Leaf Petersen
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>
83 lines
2.1 KiB
Dart
83 lines
2.1 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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// Tests that map literals are ordered.
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class OrderedMapsTest {
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static testMain() {
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testMaps(const {"a": 1, "c": 2}, const {"c": 2, "a": 1}, true);
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testMaps({"a": 1, "c": 2}, {"c": 2, "a": 1}, false);
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}
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static void testMaps(map1, map2, bool isConst) {
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Expect.isFalse(identical(map1, map2));
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var keys = map1.keys.toList();
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Expect.equals(2, keys.length);
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Expect.equals("a", keys[0]);
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Expect.equals("c", keys[1]);
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keys = map2.keys.toList();
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Expect.equals(2, keys.length);
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Expect.equals("c", keys[0]);
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Expect.equals("a", keys[1]);
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var values = map1.values.toList();
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Expect.equals(2, values.length);
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Expect.equals(1, values[0]);
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Expect.equals(2, values[1]);
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values = map2.values.toList();
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Expect.equals(2, values.length);
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Expect.equals(2, values[0]);
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Expect.equals(1, values[1]);
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if (isConst) return;
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map1["b"] = 3;
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map2["b"] = 3;
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keys = map1.keys.toList();
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Expect.equals(3, keys.length);
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Expect.equals("a", keys[0]);
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Expect.equals("c", keys[1]);
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Expect.equals("b", keys[2]);
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keys = map2.keys.toList();
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Expect.equals(3, keys.length);
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Expect.equals("c", keys[0]);
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Expect.equals("a", keys[1]);
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Expect.equals("b", keys[2]);
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values = map1.values.toList();
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Expect.equals(3, values.length);
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Expect.equals(1, values[0]);
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Expect.equals(2, values[1]);
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Expect.equals(3, values[2]);
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values = map2.values.toList();
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Expect.equals(3, values.length);
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Expect.equals(2, values[0]);
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Expect.equals(1, values[1]);
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Expect.equals(3, values[2]);
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map1["a"] = 4;
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keys = map1.keys.toList();
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Expect.equals(3, keys.length);
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Expect.equals("a", keys[0]);
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values = map1.values.toList();
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Expect.equals(3, values.length);
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Expect.equals(4, values[0]);
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}
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}
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main() {
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OrderedMapsTest.testMain();
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}
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