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>
120 lines
3.1 KiB
Dart
120 lines
3.1 KiB
Dart
// Copyright (c) 2011, 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 "package:expect/expect.dart";
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import 'dart:collection';
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main() {
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defaultFunctionValuesTest();
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defaultKeyFunctionTest();
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defaultValueFunctionTest();
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noDefaultValuesTest();
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emptyIterableTest();
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equalElementsTest();
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genericTypeTest();
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}
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void defaultFunctionValuesTest() {
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var map = new LinkedHashMap.fromIterable([1, 2, 3]);
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Expect.isTrue(map is Map);
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Expect.isTrue(map is LinkedHashMap);
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Expect.equals(3, map.length);
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Expect.equals(3, map.keys.length);
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Expect.equals(3, map.values.length);
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Expect.equals(1, map[1]);
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Expect.equals(2, map[2]);
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Expect.equals(3, map[3]);
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}
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void defaultKeyFunctionTest() {
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var map = new LinkedHashMap.fromIterable([1, 2, 3], value: (x) => x + 1);
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Expect.isTrue(map is Map);
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Expect.isTrue(map is LinkedHashMap);
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Expect.equals(3, map.length);
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Expect.equals(3, map.keys.length);
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Expect.equals(3, map.values.length);
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Expect.equals(2, map[1]);
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Expect.equals(3, map[2]);
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Expect.equals(4, map[3]);
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}
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void defaultValueFunctionTest() {
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var map = new LinkedHashMap.fromIterable([1, 2, 3], key: (x) => x + 1);
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Expect.isTrue(map is Map);
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Expect.isTrue(map is LinkedHashMap);
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Expect.equals(3, map.length);
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Expect.equals(3, map.keys.length);
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Expect.equals(3, map.values.length);
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Expect.equals(1, map[2]);
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Expect.equals(2, map[3]);
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Expect.equals(3, map[4]);
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}
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void noDefaultValuesTest() {
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var map = new LinkedHashMap.fromIterable([1, 2, 3],
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key: (x) => x + 1, value: (x) => x - 1);
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Expect.isTrue(map is Map);
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Expect.isTrue(map is LinkedHashMap);
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Expect.equals(3, map.length);
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Expect.equals(3, map.keys.length);
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Expect.equals(3, map.values.length);
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Expect.equals(0, map[2]);
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Expect.equals(1, map[3]);
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Expect.equals(2, map[4]);
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}
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void emptyIterableTest() {
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var map = new LinkedHashMap.fromIterable([]);
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Expect.isTrue(map is Map);
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Expect.isTrue(map is LinkedHashMap);
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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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var map = new LinkedHashMap.fromIterable([1, 2, 2], key: (x) => x + 1);
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Expect.isTrue(map is Map);
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Expect.isTrue(map is LinkedHashMap);
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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(1, map[2]);
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Expect.equals(2, map[3]);
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}
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void genericTypeTest() {
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dynamic map = new LinkedHashMap<int, String>.fromIterable(<int>[1, 2, 3],
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value: (x) => '$x');
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Expect.isTrue(map is Map<int, String>);
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Expect.isTrue(map is LinkedHashMap<int, String>);
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map = new LinkedHashMap<String, String>.fromIterable(<int>[1, 2, 3],
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key: (x) => '$x', value: (x) => '$x');
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Expect.isTrue(map is Map<String, String>);
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Expect.isTrue(map is LinkedHashMap<String, String>);
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// Make sure it is not just LinkedHashMap<dynamic, dynamic>.
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Expect.isFalse(map is LinkedHashMap<int, dynamic>);
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Expect.isFalse(map is LinkedHashMap<dynamic, int>);
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}
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