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// Copyright (c) 2018, 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 'dart:collection';
import 'package:expect/expect.dart';
main() {
runTests(<K, V>(entries) => Map<K, V>.fromEntries(entries));
runTests(<K, V>(entries) => HashMap<K, V>.fromEntries(entries));
runTests(<K, V>(entries) => LinkedHashMap<K, V>.fromEntries(entries));
}
void runTests(Map<K, V> Function<K, V>(Iterable<MapEntry<K, V>>) ctor) {
fromEntriesTest(ctor);
emptyIterableTest(ctor);
equalElementsTest(ctor);
}
void fromEntriesTest(Map<K, V> Function<K, V>(Iterable<MapEntry<K, V>>) ctor) {
var map = ctor([MapEntry(1, "one"), MapEntry(2, "two")]);
Expect.equals(2, map.length);
Expect.equals(2, map.keys.length);
Expect.equals(2, map.values.length);
Expect.equals("one", map[1]);
Expect.equals("two", map[2]);
}
void emptyIterableTest(
Map<K, V> Function<K, V>(Iterable<MapEntry<K, V>>) ctor) {
var map = ctor([]);
Expect.equals(0, map.length);
Expect.equals(0, map.keys.length);
Expect.equals(0, map.values.length);
}
void equalElementsTest(
Map<K, V> Function<K, V>(Iterable<MapEntry<K, V>>) ctor) {
var map =
ctor([MapEntry(1, "one"), MapEntry(2, "two"), MapEntry(2, "other")]);
Expect.equals(2, map.length);
Expect.equals(2, map.keys.length);
Expect.equals(2, map.values.length);
Expect.equals("one", map[1]);
Expect.equals("other", map[2]);
}