dart-sdk/tests/language/const/locals_test.dart
Robert Nystrom e736495eb7 Migrate language_2/const to NNBD.
Change-Id: I464275799b3e7a21326d35503b776f9c1101a599
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/141764
Commit-Queue: Bob Nystrom <rnystrom@google.com>
Reviewed-by: Bob Nystrom <rnystrom@google.com>
Reviewed-by: Erik Ernst <eernst@google.com>
Auto-Submit: Bob Nystrom <rnystrom@google.com>
2020-04-03 00:56:36 +00:00

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936 B
Dart

// Copyright (c) 2012, 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 "package:expect/expect.dart";
// Test of compile time constant local variables.
const N = 8;
class ConstFoo {
final x;
const ConstFoo(this.x);
}
main() {
const MIN = 2 - 1;
const MAX = N * 2;
const MASK = (1 << (MAX - MIN + 1)) - 1; // 65535.
Expect.equals(1, MIN);
Expect.equals(16, MAX);
Expect.equals(65535, MASK);
const s = 'MIN = $MIN MAX = $MAX MASK = $MASK';
Expect.identical(s, 'MIN = $MIN MAX = $MAX MASK = $MASK');
Expect.equals("MIN = 1 MAX = 16 MASK = 65535", s);
var cf1 = const ConstFoo(MASK);
var cf2 = const ConstFoo(s);
var cf3 = const ConstFoo('MIN = $MIN MAX = $MAX MASK = $MASK');
Expect.identical(cf2, cf3);
Expect.isFalse(identical(cf2, cf1));
}