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>
50 lines
1.5 KiB
Dart
50 lines
1.5 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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import 'dart:collection';
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import 'package:expect/expect.dart';
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main() {
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runTests(<K, V>(entries) => Map<K, V>.fromEntries(entries));
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runTests(<K, V>(entries) => HashMap<K, V>.fromEntries(entries));
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runTests(<K, V>(entries) => LinkedHashMap<K, V>.fromEntries(entries));
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}
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void runTests(Map<K, V> Function<K, V>(Iterable<MapEntry<K, V>>) ctor) {
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fromEntriesTest(ctor);
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emptyIterableTest(ctor);
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equalElementsTest(ctor);
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}
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void fromEntriesTest(Map<K, V> Function<K, V>(Iterable<MapEntry<K, V>>) ctor) {
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var map = ctor([MapEntry(1, "one"), MapEntry(2, "two")]);
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Expect.equals(2, map.length);
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Expect.equals(2, map.keys.length);
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Expect.equals(2, map.values.length);
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Expect.equals("one", map[1]);
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Expect.equals("two", map[2]);
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}
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void emptyIterableTest(
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Map<K, V> Function<K, V>(Iterable<MapEntry<K, V>>) ctor) {
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var map = ctor([]);
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Expect.equals(0, map.length);
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Expect.equals(0, map.keys.length);
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Expect.equals(0, map.values.length);
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}
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void equalElementsTest(
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Map<K, V> Function<K, V>(Iterable<MapEntry<K, V>>) ctor) {
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var map =
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ctor([MapEntry(1, "one"), MapEntry(2, "two"), MapEntry(2, "other")]);
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Expect.equals(2, map.length);
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Expect.equals(2, map.keys.length);
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Expect.equals(2, map.values.length);
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Expect.equals("one", map[1]);
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Expect.equals("other", map[2]);
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}
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