tests/compiler/dart2js_extra/minus_zero_test.dart

// Copyright (c) 2014, 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.

// Regression test for issue 17210.

import "package:expect/expect.dart";

const double MINUS_ZERO = -0; /// 01: static type warning, checked mode compile-time error

void main() {
  // Dart2js must not infer that the type-intersection of int and -0.0 is empty.
  // It must get an interceptor for the addition (`i += 3`), or use the native
  // JS + operation.
  int i = MINUS_ZERO;  /// 01: continued
  i += 3;              /// 01: continued
  Expect.equals(3, i); /// 01: continued
}