dart-sdk/tests/standalone/number_identity_test.dart
Robert Nystrom 35da19ac07 Migrate standalone_2 to null safety.
Change-Id: I0e97add738bc79314a210cf137525b7391467fc2
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/152595
Reviewed-by: Siva Annamalai <asiva@google.com>
Commit-Queue: Bob Nystrom <rnystrom@google.com>
Auto-Submit: Bob Nystrom <rnystrom@google.com>
2020-06-26 19:17:50 +00:00

30 lines
871 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.
// Dart test program for testing params.
//
// Tests 'identical' for cases that not supported in dart2js (bigint,
// disambiguation int/double).
import "package:expect/expect.dart";
main() {
for (int i = 0; i < 1000; i++) testNumberIdentity();
}
testNumberIdentity() {
const int smi = 8;
const int mint = 9223372036854775807;
const double dbl = 8.0;
// No int/double differences in dart2js.
var a = smi + 0;
Expect.isFalse(identical(a, dbl));
var c = dbl + 0.0;
Expect.isFalse(identical(c, smi));
a = mint;
var b = a + 0;
Expect.isTrue(identical(a, b));
b = a + 1;
Expect.isFalse(identical(a, b)); // Fails with dart2js.
}