Queue.of(elements) is! Iterable<int>);
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Expect.isTrue(new ListQueue.of(elements) is! Iterable<int>);
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Expect.isTrue(new DoubleLinkedQueue.of(elements) is! Iterable<int>);
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Expect.isTrue(new Set.of(elements) is! Iterable<int>);
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Expect.isTrue(new HashSet.of(elements) is! Iterable<int>);
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Expect.isTrue(new LinkedHashSet.of(elements) is! Iterable<int>);
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Expect.isTrue(new SplayTreeSet.of(elements) is! Iterable<int>);
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}
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}
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void check(String sourceType, Iterable<num> source, Iterable target) {
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String targetType = target.runtimeType.toString();
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String name = "$sourceType->$targetType";
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Expect.equals(source.length, target.length, "$name.length");
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for (var element in target) {
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Expect.isTrue(source.contains(element), "$name:$element in source");
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}
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for (var element in source) {
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Expect.isTrue(target.contains(element), "$name:$element in target");
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}
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}
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